Spring Boot整合Mybati之逆向工程

Posted 2021-03-24 sakura-yxf

项目架构

 

 

pom文件

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.11.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.bjsxt</groupId>
    <artifactId>spring-boot-mybatis-nx</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>spring-boot-mybatis-nx</name>
    <description>spring-boot-mybatis-nx</description>

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

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.38</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.1</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
             <!--配置Generator插件-->
             <plugin>
                 <groupId>org.mybatis.generator</groupId>
                 <artifactId>mybatis-generator-maven-plugin</artifactId>
                 <version>1.3.5</version>
                 <dependencies>
                     <dependency>
                         <groupId>mysql</groupId>
                         <artifactId>mysql-connector-java</artifactId>
                         <version>5.1.38</version>
                     </dependency>
                 </dependencies>

                 <!--指定配置文件的路径-->
                 <configuration>
                     <configurationFile>${project.basedir}/src/main/resources/generatorConfig.xml</configurationFile>
                     <verbose>true</verbose>
                     <overwrite>true</overwrite>
                 </configuration>
             </plugin>
        </plugins>

         <!--配置资源拷贝插件-->
         <resources>
             <resource>
                 <directory>src/main/java</directory>
                 <includes>
                     <include>**/*.xml</include>
                 </includes>
             </resource>

             <resource>
                 <directory>src/main/resources</directory>
                 <includes>
                     <include>**/*.yml</include>
                     <include>**/*.properties</include>
                 </includes>
             </resource>
         </resources>
    </build>

</project>

 

其中起关键作用的是<build></build>部分

放入插件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="testTables" targetRuntime="MyBatis3">
        <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/book-order" userId="root" password="root">
        </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.bjsxt.pojo" 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.bjsxt.mapper" targetProject=".\\src\\main\\java">
            <!-- 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.bjsxt.mapper" targetProject=".\\src\\main\\java">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        <!-- 指定数据库表 -->
        <table schema="" tableName="orders"></table>
    </context>
</generatorConfiguration>

 

需要注意的是这几个地方

 

 根据个人需求修改数据库连接地址，以及用户名和密码

 

 

 使用逆向工程生成pojo类的项目存放位置

 

 

 

 

 生成mapper文件的存放位置

 

 

 

 

 生成mapper接口文件的存放位置

 

 

数据库的表名，注意别写错了