JAX-RS - 两个类可以具有相同的 @Path 标识符吗？
我有一个重定向到特定 URI 的 Web 应用程序：比方说 /service/library。在另一个包中，我有一个 jaxrs 服务器，用于侦听 URI 中的 /service，并定义一些 bean 来处理请求。那里已经有相当多的 Bean，并且已经实现了其中一个类来处理 /service/library 的请求。我正在尝试创建一个新类，它也处理 /service/library 的请求，但具有不同的绝对 URI 路径，例如：/service/library/mynewlibrary。我的问题是，是否可以在两个类中定义相同的 @Path 标识符，或者它们必须是唯一的，换句话说，我是否需要为我的新类使用像 /service/mylibrary 这样的 URI类实现而不是实现也使用相同 @Path 标识符的第二个类？我对 JAX-RS 还很陌生，所以我希望我的问题有意义！
谢谢！
I have a webapp that redirects to a particular URI: let's say /service/library. In another bundle, I have a jaxrs server that listens for /service in the URI, and defines some beans to handle the request. There are quite a few beans there already, and one of the classes is already implemented to handle requests for /service/library. I am trying to create a new class that also handles requests for /service/library, but with a different absolute URI path, for example: /service/library/mynewlibrary. My question is, is it possible to define the same @Path identifier in two classes, or must they be unique, in other words, will I need to use a URI like /service/mylibrary for my new class implementation instead of implementing a second class that also uses the same @Path identifier? I am pretty new to JAX-RS, so I hope my question makes sense!
Thanks!
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可以有两个与 URI 匹配的 @Path 注释。在您的情况下，如果 servlet-mapping 是
service，您可能有@Path("/library")和@Path("library/mynewlibrary")< /代码>。当请求到达时，匹配的路径按降序排序，因此当带有
/service/library/mynewlibrary的请求到达时，应该调用第二个类。It's possible to have two @Path annotations that match the URI. In your case, if servlet-mapping is
service, you may have@Path("/library")and@Path("library/mynewlibrary").When request arrives, the matching paths are sorted in descending order, so the second class should be called, when a request with
/service/library/mynewlibraryarrives.很可能有两个方法具有相同的
@Path注释，例如，如果它们通过其他方式（例如 HTTP 方法或@Consumes注释）进行区分。类上的@Path充当类方法上的@Path的默认/根。此外，如果一条路径位于另一条路径“之内”，那根本不是问题。 JAX-RS 指定使用可能的最具体的匹配。 （我宁愿不这样做，而是让“外部”类在适当的部分匹配上返回对“内部”类的引用，以便每条路径都有一条可追踪的责任路线，肯定会导致单个类。不过，这需要一种相当不同的方式来排列@Path注释。）但是，如果您最终得到了可以服务相同传入请求的两种方法，那么您就会遇到冲突，并且 JAX- RS 实现可以自由选择使用哪一个（以依赖于实现的方式）。这可能不是您想要的，因为计算机在自由选择时往往会做出错误的决定。
It's most certainly possible to have two methods with the same
@Pathannotation, e.g., if they're distinguished by other means (such as HTTP method or@Consumesannotation). The@Pathon a class acts as a default/root for the@Paths on the class's methods. Moreover, it's not a problem at all if you've got one path that is “within” another; JAX-RS specifies that the most specific match possible is used. (I prefer to not do it that way, instead having the “outer” class return a reference to the “inner” class on a suitable partial match, so that every path has a traceable route to responsibility that definitely leads to a single class. That requires a fairly different way of arranging the@Pathannotations though.)But if you've ended up with two methods that can serve the same incoming request, you've got a clash and the JAX-RS implementation will be free to pick which one to use (in an implementation-dependent manner). That's probably not what you want, as computers tend to make bad decisions when given a free choice.
您可以使用以下配置实现拥有 /service/library/mynewlibrary 的目标。
在现有的类中，您在类级别配置了 /service/library，因此您可以在要添加的新类中在类级别配置 /service，然后在方法级别配置 /library/mynewlibrary。
这样，两个班级就不会有相同的路径，并且您的目标也达到了。我尝试过这个并且有效。
You can achieve your goal to have /service/library/mynewlibrary using below configuration.
In your existing class you have /service/library configured at class level so you can configure /service at class level in new class you are adding and then at method level configure /library/mynewlibrary.
This way it will not have same path for both classes and your goal is also achieved. I tried this and it works.