js.ajax等传参乱码的解决

1.网页编码设置为utf-8
  <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
2.服务器设置为utf-8
  如tomcat的server.xml中
  <Connector port="8080" protocol="HTTP/1.1"
        connectionTimeout="20000"
        redirectPort="8443" 
        URIEncoding="UTF-8"/>
  设置为utf-8
3.自定义过滤器设置字符编码为utf-8
  request 和response都设置为utf-8
  setCharacterEncoding("UTF-8");
  如下：

import java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter;
public class LifeOnlineFilter extends StrutsPrepareAndExecuteFilter {
  
	@Override
	public void doFilter(ServletRequest req, ServletResponse res,
			FilterChain chain) throws IOException, ServletException {
		
		HttpServletRequest request=(HttpServletRequest) req;
		String uri=request.getRequestURI();
	    req.setCharacterEncoding("UTF-8");
	    res.setCharacterEncoding("UTF-8");
		if(uri.indexOf("Androidservice")!=-1){
			System.out.println("FilterDispetor.doFilter():true");
			chain.doFilter(req, res);
		}else{
			super.doFilter(req, res, chain);
		}
	}
}
       

4.链接数据库设置为utf-8
<property name="url" value="jdbc:mysql://localhost:3306/lifeonline?useUnicode=true&amp;characterEncoding=UTF-8">
</property>

5.把数据库编码设置为utf-8
  如mysql数据如，在配置的时候勾选上utf-8原先mysql默认的为latin
  总的来说只要把各个层次的编码设置为一致就不会乱码，
  有些地方说设置成gbk不乱码，最好用utf-8因为其几乎支持全世界的所有语言