ssm项目中逆向工程的配置

一、添加依赖

<!--逆向工程 -->
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.5</version>
        </dependency>
<!--Mysql依赖 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.25</version>
        </dependency>

二、添加插件

<!--Mybatis逆向工程插件 -->
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.2</version>
                <dependencies>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>5.1.35</version>
                    </dependency>
                </dependencies>
                <configuration>
                    <!--配置文件的路径 -->
                    <configurationFile>src/main/resources/generator/generatorConfig.xml</configurationFile>
                    <overwrite>true</overwrite>
                </configuration>
            </plugin>

三、准备逆向工程配置文件

<?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>
    <!-- targetRuntime="MyBatis3Simple"中加Simple为较为简单的代码 -->
    <context id="testTables" targetRuntime="MyBatis3Simple">
        <commentGenerator>
            <!-- 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/oline_q_a" userId="root"
            password="ROOT">
        </jdbcConnection>
        <!-- <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:生成PO类的位置 -->
        <javaModelGenerator targetPackage="com.ssm.pojo"
            targetProject="question_and_answer2">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
            <!-- 从数据库返回的值被清理前后的空格 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!--******************************************* targetProject:mapper映射文件生成的位置 -->
        <sqlMapGenerator targetPackage="com.ssm.mapper"
            targetProject="question_and_answer2">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        <!-- **********************************************targetPackage：mapper接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER"
            targetPackage="com.ssm.mapper" targetProject="question_and_answer2">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        <!-- ********************************************************************指定数据库表 -->
        <table tableName="course" enableCountByExample="false"
            enableUpdateByExample="false" enableDeleteByExample="false"
            enableSelectByExample="false" selectByExampleQueryId="false"></table>
        <table tableName="notice" enableCountByExample="false"
            enableUpdateByExample="false" enableDeleteByExample="false"
            enableSelectByExample="false" selectByExampleQueryId="false"></table>
        <table tableName="question" enableCountByExample="false"
            enableUpdateByExample="false" enableDeleteByExample="false"
            enableSelectByExample="false" selectByExampleQueryId="false"></table>
        <table tableName="reply" enableCountByExample="false"
            enableUpdateByExample="false" enableDeleteByExample="false"
            enableSelectByExample="false" selectByExampleQueryId="false"></table>
        <table tableName="users" enableCountByExample="false"
            enableUpdateByExample="false" enableDeleteByExample="false"
            enableSelectByExample="false" selectByExampleQueryId="false"></table>
    </context>
</generatorConfiguration>

四、下载准备，Mybatis Generator插件

五、运行配置文件，生成pojo、mapper和mapper接口

 六、遇到的问题