Spring數據Jpa查詢DSL Q Entityclasses not generating

這是pom.xml的要點。我使用的查詢DSL版本3.6.2Spring數據Jpa查詢DSL Q Entityclasses not generating

<dependency> 
     <groupId>com.mysema.querydsl</groupId> 
     <artifactId>querydsl-core</artifactId> 
    </dependency> 
    <dependency> 
     <groupId>com.mysema.querydsl</groupId> 
     <artifactId>querydsl-apt</artifactId> 
    </dependency> 
    <dependency> 
     <groupId>com.mysema.querydsl</groupId> 
     <artifactId>querydsl-jpa</artifactId> 
    </dependency> 
</dependencies> 
<build> 
<plugins> 
    <plugin> 
     <groupId>org.bsc.maven</groupId> 
     <artifactId>maven-processor-plugin</artifactId> 
     <version>2.2.4</version> 
     <configuration> 
      <defaultOutputDirectory> 
       ${project.build.directory}/generated-sources 
      </defaultOutputDirectory> 
      <processors> 
       <processor>org.mapstruct.ap.MappingProcessor</processor> 
      </processors> 
     </configuration> 
     <executions> 
      <execution> 
       <id>process</id> 
       <phase>generate-sources</phase> 
       <goals> 
        <goal>process</goal> 
       </goals> 
      </execution> 
     </executions> 
     <dependencies> 
      <dependency> 
       <groupId>org.mapstruct</groupId> 
       <artifactId>mapstruct-processor</artifactId> 
       <version>${mapstruct.version}</version> 
      </dependency> 
     </dependencies> 
    </plugin> 
    <plugin> 
     <groupId>com.mysema.maven</groupId> 
     <artifactId>maven-apt-plugin</artifactId> 
     <version>1.0.2</version> 
     <executions> 
      <execution> 
       <phase>generate-sources</phase> 
       <goals> 
        <goal>process</goal> 
       </goals> 
       <configuration> 
        <!-- Specifies the directory in which the query types are generated --> 
        <outputDirectory>target/generated-sources/querydsl</outputDirectory> 
        <!-- States that the APT code generator should look for JPA annotations --> 
        <processor>com.mysema.query.apt.jpa.JPAAnnotationProcessor</processor> 
       </configuration> 
      </execution> 
     </executions> 
    </plugin> 
</plugins> 
</build>

每當我運行mvn乾淨安裝，此異常信息時

[ERROR] diagnostic: C:\Users\users\app\app-ims\app-ims-core\src\main\java\org\app\genesis\inventory\repo\ProductRepoImpl.java:6: error: cannot find symbol 
import org.brightworks.genesis.inventory.model.QProduct; 
              ^
    symbol: class QProduct 
    location: package org.app.genesis.inventory.model

這裏是類的要點。

import com.mysema.query.jpa.impl.JPAQuery; 
import com.mysema.query.types.ConstructorExpression; 
import org.brightworks.genesis.inventory.dto.ProductDTO; 
import org.brightworks.genesis.inventory.model.QProduct; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.data.domain.Page; 
import org.springframework.data.domain.PageImpl; 
import org.springframework.data.domain.Pageable; 

import javax.persistence.EntityManager; 
import java.util.List; 

    /** 
    * 
    */ 
    public class ProductRepoImpl implements ProductRepoCustom { 

     @Autowired 
     private EntityManager em; 

     @Override 
     public Page<ProductDTO> search(String term, Pageable pageable) { 
      JPAQuery query = new JPAQuery(em); 
      QProduct product = QProduct.product;

模型和回購在同一個項目中，但是沒有生成Q實體類。我該如何解決？

來源

2015-04-04 user962206

爲什麼要同時使用Maven的處理器插件和Maven的的apt-插件？他們都爲mvn提供APT支持。其中一個應該就夠了。 – 2015-04-05 19:34:33

@TimoWestkämper因爲我使用的框架之一，MapStruct需要它。 – user962206 2015-04-06 01:58:43

你的mvn apt插件有衝突。你有兩個，你只需要一個。只是相應地改變它們。這是一個例子。

<plugin> 
     <groupId>org.bsc.maven</groupId> 
     <artifactId>maven-processor-plugin</artifactId> 
     <version>2.2.4</version> 
     <configuration> 
      <defaultOutputDirectory> 
       ${project.build.directory}/generated-sources 
      </defaultOutputDirectory> 
      <processors> 
       <processor>org.mapstruct.ap.MappingProcessor</processor> 
       <processor>com.mysema.query.apt.jpa.JPAAnnotationProcessor</processor> 
      </processors> 
     </configuration> 
     <executions> 
      <execution> 
       <id>process</id> 
       <phase>generate-sources</phase> 
       <goals> 
        <goal>process</goal> 
       </goals> 
      </execution> 
     </executions> 
     <dependencies> 
      <dependency> 
       <groupId>org.mapstruct</groupId> 
       <artifactId>mapstruct-processor</artifactId> 
       <version>${mapstruct.version}</version> 
      </dependency> 
     </dependencies> 
    </plugin>

來源

2015-04-06 14:54:15 KyelJmD

它也可以做相反，使用apt-maven-plugin如果你願意的話，配置是非常相似：

<plugin> 
    <groupId>com.mysema.maven</groupId> 
    <artifactId>apt-maven-plugin</artifactId> 
    <version>1.1.3</version> 
    <dependencies> 
     <dependency> 
      <groupId>com.mysema.querydsl</groupId> 
      <artifactId>querydsl-apt</artifactId> 
      <version>${querydsl.version}</version> 
     </dependency> 
     <dependency> 
      <groupId>org.mapstruct</groupId> 
      <artifactId>mapstruct-processor</artifactId> 
      <version>${mapstruct.version}</version> 
     </dependency> 
    </dependencies> 
    <executions> 
     <execution> 
      <phase>generate-sources</phase> 
      <goals> 
       <goal>process</goal> 
      </goals> 
      <configuration> 
       <outputDirectory>${project.build.directory}/generated-sources</outputDirectory> 
       <processors> 
        <processor>com.mysema.query.apt.jpa.JPAAnnotationProcessor</processor> 
        <processor>org.mapstruct.ap.MappingProcessor</processor> 
       </processors> 
      </configuration> 
     </execution> 
    </executions> 
</plugin>

來源

2016-03-19 23:34:22

Spring數據Jpa查詢DSL Q Entityclasses not generating

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