参数接收

• HttpServletRequest

//单个参数接收
request.getParameter("name"); 

//map接收对象
Map<String, String> parameterMap = request.getParameterMap();
String name = parameterMap.get("name");

//stream接收流
BufferedReader reader = new BufferedReader(new InputStreamReader(request.getInputStream()));
String line = "";
String body = "";
while((line = reader.readLine()) != null){
    body += line;
}

• @RequestBody 接收对象常用于Post
• @RequestParam 接收url问号后面的参数
• @PathVariable 接收url上的参数

@GetMapping("/getMessage/{message}")
public String getMessage(@PathVariable("message") String message) {
    return "";
}