Request/Response paramters in spring method

• HttpSession
• @PathVariable annotated parameters for access to URI template variables.

  @RequestMapping(value="/owners/{ownerId}", method=RequestMethod.GET)
  public String findOwner(@PathVariable String ownerId, Model model) {
  Owner owner = ownerService.findOwner(ownerId);  
  model.addAttribute("owner", owner);  
  return "displayOwner"; 
  }
  

• @RequestHeader annotated parameters for access to specific Servlet request HTTP headers.
• @RequestBody annotated parameters for access to the HTTP request body.

  @RequestMapping(value = "/something", method = RequestMethod.PUT)
  public void handle(@RequestBody String body, Writer writer) throws IOException {
  writer.write(body);
  }
  

• @RequestPart annotated parameters for access to the content of a “multipart/form-data” request part. ``` @RequestMapping(value=”/someUrl”, method = RequestMethod.POST) public String onSubmit(@RequestPart(“meta-data”) MetaData metadata, @RequestPart(“file-data”) MultipartFile file) { // …

}

* **HttpEntity<?>** parameters for access to the Servlet request HTTP headers and contents.

@RequestMapping(“/something”) public ResponseEntity handle(HttpEntity<byte[]> requestEntity) throws UnsupportedEncodingException { String requestHeader = requestEntity.getHeaders().getFirst("MyRequestHeader")); byte[] requestBody = requestEntity.getBody(); // do something with request header and body

HttpHeaders responseHeaders = new HttpHeaders(); responseHeaders.set(“MyResponseHeader”, “MyValue”); return new ResponseEntity("Hello World", responseHeaders, HttpStatus.CREATED); } ```