a. mybatis-generator:https://gitee.com/gaap/mybatis-generator
在eclipse 中下载,importa项目,如图
b.配置mbg.xml
<?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 id="testTables" targetRuntime="MyBatis3"> <!-- JavaBean 实现 序列化 接口 --> <plugin type="org.mybatis.generator.plugins.SerializablePlugin" /> <!-- genenat entity时,生成toString --> <plugin type="org.mybatis.generator.plugins.ToStringPlugin" /> <!-- 自定义物理分页 可生成支持Mysql数据的limit 不支持Oracle --> <plugin type="org.mybatis.generator.plugins.page.PaginationPlugin" /> <!-- 自定义查询指定字段 --> <plugin type="org.mybatis.generator.plugins.field.FieldsPlugin" /> <!-- 开启支持内存分页 可生成 支持内存分布的方法及参数 <plugin type="org.mybatis.generator.plugins.RowBoundsPlugin" /> --> <!-- generate entity时,生成hashcode和equals方法 <plugin type="org.mybatis.generator.plugins.EqualsHashCodePlugin" /> --> <!-- 将Example改名为Criteria 当然 想改成什么都行~ --> <plugin type="org.mybatis.generator.plugins.RenameExampleClassPlugin"> <property name="searchString" value="Example$" /> <!-- 替换后 <property name="replaceString" value="Criteria" /> --> <property name="replaceString" value="Query" /> </plugin> <!-- 将UserMapper.xml 改名为 UserDao.xml 当然 想改成什么都行~ --> <plugin type="org.mybatis.generator.plugins.rename.RenameSqlMapperPlugin"> <property name="searchString" value="Mapper" /> <property name="replaceString" value="Dao" /> </plugin> <!-- 将UserMapper.java 改名为 UserDao.java 当然 想改成什么都行~ --> <plugin type="org.mybatis.generator.plugins.rename.RenameJavaMapperPlugin"> <property name="searchString" value="Mapper" /> <property name="replaceString" value="Dao" /> </plugin> <commentGenerator type="org.mybatis.generator.plugins.comment.MyCommentGenerator"> <!-- 是否去除自动生成的注释 true:是 : false:否 <property name="suppressAllComments" value="true" /> --> </commentGenerator> <!--数据库连接的信息:驱动类、连接地址、用户名、密码 --> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/ssm_crud" userId="root" password="root" /> <!-- <jdbcConnection driverClass="oracle.jdbc.OracleDriver" connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:yycg" userId="yycg" password="yycg"> </jdbcConnection> --> <!-- 默认false,把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer,为 true时把JDBC DECIMAL 和 NUMERIC 类型解析为java.math.BigDecimal --> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- targetProject: POJO类 --> <!-- <sqlMapGenerator targetPackage="com.taotao.ssm.bean" targetProject=".\src\main\java"> --> <javaModelGenerator targetPackage="com.taotao.ssm.bean" targetProject=".\src"> <!-- enableSubPackages:是否让schema作为包的后缀 ,即是否允许子包,targetPackage.schemaName.tableName--> <property name="enableSubPackages" value="false" /> <!-- 从数据库返回的值被清理前后的空格,即,是否对类CHAR类型的列的数据进行trim操作 --> <property name="trimStrings" value="true" /> <!-- 是否对model添加 构造函数 --> <property name="constructorBased" value="true"/> </javaModelGenerator> <!-- targetProject: mapper文件 --> <!-- <sqlMapGenerator targetPackage="com.taotao.ssm.dao" targetProject=".\src\main\java"> --> <sqlMapGenerator targetPackage="mapper" targetProject=".\src"> <!-- enableSubPackages:是否让schema作为包的后缀 --> <property name="enableSubPackages" value="false" /> </sqlMapGenerator> <!-- targetPackage: mapper接口 --> <javaClientGenerator type="XMLMAPPER" targetPackage="com.taotao.ssm.dao" targetProject=".\src"> <!-- enableSubPackages:是否让schema作为包的后缀 --> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!-- 指定数据库表 --> <table schema="" tableName="tbl_dept" domainObjectName="Department" /> <table schema="" tableName="tbl_emp" domainObjectName="Employee" /> </context> </generatorConfiguration>
c.运行:mbg.java
import java.io.File; 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.internal.DefaultShellCallback; public class mbg { public static void main(String[] args) throws Exception, Exception { List<String> warnings = new ArrayList<String>(); boolean overwrite = true; File configFile = new File("mbg.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); } }
d. 生成文件,成功
e. 如有问题,请留言。