Get 请求解决中文乱码问题

【Tomcat】

   Get  发送请求时浏览器没有任何的编码，请求头Content-Type都没有值，Tomcat接收浏览器传过来的参数默认是ISO-8859-1编码

直接获取

String name = request.getParameter("name") 

//拿到的name值是乱码

设置参数的编码格式

request.setCharacterEncoding("iso-8859-1");
Sring name = request.getParameter("name");

//拿到的name值也是乱码

解决方法

String name = request.getParameter("name");
byte[] bytes = name.getBytes("iso-8859-1");
name = new String(bytes,"utf-8");
//乱码问题解决

POST 请求时Header 中Content-Type=application/x-www-form-urlencoded; charset=UTF-8，后台设置编码格式后正常

Spring 提供字符编码过滤器可以解决POST请求乱码问题

Web.xml

<filter>
    	<filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>