JavaWeb学习笔记-mybatis-26-逆向工程

mybatis官方提供逆向工程，可以针对单表自动生成mybatis执行所需要的代码

企业实际开发中，常用的逆向工程：
由数据库的表生成java代码

下载逆向工程
mybatis-generator-core

java程序方式，不依赖开发工具

<generatorConfiguration>
  <context id="DB2Tables" targetRuntime="MyBatis3">
    <jdbcConnection driverClass="COM.ibm.db2.jdbc.app.DB2Driver"
        connectionURL="jdbc:db2:TEST"
        userId="db2admin"
        password="db2admin">
    jdbcConnection>

    <javaTypeResolver >
      <property name="forceBigDecimals" value="false" />
    javaTypeResolver>
    
    <javaModelGenerator targetPackage="test.model" targetProject="\MBGTestProject\src">
      <property name="enableSubPackages" value="true" />
      <property name="trimStrings" value="true" />
    javaModelGenerator>

    <sqlMapGenerator targetPackage="test.xml"  targetProject="\MBGTestProject\src">
      <property name="enableSubPackages" value="true" />
    sqlMapGenerator>

    <javaClientGenerator type="XMLMAPPER" targetPackage="test.dao"  targetProject="\MBGTestProject\src">
      <property name="enableSubPackages" value="true" />
    javaClientGenerator>
    
    <table schema="DB2ADMIN" tableName="ALLTYPES" domainObjectName="Customer" >
      <property name="useActualColumnNames" value="true"/>
      <generatedKey column="ID" sqlStatement="DB2" identity="true" />
      <columnOverride column="DATE_FIELD" property="startDate" />
      <ignoreColumn column="FRED" />
      <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" />
    table>

  context>
generatorConfiguration>  

执行文件，生成代码

   List<String> warnings = new ArrayList<String>();
   boolean overwrite = true;
   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);

将生成的文件拷贝到自己工程中，并进行测试