前台js代码块中对各个变量进行编码处理如下: 

var typeselect = form2.typeselect.value;  //var typeselect = document.getElementById('typeselect').value;  //怎么获得值得自己用自己的方式, 不一定要像我酱紫.. 

typeselect=encodeURI(typeselect); 

typeselect=encodeURI(typeselect);  form2.action="xxxx.do?typeselect="+typeselect;  form2.submit(); 

在后台进行获取: 

import java.net.URLDecoder; 

if (request.getParameter("typeselect") != null) { 

    typeid = request.getParameter("typeselect");      typeid = URLDecoder.decode(typeid, "utf-8");  }