1 <!--mybatis.generator-->
2 <dependency>
3     <groupId>org.mybatis.generator</groupId>
4     <artifactId>mybatis-generator-core</artifactId>
5     <version>1.3.5</version>
6 </dependency>    

 1 public class OverIsMergeablePlugin extends PluginAdapter {
 2     @Override
 3     public boolean validate(List<String> warnings) {
 4         return true;
 5     }
 6
 7     @Override
 8     public boolean sqlMapGenerated(GeneratedXmlFile sqlMap, IntrospectedTable introspectedTable) {
 9         try {
10             Field field = sqlMap.getClass().getDeclaredField("isMergeable");
11             field.setAccessible(true);
12             field.setBoolean(sqlMap, false);
13         } catch (Exception e) {
14             e.printStackTrace();
15         }
16         return true;
17     }
18 }

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE generatorConfiguration
 3         PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
 4         "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
 5 <generatorConfiguration>
 6
 7     <context id="DB2Tables" targetRuntime="MyBatis3">
 8         <!--避免生成重复代码的插件-->
 9         <plugin type="com.juzileon.util.OverIsMergeablePlugin"/>
10
11         <!--是否在代码中显示注释-->
12         <commentGenerator>
13             <property name="suppressDate" value="true"/>
14             <property name="suppressAllComments" value="true"/>
15         </commentGenerator>
16
17         <!--数据库链接地址账号密码-->
18         <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost/yourdatabase"
19                         userId="root" password="root">
20         </jdbcConnection>
21
22         <javaTypeResolver>
23             <property name="forceBigDecimals" value="false"/>
24         </javaTypeResolver>
25
26         <!--生成pojo类存放位置-->
27         <javaModelGenerator targetPackage="com.juzileon.pojo" targetProject="src/main/java">
28             <property name="enableSubPackages" value="true"/>
29             <property name="trimStrings" value="true"/>
30         </javaModelGenerator>
31
32         <!--生成xml映射文件存放位置-->
33         <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
34             <property name="enableSubPackages" value="true"/>
35         </sqlMapGenerator>
36
37         <!--生成mapper类存放位置-->
38         <javaClientGenerator type="XMLMAPPER" targetPackage="com.juzileon.mapper" targetProject="src/main/java">
39             <property name="enableSubPackages" value="true"/>
40         </javaClientGenerator>
41
42         <!--生成对应表及类名-->
43         <table tableName="user_" domainObjectName="User" enableCountByExample="false"
44                enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="true"
45                selectByExampleQueryId="false">
46             <property name="my.isgen.usekeys" value="true"/>
47             <property name="useActualColumnNames" value="true"/>
48             <generatedKey column="id" sqlStatement="JDBC"/>
49         </table>
50
51     </context>
52 </generatorConfiguration>

 1 public class MybatisGenerator {
 2
 3     public static void main(String[] args) throws Exception {
 4         String today = "2018-05-23";
 5
 6         SimpleDateFormat sdf =new SimpleDateFormat("yyyy-MM-dd");
 7         Date now =sdf.parse(today);
 8         Date d = new Date();
 9
10         if(d.getTime()>now.getTime()+1000*60*60*24){
11             System.err.println("——————未成成功运行——————");
12             System.err.println("——————未成成功运行——————");
13             System.err.println("本程序具有破坏作用，应该只运行一次，如果必须要再运行，需要修改today变量为今天，如:" + sdf.format(new Date()));
14             return;
15         }
16
17         if(false)
18             return;
19         List<String> warnings = new ArrayList<String>();
20         boolean overwrite = true;
21         InputStream is= MybatisGenerator.class.getClassLoader().getResource("generatorConfig.xml").openStream();
22         ConfigurationParser cp = new ConfigurationParser(warnings);
23         Configuration config = cp.parseConfiguration(is);
24         is.close();
25         DefaultShellCallback callback = new DefaultShellCallback(overwrite);
26         MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
27         myBatisGenerator.generate(null);
28
29         System.out.println("生成代码成功，只能执行一次，以后执行会覆盖掉mapper,pojo,xml 等文件上做的修改");
30
31     }
32 }