SpringBoot项目整合JPA+QueryDSL，及apt-maven-plugin报错问题解决

╰半夏微凉° 2023-06-23 15:24 4阅读 0赞

闲暇之余项搞个JPA的Demo，采用的是SpringBoot + JPA + QueryDSL，开发工具为Eclipse。

JPA官网：[https://spring.io/projects/spring-data-jpa][https_spring.io_projects_spring-data-jpa]

QueryDSL官网：[http://www.querydsl.com/][http_www.querydsl.com]

QueryDSL各版本使用说明：[http://www.querydsl.com/static/querydsl/][http_www.querydsl.com_static_querydsl]（包含了：apidocs-api文档，reference-使用说明，jar包）

JPA依赖：

<dependency>
    	<groupId>org.springframework.boot</groupId>
    	<artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>

QueryDSL依赖：

<dependency>
    	<groupId>com.querydsl</groupId>
    	<artifactId>querydsl-apt</artifactId>
        <version>4.2.1</version>
    	<scope>provided</scope>
    </dependency>
    
    <dependency>
    	<groupId>com.querydsl</groupId>
    	<artifactId>querydsl-jpa</artifactId>
        <version>4.2.1</version>
    </dependency>
    
    
    <dependency>
    	<groupId>org.slf4j</groupId>
    	<artifactId>slf4j-log4j12</artifactId>
        <version>1.6.1</version>
    </dependency>

配置QueryDSL  Maven APT plugin插件：

<build>
     <plugins>
      <plugin>
       <groupId>com.mysema.maven</groupId>
    	<artifactId>apt-maven-plugin</artifactId>
    	<version>1.1.3</version>
    	<executions>
    	 <execution>
    	  <goals>
    	   <goal>process</goal>
    	  </goals>
    	  <configuration>
    	   <outputDirectory>target/generated-sources/java</outputDirectory>					           
           <processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor>
    	  </configuration>
    	</execution>
       </executions>
      </plugin>
     </plugins>
    </build>

在配置apt-maven-plugin插件时，发现pom文件中一直报错：

You need to run build with JDK or have tools.jar on the classpath.If this occures during eclipse build make sure you run eclipse under JDK as well (com.mysema.maven:apt-maven-plugin:1.1.3:process:default:generate-sources)

解决办法：

1、指定eclipse的JDK。在eclipse安装目录下eclipse.ini文件中增加- vm D:\\Program Files\\Java\\jdk1.8.0\_221\\bin\\javaw.exe。

JDK路径改成自己的JDK安装目录。

-vm
    D:\Program Files\Java\jdk1.8.0_221\bin\javaw.exe
    -startup
    plugins/org.eclipse.equinox.launcher_1.5.500.v20190715-1310.jar
    --launcher.library
    plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.1100.v20190907-0426
    -product
    org.eclipse.epp.package.jee.product
    .............

2、复制D:\\Program Files\\Java\\jdk1.8.0\_221\\lib文件夹下的“tools.jar”到D:\\Program Files\\Java\\jdk1.8.0\_221\\jre\\lib文件夹内。

JDK路径改成自己的JDK安装目录。

3、window---preferences ---java---installed JREs，打开编辑界面，把D:\\Program Files\\Java\\jdk1.8.0\_221\\jre\\lib下的tools.jar添加进来。如下图所示：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjMxNTYwMA_size_16_color_FFFFFF_t_70][]

4、选中项目---右键---maven---update project，报错问题解决。

[https_spring.io_projects_spring-data-jpa]: https://spring.io/projects/spring-data-jpa
[http_www.querydsl.com]: http://www.querydsl.com/
[http_www.querydsl.com_static_querydsl]: http://www.querydsl.com/static/querydsl/
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjMxNTYwMA_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191220101242671.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjMxNTYwMA==,size_16,color_FFFFFF,t_70