使用mybatis-generator自動生成Mybatis

使用mybatis-generator自動生成Mybatis

我這裏使用的是IDEA，使用的Maven管理，整合SpringBoot+Mybatis+Druid

首先要在pom文件中導入相關的配置，已經在裏面進行標註 ！！！處

<?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.miaoshaproject</groupId>
  <artifactId>miaosha</artifactId>
  <version>1.0-SNAPSHOT</version>

  <name>miaosha</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.2.1.RELEASE</version>
  </parent>


  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>

    <!--springboot的核心包-->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!--mysql-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.41</version>
    </dependency>
    <!--阿里數據源連接池-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.3</version>
    </dependency>
    <!--Mybatis對SpringBoot的支持jar-->
    <dependency>
      <groupId>org.mybatis.spring.boot</groupId>
      <artifactId>mybatis-spring-boot-starter</artifactId>
      <version>1.3.1</version>
    </dependency>


    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-jar-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
        <!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
        <plugin>
          <artifactId>maven-site-plugin</artifactId>
          <version>3.7.1</version>
        </plugin>
          <plugin>
              <artifactId>maven-project-info-reports-plugin</artifactId>
              <version>3.0.0</version>
          </plugin>

			<!--!!!!!!!!!!!!!!! 引入配置的主要插件-->
          <plugin>
              <groupId>org.mybatis.generator</groupId>
              <artifactId>mybatis-generator-maven-plugin</artifactId>
              <version>1.3.5</version>
              <dependencies>
                  <dependency>
                      <groupId>org.mybatis.generator</groupId>
                      <artifactId>mybatis-generator-core</artifactId>
                      <version>1.3.5</version>
                  </dependency>
                  <dependency>
                      <groupId>mysql</groupId>
                      <artifactId>mysql-connector-java</artifactId>
                      <version>5.1.41</version>
                  </dependency>
              </dependencies>
              <executions>
                  <execution>
                      <id>mybatis generator</id>
                      <phase>package</phase>
                      <goals>
                          <goal>generate</goal>
                      </goals>
                  </execution>
              </executions>
              <configuration>
                  <!--允許移動生成的文件-->
                  <verbose>true</verbose>
                  <!--允許自動覆蓋文件-->
                  <overwrite>true</overwrite>
                  <!--這個工具的配置文件存放的位置-->
                  <configurationFile>
                      src/main/resources/mybatis-generator.xml
                  </configurationFile>
              </configuration>
          </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

這是當前目錄的結構

mybatis-generator.xml內容

<?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="/Program Files/IBM/SQLLIB/java/db2java.zip" />-->

    <context id="DB2Tables" targetRuntime="MyBatis3">

        <!--數據庫鏈接地址賬號密碼-->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://127.0.0.1:3306/xxx"
                        userId="root"
                        password="root">
        </jdbcConnection>


        <!--<javaTypeResolver >-->
            <!--<property name="forceBigDecimals" value="false" />-->
        <!--</javaTypeResolver>-->

        <!--生成存放MDataObject類存放的位置-->
        <javaModelGenerator targetPackage="com.miaoshaproject.dataobject" targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!--生成映射文件存放位置-->
        <sqlMapGenerator targetPackage="mapping"  targetProject="src/main/resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!--生成Dao類存放位置-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.miaoshaproject.dao"  targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!--生成表及類名-->
        <table tableName="user_info" domainObjectName="UserDO" enableCountByExample="false" enableUpdateByExample="false"
         enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
        <table tableName="user_password" domainObjectName="UserPasswordDO" enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
        <!--加的這些false是去掉配置文件中的複雜操作，讓配置文件按照正常的sql語句做-->
    </context>
</generatorConfiguration>

這裏我是在數據庫中已經創建好數據庫的，要表名和配置文件中的表名一致

application.xml內容

server.port=8090
mybatis.mapper-locations=classpath:mapping/*.xml

在所有配置好後
在上面的菜單上點run->edit con… ->+ ->maven
在command line中輸入 mybatis-generator:generate
如圖所示：

運行即可

最終會生成如下的目錄：

創建成功