传递中文参数后台获取出现乱码解决方法

更改 D:\Tomcat\conf\server.xml，指定浏览器的编码格式为“简体中文”：

方法是找到 server.xml 中的

<Connector port="8080" maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
    enableLookups="false" redirectPort="8443" acceptCount="100"
    connectionTimeout="20000" disableUploadTimeout="true" URIEncoding='GBK' />

添加加粗部分。

添加filter类

package filters;

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 SetCharacterEncoding implements Filter {
    protected FilterConfig filterConfig = null;
    protected boolean ignore = true;
    String encoding="";
    public void destroy() {

        this.encoding = null;
        this.filterConfig = null;

    }
    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain chain)
 throws IOException, ServletException {
        if (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);

    }

}

配置web.xml

加入 

  <filter>
        <filter-name>Set Character Encoding</filter-name>
        <filter-class>filters.SetCharacterEncoding</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>GBK</param-value>
        </init-param>
  </filter>
  <filter-mapping>
        <filter-name>Set Character Encoding</filter-name>
        <url-pattern>/*</url-pattern>
  </filter-mapping>

修改jsp页面编码为GBK：

<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>

我用的是struts1.2！