UriInfo

要获取有关用户代理用于访问资源的 URI 的信息，可以将 @Context 参数注释与 UriInfo 参数一起使用。UriInfo 对象有一些方法可用于获取 URI 的不同部分。

//server is running on https://localhost:8080,
// webapp is at /webapp, servlet at /webapp/servlet
@Path("class")
class Foo {
    
    @GET
    @Path("resource")
    @Produces(MediaType.TEXT_PLAIN)
    public Response getResource(@Context UriInfo uriInfo) {
        StringBuilder sb = new StringBuilder();
        sb.append("Path: " + uriInfo.getPath() + "\n");
        sb.append("Absolute Path: " + uriInfo.getAbsolutePath() + "\n");
        sb.append("Base URI: " + uriInfo.getBaseUri() + "\n");
        sb.append("Request URI: " + uriInfo.getRequestUri() + "\n");
        return Response.ok(sb.toString()).build();
    }
}

输出到 https://localhost:8080/webapp/servlet/class/resource：

Path: class/resource
Absolute Path: https://localhost:8080/webapp/servlet/class/resource#
Base URI: https://localhost:8080/webapp/servlet/
Request URI: https://localhost:8080/webapp/servlet/class/resource