关于request.getInputStream()接参流程

1  @RequestMapping(value = PROXY_URL, method = RequestMethod.POST, produces = PRODUCES)
2     public Object proxy(final HttpServletRequest request, final HttpServletResponse response) {
3 　　　　　　String json = "";
4                 json = new String(readInputStream(request.getInputStream()), "UTF-8");  

5     }

 1     public static byte[] readInputStream(InputStream inStream) throws Exception {
 2         ByteArrayOutputStream outSteam = new ByteArrayOutputStream();
 3         byte[] buffer = new byte[1024];
 4         boolean var3 = false;
 5 
 6         int len;
 7         while((len = inStream.read(buffer)) != -1) {
 8             outSteam.write(buffer, 0, len);
 9         }
10 
11         outSteam.close();
12         inStream.close();
13         return outSteam.toByteArray();
14     }