Liferay7 BPM门户开发之34: liferay7对外服务类生成（RestService Get Url）

在liferay7中开发不依赖Service Builder的对外服务类，非常简洁，只需要2点注解：

• 在类的前部定义：

　　@ApplicationPath("/PathXXX")

• 方法前定义：

　　@GET
　　@Path("/ActionXXX")
　　@Produces("text/plain")

例子：得到注册用户

import com.liferay.portal.kernel.model.User;
import com.liferay.portal.kernel.service.UserLocalService;
import java.util.Collections;
import java.util.Set;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Application;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;

@ApplicationPath("/allUsers")
@Component(
    immediate = true, property = {"jaxrs.application=true"},
    service = Application.class
)
public class UsersRestService extends Application {

    @Override
    public Set<Object> getSingletons() {
        return Collections.singleton((Object)this);
    }

    @GET
    @Path("/list")
    @Produces("text/plain")
    public String getAllUsers() {
        StringBuilder result = new StringBuilder();

        for (User user : _userLocalService.getUsers(-1, -1)) {
            result.append(user.getFullName()).append(",\n");
        }
        return result.toString();
    }

    @Reference
    public void setUserLocalService(UserLocalService userLocalService) {
        _userLocalService = userLocalService;
    }

    private UserLocalService _userLocalService;

}

osgi语法真是简洁。