用mybatis-generator自动生成JAVA的实体类和mapping等

1.引入mybatis-generator-core jar包

在项目pom.xml文件下

 <properties> </properties>中加入：

        <!-- Java接口和实体类 -->
        <targetJavaProject>${basedir}/src/main/java</targetJavaProject>
        <targetMapperPackage>com.machbusiness.mapper</targetMapperPackage>
        <targetModelPackage>com.machbusiness.entity</targetModelPackage>
        <!-- XML生成路径 -->
        <targetResourcesProject>${basedir}/src/main/resources</targetResourcesProject>
        <targetXMLPackage>mybatis</targetXMLPackage>
        <!-- 依赖版本 -->
        <mapper.version>3.4.0</mapper.version>
        <mybatis.version>3.3.1</mybatis.version>
        <mybatis.spring.version>1.2.4</mybatis.spring.version>
        <pagehelper.version>4.1.1</pagehelper.version>

<plugins> </plugins>中加入

<!-- 此插件用来生成通用mapper的代码 -->
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.2</version>
                <configuration>
                    <configurationFile>${basedir}/src/main/resources/generatorConfig.xml</configurationFile>
                    <overwrite>true</overwrite>
                    <verbose>true</verbose>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>oracle</groupId>
                        <artifactId>ojdbc14</artifactId>
                        <version>11.2.0.4</version>
                    </dependency>
                    <dependency>
                        <groupId>tk.mybatis</groupId>
                        <artifactId>mapper</artifactId>
                        <version>${mapper.version}</version>
                    </dependency>
                </dependencies>
            </plugin>

2.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>

    <classPathEntry
            location="D:\BankOfZhihui\.m2\repository\oracle\ojdbc14\11.2.0.4"/>
    <context id="Oracle" targetRuntime="MyBatis3Simple" defaultModelType="flat">
        <property name="beginningDelimiter" value="`"/>
        <property name="endingDelimiter" value="`"/>
        <property name="mergeable" value="false"></property>
        <plugin type="tk.mybatis.mapper.generator.MapperPlugin">
            <property name="mappers" value="tk.mybatis.mapper.common.Mapper"/>
        </plugin>
        <!--数据库链接地址账号密码-->
        <jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver"
                        connectionURL="jdbc:oracle:thin:@192.168.2.4:21521:orcl"
                        userId=""
                        password="">
        </jdbcConnection>
        <!--生成Model类存放位置-->
        <javaModelGenerator targetPackage="${targetModelPackage}" targetProject="${targetJavaProject}"/>
        <!--生成映射文件存放位置-->
        <sqlMapGenerator targetPackage="${targetXMLPackage}" targetProject="${targetResourcesProject}"/>
        <!--生成Dao类存放位置-->
        <javaClientGenerator targetPackage="${targetMapperPackage}" targetProject="${targetJavaProject}"
                             type="XMLMAPPER"/>
        <!-- 要生成的表 tableName是数据库中的表名或视图名 domainObjectName是实体类名-->
        <table tableName="" domainObjectName=""></table>
    </context>
</generatorConfiguration>

3.双击下图指示的命令，生成实体类等。