spring mvc上传下载文件
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前端jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <base href="<%=basePath%>"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>文件上传</title> <link href="js/b/css/bootstrap.min.css" rel="stylesheet"> <link href="js/b/css/bootstrap-theme.min.css" rel="stylesheet"> <link href="css/theme.css" rel="stylesheet"> <script src="js/b/js/jquery-1.11.1.min.js"></script> <script src="js/b/js/bootstrap.min.js"></script> <script src="js/ajaxfileupload.js"></script> <script src="js/index.js"></script> </head> <body > <h2>表单提交的方式上传文件</h2> <form method="post" action="file/upload.do" enctype="multipart/form-data"> file:<input type="file" name="file" id="file" /><br> id:<input type="text" name="id" value="123" id="id" /><br> <input type="submit" value="提交" /> </form> <hr> <h2>ajax文件上传方式</h2> file:<input type="file" name="file1" id="file1" /> <input type="button" value="上传" id="btn01Id" /> </body> </html>
前端js
/** * 页面加载之后执行的函数；===================================== */ $(function() { }); /** * 元素事件注册函数；===================================== */ $(function() { $(‘#btn01Id‘).click(btn01IdClick); }); /** * 全局变量定义部分；===================================== */ var i = 0; /** * 事件编写部分；===================================== */ function btn01IdClick(e) { if(!$("#file1").val()){ return ; } var sendData = { "id" : 123 }; $.ajaxFileUpload({ url:‘file/upload.do‘, secureuri:false, fileElementId:‘file1‘, data : sendData, timeOut : 5000, success: function (data, status){ alert("上传成功！"); }, error: function (data, status, e){ alert("上传出错："+e); } }); }
ajaxfileuploadjs
jQuery.extend({ createUploadIframe: function(id, uri) { //create frame var frameId = ‘jUploadFrame‘ + id; var iframeHtml = ‘<iframe id="‘ + frameId + ‘" name="‘ + frameId + ‘" style="position:absolute; top:-9999px; left:-9999px"‘; if(window.ActiveXObject) { if(typeof uri== ‘boolean‘){ iframeHtml += ‘ src="‘ + ‘javascript:false‘ + ‘"‘; } else if(typeof uri== ‘string‘){ iframeHtml += ‘ src="‘ + uri + ‘"‘; } } iframeHtml += ‘ />‘; jQuery(iframeHtml).appendTo(document.body); return jQuery(‘#‘ + frameId).get(0); }, createUploadForm: function(id, fileElementId, data) { //create form var formId = ‘jUploadForm‘ + id; var fileId = ‘jUploadFile‘ + id; var form = jQuery(‘<form action="" method="POST" name="‘ + formId + ‘" id="‘ + formId + ‘" enctype="multipart/form-data"></form>‘); if(data) { for(var i in data) { jQuery(‘<input type="hidden" name="‘ + i + ‘" value="‘ + data[i] + ‘" />‘).appendTo(form); } } var oldElement = jQuery(‘#‘ + fileElementId); var newElement = jQuery(oldElement).clone(); jQuery(oldElement).attr(‘id‘, fileId); jQuery(oldElement).before(newElement); jQuery(oldElement).appendTo(form); //set attributes jQuery(form).css(‘position‘, ‘absolute‘); jQuery(form).css(‘top‘, ‘-1200px‘); jQuery(form).css(‘left‘, ‘-1200px‘); jQuery(form).appendTo(‘body‘); return form; }, ajaxFileUpload: function(s) { // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout s = jQuery.extend({}, jQuery.ajaxSettings, s); var id = new Date().getTime() var form = jQuery.createUploadForm(id, s.fileElementId, (typeof(s.data)==‘undefined‘?false:s.data)); var io = jQuery.createUploadIframe(id, s.secureuri); var frameId = ‘jUploadFrame‘ + id; var formId = ‘jUploadForm‘ + id; // Watch for a new set of requests if ( s.global && ! jQuery.active++ ) { jQuery.event.trigger( "ajaxStart" ); } var requestDone = false; // Create the request object var xml = {} if ( s.global ) jQuery.event.trigger("ajaxSend", [xml, s]); // Wait for a response to come back var uploadCallback = function(isTimeout) { var io = document.getElementById(frameId); try { if(io.contentWindow) { xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null; xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document; }else if(io.contentDocument) { xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null; xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document; } }catch(e) { jQuery.handleError(s, xml, null, e); } if ( xml || isTimeout == "timeout") { requestDone = true; var status; try { status = isTimeout != "timeout" ? "success" : "error"; // Make sure that the request was successful or notmodified if ( status != "error" ) { // process the data (runs the xml through httpData regardless of callback) var data = jQuery.uploadHttpData( xml, s.dataType ); // If a local callback was specified, fire it and pass it the data if ( s.success ) s.success( data, status ); // Fire the global callback if( s.global ) jQuery.event.trigger( "ajaxSuccess", [xml, s] ); } else jQuery.handleError(s, xml, status); } catch(e) { status = "error"; jQuery.handleError(s, xml, status, e); } // The request was completed if( s.global ) jQuery.event.trigger( "ajaxComplete", [xml, s] ); // Handle the global AJAX counter if ( s.global && ! --jQuery.active ) jQuery.event.trigger( "ajaxStop" ); // Process result if ( s.complete ) s.complete(xml, status); jQuery(io).unbind() setTimeout(function() { try { jQuery(io).remove(); jQuery(form).remove(); } catch(e) { jQuery.handleError(s, xml, null, e); } }, 100) xml = null } } // Timeout checker if ( s.timeout > 0 ) { setTimeout(function(){ // Check to see if the request is still happening if( !requestDone ) uploadCallback( "timeout" ); }, s.timeout); } try { var form = jQuery(‘#‘ + formId); jQuery(form).attr(‘action‘, s.url); jQuery(form).attr(‘method‘, ‘POST‘); jQuery(form).attr(‘target‘, frameId); if(form.encoding) { jQuery(form).attr(‘encoding‘, ‘multipart/form-data‘); } else { jQuery(form).attr(‘enctype‘, ‘multipart/form-data‘); } jQuery(form).submit(); } catch(e) { jQuery.handleError(s, xml, null, e); } jQuery(‘#‘ + frameId).load(uploadCallback ); return {abort: function () {}}; }, uploadHttpData: function( r, type ) { var data = !type; data = type == "xml" || data ? r.responseXML : r.responseText; // If the type is "script", eval it in global context if ( type == "script" ) jQuery.globalEval( data ); // Get the JavaScript object, if JSON is used. if ( type == "json" ) eval( "data = " + data ); // evaluate scripts within html if ( type == "html" ) jQuery("<div>").html(data).evalScripts(); return data; } })
后端controller
package com.srie.fileud.controller; import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.OutputStream; import java.io.UnsupportedEncodingException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; @Controller @RequestMapping("/file") public class FileUD { @ResponseBody @RequestMapping("/upload") public String uploadFile(HttpServletRequest request, MultipartFile file1, Integer id) { System.out.println("id is : "+id); String name = file1.getName(); System.out.println("name : "+name); String contentType = file1.getContentType(); System.out.println("contentType : "+contentType); String originalFilename = file1.getOriginalFilename(); System.out.println("originalFilename: "+originalFilename); long size = file1.getSize(); System.out.println("size: "+size); boolean empty = file1.isEmpty(); System.out.println("empty: "+empty); File saveFile = new File(request.getServletContext().getRealPath("/file"), originalFilename); try { file1.transferTo(saveFile); } catch (Exception e) { e.printStackTrace(); } return "asdf"; } @ResponseBody @RequestMapping(value="/download") public String downFile(HttpServletRequest request, HttpServletResponse response){ String directory = request.getServletContext().getRealPath("/file"); File file = new File(directory,"123"); if(file.exists()){ response.setContentType("application/octet-stream;charset=ISO8859-1"); String name = "《中文》09aa囿気.docx"; String name2 = "a.docx"; try { name2 = new String(name.getBytes(),"ISO8859-1"); } catch (UnsupportedEncodingException e1) { e1.printStackTrace(); } response.addHeader("content-disposition", "attachment;filename="+name2); byte[] buffer = new byte[1024]; FileInputStream fis = null; BufferedInputStream bis = null; try { fis = new FileInputStream(file); bis = new BufferedInputStream(fis); OutputStream os = response.getOutputStream(); int i = bis.read(buffer); while(i!=-1){ os.write(buffer,0,i); i = bis.read(buffer); } } catch (Exception e) { e.printStackTrace(); }finally { if(bis!=null){ try { bis.close(); } catch (Exception e2) { e2.printStackTrace(); } } if(fis != null){ try { fis.close(); } catch (Exception e2) { e2.printStackTrace(); } } } } return null; } }
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>fileud</display-name> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:beans.xml</param-value> </context-param> <servlet> <servlet-name>springMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springMVC</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <filter> <filter-name>characterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>*.do</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <context-param> <param-name>spring.profiles.active</param-name> <param-value>dev</param-value> </context-param> <context-param> <param-name>spring.profiles.default</param-name> <param-value>dev</param-value> </context-param> <context-param> <param-name>spring.liveBeansView.mbeanDomain</param-name> <param-value>dev</param-value> </context-param> </web-app>
springmvc.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.directwebremoting.org/schema/spring-dwr http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd"> <!-- spring mvc 注解驱动 --> <mvc:annotation-driven /> <!-- 扫描器 --> <context:component-scan base-package="com.srie.fileud.controller" /> <!-- 配置视图 解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <!-- 前缀和后缀 --> <property name="prefix" value="/WEB-INF/jsp/"></property> <property name="suffix" value=".jsp"></property> </bean> <!-- 文件上传配置 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="maxUploadSize" value="200000" /> </bean> <!-- 从请求和响应读取/编写字符串 --> <bean id="stringHttpMessage" class="org.springframework.http.converter.StringHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/plain;charset=UTF-8</value> </list> </property> </bean> <!-- 用于将对象转换为JSON --> <bean id="jsonConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"></bean> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="stringHttpMessage" /> <ref bean="jsonConverter" /> </list> </property> </bean> </beans>
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