get传参乱码问题 (js to java)

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");
}