SSM框架搭建+easyui增删改查
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转载于：http://www.cnblogs.com/caiya928/p/4851686.html?utm_source=tuicool&utm_medium=referral
闲来无事，看了看别人的博客文档也跟着敲了敲，特地记录下来，方便以后学习：
spring版本：4.0.6
mybatis版本：3.2.5
所有jar包打包下载：http://pan.baidu.com/s/1qLEaU
1、项目目录结构
其中，controller包下存放控制层文件，dao下存放各个model类相关的数据库操作接口，entity下放置各种model类，mappers下放置各个dao对应的映射文件，service服务层就不说了，放置各种service接口，impl是其具体实现类。
2、web.xml文件配置
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name></display-name>
<welcome-file-list>
<welcome-file>login.jsp</welcome-file>
</welcome-file-list>
<!-- Spring配置文件 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!-- 编码过滤器 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<async-supported>true</async-supported>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 配置Spring监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 添加对SpringMVC的支持 -->
<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:spring-mvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
3、log4j.properties配置日志
log4j.rootLogger=DEBUG, Console #Console log4j.appender.Console=org.apache.log4j.ConsoleAppender log4j.appender.Console.layout=org.apache.log4j.PatternLayout log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n log4j.logger.java.sql.ResultSet=INFO log4j.logger.org.apache=INFO log4j.logger.java.sql.Connection=DEBUG log4j.logger.java.sql.Statement=DEBUG log4j.logger.java.sql.PreparedStatement=DEBUG
4、mybatis-config.xml配置
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 别名 -->
<typeAliases>
<package name="com.java.entity" /> <!-- 后面书写类全名时默认加该包名前缀如：<resultMap type="User"... -->
</typeAliases>
</configuration>
5、spring-mvc.xml配置
<?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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<!-- 使用注解的包，包括子集 -->
<context:component-scan base-package="com.java.controller"></context:component-scan>
<!-- 视图解析器 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
6、applicationContext.xml配置
<?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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<!-- 自动扫描该包下面的bean文件 -->
<context:component-scan base-package="com.java.service"></context:component-scan>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<!-- <property name="driverClassName" value="com.microsoft.sqlserver.jdbc.SQLServerDriver"/> -->
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/crm"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</bean>
<!-- 配置MyBatis的sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<property name="mapperLocations" value="classpath:com/java/mappers/*.xml"></property>
</bean>
<!-- Mapper接口所在包名，Spring会自动查找其下的Mapper -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.java.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!-- 配置transactionManager事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 配置事物通知属性 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<!-- 定义事物传播特性 -->
<tx:attributes>
<tx:method name="insert" propagation="REQUIRED"/>
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="edit*" propagation="REQUIRED" />
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="new*" propagation="REQUIRED" />
<tx:method name="set*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="change*" propagation="REQUIRED" />
<tx:method name="check*" propagation="REQUIRED" />
<tx:method name="get*" propagation="REQUIRED" read-only="true" />
<tx:method name="find*" propagation="REQUIRED" read-only="true" />
<tx:method name="load*" propagation="REQUIRED" read-only="true" />
<tx:method name="*" propagation="REQUIRED" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- 配置事物切面 -->
<aop:config>
<aop:pointcut expression="execution(* com.java.service.*.*(..))" id="serviceOperation"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="serviceOperation"/>
</aop:config>
</beans>
7、增删改查具体实现
主界面很简单：
详细html实现：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP ‘userManage.jsp‘ starting page</title>
<link rel="stylesheet" type="text/css"
href="${pageContext.request.contextPath}/jquery-easyui-1.3.3/themes/default/easyui.css">
<link rel="stylesheet" type="text/css"
href="${pageContext.request.contextPath}/jquery-easyui-1.3.3/themes/icon.css">
<script type="text/javascript"
src="${pageContext.request.contextPath}/jquery-easyui-1.3.3/jquery.min.js"></script>
<script type="text/javascript"
src="${pageContext.request.contextPath}/jquery-easyui-1.3.3/jquery.easyui.min.js"></script>
<script type="text/javascript"
src="${pageContext.request.contextPath}/jquery-easyui-1.3.3/locale/easyui-lang-zh_CN.js"></script>
<script type="text/javascript">
var url;
function searchUser() {
$("#dg").datagrid(‘load‘, {
"userName" : $("#s_userName").val()
});
}
function openUserAddDialog() {
$("#dlg").dialog("open").dialog("setTitle", "添加用户信息");
url = "${pageContext.request.contextPath}/user/save.do";
}
function openUserModifyDialog() {
var selectedRows = $("#dg").datagrid("getSelections");
if (selectedRows.length != 1) {
$.messager.alert("系统提示", "请选择一条要编辑的数据！");
return;
}
var row = selectedRows[0];
$("#dlg").dialog("open").dialog("setTitle", "编辑用户信息");
$("#fm").form("load", row);
url = "${pageContext.request.contextPath}/user/save.do?id=" + row.id;
}
function saveUser() {
$("#fm").form("submit", {
url : url,
onSubmit : function() {
if ($("#roleName").combobox("getValue") == "") {
$.messager.alert("系统提示", "请选择用户角色！");
return false;
}
return $(this).form("validate");
},
success : function(result) {
var result = eval(‘(‘ + result + ‘)‘);
if (result.success) {
$.messager.alert("系统提示", "保存成功！");
resetValue();
$("#dlg").dialog("close");
$("#dg").datagrid("reload");
} else {
$.messager.alert("系统提示", "保存失败！");
return;
}
}
});
}
function resetValue() {
$("#userName").val("");
$("#password").val("");
$("#trueName").val("");
$("#email").val("");
$("#phone").val("");
$("#roleName").combobox("setValue", "");
}
function closeUserDialog() {
$("#dlg").dialog("close");
resetValue();
}
function deleteUser() {
var selectedRows = $("#dg").datagrid("getSelections");
if (selectedRows.length == 0) {
$.messager.alert("系统提示", "请选择要删除的数据！");
return;
}
var strIds = [];
for ( var i = 0; i < selectedRows.length; i++) {
strIds.push(selectedRows[i].id);
}
var ids = strIds.join(",");
$.messager.confirm("系统提示", "您确定要删除这<font color=red>"
+ selectedRows.length + "</font>条数据吗？", function(r) {
if (r) {
$.post("${pageContext.request.contextPath}/user/delete.do", {
ids : ids
}, function(result) {
if (result.success) {
$.messager.alert("系统提示", "数据已成功删除！");
$("#dg").datagrid("reload");
} else {
$.messager.alert("系统提示", "数据删除失败，请联系系统管理员！");
}
}, "json");
}
});
}
</script>
</head>
<body style="margin: 1px">
<table id="dg" title="用户管理" class="easyui-datagrid" fitColumns="true"
pagination="true" rownumbers="true"
url="${pageContext.request.contextPath}/user/list.do" fit="true"
toolbar="#tb">
<thead>
<tr>
<th field="cb" checkbox="true" align="center"></th>
<th field="id" width="50" align="center">编号</th>
<th field="userName" width="50" align="center">用户名</th>
<th field="password" width="50" align="center">密码</th>
<th field="trueName" width="50" align="center">真实姓名</th>
<th field="email" width="50" align="center">邮件</th>
<th field="phone" width="50" align="center">联系电话</th>
<th field="roleName" width="50" align="center">角色</th>
</tr>
</thead>
</table>
<div id="tb">
<a href="javascript:openUserAddDialog()" class="easyui-linkbutton"
iconCls="icon-add" plain="true">添加</a> <a
href="javascript:openUserModifyDialog()" class="easyui-linkbutton"
iconCls="icon-edit" plain="true">修改</a> <a
href="javascript:deleteUser()" class="easyui-linkbutton"
iconCls="icon-remove" plain="true">删除</a>
<div>
用户名： <input type="text" id="s_userName" size="20"
onkeydown="if(event.keyCode == 13)searchUser()" /> <a
href="javascript:searchUser()" class="easyui-linkbutton"
iconCls="icon-search" plain="true">查询</a>
</div>
<div id="dlg-buttons">
<a href="javascript:saveUser()" class="easyui-linkbutton"
iconCls="icon-ok">保存</a> <a href="javascript:closeUserDialog()"
class="easyui-linkbutton" iconCls="icon-cancel">关闭</a>
</div>
<div id="dlg" class="easyui-dialog"
style="width: 730px;height:280px;padding:10px 10px;" closed="true"
buttons="#dlg-buttons">
<form method="post" id="fm">
<table cellspacing="8px;">
<tr>
<td>用户名：</td>
<td><input type="text" id="userName" name="userName"
class="easyui-validatebox" required="true" /> <span
style="color: red">*</span>
</td>
<td> </td>
<td>密码：</td>
<td><input type="password" id="password" name="password"
class="easyui-validatebox" required="true" /> <span
style="color: red">*</span>
</td>
</tr>
<tr>
<td>真实姓名：</td>
<td><input type="text" id="trueName" name="trueName"
class="easyui-validatebox" required="true" /> <span
style="color: red">*</span>
</td>
<td> </td>
<td>邮箱：</td>
<td><input type="text" id="email" name="email"
validType="email" class="easyui-validatebox" required="true" /> <span
style="color: red">*</span>
</td>
</tr>
<tr>
<td>联系电话：</td>
<td><input type="text" id="phone" name="phone"
class="easyui-validatebox" required="true" /> <span
style="color: red">*</span>
</td>
<td> </td>
<td>用户角色：</td>
<td><select name="roleName" class="easyui-combobox"
id="roleName" style="width: 154px;" editable="false"
panelHeight="auto">
<option value="">请选择角色</option>
<option value="系统管理员">系统管理员</option>
<option value="销售主管">销售主管</option>
<option value="客户经理">客户经理</option>
<option value="高管">高管</option>
</select> <span style="color: red">*</span>
</td>
</tr>
</table>
</form>
</div>
</body>
</html>
再来看看目录结构：
UserController：
package com.java.controller;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import com.java.entity.PageBean;
import com.java.entity.User;
import com.java.service.UserService;
import com.java.util.ResponseUtil;
import com.java.util.StringUtil;
import com.sun.mail.iap.Response;
/**
* 用户Controller层
* @author Administrator
*
*/
@Controller
@RequestMapping("/user")
public class UserController {
@Resource
private UserService userService;
/**
* 删除用户
* @param ids
* @param res
* @return
* @throws Exception
*/
@RequestMapping("/delete")
public String delete(@RequestParam(value="ids") String ids,HttpServletResponse res) throws Exception{
String[] idStr = ids.split(",");
JSONObject jsonObject = new JSONObject();
for (String id : idStr) {
userService.delete(Integer.parseInt(id));
}
jsonObject.put("success", true);
ResponseUtil.write(res, jsonObject);
return null;
}
/**
* 添加或者修改
* @param user
* @param res
* @return
* @throws Exception
*/
@RequestMapping("/save")
public String save(User user,HttpServletResponse res) throws Exception{
//操作记录条数，初始化为0
int resultTotal = 0;
if (user.getId() == null) {
resultTotal = userService.add(user);
}else{
resultTotal = userService.update(user);
}
JSONObject jsonObject = new JSONObject();
if(resultTotal > 0){ //说明修改或添加成功
jsonObject.put("success", true);
}else{
jsonObject.put("success", false);
}
ResponseUtil.write(res, jsonObject);
return null;
}
/**
* 用户登录
* @param user
* @param request
* @return
* @throws Exception
*/
@RequestMapping("/login")
public String login(User user, HttpServletRequest request) throws Exception{
User resultUser = userService.login(user);
if (resultUser == null) {
request.setAttribute("user", resultUser);
request.setAttribute("errorMsg", "用户名或密码错误");
return "login";
}else {
HttpSession session = request.getSession();
session.setAttribute("currentUser", resultUser);
return "redirect:/main.jsp";
}
}
/**
* 用户分页查询
* @param page
* @param rows
* @param s_user
* @param res
* @return
* @throws Exception
*/
@RequestMapping("/list")
public String list(@RequestParam(value="page",required=false) String page,@RequestParam(value="rows",required=false) String rows,User s_user,HttpServletResponse res) throws Exception{
PageBean pageBean=new PageBean(Integer.parseInt(page),Integer.parseInt(rows));
Map<String,Object> map=new HashMap<String,Object>();
map.put("userName", StringUtil.formatLike(s_user.getUserName()));
map.put("start", pageBean.getStart());
map.put("size", pageBean.getPageSize());
List<User> userList=userService.find(map);
Long total=userService.getTotal(map);
JSONObject result=new JSONObject();
JSONArray jsonArray=JSONArray.fromObject(userList);
result.put("rows", jsonArray);
result.put("total", total);
ResponseUtil.write(res, result);
return null;
}
}
UserDao：
package com.java.dao;
import java.util.List;
import java.util.Map;
import com.java.entity.User;
/**
* 用户DAO接口
*
* @author Administrator
*
*/
public interface UserDao {
/**
* 用户登录
* @param user
* @return
*/
public User login(User user);
/**
* 用户查询
* @param map
* @return用户集合
*/
public List<User> find(Map<String, Object> map);
/**
* 获取总记录数
* @param map
* @return获取的total数
*/
public Long getTotal(Map<String, Object> map);
/**
* 修改用户
* @param user
* @return影响的记录数
*/
public int update(User user);
/**
* 添加用户
* @param user
* @return影响的记录数
*/
public int add(User user);
/**
* 删除用户
* @param id
* @return
*/
public int delete(Integer id);
}
PageBean，用来分页的一个工具类：
package com.java.entity;
/**
* 分页Model类
* @author
*
*/
public class PageBean {
private int page; // 第几页
private int pageSize; // 每页记录数
private int start; // 起始页
public PageBean(int page, int pageSize) {
super();
this.page = page;
this.pageSize = pageSize;
}
public int getPage() {
return page;
}
public void setPage(int page) {
this.page = page;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getStart() {
return (page-1)*pageSize;
}
}
User，用户实体类：
package com.java.entity;
/**
* 用户实体
* @author Administrator
*
*/
public class User {
private Integer id;
private String userName;
private String password;
private String trueName;
private String email;
private String phone;
private String roleName; //角色名称：系统管理员、销售主管、客户经理、高管
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getTrueName() {
return trueName;
}
public void setTrueName(String trueName) {
this.trueName = trueName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getRoleName() {
return roleName;
}
public void setRoleName(String roleName) {
this.roleName = roleName;
}
}
UserService：
package com.java.service;
import java.util.List;
import java.util.Map;
import com.java.entity.User;
/**
* UserService接口
* @author Administrator
*
*/
public interface UserService {
/**
* 用户登录
* @param user
* @return
*/
public User login(User user);
/**
* 用户查询
* @param map
* @return
*/
public List<User> find(Map<String, Object> map);
/**
* 获取总记录数
* @param map
* @return
*/
public Long getTotal(Map<String, Object> map);
/**
* 修改用户
* @param user
* @return影响的记录数
*/
public int update(User user);
/**
* 添加用户
* @param user
* @return影响的记录数
*/
public int add(User user);
/**
* 删除用户
* @param id
* @return
*/
public int delete(Integer id);
}
UserServiceImpl：
package com.java.service.impl;
import java.util.List;
import java.util.Map;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.java.dao.UserDao;
import com.java.entity.User;
import com.java.service.UserService;
/**
* UserService实现类
* @author Administrator
*
*/
@Service("userService")
public class UserServiceImpl implements UserService{
@Resource
private UserDao userDao;
@Override
public User login(User user) {
return userDao.login(user);
}
@Override
public List<User> find(Map<String, Object> map) {
return userDao.find(map);
}
@Override
public Long getTotal(Map<String, Object> map) {
return userDao.getTotal(map);
}
@Override
public int update(User user) {
return userDao.update(user);
}
@Override
public int add(User user) {
return userDao.add(user);
}
@Override
public int delete(Integer id) {
return userDao.delete(id);
}
}
ResponseUtil工具类，主要用于返回json数据：
package com.java.util;
import java.io.PrintWriter;
import javax.servlet.http.HttpServletResponse;
public class ResponseUtil {
public static void write(HttpServletResponse response,Object object)throws Exception{
response.setContentType("text/html;charset=utf-8");
PrintWriter out=response.getWriter();
out.println(object);
out.flush();
out.close();
}
}
StringUtil，字符串工具类：
package com.java.util;
/**
* 字符串工具类
* @author
*
*/
public class StringUtil {
/**
* 判断是否是空
* @param str
* @return
*/
public static boolean isEmpty(String str){
if(str==null||"".equals(str.trim())){
return true;
}else{
return false;
}
}
/**
* 判断是否不是空
* @param str
* @return
*/
public static boolean isNotEmpty(String str){
if((str!=null)&&!"".equals(str.trim())){
return true;
}else{
return false;
}
}
/**
* 格式化模糊查询
* @param str
* @return
*/
public static String formatLike(String str){
if(isNotEmpty(str)){
return "%"+str+"%";
}else{
return null;
}
}
}
UserMapper.xml，mybatis所谓的动态sql语句，全部封装在这里：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.java.dao.UserDao">
<!-- 先定义一个Interface，UserMapper，然后Mapper文件的namespace指向的就是这个Interface， UserInterface里定义的方法和UserMapper.xml文件中的一样,
然后代码里直接使用接口 -->
<resultMap type="User" id="UserResult">
<result property="id" column="id" />
<result property="userName" column="userName" />
<result property="password" column="password" />
<result property="trueName" column="trueName" />
<result property="email" column="email" />
<result property="phone" column="phone" />
<result property="roleName" column="roleName" />
</resultMap>
<!-- 所谓的动态SQL语句 -->
<select id="login" parameterType="User" resultMap="UserResult">
select * from userInfo where userName = #{userName} and password = #{password} and roleName = #{roleName}
</select>
<!-- 用户查询 -->
<select id="find" parameterType="Map" resultMap="UserResult">
select * from userInfo
<where>
<if test="userName!=null and userName!=‘‘ ">
and userName like #{userName}
</if>
</where>
<if test="start!=null and size!=null">
limit #{start},#{size}
</if>
</select>
<select id="getTotal" parameterType="Map" resultType="Long">
select count(*) from userInfo
<where>
<if test="userName!=null and userName!=‘‘ ">
and userName like #{userName}
</if>
</where>
</select>
<!-- 用户添加 -->
<insert id="add" parameterType="User">
insert into userInfo values(null,#{userName},#{password},#{trueName},#{email},#{phone},#{roleName})
</insert>
<!-- 用户修改 -->
<update id="update" parameterType="User">
update userInfo
<set>
<if test="userName != null and userName != ‘‘">userName = #{userName},</if>
<if test="password != null and password != ‘‘">password = #{password},</if>
<if test="trueName != null and trueName != ‘‘">trueName = #{trueName},</if>
<if test="email != null and email != ‘‘">email = #{email},</if>
<if test="phone != null and phone != ‘‘">phone = #{phone},</if>
<if test="roleName != null and roleName != ‘‘">roleName = #{roleName},</if>
</set>
where id = #{id}
</update>
<!-- 用户删除 -->
<delete id="delete" parameterType="Integer">
delete from userInfo where id = #{id}
</delete>
</mapper>
最后是数据表结构：
相比hibernate，mybatis轻量级很多，但是新手最容易也最难搞定的往往是环境搭建部分，一不留神就是各种jar包冲突，真叫人抓狂啊啊，以后还得留意呵。
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