ajax url带参乱码

var searchCatentry = function(id){
var label = $("#label").val();
var url = contextpath + "catentry/search.action?catGroupId="
+id+"&searchType=search2"+"&label="+label;
$.post(url,function(data){
$("#searchFormArea").html(data);
});

}

label传到后台中文乱码，加上处理后如下：

var searchCatentry = function(id){
var label = $("#label").val();
var url = contextpath + "catentry/search.action?catGroupId="
+id+"&searchType=search2"+"&label="+encodeURIComponent(label);
$.post(url,function(data){
$("#searchFormArea").html(data);
});
}

后台：if(request.getParameter("label") != null && !"".equals(request.getParameter("label")) ){
String showLabel = request.getParameter("label").trim();
showLabel = this.decodeStringByUtf8(showLabel);
request.setAttribute("label",showLabel);
}

this.decodeStringByUtf8(showLabel);函数如下：

/** * 以UTF8解字符编码，防止中文乱码 * @author raoanhui */ final protected String decodeStringByUtf8(String s) { if (StringHelper.isEmpty(s)) return s; try { return URLDecoder.decode(s,"utf-8"); } catch (Exception e) { e.printstacktrace(); return s; } } 以上几步就可以解决中文乱码。