Spring MVC Controller参数接收方式

SpringMvc 中参数有多种接收方式：@RequestBody @RequestParam @RequestHeader @PathVariable etc.

下面详细测试，各种参数接收方式适合的场景

 
  
      
 //    Content-Type    application/x-www-form-urlencoded            
      
 //    Accept    */*            
      
 //    Accept-Encoding    gzip, deflate, br            
      
 //    Accept-Language    zh-CN,zh;q=0.8,en;q=0.6            
      
 //    param1=param1&param2=param2            
      
 @RequestMapping("test/testParam1")            
      
 @ResponseBody            
      
 public String testParam1(HttpServletRequest request, String param1, String param2){            
      
 Map<String, String> result = new HashMap<String, String>();            
      
 result.put("param1", param1);            
      
 result.put("param2", param2);            
      
 return JSON.toJSONString(result);            
      
 }            
      
  
      
  
      
 //    Content-Type    application/x-www-form-urlencoded            
      
 //    Accept    */*            
      
 //    Accept-Encoding    gzip, deflate, br            
      
 //    Accept-Language    zh-CN,zh;q=0.8,en;q=0.6            
      
 //    param1=param1&param2=param2            
      
 //    操作正常但是用RAW的方式请求，就会给出Required String parameter 'param1' is not present的异常            
      
 //    原因是请求里面Content-Type: application/json 而不是 application/x-www-form-urlencoded            
      
 //    参数的形式是一个json字符串，requestparam 无法解析            
      
  
      
 @RequestMapping("test/testRequestParam")            
      
 @ResponseBody            
      
 public String testRequestParam(@RequestParam String param1, @RequestParam String param2){            
      
 Map<String, String> result = new HashMap<String, String>();            
      
 result.put("param1", param1);            
      
 result.put("param2", param2);            
      
 return JSON.toJSONString(result);            
      
 }            
      
  
      
  
      
 //    Content-Type: application/json            
      
 //如果用requestbody的形式接收，请求体里面所有的所有内容会绑定到param1中            
      
 //可以看一下            
      
  
      
 @RequestMapping("test/testRequestBody")            
      
 @ResponseBody            
      
 public String testRequestBody(@RequestBody String param1){            
      
 Map<String, String> result = new HashMap<String, String>();            
      
 result.put("param1", param1);            
      
 return JSON.toJSONString(result);            
      
 }            
      
  
      
 @RequestMapping("test/testRequestbodyMap")            
      
 @ResponseBody            
      
 public String testRequestbodyMap(@RequestBody Map map){            
      
 Map<String, Object> result = new HashMap<String, Object>();            
      
 result.put("param1", map.get("param1"));            
      
 return JSON.toJSONString(result);            
      
 }            
      
  
      
 //匹配路径，作为参数            
      
 @RequestMapping("test/{param1}/{param2}")            
      
 @ResponseBody            
      
 public String testPathVariable(@PathVariable String param1, @PathVariable String param2){            
      
 Map<String, String> result = new HashMap<String, String>();            
      
 result.put("param1", param1);            
      
 result.put("param2", param2);            
      
 return JSON.toJSONString(result);            
      
 }            
      
  
      
 //    param2: parameter2            
      
 //    param1: parameter1            
      
 //    Content-Type: application/json            
      
 //    Accept: */*            
      
 //    Accept-Encoding: gzip, deflate, br            
      
 //    Accept-Language: zh-CN,zh;q=0.8,en;q=0.6            
      
  
      
 @RequestMapping("test/testRequestHeader")            
      
 @ResponseBody            
      
 public String testRequestHeader(@RequestHeader String param1, @RequestHeader String param2){            
      
 Map<String, String> result = new HashMap<String, String>();            
      
 result.put("param1", param1);            
      
 result.put("param2", param2);            
      
 return JSON.toJSONString(result);            
      
 }            
      
  
      
 //    Content-Type: application/json            
      
 //    Accept: */*            
      
 //    Accept-Encoding: gzip, deflate, br            
      
 //    Accept-Language: zh-CN,zh;q=0.8,en;q=0.6            
      
 //    Cookie: JSESSIONID=1231; Hm_lvt_82116c626a8d504a5c0675073362ef6f=1491372429            
      
 @RequestMapping("test/testCookieValue")            
      
 @ResponseBody            
      
 public String testCookieValue(@CookieValue(value = "JSESSIONID") String param1){            
      
 Map<String, String> result = new HashMap<String, String>();            
      
 result.put("param1", param1);            
      
 return JSON.toJSONString(result);            
      
 }