Servlet---Solve the problem of Chinese garbled characters in post requests

 @Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {// Solve the problem of Chinese garbled charactersreq.setCharacterEncoding("UTF-8");// get request parametersString username = req.getParameter("username");String password = req.getParameter("password");String hobby = req.getParameter("hobby");// use this method if there are multiple valuesString[] hobby2 = req.getParameterValues("hobby");System.out.println("username=>"+username);System.out.println("password=>"+password);System.out.println("hobby=>"+hobby);System.out.println("hobby=>"+ Arrays.toString(hobby2));}

Username:  
Password:  
Hobbies:  JavaC++ JavaScript

When our request is a post request, if there is Chinese in the form, there will be a problem of Chinese garbled characters

Of course, the solution to this problem is very simple, that is, modify the character encoding set

          req.setCharacterEncoding("UTF-8");

Attention!!!!!!

req.setCharacterEncoding("UTF-8"); This statement must be used before getting the requested parameters to achieve the effectspan>

Like the code below, there will still be garbled characters!!!!

 @Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {String username = req.getParameter("username");// Solve the problem of Chinese garbled charactersreq.setCharacterEncoding("UTF-8");// get request parametersString password = req.getParameter("password");// use this method if there are multiple valuesString[] hobby = req.getParameterValues("hobby");System.out.println("username=>"+username);System.out.println("password=>"+password);System.out.println("hobby=>"+ Arrays.toString(hobby));}