ssm框架搭建+easyui增删改查实现
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ssm框架搭建+easyui增删改查实现
caiyezi 发表于2年前
ssm框架搭建+easyui增删改查实现
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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>
            &nbsp;用户名:&nbsp;<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" />&nbsp;<span style="color: red">*</span>
                        </td>
                        <td>&nbsp;&nbsp;&nbsp;&nbsp;</td>
                        <td>密码:</td>
                        <td><input type="password" id="password" name="password" class="easyui-validatebox" required="true" />&nbsp;<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" />&nbsp;<span style="color: red">*</span>
                        </td>
                        <td>&nbsp;&nbsp;&nbsp;&nbsp;</td>
                        <td>邮箱:</td>
                        <td><input type="text" id="email" name="email" validType="email" class="easyui-validatebox" required="true" />&nbsp;<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" />&nbsp;<span style="color: red">*</span>
                        </td>
                        <td>&nbsp;&nbsp;&nbsp;&nbsp;</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> &nbsp;<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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