6

我正在使用 JavaPoet 编写代码生成器,需要在类上添加注释

例如 :

package some.package

import org.hibernate.annotations.CacheConcurrencyStrategy;
import javax.persistence.Entity;
import javax.persistence.Cache

@Entity
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class SomeClass {
}

我的代码如下所示:

TypeSpec spec = TypeSpec
  .classBuilder("SomeClass")
  .addAnnotation(Entity.class)
  .addAnnotation(AnnotationSpec.builder(Cache.class)
     .addMember("usage", "$L", CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
     .build())
  .build()

此代码生成类,但生成的代码缺少 CacheConcurrencyStrategy 的导入语句。如何生成代码以便输出所有必需的代码?

4

1 回答 1

10

尝试这个:

TypeSpec spec = TypeSpec
  .classBuilder("SomeClass")
  .addAnnotation(Entity.class)
  .addAnnotation(AnnotationSpec.builder(Cache.class)
      .addMember("usage", "$T.$L", CacheConcurrencyStrategy.class,
          CacheConcurrencyStrategy.NONSTRICT_READ_WRITE.name())
      .build())
  .build()

$T标识枚举类和枚举$L常量。

于 2015-08-25T03:58:59.823 回答