Hibernate JPA 2元模型生成器-错误“ x_无法解析为变量”

如何解决Hibernate JPA 2元模型生成器-错误“ x_无法解析为变量”

Eclipse无法识别元模型，并且总是出现错误：“ xy_无法解析为变量。我尝试了所有事情，并花了很多时间来寻找替代方案，但是以某种方式却无法奏效。

我所做的所有事情如下：

• 在pom.xml中添加依赖项
• 设置注释处理（Project> Properties> Java Compiler>注释处理）
• 设置工厂路径（>“注释处理”>“工厂路径”）
• 将生成的classes文件夹添加到类路径中，如所述here

我在定义的文件夹中也看不到生成的类。除此之外，我还正确注释了所有实体和关系。

我做错了什么？

使用元模型并发生错误的java类：

    public class ProductSpecs {

      public static Specification<Product> getProductsByFilter(String keyword,Integer categoryId,String postalCode) {
      return (root,cq,cb) -> {
        List<Predicate> predicates = new ArrayList<>();

        // join tables product,retailStore and address for correct filtering
        Join<Product,RetailStore> store = root.join(Product_.retailStore,JoinType.LEFT);
        Join<RetailStore,Address> address = store.join(RetailStore_.address,JoinType.LEFT);

        // create comparsion elements using CriteriaBuilder
        if (keyword != null) {
          Predicate keywordsearch = cb.like(cb.lower(address.get(Product_.name)),"%" + keyword.toLowerCase() + "%");
        predicates.add(keywordsearch);
        }
        if (categoryId != null) {
          Predicate categorySearch = cb.equal(address.get(Product_.categoryId),categoryId);
          predicates.add(categorySearch);
        }
        if (postalCode != null) {
          Predicate postalCodeSearch = cb.equal(address.get(Address_.postalCode),postalCode);
          predicates.add(postalCodeSearch);
        }

        // add selected predicates to where clause and build query
        return cq.where(predicates.toArray(new Predicate[0])).orderBy(cb.desc(root.get("name")))
            .getRestriction();
      };  
    }
  }

pom.xml：

<dependencies>
    <!-- thymeleaf -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>
    
    <!-- web mvc -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    
    <!-- hot swapping,disable cache for template,enable live reload -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
        <optional>true</optional>
    </dependency>
    
    <!-- test -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <groupId>org.junit.vintage</groupId>
                <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <!-- authentication and authorization -->
    <dependency>
        <groupId>io.jsonwebtoken</groupId>
        <artifactId>jjwt</artifactId>
        <version>0.9.0</version>
    </dependency>
    
    <!-- database -->
    <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>
    <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-jpamodelgen -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-jpamodelgen</artifactId>
        <version>5.3.7.Final</version>
        <scope>provided</scope>
    </dependency>
    
    <!-- lombok project -->
    <dependency>
  <groupId>org.projectlombok</groupId>
  <artifactId>lombok</artifactId>
  <version>1.18.12</version>
</dependency>
    
    <!-- security -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.thymeleaf.extras</groupId>
        <artifactId>thymeleaf-extras-springsecurity5</artifactId>
    </dependency>
    
</dependencies>

<build>
    <plugins>
        <!-- Package as an executable jar/war -->
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
      <addResources>true</addResources>
    </configuration>
        </plugin>
    </plugins>
</build>

JavaCompiler注释处理设置：

FactoryPath设置：

• 添加了外部jar hibernate-jpa-modelgen-5.3.7.Final.jar
• 添加了外部jar javax-persistence-2.0.3.jar

Java构建路径设置：