eclipse中利用Maven逆向工程生成PO类以及mapper（mybatis）

在pom.xml的project>build里面添加如下代码，让maven环境支持mybatis-generator组件

1.  
   <pluginManagement>
2.  
   <plugins>
3.  
   <plugin>
4.  
   <groupId>org.mybatis.generator</groupId>
5.  
   <artifactId>mybatis-generator-maven-plugin</artifactId>
6.  
   <version>1.3.2</version>
7.  
   <configuration>
8.  
   <configurationFile>src/main/resources/generator.xml</configurationFile>
9.  
   <verbose>true</verbose>
10.  
    <overwrite>true</overwrite>
11.  
    </configuration>
12.  
    <executions>
13.  
    <execution>
14.  
    <id>Generate MyBatis Artifacts</id>
15.  
    <goals>
16.  
    <goal>generate</goal>
17.  
    </goals>
18.  
    </execution>
19.  
    </executions>
20.  
    <dependencies>
21.  
    <dependency>
22.  
    <groupId>org.mybatis.generator</groupId>
23.  
    <artifactId>mybatis-generator-core</artifactId>
24.  
    <version>1.3.2</version>
25.  
    </dependency>
26.  
    </dependencies>
27.  
    </plugin>
28.  
    <plugin>
29.  
    <groupId>org.apache.maven.plugins</groupId>
30.  
    <artifactId>maven-surefire-plugin</artifactId>
31.  
    <version>2.19.1</version>
32.  
    <configuration>
33.  
    <skipTests>true</skipTests>
34.  
    </configuration>
35.  
    </plugin>
36.  
     
37.  
    <plugin>
38.  
    <groupId>org.apache.maven.plugins</groupId>
39.  
    <artifactId>maven-resources-plugin</artifactId>
40.  
    <version>3.0.1</version>
41.  
    <configuration>
42.  
    <encoding>UTF-8</encoding>
43.  
    </configuration>
44.  
    </plugin>
45.  
    </plugins>
46.  
    </pluginManagement>

注：如果在dependencies中已经引入mysql-connector-java则不需加入以下dependency,反之加入

1.  
   <dependency>
2.  
   <groupId>mysql</groupId>
3.  
   <artifactId>mysql-connector-java</artifactId>
4.  
   <version>5.1.35</version>
5.  
   <scope>runtime</scope>
6.  
   </dependency>

2、generator.xml配置文件

需逆向的表：

逆向代码生成目录结构：

对应配置：

1.  
   <?xml version="1.0" encoding="UTF-8"?>
2.  
   <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
3.  
   <generatorConfiguration>
4.  
   <!-- 数据库驱动包位置 -->
5.  
   <classPathEntry
6.  
   location="E:\apache-maven-3.3.9\repo\mysql\mysql-connector-java\5.1.18\mysql-connector-java-5.1.18.jar" />
7.  
   <context id="Tables" targetRuntime="MyBatis3">
8.  
   <commentGenerator>
9.  
   <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
10.  
    <property name="suppressAllComments" value="true" />
11.  
    </commentGenerator>
12.  
    <!-- 数据库链接URL、用户名、密码 -->
13.  
    <jdbcConnection driverClass="com.mysql.jdbc.Driver"
14.  
    connectionURL="jdbc:mysql://192.168.100.52:3306/dev_test" userId="数据库用户名"
15.  
    password="数据库密码">
16.  
    <!--<jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver" connectionURL="jdbc:oracle:thin:@localhost:1521:orcl"
17.  
    userId="msa" password="msa"> -->
18.  
    </jdbcConnection>
19.  
    <javaTypeResolver>
20.  
    <!-- 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 -->
21.  
    <property name="forceBigDecimals" value="true" />
22.  
    </javaTypeResolver>
23.  
    <!-- 生成实体类的包名和位置，这里配置将生成的实体类放在com.loan.test.entity这个包下 -->
24.  
    <javaModelGenerator targetPackage="com.loan.test.entity"
25.  
    targetProject=".\src\main\java\">
26.  
    <!-- enableSubPackages:是否让schema作为包的后缀 -->
27.  
    <property name="enableSubPackages" value="true" />
28.  
    <!-- 从数据库返回的值被清理前后的空格 -->
29.  
    <property name="trimStrings" value="true" />
30.  
    </javaModelGenerator>
31.  
    <!-- 生成的SQL映射文件包名和位置，这里配置将生成的SQL映射文件放在com.loan.test.dao.xml这个包下 -->
32.  
    <sqlMapGenerator targetPackage="com.loan.test.dao.xml"
33.  
    targetProject=".\src\main\java\">
34.  
    <!-- enableSubPackages:是否让schema作为包的后缀 -->
35.  
    <property name="enableSubPackages" value="true" />
36.  
    </sqlMapGenerator>
37.  
    <!-- 生成DAO的包名和位置，这里配置将生成的dao类放在com.loan.test.dao.mapper这个包下 -->
38.  
    <javaClientGenerator type="XMLMAPPER"
39.  
    targetPackage="com.loan.test.dao.mapper" targetProject=".\src\main\java\">
40.  
    <!-- enableSubPackages:是否让schema作为包的后缀 -->
41.  
    <property name="enableSubPackages" value="true" />
42.  
    </javaClientGenerator>
43.  
    <!-- 要生成那些表(更改tableName和domainObjectName就可以) -->
44.  
    <table tableName="test" domainObjectName="Test"
45.  
    enableCountByExample="false" enableUpdateByExample="false"
46.  
    enableDeleteByExample="false" enableSelectByExample="false"
47.  
    selectByExampleQueryId="false" />
48.  
    </context>
49.  
    </generatorConfiguration>

3、运用maven指令生成逆向工程

项目右键->run as->maven build...,Goals:中输入mybatis-generator:generate

.

4、刷新项目，结果

1）Test.java

1.  
   package com.loan.test.entity;
2.  
    
3.  
   import java.math.BigDecimal;
4.  
    
5.  
   public class Test {
6.  
   private Integer id;
7.  
    
8.  
   private String userName;
9.  
    
10.  
    private Integer cardId;
11.  
     
12.  
    private BigDecimal moneyAmount;
13.  
     
14.  
    public Integer getId() {
15.  
    return id;
16.  
    }
17.  
     
18.  
    public void setId(Integer id) {
19.  
    this.id = id;
20.  
    }
21.  
     
22.  
    public String getUserName() {
23.  
    return userName;
24.  
    }
25.  
     
26.  
    public void setUserName(String userName) {
27.  
    this.userName = userName == null ? null : userName.trim();
28.  
    }
29.  
     
30.  
    public Integer getCardId() {
31.  
    return cardId;
32.  
    }
33.  
     
34.  
    public void setCardId(Integer cardId) {
35.  
    this.cardId = cardId;
36.  
    }
37.  
     
38.  
    public BigDecimal getMoneyAmount() {
39.  
    return moneyAmount;
40.  
    }
41.  
     
42.  
    public void setMoneyAmount(BigDecimal moneyAmount) {
43.  
    this.moneyAmount = moneyAmount;
44.  
    }
45.  
    }

2）TestMapper.java

1.  
   package com.loan.test.dao.mapper;
2.  
    
3.  
   import com.loan.test.entity.Test;
4.  
    
5.  
   public interface TestMapper {
6.  
   int deleteByPrimaryKey(Integer id);
7.  
    
8.  
   int insert(Test record);
9.  
    
10.  
    int insertSelective(Test record);
11.  
     
12.  
    Test selectByPrimaryKey(Integer id);
13.  
     
14.  
    int updateByPrimaryKeySelective(Test record);
15.  
     
16.  
    int updateByPrimaryKey(Test record);
17.  
    }

3）TestMapper.xml

1.  
   <?xml version="1.0" encoding="UTF-8"?>
2.  
   <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
3.  
   <mapper namespace="com.loan.test.dao.mapper.TestMapper">
4.  
   <resultMap id="BaseResultMap" type="com.loan.test.entity.Test">
5.  
   <id column="id" jdbcType="INTEGER" property="id" />
6.  
   <result column="user_name" jdbcType="VARCHAR" property="userName" />
7.  
   <result column="card_id" jdbcType="INTEGER" property="cardId" />
8.  
   <result column="money_amount" jdbcType="DECIMAL" property="moneyAmount" />
9.  
   </resultMap>
10.  
    <sql id="Base_Column_List">
11.  
    id, user_name, card_id, money_amount
12.  
    </sql>
13.  
    <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
14.  
    select
15.  
    <include refid="Base_Column_List" />
16.  
    from test
17.  
    where id = #{id,jdbcType=INTEGER}
18.  
    </select>
19.  
    <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
20.  
    delete from test
21.  
    where id = #{id,jdbcType=INTEGER}
22.  
    </delete>
23.  
    <insert id="insert" parameterType="com.loan.test.entity.Test">
24.  
    insert into test (id, user_name, card_id,
25.  
    money_amount)
26.  
    values (#{id,jdbcType=INTEGER}, #{userName,jdbcType=VARCHAR}, #{cardId,jdbcType=INTEGER},
27.  
    #{moneyAmount,jdbcType=DECIMAL})
28.  
    </insert>
29.  
    <insert id="insertSelective" parameterType="com.loan.test.entity.Test">
30.  
    insert into test
31.  
    <trim prefix="(" suffix=")" suffixOverrides=",">
32.  
    <if test="id != null">
33.  
    id,
34.  
    </if>
35.  
    <if test="userName != null">
36.  
    user_name,
37.  
    </if>
38.  
    <if test="cardId != null">
39.  
    card_id,
40.  
    </if>
41.  
    <if test="moneyAmount != null">
42.  
    money_amount,
43.  
    </if>
44.  
    </trim>
45.  
    <trim prefix="values (" suffix=")" suffixOverrides=",">
46.  
    <if test="id != null">
47.  
    #{id,jdbcType=INTEGER},
48.  
    </if>
49.  
    <if test="userName != null">
50.  
    #{userName,jdbcType=VARCHAR},
51.  
    </if>
52.  
    <if test="cardId != null">
53.  
    #{cardId,jdbcType=INTEGER},
54.  
    </if>
55.  
    <if test="moneyAmount != null">
56.  
    #{moneyAmount,jdbcType=DECIMAL},
57.  
    </if>
58.  
    </trim>
59.  
    </insert>
60.  
    <update id="updateByPrimaryKeySelective" parameterType="com.loan.test.entity.Test">
61.  
    update test
62.  
    <set>
63.  
    <if test="userName != null">
64.  
    user_name = #{userName,jdbcType=VARCHAR},
65.  
    </if>
66.  
    <if test="cardId != null">
67.  
    card_id = #{cardId,jdbcType=INTEGER},
68.  
    </if>
69.  
    <if test="moneyAmount != null">
70.  
    money_amount = #{moneyAmount,jdbcType=DECIMAL},
71.  
    </if>
72.  
    </set>
73.  
    where id = #{id,jdbcType=INTEGER}
74.  
    </update>
75.  
    <update id="updateByPrimaryKey" parameterType="com.loan.test.entity.Test">
76.  
    update test
77.  
    set user_name = #{userName,jdbcType=VARCHAR},
78.  
    card_id = #{cardId,jdbcType=INTEGER},
79.  
    money_amount = #{moneyAmount,jdbcType=DECIMAL}
80.  
    where id = #{id,jdbcType=INTEGER}
81.  
    </update>
82.  
    <resultMap id="BaseResultMap" type="com.loan.test.entity.Test">
83.  
    <id column="id" jdbcType="INTEGER" property="id" />
84.  
    <result column="user_name" jdbcType="VARCHAR" property="userName" />
85.  
    <result column="card_id" jdbcType="INTEGER" property="cardId" />
86.  
    <result column="money_amount" jdbcType="DECIMAL" property="moneyAmount" />
87.  
    </resultMap>
88.  
    <sql id="Base_Column_List">
89.  
    id, user_name, card_id, money_amount
90.  
    </sql>
91.  
    <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
92.  
    select
93.  
    <include refid="Base_Column_List" />
94.  
    from test
95.  
    where id = #{id,jdbcType=INTEGER}
96.  
    </select>
97.  
    <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
98.  
    delete from test
99.  
    where id = #{id,jdbcType=INTEGER}
100.  
     </delete>
101.  
     <insert id="insert" parameterType="com.loan.test.entity.Test">
102.  
     insert into test (id, user_name, card_id,
103.  
     money_amount)
104.  
     values (#{id,jdbcType=INTEGER}, #{userName,jdbcType=VARCHAR}, #{cardId,jdbcType=INTEGER},
105.  
     #{moneyAmount,jdbcType=DECIMAL})
106.  
     </insert>
107.  
     <insert id="insertSelective" parameterType="com.loan.test.entity.Test">
108.  
     insert into test
109.  
     <trim prefix="(" suffix=")" suffixOverrides=",">
110.  
     <if test="id != null">
111.  
     id,
112.  
     </if>
113.  
     <if test="userName != null">
114.  
     user_name,
115.  
     </if>
116.  
     <if test="cardId != null">
117.  
     card_id,
118.  
     </if>
119.  
     <if test="moneyAmount != null">
120.  
     money_amount,
121.  
     </if>
122.  
     </trim>
123.  
     <trim prefix="values (" suffix=")" suffixOverrides=",">
124.  
     <if test="id != null">
125.  
     #{id,jdbcType=INTEGER},
126.  
     </if>
127.  
     <if test="userName != null">
128.  
     #{userName,jdbcType=VARCHAR},
129.  
     </if>
130.  
     <if test="cardId != null">
131.  
     #{cardId,jdbcType=INTEGER},
132.  
     </if>
133.  
     <if test="moneyAmount != null">
134.  
     #{moneyAmount,jdbcType=DECIMAL},
135.  
     </if>
136.  
     </trim>
137.  
     </insert>
138.  
     <update id="updateByPrimaryKeySelective" parameterType="com.loan.test.entity.Test">
139.  
     update test
140.  
     <set>
141.  
     <if test="userName != null">
142.  
     user_name = #{userName,jdbcType=VARCHAR},
143.  
     </if>
144.  
     <if test="cardId != null">
145.  
     card_id = #{cardId,jdbcType=INTEGER},
146.  
     </if>
147.  
     <if test="moneyAmount != null">
148.  
     money_amount = #{moneyAmount,jdbcType=DECIMAL},
149.  
     </if>
150.  
     </set>
151.  
     where id = #{id,jdbcType=INTEGER}
152.  
     </update>
153.  
     <update id="updateByPrimaryKey" parameterType="com.loan.test.entity.Test">
154.  
     update test
155.  
     set user_name = #{userName,jdbcType=VARCHAR},
156.  
     card_id = #{cardId,jdbcType=INTEGER},
157.  
     money_amount = #{moneyAmount,jdbcType=DECIMAL}
158.  
     where id = #{id,jdbcType=INTEGER}
159.  
     </update>
160.  
     </mapper>

配置完成！！