How to solve the problem of sending ajax garbled characters

Solution to sending ajax garbled characters: 1. Check whether the character interceptor is configured in web.xml; 2. Modify the jsp page to utf-8; 3. Change the ajax request to a post request.

The operating environment of this article: Windows 7 system, jquery version 3.2.1, Dell G3 computer.

How to solve the problem of sending ajax garbled characters?

Solution to the problem of Chinese garbled characters when JQuery sends an ajax request:

Troubleshoot the project first:

1. Whether it is configured in web.xml Character interceptor

<filter>
  <filter-name>encodingFilter</filter-name>
  <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  <init-param>
    <param-name>encoding</param-name>
    <param-value>utf-8</param-value>
  </init-param>
  <init-param>
    <param-name>forceEncoding</param-name>
    <param-value>true</param-value>
  </init-param>
</filter>
<filter-mapping>
  <filter-name>encodingFilter</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>

2. Is the jsp page utf-8

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

By the way, I also add this tag and send utf-8 uniformly, but I heard it is a bit tasteless

<meta http-equiv=”content-type” content=”text/html; charset=UTF-8″ />

3. After troubleshooting, change the ajax request to a post request

$.ajax({
   url:"list",
   type:'post',
   data:{
     param:recode,
     city:locationActive
   },
   dataType: 'json',//要求服务器返回的是json
   success:function(res){}

Recommended learning: "ajax video tutorial"

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