注释类型不适用于此类声明

Question

package com;

/**
 *
 * @author sunny
 */
import javax.ejb.Local;

public interface BookService {

    @Local   //error here (annotation type not applicable to this kind of declaration)
    Book createOrUpdate(Book book);
    void remove(Book book);
    Book find(Object id);
}

Answer 1

编写本地界面，如下所示：

package com;

public interface BookServiceLocal {

    Book createOrUpdate(Book book);
    void remove(Book book);
    Book find(Object id);
}

然后通过注释将本地接口添加到EJB类：

package com;

import javax.ejb.Local;

@Stateless //Or any other type of EJB you want
@Local (BookServiceLocal.class) 
public BookService {

    Book createOrUpdate(Book book){return null;}
    void remove(Book book){}
    Book find(Object id){return null;}
}