POI操纵EXCEL文档之导入文档

Posted samile6899

tags:

篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了POI操纵EXCEL文档之导入文档相关的知识,希望对你有一定的参考价值。

         当前主流的后台管理系统,相信都会有文档导入导出的功能。而这其中用到的技术又是多种多样,有用POI框架,也有用JXLS技术的。技术只是手段,项目中实现功能最重要。今天主要说下如何利用POI技术操作EXCEL文档。


=================================================================

POI 操作EXCEL文档导入导出,大致有两种方式:

     1. 用户模式(usermodel):一次性将xls文件读入到内存,创建dom结构处理

    2. 事件模式(eventusermodel):以流的形式读取xls文件,读取xls文件占用相对较小的内存


-----------------------------------------------------------------------------------------------------------

         第一种方式容易造成内存溢出的异常,第二种的话是逐条读取数据,即使文档中有千万条数据,也依然可以正常读取,不会造成内存溢出。今天使用的就是第二中方式,基于事件模式的excel文档导入。具体的两种模式的区别,大家可以网上百度下,了解了这两种模式之后,对于大数据EXCEL导入的优化会有很好的帮助。(参考:http://blog.csdn.net/lipinganq/article/details/77678443 )


**********************************************************************

POI 导入EXCEL文档:(设计思路

      1,首先,要导入EXCEL 文档,就必须要先有导入的模板文件,在这里,我提供好了制作好的EXCEL 模板文件提供下载;(EXCEL文档模板示例下载 )

      2,有了EXCEL 模板文件,就开始编写页面,并编写后台逻辑代码了;


<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 14-6-26
  Time: 下午3:05
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@include file="/aml/includes/amlincludes.jsp" %>
<html>
<head></head>
<script type="text/javascript">
    function ${param.perfix}showUpdateWindow(data){
        $("#"+"${param.perfix}objid").stk_val("");
        $("#"+"${param.perfix}name").text("");
        $("#"+"${param.perfix}certno").text("");
        $("#"+"${param.perfix}remark").text("");
        $("#"+"${param.perfix}oricustid").stk_val("");
        $("#"+"${param.perfix}certtype").text("");


        var qdiiType = $("#"+"${param.perfix}qdiiType").stk_val();
        stk.call({
            className:"com.sinitek.sirm.web.amlqd.AmlQDIIRCAction",
            method:'getQDIIDetail',
            param:{"id":data.objid, "qdiiType":qdiiType},
            callBack:function (result) {
                $("#"+"${param.perfix}objid").stk_val(result.objid);
                $("#"+"${param.perfix}name").text(result.name);
                $("#"+"${param.perfix}certno").text(result.certno);
                $("#"+"${param.perfix}remark").text(result.remark);
                $("#"+"${param.perfix}oricustid").stk_val(result.oricustid);
                $("#"+"${param.perfix}certtype").text(result.certtypename);

                $("#"+"${param.perfix}editWindow").stk_show({title:"编辑修改"});
            }
        });
    }

    var ${param.perfix}uploader = null;
    function ${param.perfix}importRLInit(){
        if(${param.perfix}uploader==null){
            ${param.perfix}uploader = new sirm.io.uploader("#"+"${param.perfix}uploader", null, true, [
                {title:"批量上传", extensions:"xls"}
            ]);
        }else {
            ${param.perfix}uploader.clear();
        }
    }

    function ${param.perfix}showAddQDIIListWindow(){
        $("#"+"${param.perfix}importWindow").stk_show({title:"批量导入",width:"800px"});
        ${param.perfix}importRLInit();
    }

    //批量导入模板
    function ${param.perfix}importAmlRiskList(){
        $("#"+"${param.perfix}importForm").stk_submit("analystdata", function (result) {
            stk.alert(result, "询问", {"确认":function () {
                stk.closeDialog();
                $("#"+"${param.perfix}importForm").stk_submit("importAmlRiskList", function (result) {
                    if (result.successCount == 1) {
                        stk.alert("上传完毕!", "提示", {"确认":function () {
                            $("#__alertDiv").dialog("close");
                            $("#"+"${param.perfix}importWindow").stk_hide();
                            $("#"+"${param.perfix}table").stk_query();
                        }});
                    } else {
                        stk.alert(result.errorinfo);
                    }
                });
            },
                "取消":function () {
                    stk.closeDialog();
                }});
        });
    }

    function ${param.perfix}remove(){
        if ($("#"+"${param.perfix}checkBoxPlugins").hasSelect()) {
            stk.confirm("确认删除?", function () {
                var qdiiType = $("#"+"${param.perfix}qdiiType").stk_val();
                $("#"+"${param.perfix}checkBoxPlugins").stk_call({type:'delete', qdiiType:qdiiType}, function (result) {
                    $("#"+"${param.perfix}table").stk_query();
                });
            });
        } else {
            stk.alert("请选择需删除的数据");
        }
    }

    function ${param.perfix}save(){
        $("#"+"${param.perfix}editForm").stk_submit("editQDIIDetail",function(result){
            stk.alert(result.code);
            if(result.code != null){
                $("#"+"${param.perfix}editWindow").stk_hide();
                $("#"+"${param.perfix}table").stk_query();
            }
        });
    }

    function ${param.perfix}exportAll(fileType){
        var funName = fileType == "csv" ? "exportCsv" : fileType == "xls" ? "exportExcel" : "";
        $("#"+"${param.perfix}form").stk_submit(funName, function(result){
            if(result != ""){
                window.location.href = sirm.jsurl(result);
                $("#"+"${param.perfix}table").stk_query();
            }
        });
    }

    $(document).ready(function(){
        $("#"+"${param.perfix}certtypeS").stk_emptyOptions();
        var value = "${param.cttpList}";
        value = value.replace("{", "").replace("}", "");
        var valArr = value.split(",");
        for(var i=0; i<valArr.length; i++){
            var s = valArr[i].split("=");
            $("#"+"${param.perfix}certtypeS").stk_addOptions(s[0], s[1]);
        }
    });

</script>
<sirm:body>
    <ui:form id="${param.perfix}form" clazz="com.sinitek.sirm.web.amlqd.AmlQDIIRCAction">
        <input id="${param.perfix}qdiiType" type="hidden" name="qdiiType" value="${param.type}"/>
        <table width="100%" class="search-params-bar">
            <tr>
                <td class="tit">
                    <label>客户名称:</label>
                    <ui:textfield id="${param.perfix}nameS" name="name" width="120px"/>
                </td>
                <td class="tit">
                    <label>证件号码:</label>
                    <ui:textfield id="${param.perfix}certnoS" name="certno" width="120px"/>
                </td>
                <td class="tit" colspan="2">
                    <label>创建日期:</label>
                    <ui:datefield id="${param.perfix}startdate_openS" name="startdate_open"
                                  endDate="${param.perfix}enddate_openS"/>
                    ~
                    <ui:datefield id="${param.perfix}enddate_openS" name="enddate_open"
                                  startDate="${param.perfix}startdate_openS"/>
                </td>
                <td class="tit" colspan="2">
                    <label>导出日期:</label>
                    <ui:datefield id="${param.perfix}exportdate_startS" name="exportdate_start"
                                  endDate="${param.perfix}exportdate_endS"/>
                    ~
                    <ui:datefield id="${param.perfix}exportdate_endS" name="exportdate_end"
                                  startDate="${param.perfix}exportdate_startS"/>
                </td>
            </tr>
            <tr>
                <td class="tit">
                    <label>证件类型:</label>
                    <ui:select id="${param.perfix}certtypeS" name="certtype"
                               headerKey="" headerValue="---请选择---" defaultValue="" width="120px"/>
                </td>
                <td class="tit">
                    <label>有无备注:</label>
                    <ui:select id="${param.perfix}remarkS" name="remark" list="#{'1':'有','0':'无'}"
                               headerKey="" headerValue="---请选择---" defaultValue=""/>
                </td>
                <td class="tit" colspan="2">
                    <ui:button text="查询">
                        <event:onclick>
                            $("#"+"${param.perfix}table").stk_query();
                        </event:onclick>
                    </ui:button>
                </td>
            </tr>
        </table>
    </ui:form>

  <plugin:colRowNum id="${param.perfix}rowNumPlugins"/>
  <plugin:colCheckbox id="${param.perfix}checkBoxPlugins" name="${param.perfix}check"/>
  <plugin:colLink id="${param.perfix}updateBtn" text="修改" dataVar="data">
      ${param.perfix}showUpdateWindow(data)
  </plugin:colLink>
   <ui:table id="${param.perfix}table" queryForm="${param.perfix}form" actionClass="com.sinitek.sirm.web.amlqd.AmlQDIIRCAction"  pageSize="50" tableWidth="100%">

       <layout:tableToolBar position="top">
           <ui:toolbarButton text="批量导入" icon="ui-icon-plusthick">
               <event:onclick>
                   ${param.perfix}showAddQDIIListWindow();
               </event:onclick>
           </ui:toolbarButton>

           <ui:toolbarButton text="批量删除" icon="ui-icon-minusthick">
               <event:onclick>
                   ${param.perfix}remove();
               </event:onclick>
           </ui:toolbarButton>

           <ui:toolbarButton text="导出CSV" icon="ui-icon-gear">
               <event:onclick>
                   ${param.perfix}exportAll("csv");
               </event:onclick>
           </ui:toolbarButton>

           <ui:toolbarButton text="导出EXCEL" icon="ui-icon-gear">
               <event:onclick>
                   ${param.perfix}exportAll("xls");
               </event:onclick>
           </ui:toolbarButton>
       </layout:tableToolBar>

    <ui:col plugin="${param.perfix}checkBoxPlugins" width="35px"  />
    <ui:col plugin="${param.perfix}rowNumPlugins"  width="30px"/>
    <ui:col property="name" width="160px" title="客户名称" align="center"/>
    <ui:colCust method="getCttpName" width="120px" title="证件类型"/>
    <ui:col property="certno" width="120px" title="证件号码" align="center"/>
    <ui:col property="remark" width="120px" title="备注" align="center"/>
    <ui:col property="create_date" width="200px" title="创建时间" align="center"/>
    <ui:col property="export_date" width="200px" title="导出时间" align="center"/>
    <ui:col plugin="${param.perfix}updateBtn" title="操作" width="100px"/>
  </ui:table>

    <layout:window id="${param.perfix}importWindow" width="400px">
        <ui:form id="${param.perfix}importForm" clazz="com.sinitek.sirm.web.amlqd.AmlQDIIRCAction"  allowFileUpload="true">
            <table class="stk-form-ui-st1" width="400px" >
                <tr>
                    <td  class="hd" width="120"><br/><br/><br/><br/></td>
                    <td class="bd"  align="left" width="270px">
                        <input type="hidden" name="datatype" id="${param.perfix}datatype" value="GBK"/>
                        <div id="${param.perfix}uploader"></div>
                    </td>
                </tr>
                <tr>
                    <td colspan="2" align="center">
                        <br/>
                        <a href="/aml/excel/QDIICustomers.xls">下载模板</a>
                                   
                        <ui:button text="批量导入">
                            <event:onclick>
                                ${param.perfix}importAmlRiskList()
                            </event:onclick>
                        </ui:button>
                            
                        <ui:button text="关 闭">
                            <event:onclick>
                                $("#"+"${param.perfix}importWindow").stk_hide()
                            </event:onclick>
                        </ui:button>
                    </td>
                </tr>
            </table>
        </ui:form>
    </layout:window>

    <layout:window id="${param.perfix}editWindow" width="500px">
        <ui:form id="${param.perfix}editForm" clazz="com.sinitek.sirm.web.amlqd.AmlQDIIRCAction">
            <input type="hidden" name="id" id="${param.perfix}objid"/>
            <input id="${param.perfix}qdiiType" type="hidden" name="qdiiType" value="${param.type}"/>

            <table class="stk-form-ui-st1">
                <tr>
                    <td class="hd" width="140">客户名称</td>
                    <td class="bd" width="auto">
                        <ui:label id="${param.perfix}name" name="name"></ui:label>
                    </td>
                </tr>
                <tr>
                    <td class="hd" width="140">证件类型</td>
                    <td class="bd" width="auto">
                        <ui:label id="${param.perfix}certtype" name="certtype"></ui:label>
                       <%-- <%–<ui:select id="certtypeQ" name="certtype" list="#attr.cttpList" listKey="key"
                                   listValue="value" width="120px"
                                   headerKey="" headerValue="请选择" defaultValue=""/>–%>--%>
                    </td>
                </tr>
                <tr>
                    <td class="hd" width="140">证件号码</td>
                    <td class="bd" width="auto">
                        <ui:label id="${param.perfix}certno" name="certno"></ui:label>
                    </td>
                </tr>
                <tr>
                    <td class="hd" width="140">客户ID</td>
                    <td class="bd" width="auto">
                        <ui:textfield id="${param.perfix}oricustid" name="oricustid"></ui:textfield>
                    </td>
                </tr>
                <tr>
                    <td class="hd" width="140">备注</td>
                    <td class="bd" width="auto">
                        <%--<ui:textfield id="remarkQ" name="remark"/>--%>
                        <ui:textarea rows="8" width="250px" id="${param.perfix}remark" name="remark"/>
                    </td>
                </tr>
            </table>
            <br/>

            <div align="center">
                <ui:button text="保 存">
                    <event:onclick>
                        if ($("#"+"${param.perfix}editForm").stk_checkForm()) {
                            ${param.perfix}save();
                        }
                    </event:onclick>
                </ui:button>
                  
                <ui:button text="取 消">
                    <event:onclick>
                        $("#"+"${param.perfix}editWindow").stk_hide()
                    </event:onclick>
                </ui:button>
            </div>
            <func:checkers formId="${param.perfix}editForm">
                <%--<func:checker target="nameQ" allowBlank="false" blankText="客户名称不能为空"/>
                <func:checker target="certtypeQ" allowBlank="false" blankText="证件类型不能为空!" />
                <func:checker target="certnoQ" allowBlank="false" blankText="证件号码不能为空!" />--%>
                <func:checker target="remark" allowBlank="false" blankText="备注不能为空!" />
            </func:checkers>
        </ui:form>
    </layout:window>

</sirm:body>
</html>
          后台的ACTION :

package com.sinitek.sirm.web.amlqd;

import com.sinitek.sirm.busin.aml.service.AmlServiceFactory;
import com.sinitek.sirm.busin.aml.service.impl.AmlQDIIListServiceImpl;
import com.sinitek.sirm.busin.aml.utils.*;
import com.sinitek.sirm.common.utils.StringUtil;
import com.sinitek.sirm.common.web.RequestContext;
import com.sinitek.sirm.common.web.tag.PageLoadContext;
import com.sinitek.sirm.framework.utils.io.Uploader;
import com.sinitek.sirm.framework.utils.io.UploaderFile;
import com.sinitek.sirm.framework.utils.io.UploaderFileList;
import com.sinitek.spirit.webcontrol.table.ICheckBoxPluginAware;
import com.sinitek.spirit.webcontrol.table.ITableAware;
import org.directwebremoting.io.FileTransfer;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * Created by user on 2016/4/21.
 */
public class AmlQDIIRCAction implements ITableAware,ICheckBoxPluginAware {
    public static final String TYPE_RC = "rc";
    public static final String TYPE_DQ = "dq";

    public static void loadpage(PageLoadContext context) {
        context.getPageContext().setAttribute("cttpList", AmlServiceFactory.getAmlOptionsService().getOptionMap(OptionsUtils.citpList));
    }

    @Override
    public Object callCheckBoxPlugin(List<Map> list, Map map, HttpServletRequest httpServletRequest) throws Exception {
        String type = StringUtil.safeToString(map.get("type"), "");
        String qdiiType = StringUtil.safeToString(map.get("qdiiType"), "");
        String result = "";
        if (type.equals("delete")) {
            if (list != null && list.size() > 0) {
                if (qdiiType.equals(TYPE_RC)) {
                    for (Map p : list) {
                        String id = (String) p.get("id");
                        result += AmlServiceFactory.getAmlQDIIListService().delQDIIRC(id);
                    }
                } else if(qdiiType.equals(TYPE_DQ)){
                    for (Map p : list) {
                        String id = (String) p.get("id");
                        result += AmlServiceFactory.getAmlQDIIListService().delQDIIDQ(id);
                    }
                }
            }
        }
        return result;
    }

    @Override
    public Object getResult(Map<String, String> map, HttpServletRequest httpServletRequest) throws Exception {
        String qdiiType = StringUtil.safeToString(map.get("qdiiType"), "");
        if (qdiiType.equals(TYPE_RC)) {
            return AmlServiceFactory.getAmlQDIIListService().getAmlQDIIRC(map);
        } else if(qdiiType.equals(TYPE_DQ)){
            return AmlServiceFactory.getAmlQDIIListService().getAmlQDIIDQ(map);
        } else{
            return null;
        }
    }

    @Override
    public String setDefaultOrderBy(Map<String, String> map, HttpServletRequest httpServletRequest) throws Exception {
        return "id desc";
    }

    public String analystdata(Map<String, String> map, Map<String, List<FileTransfer>> fileMap, HttpServletRequest request) {
        //获取临时目录。
        UploaderFileList fileList = Uploader.parseRequest(map);
        StringBuffer name = new StringBuffer("上传文档名称为:");
        int i = 0;
        for(UploaderFile file:fileList)
        {
            name.append("<br/>[" + (++i) + "] " + file.getUploadName());
        }
        return name.toString();
    }

    public Object importAmlRiskList(Map<String, String> map, Map<String, List<FileTransfer>> fileMap, HttpServletRequest request) {
        Map result=new HashMap();
        //获取临时目录。
        UploaderFileList files = Uploader.parseRequest(map);
        if(files.size() > 1)
        {
            result.put("errorinfo","一次只能上传一个xls文档");
        }
        if (files.size()==1) {
            for(UploaderFile file:files){
                try {
                    result = importFile(file);
                } catch (Exception e) {
                    e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
                    result.put("errorinfo",e.getMessage());
                    break;
                }
            }
        }
        return result;
    }

    /**
     * 批量导入EXCEL文档
     * @param uploadFile
     * @return
     * @throws Exception
     */
    private Map importFile(UploaderFile uploadFile) throws Exception {
        Map result=new HashMap();
        String uploadFilePath = uploadFile.getPath();

        //评分表名称格式 PFB-YYYYMMDD.XLS
        if(!FileUtils.getAffix(uploadFilePath)[1].toLowerCase().equals(".xls")){
            throw new Exception("请选择正确类型的文件!");
        }

        Map currUser=new HashMap();
        currUser.put("orgid",RequestContext.getCurrentUser().getOrgId());
        int successCount = importAmlRiskListByExecls(uploadFilePath);

        result.put("successCount",successCount);
        return result;
    }

    public static void uploadFile(InputStream fis,String attachmentName){
        FileOutputStream fos = null;
        try{
            fos = new FileOutputStream(new File(attachmentName));
            byte[] buffer = new byte[1024*1024];
            while(true){
                int length = fis.read(buffer);
                if(length < 0) break;
                fos.write(buffer, 0, length);
            }
            fis.close();
            fos.close();
        }catch(IOException ioe) {
            ioe.printStackTrace();
        }finally{
            if(fis != null){
                try{
                    fis.close();
                }catch(IOException ioe){
                    ioe.printStackTrace();
                }
            }
            if(fos != null){
                try{
                    fos.close();
                }catch(IOException ioe) {
                    ioe.printStackTrace();
                }
            }
        }
    }

    public static String getCttpName(Map map){
        String type=StringUtil.safeToString(map.get("certtype"), "");

        Map mpes= AmlServiceFactory.getAmlOptionsService().getOptionMap(OptionsUtils.citpList);
        for(Object keys : mpes.keySet()){
            if(keys.equals(type)){
                type=mpes.get(keys).toString();        //证件类型
            }
        }
        return type;
    }

    public int importAmlRiskListByExecls(String fileName) {
        int successCount =1;
        ExcelUtil excelUtil = new ExcelUtil();
        List excelList = excelUtil.readDataFromExcelThrowsException(fileName);
        insertAmlQDIIRCImports(excelList);
        return successCount;
    }

    public void insertAmlQDIIRCImports(List list) {
        list.remove(0);// 去掉表头
        int len = list.size();
        if (len == 0) {
            return;
        }
        String rc_groupid = AmlServiceFactory.getAmlQDIIListService().getNextValue_Seq("SEQ_CUSTOMER_QDII_RC_GROUPID");
        for (int i = 0; i < len; i++) {
            StringBuffer sqlBuf = new StringBuffer("");
            List rowList = (List) list.get(i);
            if (rowList.size() < 3){
                break;// 格式不正确
            }

            String name = StringUtil.safeToString(rowList.get(0), "");
            String certno = StringUtil.safeToString(rowList.get(2), "");
            String remark = StringUtil.safeToString(rowList.get(3), "");

            DateFormat date=new SimpleDateFormat("yyyy-MM-dd");
            String create_date = date.format(new Date());

            String certtype = "";
            String certtypeName = StringUtil.safeToString(rowList.get(1), "");
            Map mpes = AmlServiceFactory.getAmlOptionsService().getOptionMap(OptionsUtils.citpList);
            for(Object keys : mpes.keySet()){
                if(mpes.get(keys).equals(certtypeName)){
                    certtype = keys.toString();        //证件类型
                    break;
                }
            }

            boolean flag = false;
            String oricustid="";  //原始客户ID
            Map param=new HashMap();
            param.put("certtype", certtype);
            param.put("certno", certno);
            List listes = AmlServiceFactory.getAmlQDIIListService().findQDIICustInfo(param);
            /**
             * 证件类型+证件号码->全量客户中查找对应原始客户ID
             * 1.找到:用原始客户ID匹配QDII日常客户的原始客户ID,存在,不插;不存在,插;
             * 2.没找到:用证件类型+证件号码 匹配QDII日常客户的 证件类型+证件号码,存在,不插;不存在,插;
             */
            if(listes!=null && listes.size()>0) {
                Map map = (Map) listes.get(0);
                oricustid = map.get("oricustid").toString();

                param.clear();
                param.put("oricustid", oricustid);
                int count = AmlServiceFactory.getAmlQDIIListService().countDQIIRCCust(param);

                if (count == 0) {
                    flag = true;
                }
            } else {
                param.clear();
                param.put("certtype", certtype);
                param.put("certno", certno);
                int count = AmlServiceFactory.getAmlQDIIListService().countDQIIRCCust(param);

                if (count == 0) {
                    flag = true;
                }
            }

            if(flag){
                Map dqii_rc = new HashMap();
                dqii_rc.put("batgroupid", rc_groupid);
                dqii_rc.put("oricustid", oricustid);
                dqii_rc.put("name", name);
                dqii_rc.put("certtype", certtype);
                dqii_rc.put("certno", certno);
                dqii_rc.put("create_date", create_date);
                dqii_rc.put("create_oper", RequestContext.getCurrentUser().getOrgId());
                dqii_rc.put("remark", remark);
                dqii_rc.put("flag", "1");

                try {
                    Map temp = AmlServiceFactory.getAmlServiceHelper().save(dqii_rc, "AML_DM_CUSTOMER_QDII_RC", "id", "SEQ_CUSTOMER_QDII_RC_ID");
                } catch (Exception e){

                }
            }
        }
    }
}

            EXCELUtil 工具类:

/*
 * Created on 2005-3-14
 */
package com.sinitek.sirm.busin.aml.utils;

/**
 * @author ray.huang
 */

import com.sinitek.sirm.common.utils.IOUtil;
import com.sinitek.sirm.common.web.RequestContext;
import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import jxl.WorkbookSettings;
import jxl.format.Colour;
import jxl.format.UnderlineStyle;
import jxl.write.*;
import net.sf.jxls.transformer.XLSTransformer;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;

import javax.servlet.http.HttpServletRequest;
import java.io.*;
import java.util.*;


public class ExcelUtil {
	public static final int pageNum = 10000000;//每个worksheet显示的数据条数

	public static String writeExcel(String excelPath,String reportName,List colName,List data,List datap,String tableName){
		 //打开文件
		 String fileName = "";
		 String excelName = "";
		 try{
			//String excelPath = ExcelConfig.getInstance().excelFile;
			//String excelPath = Config.getConfig("excel");
			//FinderManager fm = new FinderManager();
			excelName =reportName+".xls";
			fileName = excelPath+System.getProperty("file.separator")+excelName;
			createFile(fileName);
			WritableWorkbook book = Workbook.createWorkbook(new File(fileName));
			//计算列数
			int j = 1;
			int k = 2;
			int sheetNum = 0;
			WritableSheet sheet = book.createSheet("第1页",sheetNum);

			int colNameLen = colName.size();
			int middle = (colNameLen/2)-1;
			//打印标题
			Label label=new Label(middle,0,tableName);
			sheet.addCell(label);
			//打印头
			WritableFont wf = new WritableFont(WritableFont.ARIAL,10, WritableFont.NO_BOLD,false, UnderlineStyle.NO_UNDERLINE,   Colour.BLACK);// 设置写入字体
			WritableCellFormat wcfF = new WritableCellFormat(wf);// 设置CellFormat
			wcfF.setBackground(Colour.GRAY_25);
			for(int i=0;i<colNameLen;i++){
				label=new Label(i,1,colName.get(i).toString(),wcfF);
				sheet.addCell(label);
			}
			int dataLen = data.size();
			for(int n=0;n<dataLen;n++){
			   if(j%pageNum == 0){
					int count = sheetNum+2;
					sheet = book.createSheet("第"+count+"页",sheetNum);
					//打印标题
				    label=new Label(middle,0,tableName);
				    sheet.addCell(label);
					//打印头
					for(int i=0;i<colNameLen;i++){
					   label=new Label(i,1,colName.get(i).toString()==null?"":colName.get(i).toString());
					   sheet.addCell(label);
					}
					sheetNum++;
					k = 2;
				}
				List data2 = (List)data.get(n);
				int dataSize = data2.size();
				for(int i=0;i<dataSize;i++){
					String dataValue = "";
					if(data2.get(i) != null && !data2.get(i).equals("")){
					  dataValue = data2.get(i).toString();
					}
					label=new Label(i,k,dataValue);
					sheet.addCell(label);
				 }
				k++;
				j++;
		   }
			int dataLen2 = datap.size();
			for(int n=0;n<dataLen2;n++){
			   if(j%pageNum == 0){
					int count = sheetNum+2;
					sheet = book.createSheet("第"+count+"页",sheetNum);
					//打印标题
				    label=new Label(middle,0,tableName);
				    sheet.addCell(label);
					//打印头
					for(int i=0;i<colNameLen;i++){
					   label=new Label(i,1,colName.get(i).toString()==null?"":colName.get(i).toString());
					   sheet.addCell(label);
					}
					sheetNum++;
					k = 2;
				}
				List data3 = (List)datap.get(n);
				int dataSize = data3.size();
				for(int i=0;i<dataSize;i++){
					String dataValue = "";
					if(data3.get(i) != null && !data3.get(i).equals("")){
					  dataValue = data3.get(i).toString();
					}
					label=new Label(i,k,dataValue);
					sheet.addCell(label);
				 }
				k++;
				j++;
		   }
			//写入数据并关闭文件
			book.write();
			book.close();
		 }catch(Exception e){
			e.printStackTrace();
		 }
		return excelName;
	}

	/**
	   * @param colName 头的名称
	   * @param Data    显示的数据
	   */

	  public static String writeExcel(String excelPath,String reportName,List colName,List data,String tableName){
		 //打开文件
		 String fileName = "";
		 String excelName = "";
		 try{
			//String excelPath = ExcelConfig.getInstance().excelFile;
			//String excelPath = Config.getConfig("excel");
			//FinderManager fm = new FinderManager();
			excelName =reportName+".xls";
			fileName = excelPath+System.getProperty("file.separator")+excelName;
			createFile(fileName);
			WorkbookSettings workbookSettings=new WorkbookSettings();
			workbookSettings.setEncoding("ISO-8859-1"); //关键代码,解决中文乱码

			WritableWorkbook book = Workbook.createWorkbook(new File(fileName), workbookSettings);

			//计算列数
			int j = 1;
			int k = 2;
			int sheetNum = 0;
			WritableSheet sheet = book.createSheet("第1页",sheetNum);

			int colNameLen = colName.size();
			int middle = (colNameLen/2)-1;
			//打印标题
			Label label=new Label(middle,0,tableName);
			sheet.addCell(label);
			//打印头
			WritableFont wf = new WritableFont(WritableFont.ARIAL,10, WritableFont.NO_BOLD,false, UnderlineStyle.NO_UNDERLINE,   Colour.BLACK);// 设置写入字体
			WritableCellFormat wcfF = new WritableCellFormat(wf);// 设置CellFormat
			wcfF.setBackground(Colour.GRAY_25);
			for(int i=0;i<colNameLen;i++){
				label=new Label(i,1,colName.get(i).toString(),wcfF);
				sheet.addCell(label);
			}
			int dataLen = data.size();
			for(int n=0;n<dataLen;n++){
			   if(j%pageNum == 0){
					int count = sheetNum+2;
					sheet = book.createSheet("第"+count+"页",sheetNum);
					//打印标题
				    label=new Label(middle,0,tableName);
				    sheet.addCell(label);
					//打印头
					for(int i=0;i<colNameLen;i++){
					   label=new Label(i,1,colName.get(i).toString()==null?"":colName.get(i).toString());
					   sheet.addCell(label);
					}
					sheetNum++;
					k = 2;
				}
				List data2 = (List)data.get(n);
				int dataSize = data2.size();
				for(int i=0;i<dataSize;i++){
					String dataValue = "";
					if(data2.get(i) != null && !data2.get(i).equals("")){
					  dataValue = data2.get(i).toString();
					}
					label=new Label(i,k,dataValue);
					sheet.addCell(label);
				 }
				k++;
				j++;
		   }
			//写入数据并关闭文件
			book.write();
			book.close();
		 }catch(Exception e){
			e.printStackTrace();
		 }
		return excelName;
	}

	  /**
	   * 将法人信息合并到同一页中
	   * @author weifeng.tao
	   * @date 2009.08.26
	   * */
	  public static String updateExcel(String excelPath,List colName,List data){
			 //打开文件
			 String excelName = excelPath;
			 try{
				Workbook wb = Workbook.getWorkbook(new File(excelPath));
				WritableWorkbook book = Workbook.createWorkbook(new File(excelPath), wb);
				//计算列数
				WritableSheet sheet = book.getSheet(0);
				int k = sheet.getRows();

				//打印头
				WritableFont wf = new WritableFont(WritableFont.ARIAL,10, WritableFont.NO_BOLD,false, UnderlineStyle.NO_UNDERLINE,   Colour.BLACK);// 设置写入字体
				WritableCellFormat wcfF = new WritableCellFormat(wf);// 设置CellFormat
				wcfF.setBackground(Colour.BLACK);

				Label label = new Label(0,0,"");

				int dataLen = data.size();
				for(int n=0;n<dataLen;n++){
					List data2 = (List)data.get(n);
					int dataSize = data2.size();
					for(int i=0;i<dataSize;i++){
						String dataValue = "";
						if(data2.get(i) != null && !data2.get(i).equals("")){
						  dataValue = data2.get(i).toString();
						}
						label=new Label(i,k,dataValue);
						sheet.addCell(label);
					 }
					k++;
			   }
				//写入数据并关闭文件
				book.write();
				book.close();
			 }catch(Exception e){
				e.printStackTrace();
			 }
			return excelName;
		}

	  public static String updateExcel(String excelPath,List colName,List data,String tableName,int page){
			 //打开文件
			 String excelName = excelPath;
			 try{
				//String excelPath = ExcelConfig.getInstance().excelFile;
				//String excelPath = Config.getConfig("excel");
				Workbook wb = Workbook.getWorkbook(new File(excelPath));
				WritableWorkbook book = Workbook.createWorkbook(new File(excelPath), wb);
				//WritableWorkbook book = Workbook.createWorkbook(new File(excelPath),wb);
				//计算列数
				int j = 1;
				int k = 2;
				WritableSheet sheet = book.createSheet("第2页",page);

				int colNameLen = colName.size();
				int middle = (colNameLen/2)-1;
				//打印标题
				Label label=new Label(middle,0,tableName);
				sheet.addCell(label);
				//打印头
				WritableFont wf = new WritableFont(WritableFont.ARIAL,10, WritableFont.NO_BOLD,false, UnderlineStyle.NO_UNDERLINE,   Colour.BLACK);// 设置写入字体
				//NumberFormat nf = new jxl.write.NumberFormat("#"); //设定带小数点数字格式
				//WritableCellFormat wcfF = new WritableCellFormat(wf, nf);// 设置CellFormat
				WritableCellFormat wcfF = new WritableCellFormat(wf);// 设置CellFormat
				wcfF.setBackground(Colour.BLACK);
				for(int i=0;i<colNameLen;i++){
					label=new Label(i,1,colName.get(i).toString(),wcfF);
					sheet.addCell(label);
				}
				int dataLen = data.size();
				for(int n=0;n<dataLen;n++){
				   if(j%pageNum == 0){
						int count = page+2;
						sheet = book.createSheet("第"+count+"页",page);
						//打印标题
					    label=new Label(middle,0,tableName);
					    sheet.addCell(label);
						//打印头
						for(int i=0;i<colNameLen;i++){
						   label=new Label(i,1,colName.get(i).toString()==null?"":colName.get(i).toString());
						   sheet.addCell(label);
						}
						page++;
						k = 2;
					}
					List data2 = (List)data.get(n);
					int dataSize = data2.size();
					for(int i=0;i<dataSize;i++){
						String dataValue = "";
						if(data2.get(i) != null && !data2.get(i).equals("")){
						  dataValue = data2.get(i).toString();
						}
						label=new Label(i,k,dataValue);
						sheet.addCell(label);
					 }
					k++;
					j++;
			   }
				//写入数据并关闭文件
				book.write();
				book.close();
			 }catch(Exception e){
				e.printStackTrace();
			 }
			return excelName;
		}

  public static String writeExcelpageSize(String excelPath,String reportName,List colName,List data,WritableWorkbook book,int gg){
	  //打开文件
		 String excelName = "";
		 try{
			//计算列数
			int j = 1;
			int k = 2;
			int sheetNum = gg;
			WritableSheet sheet = book.createSheet("第"+gg+"页",gg);
			int colNameLen = colName.size();
			int middle = colNameLen/2;
			//打印标题
			Label label=new Label(middle,0,reportName);
			sheet.addCell(label);
			//打印头
			for(int i=0;i<colNameLen;i++){
				label=new Label(i,1,colName.get(i).toString());
				sheet.addCell(label);
			}
			int dataLen = data.size();
			for(int n=0;n<dataLen;n++){
			   if(j%pageNum == 0){
					int count = sheetNum+2;
					sheet = book.createSheet("第"+count+"页",sheetNum);
					//打印标题
				    label=new Label(middle,0,reportName);
				    sheet.addCell(label);
					//打印头
					for(int i=0;i<colNameLen;i++){
					   label=new Label(i,1,colName.get(i).toString()==null?"":colName.get(i).toString());
					   sheet.addCell(label);
					}
					sheetNum++;
					k = 2;
				}
				List data2 = (List)data.get(n);
				int dataSize = data2.size();
				for(int i=0;i<dataSize;i++){
					String dataValue = "";
					if(data2.get(i) != null && !data2.get(i).equals("")){
					  dataValue = data2.get(i).toString();
					}
					label=new Label(i,k,dataValue);
					sheet.addCell(label);
				 }
				k++;
				j++;
		   }
			//写入数据并关闭文件
			book.write();
			book.close();
		 }catch(Exception e){
			e.printStackTrace();
		 }
		return excelName;
	}


  /**
   *
   * @param Data    显示的数据
   */

  public static String writeExcelPage(String excelPath,String reportName,List data){
	  //打开文件
		 String fileName = "";
		 String excelName = "";
		 try{
			excelName =reportName+".xls";
			fileName = excelPath+System.getProperty("file.separator")+excelName;
			createFile(fileName);
			WritableWorkbook book = Workbook.createWorkbook(new File(fileName));
			//计算列数
			int j = 1;
			int k = 2;
			int sheetNum = 0;
			WritableSheet sheet = book.createSheet("第1页",sheetNum);
			int dataLen = data.size();
			for(int n=0;n<dataLen;n++){

				List data2 = (List)data.get(n);
				int dataSize = data2.size();
				for(int i=0;i<dataSize;i++){
					String dataValue = "";
					if(data2.get(i) != null && !data2.get(i).equals("")){
					  dataValue = data2.get(i).toString();
					}
					Label label=new Label(i,k,dataValue);
					sheet.addCell(label);
				 }
				k++;
				j++;
		   }
			//写入数据并关闭文件
			book.write();
			book.close();
		 }catch(Exception e){
			e.printStackTrace();
		 }
		return excelName;
}


  /**
   * 得到excel文件头名称的list
   * @param fileName excel文件
   * @return
   */
  public List getHeadList(String fileName){
    List headList = new ArrayList();
    try{
	  Workbook book = Workbook.getWorkbook(new File(fileName));
	  //获得第一个工作表对象
	  Sheet sheet=book.getSheet(0);
	  //得到excel文件的列的长度
	  int colLen = sheet.getColumns();
	  for(int i=0;i<colLen;i++){
	  	Cell cell = sheet.getCell(0,i);
	    headList.add(cell.getContents());
	  }
	  book.close();
    }catch(Exception e){
      e.printStackTrace();
    }
    return headList;
  }


    /**
     * 产生excel文件
     * @param fileName
     * @return
     * @throws java.io.IOException
     * @throws Exception
     */
	public static boolean createFile(String fileName)throws IOException ,Exception{
	   File file = new File(fileName);
	   if (file.exists()){
		  if (file.canWrite() == false)
			  return false;
	   }else{
		 String path = null;  /* Does not exist.  Create the directories */
		 int firstSlash = fileName.indexOf(File.separatorChar);
		 int finalSlash = fileName.lastIndexOf(File.separatorChar);
		 if(finalSlash == 0){
		 	/* error, not valid path */
		 }else if (finalSlash == 1){ /* UNIX root dir */
			path = File.separator;
	     }else if (firstSlash == finalSlash){ /* for example c:\\  Then make sure slash is part of path */
		    path = fileName.substring(0,finalSlash+1);
		 }else{ path = fileName.substring(0,finalSlash); }
			File dir = new File(path);
		    dir.mkdirs();
	     }
			 return true;
	  }


 /**
  * 从excel文件里读取数据,此方法只针对行列规则的excel文件
  * 返回结果是一行为一个list,整个文件本身为一个大的list
  * @param fileName excel文件名
  * @return
  */
 public static List readDataFromExcel(String fileName) throws Exception {
	List allDataList = new ArrayList();
 	try{
		InputStream is = new FileInputStream(fileName);//读取文件
		Workbook rwb = Workbook.getWorkbook(is);
		int sheetCount = rwb.getNumberOfSheets();
		System.out.println("表单总数==="+sheetCount);
		String[] sheetName= rwb.getSheetNames();
		for(int k=0;k<sheetCount;k++){
			System.out.println("表单名称==="+sheetName[k].toString());
			Sheet rs = rwb.getSheet(sheetName[k].toString());//得到第一个工作表单
			int col = rs.getColumns(); //得到excel文件的列数
			int rol = rs.getRows();//excel文件的行数
			System.out.println("得到excel文件的列数"+col);
			System.out.println("excel文件的行数"+rol);
			for(int j=0;j<rol;j++){
			   List rowList = new ArrayList();
			   for(int i=0;i<col;i++){
				  Cell cell = rs.getCell(i,j);
				  String data = cell.getContents();
				  rowList.add(data);
			   }
			   allDataList.add(rowList);
			}
		}
		is.close();
		rwb.close();
 	}catch(Exception e){
 		throw new Exception("导入文件格式错误");//导入文件格式错误
 	}

	return allDataList;
 }





 /**
  * 从excel文件里读取数据,此方法只针对行列规则的excel文件
  * 只读一个sheet的情况下
  * 返回结果是一行为一个list,整个文件本身为一个大的list
  * @param fileName excel文件名
  * @return
  */
 public List readDataFromExcelThrowsException(String fileName) {
	List allDataList = new ArrayList();
	try{
		InputStream is = new FileInputStream(fileName);//读取文件
		Workbook rwb = Workbook.getWorkbook(is);
		Sheet rs = rwb.getSheet(0);//得到第一个工作表单
		System.out.println(rs.getName());
		int col = rs.getColumns(); //得到excel文件的列数
		int rol = rs.getRows();//excel文件的行数
		for(int j=0;j<rol;j++){
		   List rowList = new ArrayList();
		   for(int i=0;i<col;i++){
			  Cell cell = rs.getCell(i,j);
			  String data = cell.getContents();
			  rowList.add(data);
		   }
		   allDataList.add(rowList);
		}
	}catch(Exception e){
		e.printStackTrace();
	}
     //删除空值
     for(int i=0;i<allDataList.size();i++){
         List tempList = (List) allDataList.get(i);
         int flag = 0;
         for(Object tempSting : tempList){
             if(!((String)tempSting).equals("")){
                 flag = 1;
                 break;
             }
         }
         if(flag == 0){
         allDataList.remove(i);}
     }

	return allDataList;
 }


 /**
   * 从excel文件里读取数据,此方法只针对行列规则的excel文件
   * 只读一个sheet的情况下
   * 返回结果是一行为一个list,整个文件本身为一个大的list
   * @param fileName excel文件名
   * @param sheet 选中的工作单元
   * @return
   */
 public List readDataFromExcelBySheet(String fileName,int sheet) throws Exception{
	 List allDataList = new ArrayList();
		 InputStream is = new FileInputStream(fileName);//读取文件
		 Workbook rwb = Workbook.getWorkbook(is);
		 Sheet rs = rwb.getSheet(sheet);//得到第一个工作表单
		 int col = rs.getColumns(); //得到excel文件的列数
		 int rol = rs.getRows();//excel文件的行数
		 for(int j=0;j<rol;j++){
			List rowList = new ArrayList();
			for(int i=0;i<col;i++){
			   Cell cell = rs.getCell(i,j);
			   String data = cell.getContents();
			   rowList.add(data);
			}
			allDataList.add(rowList);
		 }
	 return allDataList;
  }


/**
 * 得到excel的sheet map
 * @param fileName
 * @return
 * @throws Exception
 */
public HashMap getSheetNameMap(String fileName) throws Exception{
	InputStream is = new FileInputStream(fileName);//读取文件
    Workbook rwb = Workbook.getWorkbook(is);
    HashMap map = new HashMap();
    int sheetSize = rwb.getNumberOfSheets();
    for(int i=0;i<sheetSize;i++){
        map.put(new Integer(i),rwb.getSheet(i).getName());
    }
    return map;
}


 public static void main(String args[]){
    ExcelUtil util = new ExcelUtil();

 }


	public static String export_JXLS(Map dataMap, String fileName, String templatePath) {
		HttpServletRequest request = RequestContext.getRequest();
		XLSTransformer transformer = new XLSTransformer();
		String xlsTemplateFileName = request.getSession().getServletContext().getRealPath(templatePath);

		Map beans = new HashMap();
		beans.put("list1", dataMap.get("list1"));

		String path = "";
		try {
			File file = IOUtil.copyToTempDir(new File(xlsTemplateFileName));
			InputStream i = new FileInputStream(file);
			org.apache.poi.ss.usermodel.Workbook workbook = transformer.transformXLS(i, beans);

			String _savepath = IOUtil.getTempDir().getPath() + File.separatorChar + fileName;
			File _tempfile = IOUtil.createTempFile();
			OutputStream os = new FileOutputStream(_tempfile);
			workbook.write(os);
			IOUtil.copy(new FileInputStream(_tempfile), new FileOutputStream(_savepath));
			path = _savepath;
			os.close();
		} catch (IOException e) {
			//LOGGER.error("Stream读写出错", e);
		} catch (InvalidFormatException e) {
			//LOGGER.error("模板转换出错", e);
		}
		return path;
	}

}


         具体的保存到数据库中的方法就不详细写了,大体上的方法就是这样,大家可以试一试。当然了,由于各个机构公司使用的框架不同,后台业务逻辑不同,导致方法可能会有所小的改动,但是本质的方法都是一样的。例子中的框架是自己机构独有的,因此大家在测试的时候,不可照搬照照挪,要注意稍微改动下,本例只是一个启发的作用,希望能有更好的方法,欢迎留言讨论哦!

==================================================

后续:

        对于EXCEL导出,可能对于很多新手刚入行的程序员还是一个有点难度的问题。


       所以在这里的话,我也做了一个小的DEMO给大家,希望对于新人能够有所帮助和学习。这个小的DEMO在导入速度和性能上也都还好,EXCEL单个sheet中最多支持的20000条数据,我做了下测试,只需要1分12秒的时候解析完成,还是很快的。当然了,对于大神来说,这可能不算什么,也许代码还能继续优化,希望看过DEMO的网友能够继续优化,也欢迎大家更多和我分享和交流。(DEMO下载地址: http://download.csdn.net/download/samile6899/10171204 )






以上是关于POI操纵EXCEL文档之导入文档的主要内容,如果未能解决你的问题,请参考以下文章

使用poi包读写excel需要导入哪几个jar包

POI导入导出

SpringMVC 5.0.4集成easyexcel读取excel文档

Java 导入Excel文件到数据库

NPOI导入,导出

使用struts2和poi导出excel文档