我们可以为同一个REST方法使用多个@Path注释吗？ [英] Can we have more than one @Path annotation for same REST method

问题描述

我们是否可以为同一个REST方法提供多个 @Path 注释，即执行的方法是相同的，但是在访问多个URL时执行？

Can we have more than one @Path annotation for same REST method i.e. the method executed is the same, but it is executed on accessing more than one URL?

例如：我想在 http：/上运行 searchNames（）方法/ a / b / c 和 http：// a / b 。

E.g.: I want to run the searchNames() method on both http://a/b/c and http://a/b.

推荐答案

您不能在单个方法上使用mutliple @Path 注释。它会导致重复注释语法错误。

You can't have mutliple @Path annotations on a single method. It causes a "duplicate annotation" syntax error.

但是，有多种方法可以有效地将两个路径映射到方法。

However, there's a number of ways you can effectively map two paths to a method.

@Path JAX-RS中的注释接受参数，其值可以使用正则表达式进行限制。

The @Path annotation in JAX-RS accepts parameters, whose values can be restricted using regular expressions.

此注释：

@Path（a / {parameter：path1 | path2}）

将启用该方法请求 / a / path1 和 / a / path2 。如果需要使用子路径，则转义斜杠： {a：path1 \\ / subPath1 | path2 \\ / subPath2}

would enable the method to be reached by requests for both /a/path1 and /a/path2. If you need to work with subpaths, escape slashes: {a:path1\\/subPath1|path2\\/subPath2}

或者，您可以设置重定向。这是通过定义另一个子资源在Jersey（JAX-RS的参考实现）中实现它的方法。这只是一个例子，如果你喜欢不同的处理重定向的方式，请随意使用它。

Alternatively, you could set up a redirection. Here's a way to do it in Jersey (the reference implementation of JAX-RS), by defining another subresource. This is just an example, if you prefer a different way of handling redirections, feel free to use it.

@Path("basepath")
public class YourBaseResource {

  //this gets injected after the class is instantiated by Jersey    
  @Context
  UriInfo uriInfo; 

  @Path("a/b")
  @GET
  public Responce method1(){
    return Response.ok("blah blah").build();
  }

  @Path("a/b/c")
  @GET
  public Response method2(){
    UriBuilder addressBuilder = uriInfo.getBaseUriBuilder();
    addressBuilder.path("a/b");
    return Response.seeOther(addressBuilder.build()).build();
  }

}

使用servlet过滤器重写URL

如果您经常需要这样的功能，我建议使用servlet过滤器拦截传入的请求并动态重写路径。这应该可以帮助您将所有重定向保存在一个位置。理想情况下，您可以使用现成的库。只要您对BSD没问题， UrlRewriteFilter 就可以解决问题许可证（请查看他们的谷歌代码网站了解详情）

Using a servlet filter to rewrite URLs

If you're going to need such functionality often, I suggest intercepting the incoming requests using a servlet filter and rewriting the paths on the fly. This should help you keep all redirections in one place. Ideally, you could use a ready library. UrlRewriteFilter can do the trick, as long as you're fine with a BSD license (check out their google code site for details)

另一种选择是通过在Java应用程序前设置代理来处理此问题。您可以设置Apache服务器以提供基本的缓存和重写规则，而不会使Java代码复杂化。

Another option is to handle this with a proxy set up in front of your Java app. You can set up an Apache server to offer basic caching and rewrite rules without complicating your Java code.

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