【JAVA】在SpringBoot 项目中 利用maven 的generate插件

版权声明： https://blog.csdn.net/staHuri/article/details/81097069

使用maven 插件 generate生成MyBatis相关文件

在项目中增加 maven 依赖

- mybatis-spring-boot-starter 
- mysql-connector-java
- mybatis-generator-maven-plugin 插件 自动读取 resources 下的generatorConfig.xml 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.wangSpringBoot</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </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>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.18</version>
            <scope>provided</scope>
        </dependency>
        <!--热部署-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>
        <!--test-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--MyBatis-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.1</version>
        </dependency>
        <!--Mysql JDBC驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
    </dependencies>


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.7</version>
                <executions>
                    <execution>
                        <id>Generate MyBatis Artifacts</id>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                    </execution>
                </executions>
                <dependencies>
                    <dependency>
                        <groupId>org.hsqldb</groupId>
                        <artifactId>hsqldb</artifactId>
                        <version>2.3.4</version>
                    </dependency>
                </dependencies>
            </plugin>


        </plugins>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.*</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/webapp</directory>
                <targetPath>META-INF/resources</targetPath>
                <includes>
                    <include>**/*.*</include>
                </includes>
            </resource>
        </resources>


    </build>


</project>

SpringBoot 项目中application.properties 配置

• mybatis.mapper-locations 用来指定mapper 存放路径
• spring.datasource.username 用来指定 用户名
• spring.datasource.password 用来指定密码
• spring.datasource.driver-class-name 用来指定链接驱动
• spring.datasource.url 用来指定链接路由地址

mybatis.mapper-locations=classpath:com/wangspringboot/demo/mapper/*.xml
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/wt?useUnicode=true&characterEncoding=utf8&useSSL=false

resources 下配置 generatorConfig.xml

• 此项内容为直接修改相关配置即可

<?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>
    <!-- 本地数据库驱动程序jar包的全路径 -->
    <classPathEntry
            location="D:\Program Files\MavenRepository\mysql\mysql-connector-java\5.1.46\mysql-connector-java-5.1.46.jar"/>
    <context id="context" targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressAllComments" value="false"/>
            <property name="suppressDate" value="true"/>
        </commentGenerator>
        <!-- 数据库的相关配置 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/wt" userId="root"
                        password="root"/>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!-- 实体类生成的位置 -->
        <javaModelGenerator targetPackage="com.wangspringboot.demo.model" targetProject="src/main/java">
            <property name="enableSubPackages" value="false"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        <!-- *Mapper.xml 文件的位置 -->
        <sqlMapGenerator targetPackage="com.wangspringboot.demo.mapper" targetProject="src/main/java">
            <property name="enableSubPackages" value="false"/>
        </sqlMapGenerator>
        <!-- Mapper 接口文件的位置 -->
        <javaClientGenerator targetPackage="com.wangspringboot.demo.mapper" targetProject="src/main/java"
                             type="XMLMAPPER">
            <property name="enableSubPackages" value="false"/>
        </javaClientGenerator>
        <!-- 相关表的配置-->
        <table tableName="t"
               domainObjectName="Tq"
               enableCountByExample="false"
               enableUpdateByExample="false"
               enableDeleteByExample="false"
               enableSelectByExample="false"
               selectByExampleQueryId="false"
        />

    </context>
</generatorConfiguration>

创建相关目录

查看插件

执行

• 选中maven 下 generator 双击运行
  

SpringBootMyBatis 使用

• 在 service 的实现类上添加 @Service 注解

@Service
public class TqServiceImpl implements TqService {
    @Autowired
    private TqMapper tqmapper;

    @Override
    public Tq insTq() {
        Tq t = new Tq();
        t.setZ(12.0);
        t.setY(12.0);
        t.setX(12.0);
        tqmapper.insert(t);
        return t;
    }
}

• 相关调用

@RestController
public class MyBatisController {

    @Autowired
    private TqService tqService;


    @GetMapping("/boot/tq")
    public Object tq(){
        return tqService.insTq();
    }
}

• 启动SpringBoot WEB项目后 访问

{
x: 12,
y: 12,
z: 12
}