Mybatis逆向工程——（十四）

　　逆向工程可以快速将数据库的表生成JavaBean，同时生成对单标操作的Mapper.java与Mapper.xml，极大地提高了开发速度。

1.jar包

　　

2.配置文件

　　需要修改数据库连接信息，mapper生成目录与pojo生成位置，也要修改要导出的表。

　　工程目录下配置generatorConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
    <context id="testTables" targetRuntime="MyBatis3">
        <commentGenerator>
            <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://localhost:3306/exam" userId="root"
            password="123456">
        </jdbcConnection>
        <!-- <jdbcConnection driverClass="oracle.jdbc.OracleDriver"
            connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:yycg" 
            userId="yycg"
            password="yycg">
        </jdbcConnection> -->

        <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和 
            NUMERIC 类型解析为java.math.BigDecimal -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- targetProject:生成PO类的位置 -->
        <javaModelGenerator targetPackage="cn.xm.pojo"
            targetProject=".\src">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
            <!-- 从数据库返回的值被清理前后的空格 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- targetProject:mapper映射文件生成的位置 -->
        <sqlMapGenerator targetPackage="cn.xm.mapper" 
            targetProject=".\src">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        <!-- targetPackage：mapper接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER"
            targetPackage="cn.xm.mapper" 
            targetProject=".\src">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        <!-- 指定数据库表 -->
        <table tableName="blacklist"></table>    
        <table tableName="breakrules"></table>    
        <table tableName="checkrecord"></table>    
        <table tableName="department"></table>    
        <table tableName="dictionary"></table>    
        <table tableName="employee_in"></table>    
        <table tableName="employee_out"></table>    
        <table tableName="employeeexam"></table>    
        <table tableName="exam"></table>    
        <table tableName="exampaper"></table>    
        <table tableName="historypaperoption"></table>    
        <table tableName="historypaperquestion"></table>    
        <table tableName="newsrecord"></table>    
        <table tableName="onlineexamanswerinfor"></table>    
        <table tableName="onlineexaminfor"></table>    
        <table tableName="options"></table>    
        <table tableName="permission"></table>    
        <table tableName="pictureindex"></table>    
        <table tableName="project"></table>    
        <table tableName="questionbank"></table>    
        <table tableName="questions"></table>    
        <table tableName="role"></table>    
        <table tableName="rolepermission"></table>    
        <table tableName="traincontent"></table>    
        <table tableName="unit"></table>    
        <table tableName="unitproject"></table>    
        <table tableName="userrole"></table>    

    </context>
</generatorConfiguration>

 

3.  Java程序

package mybatisInverse;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;

public class GeneratorSqlmap
{
  public void generator()
    throws Exception
  {
    List<String> warnings = new ArrayList();
    boolean overwrite = true;
    
    File configFile = new File("generatorConfig.xml");
    ConfigurationParser cp = new ConfigurationParser(warnings);
    Configuration config = cp.parseConfiguration(configFile);
    DefaultShellCallback callback = new DefaultShellCallback(overwrite);
    MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, 
      callback, warnings);
    myBatisGenerator.generate(null);
  }
  
  public static void main(String[] args)
    throws Exception
  {
    try
    {
      GeneratorSqlmap generatorSqlmap = new GeneratorSqlmap();
      generatorSqlmap.generator();
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
  }
}

 

运行结果:

 

4.使用生成的代码:

　　对单表操作较方便，可以自定义条件查询。

 

 

sqlMapConfig.xml

<?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>

    <!-- 加载属性文件 -->
    <properties resource="db.properties">
        <!--properties中还可以配置一些属性名和属性值  -->
        <!-- <property name="jdbc.driver" value=""/> -->
    </properties>
    <!-- 全局配置参数，需要时再设置 -->
    <!-- <settings>
    
    </settings> -->
    
    <!-- 别名定义 -->
    <typeAliases>
        
        <!-- 针对单个别名定义
        type：类型的路径
        alias：别名
         -->
        <!-- <typeAlias type="cn.itcast.mybatis.po.User" alias="user"/> -->
        <!-- 批量别名定义 
        指定包名，mybatis自动扫描包中的po类，自动定义别名，别名就是类名（首字母大写或小写都可以）
        -->
        <package name="cn.xm.pojo"/>
        
    </typeAliases>
    
    <!-- 和spring整合后 environments配置将废除-->
    <environments default="development">
        <environment id="development">
        <!-- 使用jdbc事务管理，事务控制由mybatis-->
            <transactionManager type="JDBC" />
        <!-- 数据库连接池，由mybatis管理-->
            <dataSource type="POOLED">
                <property name="driver" value="${jdbc.driver}" />
                <property name="url" value="${jdbc.url}" />
                <property name="username" value="${jdbc.username}" />
                <property name="password" value="${jdbc.password}" />
            </dataSource>
        </environment>
    </environments>
    <!-- 加载 映射文件 -->
    <mappers>
        <!--通过resource方法一次加载一个映射文件 -->
        <!-- <mapper resource="mapper/UserMapper.xml"/> -->
        
        <!-- 通过mapper接口加载单个 映射文件
        遵循一些规范：需要将mapper接口类名和mapper.xml映射文件名称保持一致，且在一个目录 中
        上边规范的前提是：使用的是mapper代理方法
         -->
        <!-- <mapper class="cn.itcast.mybatis.mapper.UserMapper"/> -->
        
        <!-- 批量加载mapper
        指定mapper接口的包名，mybatis自动扫描包下边所有mapper接口进行加载
        遵循一些规范：需要将mapper接口类名和mapper.xml映射文件名称保持一致，且在一个目录 中
        上边规范的前提是：使用的是mapper代理方法
         -->
        <package name="cn.xm.mapper"/>

    </mappers>
    
</configuration>

 

 

java代码:

package cn.xm.test;

import java.io.InputStream;
import java.net.URL;
import java.util.Date;
import java.util.List;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.apache.tomcat.jdbc.pool.interceptor.SlowQueryReportJmxMBean;
import org.junit.Before;
import org.junit.Test;

import cn.xm.mapper.EmployeeInMapper;
import cn.xm.pojo.EmployeeIn;
import cn.xm.pojo.EmployeeInExample;

public class MybatisTest {

    private SqlSessionFactory sqlSessionFactory;

    @Before
    public void setUp() throws Exception {
        // 将全局配置文件作为一个流
        String resource = "sqlMapConfig.xml";
        URL realPath2 = Resources.getResourceURL("sqlMapConfig.xml");
        InputStream inputStream = Resources.getResourceAsStream(resource);
        // 建立一个SqlSession工厂
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
    }

    // 测试增加
    @Test
    public void testAdd() throws Exception {

        SqlSession sqlSession = sqlSessionFactory.openSession();
        EmployeeInMapper eim = sqlSession.getMapper(EmployeeInMapper.class);
        EmployeeIn sl = new EmployeeIn();
        sl.setIdcode("33");
        sl.setEmployeeid("3");
        sl.setEmployeenumber("3");
        sl.setPassword("33333");
        ;
        sl.setName("王五");
        eim.insert(sl);
        sqlSession.commit();
        sqlSession.close();
    }

    // 测试删除
    @Test
    public void testDeleteById() throws Exception {

        SqlSession sqlSession = sqlSessionFactory.openSession();
        EmployeeInMapper eim = sqlSession.getMapper(EmployeeInMapper.class);
        eim.deleteByPrimaryKey("3");
        sqlSession.commit();
        sqlSession.close();
    }

    // 测试修改
    @Test
    public void fun2() throws Exception {
        SqlSession sqlSession = sqlSessionFactory.openSession();
        EmployeeInMapper eim = sqlSession.getMapper(EmployeeInMapper.class);
        EmployeeIn selectByPrimaryKey = eim.selectByPrimaryKey("3");
        selectByPrimaryKey.setName("这是修改后的值");
        eim.updateByPrimaryKey(selectByPrimaryKey);
        sqlSession.commit();
        sqlSession.close();
    }

    // 测试通过id查询单个
    @Test
    public void fun3() throws Exception {
        SqlSession sqlSession = sqlSessionFactory.openSession();
        EmployeeInMapper eim = sqlSession.getMapper(EmployeeInMapper.class);
        EmployeeIn selectByPrimaryKey = eim.selectByPrimaryKey("3");
        System.out.println(selectByPrimaryKey);
    }

    // 自定义条件查询 查询名字为张三的
    @Test
    public void testSelectByExample() {
        SqlSession sqlSession = sqlSessionFactory.openSession();
        EmployeeInMapper eim = sqlSession.getMapper(EmployeeInMapper.class);
        EmployeeInExample employeeInExample = new EmployeeInExample();
        // 通过criteria构造查询条件
        EmployeeInExample.Criteria criteria = employeeInExample.createCriteria();
        criteria.andNameEqualTo("张三");
        // 可能返回多条记录
        List<EmployeeIn> list = eim.selectByExample(employeeInExample);
        System.out.println(list);

    }

    // 自定义条件查询 查询名字为张三的且password为44444的
    @Test
    public void testSelectByExample1() {
        SqlSession sqlSession = sqlSessionFactory.openSession();
        EmployeeInMapper eim = sqlSession.getMapper(EmployeeInMapper.class);
        EmployeeInExample employeeInExample = new EmployeeInExample();
        // 通过criteria构造查询条件
        EmployeeInExample.Criteria criteria = employeeInExample.createCriteria();
        criteria.andNameEqualTo("张三");
        criteria.andPasswordEqualTo("44444");
        // 可能返回多条记录
        List<EmployeeIn> list = eim.selectByExample(employeeInExample);
        System.out.println(list);

    }

    // 自定义条件查询 查询所有，只是不封装条件
    @Test
    public void testSelectByExample3() {
        SqlSession sqlSession = sqlSessionFactory.openSession();
        EmployeeInMapper eim = sqlSession.getMapper(EmployeeInMapper.class);
        EmployeeInExample employeeInExample = new EmployeeInExample();
        // 通过criteria构造查询条件
        EmployeeInExample.Criteria criteria = employeeInExample.createCriteria();
        // 可能返回多条记录
        List<EmployeeIn> list = eim.selectByExample(employeeInExample);
        System.out.println(list);

    }
}

 

补充:今天我同学问我如何用Criteria去执行类似于or的语句，例如:select * from user where usercode="lll" or password="lll"

经过网上查阅资料发现是重新再构造一个criteria，并手动注入到example中：

    @Test
    public void test1(){
        UserExample userExample = new UserExample();
        UserExample.Criteria criteria_1 = userExample.createCriteria();
        criteria_1.andUsercodeEqualTo("111");
        UserExample.Criteria criteria_2 = userExample.createCriteria();
        criteria_2.andPasswordEqualTo("111");
        userExample.or(criteria_2);
        List<User> users = userMapper.selectByExample(userExample);
        for(User u:users){
            System.out.println("--------------------SSSSSSSSSSSSSSSSSSSSSSSSS------------"+u);
        }
    }

 

 

查看日志:

16:37:15,550 DEBUG selectByExample:132 - ==>  Preparing: select userID, userCode, userName, password, userSort, remark2 from user WHERE ( userCode = ? ) or( password = ? ) 
16:37:15,622 DEBUG selectByExample:132 - ==> Parameters: 111(String), 111(String)

 

 

另外逆向工程导出的mapper还可以设置排序和distinct

    public void test1(){
        UserExample userExample = new UserExample();
        /*封装查询条件*/
        UserExample.Criteria criteria_1 = userExample.createCriteria();
        criteria_1.andUsercodeEqualTo("111");
        UserExample.Criteria criteria_2 = userExample.createCriteria();
        criteria_2.andPasswordEqualTo("111");
        userExample.or(criteria_2);
        /*封装排序(姓名降序-密码升序)*/
        userExample.setOrderByClause("username desc,password");
        /*是否是distinct*/
        userExample.setDistinct(true);
        List<User> users = userMapper.selectByExample(userExample);
        for(User u:users){
            System.out.println(u);
        }
    }

 

查看日志

16:43:09,575 DEBUG selectByExample:132 - ==>  Preparing: select distinct userID, userCode, userName, password, userSort, remark2 from user WHERE ( userCode = ? ) or( password = ? ) order by username desc,password 
16:43:09,670 DEBUG selectByExample:132 - ==> Parameters: 111(String), 111(String)

 

 

 

 

 

 使用逆向工程修改指定的列；

　　类似于直接修改。

 

 

 

 

 

如果调用:

如果某些列为空它也会指控。类似于先删除然后添加。添加后来新的对象。

 

 

 

 

最后附一个完整的mapper.xml

<?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="cn.xm.exam.mapper.trainContent.TraincontentMapper" >
  <resultMap id="BaseResultMap" type="cn.xm.exam.bean.trainContent.Traincontent" >
    <id column="documentId" property="documentid" jdbcType="INTEGER" />
    <result column="departmentId" property="departmentid" jdbcType="VARCHAR" />
    <result column="documentName" property="documentname" jdbcType="VARCHAR" />
    <result column="trainType" property="traintype" jdbcType="VARCHAR" />
    <result column="departmentName" property="departmentname" jdbcType="VARCHAR" />
    <result column="knowledgeType" property="knowledgetype" jdbcType="VARCHAR" />
    <result column="originalName" property="originalname" jdbcType="VARCHAR" />
    <result column="currentName" property="currentname" jdbcType="VARCHAR" />
    <result column="upTime" property="uptime" jdbcType="TIMESTAMP" />
    <result column="size" property="size" jdbcType="VARCHAR" />
    <result column="employeeName" property="employeename" jdbcType="VARCHAR" />
    <result column="level" property="level" jdbcType="VARCHAR" />
    <result column="description" property="description" jdbcType="VARCHAR" />
    <result column="browseTimes" property="browsetimes" jdbcType="INTEGER" />
  </resultMap>
  <sql id="Example_Where_Clause" >
    <where >
      <foreach collection="oredCriteria" item="criteria" separator="or" >
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Update_By_Example_Where_Clause" >
    <where >
      <foreach collection="example.oredCriteria" item="criteria" separator="or" >
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List" >
    documentId, departmentId, documentName, trainType, departmentName, knowledgeType, 
    originalName, currentName, upTime, size, employeeName, level, description, browseTimes
  </sql>
  <select id="selectByExample" resultMap="BaseResultMap" parameterType="cn.xm.exam.bean.trainContent.TraincontentExample" >
    select
    <if test="distinct" >
      distinct
    </if>
    <include refid="Base_Column_List" />
    from traincontent
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null" >
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
    select 
    <include refid="Base_Column_List" />
    from traincontent
    where documentId = #{documentid,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
    delete from traincontent
    where documentId = #{documentid,jdbcType=INTEGER}
  </delete>
  <delete id="deleteByExample" parameterType="cn.xm.exam.bean.trainContent.TraincontentExample" >
    delete from traincontent
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="cn.xm.exam.bean.trainContent.Traincontent" >
    insert into traincontent (documentId, departmentId, documentName, 
      trainType, departmentName, knowledgeType, 
      originalName, currentName, upTime, 
      size, employeeName, level, 
      description, browseTimes)
    values (#{documentid,jdbcType=INTEGER}, #{departmentid,jdbcType=VARCHAR}, #{documentname,jdbcType=VARCHAR}, 
      #{traintype,jdbcType=VARCHAR}, #{departmentname,jdbcType=VARCHAR}, #{knowledgetype,jdbcType=VARCHAR}, 
      #{originalname,jdbcType=VARCHAR}, #{currentname,jdbcType=VARCHAR}, #{uptime,jdbcType=TIMESTAMP}, 
      #{size,jdbcType=VARCHAR}, #{employeename,jdbcType=VARCHAR}, #{level,jdbcType=VARCHAR}, 
      #{description,jdbcType=VARCHAR}, #{browsetimes,jdbcType=INTEGER})
  </insert>
  <insert id="insertSelective" parameterType="cn.xm.exam.bean.trainContent.Traincontent" >
    insert into traincontent
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="documentid != null" >
        documentId,
      </if>
      <if test="departmentid != null" >
        departmentId,
      </if>
      <if test="documentname != null" >
        documentName,
      </if>
      <if test="traintype != null" >
        trainType,
      </if>
      <if test="departmentname != null" >
        departmentName,
      </if>
      <if test="knowledgetype != null" >
        knowledgeType,
      </if>
      <if test="originalname != null" >
        originalName,
      </if>
      <if test="currentname != null" >
        currentName,
      </if>
      <if test="uptime != null" >
        upTime,
      </if>
      <if test="size != null" >
        size,
      </if>
      <if test="employeename != null" >
        employeeName,
      </if>
      <if test="level != null" >
        level,
      </if>
      <if test="description != null" >
        description,
      </if>
      <if test="browsetimes != null" >
        browseTimes,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="documentid != null" >
        #{documentid,jdbcType=INTEGER},
      </if>
      <if test="departmentid != null" >
        #{departmentid,jdbcType=VARCHAR},
      </if>
      <if test="documentname != null" >
        #{documentname,jdbcType=VARCHAR},
      </if>
      <if test="traintype != null" >
        #{traintype,jdbcType=VARCHAR},
      </if>
      <if test="departmentname != null" >
        #{departmentname,jdbcType=VARCHAR},
      </if>
      <if test="knowledgetype != null" >
        #{knowledgetype,jdbcType=VARCHAR},
      </if>
      <if test="originalname != null" >
        #{originalname,jdbcType=VARCHAR},
      </if>
      <if test="currentname != null" >
        #{currentname,jdbcType=VARCHAR},
      </if>
      <if test="uptime != null" >
        #{uptime,jdbcType=TIMESTAMP},
      </if>
      <if test="size != null" >
        #{size,jdbcType=VARCHAR},
      </if>
      <if test="employeename != null" >
        #{employeename,jdbcType=VARCHAR},
      </if>
      <if test="level != null" >
        #{level,jdbcType=VARCHAR},
      </if>
      <if test="description != null" >
        #{description,jdbcType=VARCHAR},
      </if>
      <if test="browsetimes != null" >
        #{browsetimes,jdbcType=INTEGER},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="cn.xm.exam.bean.trainContent.TraincontentExample" resultType="java.lang.Integer" >
    select count(*) from traincontent
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map" >
    update traincontent
    <set >
      <if test="record.documentid != null" >
        documentId = #{record.documentid,jdbcType=INTEGER},
      </if>
      <if test="record.departmentid != null" >
        departmentId = #{record.departmentid,jdbcType=VARCHAR},
      </if>
      <if test="record.documentname != null" >
        documentName = #{record.documentname,jdbcType=VARCHAR},
      </if>
      <if test="record.traintype != null" >
        trainType = #{record.traintype,jdbcType=VARCHAR},
      </if>
      <if test="record.departmentname != null" >
        departmentName = #{record.departmentname,jdbcType=VARCHAR},
      </if>
      <if test="record.knowledgetype != null" >
        knowledgeType = #{record.knowledgetype,jdbcType=VARCHAR},
      </if>
      <if test="record.originalname != null" >
        originalName = #{record.originalname,jdbcType=VARCHAR},
      </if>
      <if test="record.currentname != null" >
        currentName = #{record.currentname,jdbcType=VARCHAR},
      </if>
      <if test="record.uptime != null" >
        upTime = #{record.uptime,jdbcType=TIMESTAMP},
      </if>
      <if test="record.size != null" >
        size = #{record.size,jdbcType=VARCHAR},
      </if>
      <if test="record.employeename != null" >
        employeeName = #{record.employeename,jdbcType=VARCHAR},
      </if>
      <if test="record.level != null" >
        level = #{record.level,jdbcType=VARCHAR},
      </if>
      <if test="record.description != null" >
        description = #{record.description,jdbcType=VARCHAR},
      </if>
      <if test="record.browsetimes != null" >
        browseTimes = #{record.browsetimes,jdbcType=INTEGER},
      </if>
    </set>
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map" >
    update traincontent
    set documentId = #{record.documentid,jdbcType=INTEGER},
      departmentId = #{record.departmentid,jdbcType=VARCHAR},
      documentName = #{record.documentname,jdbcType=VARCHAR},
      trainType = #{record.traintype,jdbcType=VARCHAR},
      departmentName = #{record.departmentname,jdbcType=VARCHAR},
      knowledgeType = #{record.knowledgetype,jdbcType=VARCHAR},
      originalName = #{record.originalname,jdbcType=VARCHAR},
      currentName = #{record.currentname,jdbcType=VARCHAR},
      upTime = #{record.uptime,jdbcType=TIMESTAMP},
      size = #{record.size,jdbcType=VARCHAR},
      employeeName = #{record.employeename,jdbcType=VARCHAR},
      level = #{record.level,jdbcType=VARCHAR},
      description = #{record.description,jdbcType=VARCHAR},
      browseTimes = #{record.browsetimes,jdbcType=INTEGER}
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByPrimaryKeySelective" parameterType="cn.xm.exam.bean.trainContent.Traincontent" >
    update traincontent
    <set >
      <if test="departmentid != null" >
        departmentId = #{departmentid,jdbcType=VARCHAR},
      </if>
      <if test="documentname != null" >
        documentName = #{documentname,jdbcType=VARCHAR},
      </if>
      <if test="traintype != null" >
        trainType = #{traintype,jdbcType=VARCHAR},
      </if>
      <if test="departmentname != null" >
        departmentName = #{departmentname,jdbcType=VARCHAR},
      </if>
      <if test="knowledgetype != null" >
        knowledgeType = #{knowledgetype,jdbcType=VARCHAR},
      </if>
      <if test="originalname != null" >
        originalName = #{originalname,jdbcType=VARCHAR},
      </if>
      <if test="currentname != null" >
        currentName = #{currentname,jdbcType=VARCHAR},
      </if>
      <if test="uptime != null" >
        upTime = #{uptime,jdbcType=TIMESTAMP},
      </if>
      <if test="size != null" >
        size = #{size,jdbcType=VARCHAR},
      </if>
      <if test="employeename != null" >
        employeeName = #{employeename,jdbcType=VARCHAR},
      </if>
      <if test="level != null" >
        level = #{level,jdbcType=VARCHAR},
      </if>
      <if test="description != null" >
        description = #{description,jdbcType=VARCHAR},
      </if>
      <if test="browsetimes != null" >
        browseTimes = #{browsetimes,jdbcType=INTEGER},
      </if>
    </set>
    where documentId = #{documentid,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="cn.xm.exam.bean.trainContent.Traincontent" >
    update traincontent
    set departmentId = #{departmentid,jdbcType=VARCHAR},
      documentName = #{documentname,jdbcType=VARCHAR},
      trainType = #{traintype,jdbcType=VARCHAR},
      departmentName = #{departmentname,jdbcType=VARCHAR},
      knowledgeType = #{knowledgetype,jdbcType=VARCHAR},
      originalName = #{originalname,jdbcType=VARCHAR},
      currentName = #{currentname,jdbcType=VARCHAR},
      upTime = #{uptime,jdbcType=TIMESTAMP},
      size = #{size,jdbcType=VARCHAR},
      employeeName = #{employeename,jdbcType=VARCHAR},
      level = #{level,jdbcType=VARCHAR},
      description = #{description,jdbcType=VARCHAR},
      browseTimes = #{browsetimes,jdbcType=INTEGER}
    where documentId = #{documentid,jdbcType=INTEGER}
  </update>
</mapper>

 

 

附一个测试工程的下载地址:   http://qiaoliqiang.cn/fileDown/MybatisInverse.zip