Mybatis 自动生成代码

准备条件：

将下面的文件放入同一目录下

操作步骤：

1/ 在 generatorConfig.xml 中配置相关的参数，与需要被自动生成的表
也可以 执行项目中的MybatisConfigAutoGen.java 将得到的结果复制过来 替换当前文档的内容

2/ 打开cmd 窗口，进入当前文件夹下，执行命令：
java -jar mybatis-generator-core-1.3.2.jar -configfile generatorConfig.xml -overwrite

3/ 将src 中的文件复制到 项目对应的目录下即可根据实际来修改

附：

1/  generatorConfig.xml  的内容为：(下面的配置文件是对应Oracle数据库）

<?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>
    <classPathEntry  location="ojdbc7.jar"/> 
    <context id="DB2Tables"  targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="true"/>
            <property name="suppressAllComments" value="true"/> 
        </commentGenerator>
        <jdbcConnection driverClass="oracle.jdbc.OracleDriver" connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:ORCL" userId="panie" password="panie123"> 
        </jdbcConnection>
       <javaTypeResolver>   
            <property name="forceBigDecimals" value="false"/> 
        </javaTypeResolver>
        <javaModelGenerator targetPackage="com.panie.modules.configure.entity" targetProject="src">  
            <property name="enableSubPackages" value="true"/>  
            <property name="trimStrings" value="true"/>
        </javaModelGenerator> 
        <sqlMapGenerator targetPackage="mappings.com.panie.modules.configure" targetProject="src">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.panie.modules.configure.dao" targetProject="src"> 
            <property name="enableSubPackages" value="true"/> 
        </javaClientGenerator>  
<table tableName="BPMP_VERSION" domainObjectName="BpmpVersion" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>

    </context>
</generatorConfiguration>

2/  使用Java 代码 遍历 ORACLE ，生成可用的配置

package com.panie.common.utils;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class MybatisConfigAutoGen
{
    
    public static String jdbcDriver = "oracle.jdbc.OracleDriver";
    public static String jdbcUrl = "jdbc:oracle:thin:@127.0.0.1:1521:ORCL";
    public static String jdbcUser = "panie";
    public static String jdbcPassword = "panie123";
    public static String newline = "
";
    public static String tableKey = "BPMP_VERSION";
    
    public static String driverJar = "ojdbc7.jar";//所使用驱动包
    
    public static String entityPkg = "com.panie.modules.configure.entity";
    public static String mappingPkg = "mappings.com.panie.modules.configure";
    public static String daoPkg = "com.panie.modules.configure.dao";
    
    public static String genConfig()
    {
        StringBuilder sb = new StringBuilder();
        sb.append("<?xml version="1.0" encoding="UTF-8"?>").append(newline);
        sb.append("<!DOCTYPE generatorConfiguration  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" ").append(newline);
        sb.append(""http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> ").append(newline);  
        sb.append("<generatorConfiguration>").append(newline);      
        sb.append("    <classPathEntry  location="").append(driverJar).append(""/> ").append(newline);    
        sb.append("    <context id="DB2Tables"  targetRuntime="MyBatis3">").append(newline);      
        sb.append("        <commentGenerator>").append(newline);       
        sb.append("            <property name="suppressDate" value="true"/>").append(newline); 
        sb.append("            <property name="suppressAllComments" value="true"/> ").append(newline);      
        sb.append("        </commentGenerator>").append(newline);      
        sb.append("        <jdbcConnection driverClass="").append(jdbcDriver).append("" connectionURL="").append(jdbcUrl).append("" userId="").append(jdbcUser).append("" password="").append(jdbcPassword).append(""> ").append(newline);      
        sb.append("        </jdbcConnection>").append(newline);       
        sb.append("       <javaTypeResolver>   ").append(newline);    
        sb.append("            <property name="forceBigDecimals" value="false"/> ").append(newline);      
        sb.append("        </javaTypeResolver>").append(newline);        
        sb.append("        <javaModelGenerator targetPackage="").append(entityPkg).append("" targetProject="src">  ").append(newline);   
        sb.append("            <property name="enableSubPackages" value="true"/>  ").append(newline);   
        sb.append("            <property name="trimStrings" value="true"/>").append(newline);     
        sb.append("        </javaModelGenerator> ").append(newline); 
        sb.append("        <sqlMapGenerator targetPackage="").append(mappingPkg).append("" targetProject="src">").append(newline);     
        sb.append("            <property name="enableSubPackages" value="true"/>").append(newline);     
        sb.append("        </sqlMapGenerator>").append(newline);
        sb.append("        <javaClientGenerator type="XMLMAPPER" targetPackage="").append(daoPkg).append("" targetProject="src"> ").append(newline);    
        sb.append("            <property name="enableSubPackages" value="true"/> ").append(newline);    
        sb.append("        </javaClientGenerator>  ").append(newline);   
        sb.append(genDbTable()).append(newline); 
        sb.append("    </context>").append(newline); 
  
        sb.append("</generatorConfiguration>").append(newline); 
        return sb.toString();
        
    }
    
    public static String genDbTable()
    {

        StringBuilder sb = new StringBuilder();
        Connection conn = null;
        Statement stmt; //创建声明
        try
        {
            Class.forName(jdbcDriver);
            conn = DriverManager.getConnection(jdbcUrl, jdbcUser, jdbcPassword);
            
            stmt = conn.createStatement();
            ResultSet res = stmt.executeQuery("select * from user_tab_comments");
            while(res.next())
            {
                String tablename = res.getString(1);
                String tabletype = res.getString(2);
                if(tabletype.equals("TABLE")&&tablename.indexOf(tableKey)!=-1)
                {
                sb.append("<table tableName="");
                sb.append(tablename);
                sb.append("" domainObjectName="");
                sb.append(StringUtils.toCapitalizeCamelCase(tablename));
                sb.append("" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>").append(newline);
            
                }
            }

        } catch (Exception e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally
        {
            if (conn != null)
            {
                try
                {
                    conn.close();
                } catch (SQLException e)
                {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
        
        return sb.toString();

    }
    
    public static void main(String[] args)
    {
        System.out.println(genConfig());
    }
}

　　

3/  使用Java 代码 遍历 MYSQL，生成可用的配置

package com.panie.common.utils;



import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class MybatisConfigAutoGen
{
    
    public static String jdbcDriver = "com.mysql.jdbc.Driver";
    public static String jdbcUrl = "jdbc:mysql://localhost:3306/blogdb?useUnicode=true&characterEncoding=utf-8";
    public static String jdbcUser = "root";
    public static String jdbcPassword = "123456";
    public static String newline = "
";
    public static String tableKey = "sys_";
    
    public static String driverJar = "mysql-connector-java-5.1.38.jar";//所使用驱动包
    
    public static String entityPkg = "com.panie.modules.sys.entity";
    public static String mappingPkg = "mappings.com.panie.sys.configure";
    public static String daoPkg = "com.panie.modules.sys.dao";
    
    public static String genConfig()
    {
        StringBuilder sb = new StringBuilder();
        sb.append("<?xml version="1.0" encoding="UTF-8"?>").append(newline);
        sb.append("<!DOCTYPE generatorConfiguration  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" ").append(newline);
        sb.append(""http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> ").append(newline);  
        sb.append("<generatorConfiguration>").append(newline);      
        sb.append("    <classPathEntry  location="").append(driverJar).append(""/> ").append(newline);    
        sb.append("    <context id="DB2Tables"  targetRuntime="MyBatis3">").append(newline);      
        sb.append("        <commentGenerator>").append(newline);       
        sb.append("            <property name="suppressDate" value="true"/>").append(newline); 
        sb.append("            <property name="suppressAllComments" value="true"/> ").append(newline);      
        sb.append("        </commentGenerator>").append(newline);      
        sb.append("        <jdbcConnection driverClass="").append(jdbcDriver).append("" connectionURL="").append(jdbcUrl).append("" userId="").append(jdbcUser).append("" password="").append(jdbcPassword).append(""> ").append(newline);      
        sb.append("        </jdbcConnection>").append(newline);       
        sb.append("       <javaTypeResolver>   ").append(newline);    
        sb.append("            <property name="forceBigDecimals" value="false"/> ").append(newline);      
        sb.append("        </javaTypeResolver>").append(newline);        
        sb.append("        <javaModelGenerator targetPackage="").append(entityPkg).append("" targetProject="src">  ").append(newline);   
        sb.append("            <property name="enableSubPackages" value="true"/>  ").append(newline);   
        sb.append("            <property name="trimStrings" value="true"/>").append(newline);     
        sb.append("        </javaModelGenerator> ").append(newline); 
        sb.append("        <sqlMapGenerator targetPackage="").append(mappingPkg).append("" targetProject="src">").append(newline);     
        sb.append("            <property name="enableSubPackages" value="true"/>").append(newline);     
        sb.append("        </sqlMapGenerator>").append(newline);
        sb.append("        <javaClientGenerator type="XMLMAPPER" targetPackage="").append(daoPkg).append("" targetProject="src"> ").append(newline);    
        sb.append("            <property name="enableSubPackages" value="true"/> ").append(newline);    
        sb.append("        </javaClientGenerator>  ").append(newline);   
        sb.append(genDbTable()).append(newline); 
        sb.append("    </context>").append(newline); 
  
        sb.append("</generatorConfiguration>").append(newline); 
        return sb.toString();
        
    }
    
    public static String genDbTable()
    {

        StringBuilder sb = new StringBuilder();
        Connection conn = null;
        Statement stmt; //创建声明
        try
        {
            Class.forName(jdbcDriver);
            conn = DriverManager.getConnection(jdbcUrl, jdbcUser, jdbcPassword);
            DatabaseMetaData metadata = conn.getMetaData();
            ResultSet res = metadata.getTables("blogdb", null, null, null);
            while(res.next())
            {
                String tablename = res.getString(3);
                String tabletype = res.getString(4);
                if(tabletype.equals("TABLE")&&tablename.toLowerCase().indexOf(tableKey)!=-1)
                {
                sb.append("<table tableName="");
                sb.append(tablename);
                sb.append("" domainObjectName="");
                sb.append(StringUtils.toCapitalizeCamelCase(tablename));
                sb.append("" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>").append(newline);
            
                }
            }

        } catch (Exception e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally
        {
            if (conn != null)
            {
                try
                {
                    conn.close();
                } catch (SQLException e)
                {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
        
        return sb.toString();

    }
    
    public static void main(String[] args)
    {
        System.out.println(genConfig());
    }
}