一般JSP中漢字傳到后臺(tái)顯示亂碼的解決方案大致分為：

1.web.xml設(shè)置字符編碼過濾器，后臺(tái)java代碼：

package com.sls.pub.utils;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class ServletFilter
 implements Filter
{
protected String encoding = null;

protected FilterConfig filterConfig = null;

protected boolean ignore = true;

public void destroy()
 {
this.encoding = null;
this.filterConfig = null;
}

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
 throws IOException, ServletException
 {
if ((this.ignore) || (request.getCharacterEncoding() == null)) {
String encoding = selectEncoding(request);
if (encoding != null) {
request.setCharacterEncoding(encoding);
}
}

chain.doFilter(request, response);
}

public void init(FilterConfig filterConfig)
 throws ServletException
 {
this.filterConfig = filterConfig;
this.encoding = filterConfig.getInitParameter("encoding");
String value = filterConfig.getInitParameter("ignore");
if (value == null)
this.ignore = true;
else if (value.equalsIgnoreCase("true"))
 this.ignore = true;
else if (value.equalsIgnoreCase("yes"))
 this.ignore = true;
else
this.ignore = false;
}

protected String selectEncoding(ServletRequest request)
 {
return this.encoding;
}
}

web.xml編寫過濾器(此處允許GBK編碼)：

<filter>     
<filter-name>EncodingFilter</filter-name>     
<display-name>EncodingFilter</display-name>          <description>EncodingFilter</description>     
<filter-class>com.sls.pub.utils.ServletFilter</filter-class>     
<init-param>       
<param-name>encoding</param-name>       
<param-value>GBK</param-value>     
</init-param>   </filter>

2.設(shè)置IDE軟件（eg:myeclipse）的編碼，這個(gè)方法大家可以百度一下，此處略去。
3.第三個(gè)也是大家容易忽略的問題，這里細(xì)講一下。
我遇到的問題是，我的整個(gè)工程編碼格式是GBK，JSP中在URL拼接路徑訪問時(shí)傳遞的漢字仍正常，傳到后臺(tái)后通過reqest.getParameter("")獲取該字段后變成了亂碼。我本地使用的myeclipse+tomcat。但是工程在linux環(huán)境部署的websphere應(yīng)用服務(wù)器中沒有亂碼問題。我檢查過myeclipse編碼設(shè)置，然后定位到可能是應(yīng)用服務(wù)器不同導(dǎo)致的。然后我去查tomcat的相關(guān)資料，最后發(fā)現(xiàn)tomcat的默認(rèn)編碼是iso8859-1。如果要改變其默認(rèn)的編碼，需要在tomcat的server.xml中，修改這段代碼：

<Connector port="8888" protocol="HTTP/1.1"                connectionTimeout="20000"                
redirectPort="8443" />

修改為：

 <Connector port="8888" protocol="HTTP/1.1"                connectionTimeout="20000"                
redirectPort="8443"  
URIEncoding="GBK" />

問題解決...