中文乱码的解决方案

添加过滤器，过滤器是在web.xml中配置

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd"
  5.          version="5.0">
  6.     <!--中文编码的过滤器配置(放在最前面)-->
  7.     <filter>
  8.         <filter-name>encode</filter-name>
  9.         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  10.         <!--
  11.         参数配置:
  12.             private String encoding;
  13.            private boolean forceRequestEncoding = false;
  14.            private boolean forceResponseEncoding = false;
  15.         -->
  16.         <init-param>
  17.             <param-name>encoding</param-name>
  18.             <param-value>UTF-8</param-value>
  19.         </init-param>
  20.         <init-param>
  21.             <param-name>forceRequestEncoding</param-name>
  22.             <param-value>true</param-value>
  23.         </init-param>
  24.         <init-param>
  25.             <param-name>forceResponseEncoding</param-name>
  26.             <param-value>true</param-value>
  27.         </init-param>
  28.     </filter>
  29.     <filter-mapping>
  30.         <filter-name>encode</filter-name>
  31.         <url-pattern>/*</url-pattern>
  32.     </filter-mapping>
  33.     <servlet>
  34.         <servlet-name>springmvc</servlet-name>
  35.         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  36.         <init-param>
  37.             <param-name>contextConfigLocation</param-name>
  38.             <param-value>classpath:springmvc.xml</param-value>
  39.         </init-param>
  40.     </servlet>
  41.     <servlet-mapping>
  42.         <servlet-name>springmvc</servlet-name>
  43.         <url-pattern>/</url-pattern>
  44.     </servlet-mapping>
  45. </web-app>

测试

你可以把之前的get方法改成post请求，但是之前的动态占位符提交的时候输出的结果是请求成功,name=??????,age=115,所以你也可以去看看。

点击超链接后得到的结果:

请求成功,name=李四,age=115

说明过滤器有效