一个关于乱码的问题，找的很久都没有有效的解决

[mgslovedreamsgogo]

用STRUSTS，在一个文本筐中输入一个汉字，但是发现在action中这个汉字是乱码，这样就不能操作数据库了，麻烦帮忙解决！！
谢谢

[寄居蟹]

String str=new String(para.getBytes("8859_1"),"gb2312");
你用这句试下看

[miaomiao_0316]

可以设置一个过滤类，如下：
package com.comment;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.IOException;

public class CharacterEncodingFilter implements Filter
{
protected FilterConfig filterConfig = null;
protected String encoding = "";

public void init(FilterConfig filterConfig) throws ServletException
{
this.filterConfig = filterConfig;
this.encoding = filterConfig.getInitParameter("encoding");

}

public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException
{
if(encoding != null)
servletRequest.setCharacterEncoding(encoding);
filterChain.doFilter(servletRequest, servletResponse);
}

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


}


修改web.xml文件
<filter>
<filter-name>EncodingFilter</filter-name>
<filter-class>com.comment.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>GB2312</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>EncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

然后把这个类放在WEB-INF/classes/下就可以了

[acd123456]

String s = new String( oldStr.getBytes("ISO-8859-1"), "GBK");

[zgf19821202]

jcnll(我是鱼)和 miaomiao_0316(苗苗)的办法都可以

[lyhang801]

String temp1 = new String(temp.getBytes("ISO-8859-1"), "GB2312");