带有球衣的宁静服务界面 [英] restful service interface with jersey

问题描述

我可以创建一个带有接口和实现类的 Restful 服务吗?

Can I create a restful service with interface and implementation class?

如果是，所有 JAX-RS 相关的导入都会进入接口吗?

If so, will all JAX-RS related imports go into the interface?

我正在使用 jersey2.4 和 jetty8.1.

I am using jersey2.4 and jetty8.1.

这是我的 MyService 接口:

package foo.bar; 

@Path("/abc")
public interface MyService {

     @GET
     @JSONP
     @Path("/method/{id}")
     public MyResponse getStuff(@PathParam("id") Integer id);

}

以及MyServiceImpl那个接口的实现

package foo.bar.impl;

public class MyServiceImpl implements MyService {

     public MyServiceImpl() {}

     @Override
     public MyResponse getStuff(Integer id) {
         // do stuff
         return MyResponse;
     }
}

这是 web.xml 文件:

Here's the web.xml file:

<servlet>
    <servlet-name>Scivantage REST Service</servlet-name>
    <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
    <init-param>
        <param-name>jersey.config.server.provider.packages</param-name>
        <param-value>foo.bar</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

我注册了这个服务提供程序包 (foo.bar) 但它抱怨说这个

I registered this service provider package (foo.bar) but it complains saying this

javax.servlet.ServletException: A MultiException has 1 exceptions.  They are:|1. java.lang.NoSuchMethodException: Could not find a suitable constructor in foo.bar.MyService class.

当我尝试使用实现类包(foo.bar.impl)时，它抱怨说这个

When I tried with implementation class package (foo.bar.impl), it complains saying this

I get HTTP ERROR 404; doesn't do anything else; no exceptions on console

当我同时尝试两者时 - 它抱怨与上述相同:

When I tried both -- it complains the same as above:

javax.servlet.ServletException: A MultiException has 1 exceptions.  They are:|1. java.lang.NoSuchMethodException: Could not find a suitable constructor in foo.bar.MyService class.

我做错了什么?

推荐答案

这是我经过几次试验后发现的一个解决方案(我正在使用 jetty 9 和 jersey 2.13em>): 代替注解接口(使用@Path("/abc"))，尝试注解实现类.

Here's a solution I came across after a few trials (I'm working with jetty 9 and jersey 2.13): instead of annotate the interface (with @Path("/abc")), try to annotate the implementation class instead.

我认为这很有意义，因为界面是抽象的"，不应绑定到物理路径.这样，接口就可以在不同的路径中重用.

I think this makes good sense since interface are 'abstract' and not supposed to be bound to physical paths. This way, the interface can be reused in different paths.

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