本文介绍了解决JSP页面间中文参数传递时出现乱码的方法，包括设置请求字符编码及使用过滤器统一处理。
GBK编码JPS页面a.jsp：
<%@page contentType="text/html;charset=gbk"%>
<%@page import="java.util.*"%>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<body>
<form action="http://localhost:8080/b.jsp" method="post">
<input name = "title" value="中文乱码测试" />
<input type="submit">
</form>
</body>
UTF8编码JSP页面b.jsp:
<%@page contentType="text/html;charset=utf-8" %>
<%@page import="java.util.*"%>
<%@page import="org.apache.commons.io.*"%>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<% String title = request.getParameter("title"); %>
<body>
</body>
</html>
在b.jsp页面通过request获取title参数值出现中文乱码问题，如果不指定request参数的编码方式则默认
使用ISO-8859-1编码，因此为了获取正确的中文内容需要使用request.setCharacterEncoding("GBK");
注意： 在web.xml中使用过滤器对request参数集合进行编码的问题：
<filter>
<filter-name>webwork</filter-name>
<filter-class>
com.opensymphony.webwork.dispatcher.FilterDispatcher
</filter-class>
</filter>
<filter-mapping>
<filter-name>webwork</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>
<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>*.jsp</url-pattern>
</filter-mapping>
<%@page contentType="text/html;charset=gbk"%>
<%@page import="java.util.*"%><html><meta http-equiv="Content-Type" content="text/html; charset=gbk"><body><form action="http://localhost:8080/b.jsp" method="post"> <input name = "title" value="中文乱码测试" /> <input type="submit"></form></body><%@page contentType="text/html;charset=utf-8" %><%@page import="java.util.*"%><%@page import="org.apache.commons.io.*"%><html> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/><% String title = request.getParameter("title"); %><body></body></html>使用ISO-8859-1编码，因此为了获取正确的中文内容需要使用request.setCharacterEncoding("GBK");
注意： 在web.xml中使用过滤器对request参数集合进行编码的问题：
<filter> <filter-name>webwork</filter-name> <filter-class> com.opensymphony.webwork.dispatcher.FilterDispatcher </filter-class> </filter> <filter-mapping> <filter-name>webwork</filter-name> <url-pattern>*.jsp</url-pattern> </filter-mapping> <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>*.jsp</url-pattern> </filter-mapping>
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