QueryDSL 生成的类在 Spring Tool Suite 的 maven 项目中不断被删除

Question

我在 Eclipse 的 Maven Spring Boot 项目中使用 QueryDSL，激活了 Spring DevTools，一切正常，除了 QueryDSL 中使用的 QClass 被删除，下次我尝试重新启动项目时（或它尝试通过 Spring DevTools 自动重新加载）我收到一个错误，我必须再次通过“Run as”->“Maven generate-sources”。 我不确定究竟是什么触发了删除，但我注意到例如添加或删除文件会触发删除。删除 DevTools 没有帮助。

有没有办法防止这些不断删除，或者确保类在之后自动重新生成？

这是我的 pom.xml 的相关部分：

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>REDACTED</groupId>
    <artifactId>REDACTED</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>REDACTED</name>
    <description>REDACTED</description>

    <properties>
        <java.version>11</java.version>
    </properties>

    <dependencies>
    [...]
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
    [...]
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>com.querydsl</groupId>
            <artifactId>querydsl-core</artifactId>
        </dependency>
        <dependency>
            <groupId>com.querydsl</groupId>
            <artifactId>querydsl-jpa</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <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/customfolder</outputDirectory>
                            <clearOutputDir>false</clearOutputDir>
                            <processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor>
                        </configuration>
                    </execution>
                </executions>
                <dependencies>
                    <dependency>
                        <groupId>com.querydsl</groupId>
                        <artifactId>querydsl-apt</artifactId>
                        <version>${querydsl.version}</version>
                    </dependency>
                </dependencies>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>build-helper-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <id>add-source</id>
                        <phase>generate-sources</phase>
                        <goals>
                            <goal>add-source</goal>
                        </goals>
                        <configuration>
                            <sources>
                                <source>${project.build.directory}/generated-sources/customfolder/</source>
                            </sources>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

Answer 1

如下更改 pom.xml。它会工作

 <dependency>
     <groupId>com.querydsl</groupId>
     <artifactId>querydsl-apt</artifactId>

  </dependency>
  <dependency>
      <groupId>com.querydsl</groupId>
      <artifactId>querydsl-jpa</artifactId>
  </dependency>

并添加插件

 <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>