【精华版】MyBatis生成逆向工程

1.加入相应的pom的jar包

<dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
        </dependency>

2.idea逆向工程插件

<build>
        <finalName>noodle-mybatis</finalName>
        <plugins>
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.2</version>
                <configuration>
                    <configurationFile>src/main/resources/mybatis/mybatis-generator.xml</configurationFile>
                    <verbose>true</verbose>
                    <overwrite>true</overwrite>
                </configuration>
            </plugin>
        </plugins>
    </build>

3.属性文件

jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.connectionURL=jdbc:mysql://127.0.0.1:3306/websocket?useUnicode=true&characterEncoding=utf8
jdbc.userId=root
jdbc.password=welcome
jdbc.driverLocation=E:\\coding\\flxlib\\mysql-connector-java-5.1.35.jar

4.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>
    <!--导入属性配置-->
    <properties resource="mybatis/generator.properties"/>
    <!--数据库驱动,最好不要有中文字符,不然会找不到-->
    <classPathEntry location="${jdbc.driverLocation}"/>

    <context id="testTables" targetRuntime="MyBatis3">

        <commentGenerator>
            <!-- 是否去除自动生成的注释 true：是 ： false:否-->
            <property name="suppressDate" value="true"/>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>
        <!--数据库链接地址账号密码-->
        <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
        <jdbcConnection driverClass="${jdbc.driverClass}"
                        connectionURL="${jdbc.connectionURL}"
                        userId="${jdbc.userId}"
                        password="${jdbc.password}">
        </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.flx.noodle.mybatis.entity" targetProject="src/main/java">
            <!-- 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.flx.noodle.mybatis.entity" targetProject="src/main/java">
            <property name="enableSubPackages" value="false"/>
        </sqlMapGenerator>
        <!-- targetPackage：mapper接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.flx.noodle.mybatis.dao" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <!--生成对应表及类名,需要记住的一点是逆向工程无法生成关联关系,只能生成单表操作-->
        <table tableName="ws_user" domainObjectName="WsUser"/>
        <table tableName="ws_room" domainObjectName="WsRoom"/>

    </context>
</generatorConfiguration>

5.生成主文件

package com.flx.noodle.mybatis.generator;

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;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

/**
 * Created by fenglixiong on 2017/10/22.
 */
public class GeneratorMain {

    public static void main(String[] args) {
        try {
            generator();
            System.out.println("successful!!!");
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    public static void generator() throws Exception{
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        //项目根路径不要有中文,我的有中文,所以使用绝对路径
        File configFile = new File("E:\\coding\\BeefNoodle\\noodle-mybatis\\src\\main\\resources\\mybatis\\mybatis-generator.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);
    }

}

6.tomcat配置