MyBatis-使用mybatis-generator-core.jar生成POJO和Mapper文件

Demo:

http://pan.baidu.com/s/1pLeyVv9

 

1.pom.xml

 1 <dependencies>  
 2     <!-- 用于生成日志 -->  
 3 <dependency>  
 4     <groupId>log4j</groupId>  
 5     <artifactId>log4j</artifactId>  
 6     <version>1.2.17</version>  
 7 </dependency>  
 8     <!-- 用于连接oracle数据库 -->  
 9 <dependency>  
10     <groupId>ojdbc</groupId>  
11     <artifactId>ojdbc</artifactId>  
12     <version>14-10gR3</version>  
13 </dependency>  
14 <!-- 用于连接mysql数据库 -->  
15 <dependency>  
16     <groupId>mysql</groupId>  
17     <artifactId>mysql-connector-java</artifactId>  
18     <version>5.1.38</version>  
19 </dependency>  
20     <dependency>  
21     <groupId>org.mybatis</groupId>  
22     <artifactId>mybatis</artifactId>  
23     <version>3.3.0</version>  
24 </dependency>  
25 <!-- mybatis-generator-core核心jar包 -->  
26 <dependency>  
27     <groupId>org.mybatis.generator</groupId>  
28     <artifactId>mybatis-generator-core</artifactId>  
29     <version>1.3.2</version>  
30 </dependency>  
31   </dependencies>  

2.mybatis-generator.xml(根目录下新建资源文件夹resources,放里面就行,以后需要读取)

 

这是用于生成pojo和mapper的配置文件,是独立的,这里面定义了各种映射规则,如生成的位置,生成哪张表甚至可以指定字段等等,具体如下:

 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   
 6 <generatorConfiguration>  
 7     <context id="caigouTables" 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         <!--数据库连接的信息:驱动类、连接地址、用户名、密码 -->  
13         <!-- <jdbcConnection driverClass="com.mysql.jdbc.Driver"  
14             connectionURL="jdbc:mysql://localhost:3306/mybatis" userId="root"  
15             password="mysql">  
16         </jdbcConnection> -->  
17         <jdbcConnection   
18             driverClass="oracle.jdbc.OracleDriver"  
19             connectionURL="jdbc:oracle:thin:@192.168.44.128:1521:orcl"   
20             userId="scott"  
21             password="orcl">  
22         </jdbcConnection>  
23   
24         <!-- 默认false,把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer true,把JDBC DECIMAL 和   
25             NUMERIC 类型解析为java.math.BigDecimal -->  
26         <javaTypeResolver>  
27             <property name="forceBigDecimals" value="false" />  
28         </javaTypeResolver>  
29   
30         <!-- targetProject:生成PO类的位置 -->  
31         <javaModelGenerator targetPackage="com.yan.pojo"  
32             targetProject=".\src\main\java">  
33             <!-- enableSubPackages:是否让schema作为包的后缀 -->  
34             <property name="enableSubPackages" value="false" />  
35             <!-- 从数据库返回的值被清理前后的空格 -->  
36             <property name="trimStrings" value="true" />  
37         </javaModelGenerator>  
38         <!-- targetPackage:mapper映射文件生成的位置 -->  
39         <sqlMapGenerator targetPackage="com.yan.dao.mapper"   
40             targetProject=".\src\main\java">  
41             <property name="enableSubPackages" value="false" />  
42         </sqlMapGenerator>  
43         <!-- targetPackage:mapper接口的生成位置 -->  
44         <javaClientGenerator type="XMLMAPPER"  
45             targetPackage="com.yan.dao.mapper"   
46             targetProject=".\src\main\java">  
47             <property name="enableSubPackages" value="false" />  
48         </javaClientGenerator>  
49           
50         <!-- 指定表  emp  
51         这里不指定schema,逆向工程会查询sysuser都有哪些schema,对每个schema生成对象-->  
52         <table schema="scott" tableName="emp">  
53             <!-- <columnOverride column=""></columnOverride> -->  
54         </table>  
55         <table schema="scott" tableName="dept"/>  
56   
57     </context>  
58 </generatorConfiguration>  

3.创建执行类GeneratorExecution,用来读取上述配置文件,并且根据配置文件执行(直接Run as Java Application)就大功告成了,哦对了,记得刷新一下项目,不然看不到哦^_^

 1 public class GeneratorExecution {  
 2     public static void generator(){  
 3           
 4         List<String> warnings=new ArrayList<String>();  
 5         try {  
 6 //      导入配置表mybatis-generator.xml  
 7         File configFile=new File("resources/mybatis-generator.xml");  
 8 //      解析  
 9         ConfigurationParser cp=new ConfigurationParser(warnings);  
10         Configuration config=cp.parseConfiguration(configFile);  
11 //      是否覆盖  
12         DefaultShellCallback dsc=new DefaultShellCallback(true);  
13         MyBatisGenerator mg=new MyBatisGenerator(config, dsc, warnings);  
14         mg.generate(null);  
15         } catch (Exception e) {  
16             e.printStackTrace();  
17         }  
18           
19     }  
20   
21     /**  
22      * @param args  
23      */  
24     public static void main(String[] args) {  
25         GeneratorExecution.generator();  
26         System.out.println("done!");  
27     }  
28   
29 }  

 

posted @ 2017-07-03 21:55  舒山  阅读(2407)  评论(0编辑  收藏  举报