ajax + servlet中文乱码解决

参考文章：

http://www.fish888.com/Ajax-t153747 

http://blog.youkuaiyun.com/wallimn/archive/2006/11/12/1380106.aspx

js文件用GB2312编码，代码如下：

if (window.XMLHttpRequest) { // Mozilla, Safari, ...
      oBao = new XMLHttpRequest();
  } else if (window.ActiveXObject) { // IE
      oBao = new ActiveXObject("Microsoft.XMLHTTP");
  }
      str = escape(str);
     
      var mydata = "a="+str+"&type="+type+"&gotoPage="+gotoPage;
      oBao.open("POST",page,false);
      oBao.setRequestHeader("Content-Type","application/x-www-form-urlencoded")
      oBao.send(mydata);
      str=oBao.responseText;

servlet用GB18030编码，代码如下：

response.setCharacterEncoding("UTF-8");

PrintWriter out = response.getWriter();

String v="汉字";

out.println(v);