Mybatis中的逆向工程

1. 准备工作

数据库驱动jar包, mybatis的jar包, 日志记录jar包

Mybatis中的逆向工程

2. 配置文件

　　1. 在src的同级目录下配置generatorConfig.xml文件

<?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 />
       </table> -->
   </context>
</generatorConfiguration>

　　2.配置在src目录下配log4j.properties配置文件
log4j.rootLogger=DEBUG, Console
#Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
log4j.logger.java.sql.ResultSet=INFO
log4j.logger.org.apache=INFO
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG

3. java代码

import java.io.File;
import java.io.IOException;
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.exception.XMLParserException;
import org.mybatis.generator.internal.DefaultShellCallback;

public class GeneratorSqlmap {

   public void generator() throws Exception{

       List<String> warnings = new ArrayList<String>();
       boolean overwrite = true;
       //指定逆向工程配置文件
       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main方法即逆向生成数据库中对应表格的实体类和Mapper文件