一、直接把表單的參數寫在Controller相應的方法的形參中,適用於get方式提交,不適用於post方式提交。若"Content-Type"="application/x-www-form-urlencoded",可用post提交spring
url形式:http://localhost:8080/demo/addUser1?username=lixiaoxi&password=111111 提交的參數須要和Controller方法中的入參名稱一致。(參數少的時候適用,涉及password仍是用post方式吧)json
/** * 直接把表單的參數寫在Controller相應的方法的形參中 * @param username * @param password * @return */ @RequestMapping("/addUser1") public String addUser1(String username,String password) { System.out.println("username is:"+username); System.out.println("password is:"+password); return "demo/index"; }
二、經過HttpServletRequest接收,post方式和get方式均可以。(通用,統一,很基礎)
/** * 經過HttpServletRequest接收 * @param request * @return */ @RequestMapping("/addUser2") public String addUser2(HttpServletRequest request) { String username=request.getParameter("username"); String password=request.getParameter("password"); System.out.println("username is:"+username); System.out.println("password is:"+password); return "demo/index"; }
三、經過一個bean來接收,post方式和get方式均可以。(Spring MVC中經常使用的方法)
/** * 經過一個bean來接收 * @param user * @return */ @RequestMapping("/addUser3") public String addUser3(UserModel user) { System.out.println("username is:"+user.getUsername()); System.out.println("password is:"+user.getPassword()); return "demo/index"; }
四、使用@ModelAttribute註解獲取POST請求的FORM表單數據
/** * 使用@ModelAttribute註解獲取POST請求的FORM表單數據 * @param user * @return */ @RequestMapping(value="/addUser5",method=RequestMethod.POST) public String addUser5(@ModelAttribute("user") UserModel user) { System.out.println("username is:"+user.getUsername()); System.out.println("password is:"+user.getPassword()); return "demo/index"; }
五、用註解@RequestParam綁定請求參數到方法入參
當請求參數username不存在時會有異常發生,能夠經過設置屬性required=false解決,例如: @RequestParam(value="username", required=false)
**** 若"Content-Type"="application/x-www-form-urlencoded",post get均可以
**** 若"Content-Type"="application/json",只適用get
/** * 用註解@RequestParam綁定請求參數到方法入參 * @param username * @param password * @return */ @RequestMapping(value="/addUser6",method=RequestMethod.GET) public String addUser6(@RequestParam("username") String username,@RequestParam("password") String password) { System.out.println("username is:"+username); System.out.println("password is:"+password); return "demo/index"; }
六、用request.getQueryString() 獲取spring MVC get請求的參數,只適用get請求
@RequestMapping(value="/addUser6",method=RequestMethod.GET) public String addUser6(HttpServletRequest request) {
System.out.println("username is:"+request.getQueryString());
return "demo/index"; }