jsp输出中文页面乱码，中文提交后文本框里乱码，后台中文变乱码，全解决

一个过滤器，jsp输出中文页面乱码，中文提交后文本框里乱码，后台中文变乱码全部搞定

过滤器为下：

FilterEncoding

packagestruts.form;

importjava.io.IOException;
importjavax.servlet.Filter;
importjavax.servlet.FilterChain;
importjavax.servlet.FilterConfig;
importjavax.servlet.ServletException;
importjavax.servlet.ServletRequest;
importjavax.servlet.ServletResponse;
publicclassFilterEncodingimplementsFilter
{

protectedStringencoding;//接收字符编码
protectedbooleanignore;//是否忽略大小写
protectedFilterConfigfilterConfig;//初始化配置

publicvoidinit(FilterConfigfilterConfig)throwsServletException
{
//从web.xml文件中读取encoding的值
encoding=filterConfig.getInitParameter("encoding");
//从web.xml文件中读取ignore的值
Stringvalue=filterConfig.getInitParameter("ignore");
//以下三种情况均为忽略大小写
if(value==null)
{
ignore=true;
}
elseif(value.equalsIgnoreCase("yes"))
{
ignore=true;
}
elseif(value.equalsIgnoreCase("true"))
{
ignore=true;
}
}
//doFilter方法
publicvoiddoFilter(ServletRequestrequest,ServletResponseresponse,FilterChainchain)throwsIOException,ServletException
{
if(ignore||request.getCharacterEncoding()==null)
{
//如果为空先从web.xml中得到
Stringencoding=selectEncoding(request);
if(encoding!=null)
{
//设置字符集编码
request.setCharacterEncoding(encoding);
}
}
//继续执行
chain.doFilter(request,response);
}
//得到字符编码
privateStringselectEncoding(ServletRequestrequest)
{
returnencoding;
}
publicvoiddestroy()
{

}
}

web.xml里配置

<filter>
<filter-name>encoding</filter-name>
<filter-class>
struts.form.FilterEncoding
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>gbk</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

jsp头文件

<%@pagecontentType="text/html;charset=gbk"%>

//此处的charset的值要和web.xml里的 <param-value></param-value>值一样

这样就可以在jsp输入汉字不是乱码了

如果是url的get提交参数带中文的
可以改下面这个文件，加入一个URIEncoding="GBK"
X:\Tomcat 5.5\conf\Server.xml

<Connector
port="8080"
redirectPort="8443"
minSpareThreads="25"
connectionTimeout="30"
maxThreads="150"
maxSpareThreads="75"
RIEncoding="GBK">

原文地址：http://heisetoufa.iteye.com/blog/227162