Mybatis Generator

Use zh_CN

Code

You need mybatis-generator-core.jar and mysql-connector-java.jar.

Then, use schema.sql to create table in your mysql.

use mvn mybatis-generator:generate to run project.

You may find directory not exists error, solve it.

pom.xml

  [xml]
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.ryo</groupId>
  <artifactId>mybaits</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>mybaits Maven Webapp</name>
  <url>http://maven.apache.org</url>


  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.mybatis.generator</groupId>
      <artifactId>mybatis-generator-core</artifactId>
      <version>1.3.2</version>
    </dependency>

    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.30</version>
    </dependency>

  </dependencies>

  <build>
      <finalName>mybaits</finalName>
      <plugins>
          <plugin>
              <groupId>org.mybatis.generator</groupId>
              <artifactId>mybatis-generator-maven-plugin</artifactId>
              <version>1.3.0</version>

              <dependencies>
                  <dependency>
                      <groupId>org.mybatis.generator</groupId>
                      <artifactId>mybatis-generator-core</artifactId>
                      <version>1.3.2</version>
                  </dependency>

                  <dependency>
                      <groupId>mysql</groupId>
                      <artifactId>mysql-connector-java</artifactId>
                      <version>5.1.30</version>
                  </dependency>
              </dependencies>
          </plugin>
      </plugins>
  </build>
</project>

schema.sql

  [sql]
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CREATE TABLE `test`.`teacher` (
`id` bigint NOT NULL DEFAULT 0 COMMENT '主键id',
`name` varchar(40) NOT NULL DEFAULT '' COMMENT '名称',
`age` smallint NOT NULL DEFAULT 0 COMMENT '年龄',
PRIMARY KEY (`id`)
) COMMENT='教师表';

generatorConfig.xml

  [xml]
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<?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="MySQLTables" targetRuntime="MyBatis3">
        <!--关闭注释 -->
        <commentGenerator>
            <property name="suppressDate" value="true"/>
        </commentGenerator>

        <!--数据库连接信息 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/test"
                        userId="root"
                        password="123456">
        </jdbcConnection>

        <!--生成的model 包路径 -->
        <javaModelGenerator targetPackage="com.ryo.gen.model" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>

        <!--生成xml mapper文件 路径 -->
        <sqlMapGenerator targetPackage="com.ryo.gen.xml" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>

        <!-- 生成的Dao接口 的包路径 -->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.ryo.gen.dao" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>

        <!--对应数据库表名 -->
        <table tableName="teacher">

        </table>
    </context>
</generatorConfiguration>

生成 example

mbg 可以生成对象的 example，这样写 Creteria 比较方便，但是缺点是生成的类变多。

  [xml]
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<table tableName="表名称" domainObjectName="实体对象名称"
    enableCountByExample="true" enableUpdateByExample="true"
    enableDeleteByExample="true" enableSelectByExample="true"
    selectByExampleQueryId="true">
</table>

Bugs

AbstractMethodError

When use the version of mybatis-generator-maven-plugin is 1.3.5, meet this:

  [plaintext]
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Failed to execute goal org.mybatis.generator:mybatis-generator-maven-plugin:1.3.5:generate (default-cli) on project app-demo-dal: Execution default-cli of goal org.mybatis.generator:mybatis-generator-maven-plugin:1.3.5:generate failed: An API incompatibility was encountered while executing org.mybatis.generator:mybatis-generator-maven-plugin:1.3.5:generate: java.lang.AbstractMethodError: tk.mybatis.mapper.generator.MapperCommentGenerator.addModelClassComment(Lorg/mybatis/generator/api/dom/java/TopLevelClass;Lorg/mybatis/generator/api/IntrospectedTable;)V

Change the version into 1.3.2 will be okay.

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