英文:
Cannot import javax.persistence.MapsId
问题
使用 Spring Data JPA，我想在一个实体的代码中使用 @MapsId 注解。
尽管我在实体中添加了 import javax.persistence.*;，
但我遇到了以下编译错误：
找不到符号
[ERROR] 符号: 方法 name()
[ERROR] 位置: @interface javax.persistence.MapsId
我的 pom.xml 文件如下：
<?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"
...
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>2.3.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>2.3.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.4.1210</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<version>2.3.4.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
英文:
I use Spring Data JPA and I would like to use the @MapsId annotation in the code of one of my entities
Although I put import javax.persistence.*; in my entity
I have the following compilation error :
cannot find symbol
[ERROR] symbol: method name()
[ERROR] location: @interface javax.persistence.MapsId
My pom.xml is
<?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"
...
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>2.3.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>2.3.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.4.1210</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<version>2.3.4.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
答案1
得分: 1
你正在使用 @MapsId(name = "something")，但在 @MapsId 上不存在 name。
请改用 value：@MapsId(value = "something")，或者简单地使用 @MapsId("something")。
英文:
You are using @MapsId(name = "something"), but name doesn't exist on @MapsId.
Use value instead: @MapsId(value = "something"), or simply @MapsId("something")
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