mybatis逆向工程

一、使用逆向工程生成mapper

1、创建Maven工程

2、引入相关的依赖

pom文件如下

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.huawei</groupId>
    <artifactId>mybatis.generate.mysql</artifactId>
    <version>1.0-SNAPSHOT</version>
    <!--mybatis逆向工程maven工具-->
    <build>
        <plugins>
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.3</version>
                <configuration>
                    <configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
                    <verbose>true</verbose>
                    <overwrite>true</overwrite>
                </configuration>
                <executions>
                    <execution>
                        <id>GenerateMyBatisArtifacts</id>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                    </execution>
                </executions>
                <dependencies>
                    <dependency>
                        <groupId>org.mybatis.generator</groupId>
                        <artifactId>mybatis-generator-core</artifactId>
                        <version>1.3.3</version>
                    </dependency>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>5.1.46</version>
                        <scope>runtime</scope>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>
</project>

3.在Java文件下创建相关的包

上面我们指定了

cn.blog.mapper、

cn.immoc.dataobject

cn.blog.service.impl

cn.immoc.mapper

4、执行

（1）

（2）生成后再target下面文件夹

2、在resource文件下创建文件generatorConfig.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="test" targetRuntime="MyBatis3">
        <plugin type="org.mybatis.generator.plugins.EqualsHashCodePlugin"></plugin>
        <plugin type="org.mybatis.generator.plugins.SerializablePlugin"></plugin>
        <plugin type="org.mybatis.generator.plugins.ToStringPlugin"></plugin>
        <commentGenerator>
            <!--这个元素用来去除指定生成的注释中是否包含生成的日期false:表示保护-->
            <!--如果生成日期，会造成即使修改一个字段，整个实体类所有属性都会发生变化，不利于版本控制，所以设置为true-->
            <property name="suppressDate" value="true"/>
            <!--是否去除自动生成的注释true：是：false:否-->
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>
        <!--数据库链接URL，用户名、密码-->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://111.230.180.89:3306/pinyougoudb" userId="root"
                        password="xu0719wd">
        </jdbcConnection>
        <javaTypeResolver>
            <!--ThispropertyisusedtospecifywhetherMyBatisGeneratorshould
            forcetheuseofjava.math.BigDecimalforDECIMALandNUMERICfields,-->
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!--生成模型的包名和位置-->
        <javaModelGenerator targetPackage="cn.immoc.dataobject"
                            targetProject="target">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        <!--生成映射文件的包名和位置-->
        <sqlMapGenerator targetPackage="cn.immoc.mapper"
                         targetProject="target">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <!--生成DAO的包名和位置-->
        <javaClientGenerator type="XMLMAPPER"
                             targetPackage="cn.blog.mapper" implementationPackage="cn.blog.service.impl"
                             targetProject="target">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <!--要生成哪些表-->
        <table tableName="`tb_address`"></table>

    </context>
</generatorConfiguration>

二、逆向工程生成的mapper在springboot下的使用

1、测试环境jdk1.8；IDEA；mysql5.7

2、创建工程

2.1引入相关的依赖并配置mapper的路径

<?xmlversion="1.0"encoding="UTF-8"?>

<projectxmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">

<modelVersion>4.0.0</modelVersion>

 

<groupId>com.example</groupId>

<artifactId>sell-weixin</artifactId>

<version>0.0.1-SNAPSHOT</version>

<modules>

<module>../ganerate-code</module>

</modules>

<packaging>pom</packaging>

 

<name>sell-weixin</name>

<description>DemoprojectforSpringBoot</description>

 

<parent>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

<version>2.0.1.RELEASE</version>

<relativePath/><!--lookupparentfromrepository-->

</parent>

 

<properties>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

<java.version>1.8</java.version>

</properties>

 

<dependencies>

<!--google相关json依赖-->

<dependency>

<groupId>com.google.code.gson</groupId>

<artifactId>gson</artifactId>

</dependency>

<!--热部署使用jar包-->

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-devtools</artifactId>

<version>2.0.1.RELEASE</version>

<optional>true</optional>

<!--optional=true,依赖不会传递，该项目依赖devtools；之后依赖该项目的项目如果想要使用devtools，需要重新引入-->

</dependency>

<dependency>

<groupId>org.projectlombok</groupId>

<artifactId>lombok</artifactId>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-freemarker</artifactId>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

</dependency>

<dependency>

<groupId>org.mybatis.spring.boot</groupId>

<artifactId>mybatis-spring-boot-starter</artifactId>

<version>1.3.2</version>

</dependency>

 

<dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

<scope>runtime</scope>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-test</artifactId>

<scope>test</scope>

</dependency>

</dependencies>

 

<build>

<!--包含mapperxml文件-->

<resources>

<resource>

<directory>src/main/java</directory>

<includes>

<include>**/*.xml</include>

</includes>

</resource>

</resources>

<plugins>

<plugin>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-maven-plugin</artifactId>

</plugin>

</plugins>

</build>

 

 

</project>

2.2配置application.yml

spring:

datasource:

driver-class-name:com.mysql.jdbc.Driver

username:root

password:123456

url:jdbc:mysql://192.168.25.143:3306/sell?characterEncoding=utf8&useSSL=true

jpa:

show-sql:true

#ldatabase-platform:org.hibernate.dialect.MySQL5Dialect

 

#加载mybatis配置文件mybatis:

#mybatis:

#mapper-locations:classpath*:com.immoc.mapper/*Mapper.xml

#type-aliases-package:cn.itcast.domain

#数据源

 

3、将逆向工程生成的mapper和pojo复制到相关工程下

=====》注意包名是否相关，不同则则修改mapper.xml文件下包名相关路径，否则会报错

 

4、测试

 

packagecom.immoc.mapper;

 

importcom.immoc.dataobject.ProductInfo;

importlombok.extern.slf4j.Slf4j;

importorg.junit.Assert;

importorg.junit.Test;

importorg.junit.runner.RunWith;

importorg.springframework.beans.factory.annotation.Autowired;

importorg.springframework.boot.test.context.SpringBootTest;

importorg.springframework.test.context.junit4.SpringRunner;

 

@Slf4j

@SpringBootTest

@RunWith(SpringRunner.class)

publicclassProductInfoMapperTest{

@Autowired

ProductInfoMapperinfoMapper;

 

@Test

publicvoidfindByProductId(){

StringproductId="1525103526600833270";

ProductInfoinfo=infoMapper.selectByPrimaryKey(productId);

System.out.println(1);

System.out.println(info);

Assert.assertNotNull(info);

}

 

 

 

 

 

 

}