如何为特定的@RequestMapping启用greedy @PathVariable？

Question

我尝试通过rest服务启用目录浏览。它的定义如下：

@RequestMapping(path="ls/{path:.+}", method = RequestMethod.GET)
public List<String> getDirectoryListing(@PathVariable("path") String path) throws IOException {
  // ...
}

但是，如果我使用类似目录的定义，PathVariable {path:.+}会带来问题。例如,

$ curl http://localhost:8080/fileRepo/ls/dir/subdir
                                         \___ ___/
                                             V 
                                          {path:.+} 

将导致

{
 "timestamp":1485690489272,
 "status":404,"error":"Not Found",
 "message":"No message available",
 "path":"/dataset/ls/processed/dir1/subdir"
 }

并将调试消息放在控制台上

s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /files/ls/dir1/subdir
s.w.s.m.m.a.RequestMappingHandlerMapping : Did not find handler method for [/files/ls/dir1/subdir]
o.s.w.s.handler.SimpleUrlHandlerMapping  : Matching patterns for request [/files/ls/dir1/subdir] are [/**]
o.s.w.s.handler.SimpleUrlHandlerMapping  : URI Template variables for request [/files/ls/dir1/subdir] are {}

所以。如何告诉RequestMappingHandlerMapping ls/{path:.+}应该全部解析为getDirectoryListing

Answer 1

如果在path变量中发送dir/subdir，则需要转义path变量中的"/“字符。您需要在请求处理程序级别对url的path变量部分进行编码，并对进行解码。