html页面发送请求处理json

通过JS方式发送请求

<a href="" onclick="del()" >删除</a>

<script type="text/javascript">
function del(){
if(window.confirm("是否删除？")){
$.ajaxSetup({
async : false
});
var id = document.getElementById("pid").value;
var url = "${contextPath}/publishEdit/delMsg";
var paras = {id : id};
$.get(url,paras,function(data){
if(data.RETCODE ==="1"){
alert("删除成功！")
window.location = "${contextPath}/published";
}else{
alert("删除失败!");
return;
}
});
}else{
window.location = "${contextPath}/published";
}
}
</script>

public void delMsg(){
String id = getPara("id");
boolean isDel = publishService.delContent(id);
Record r = new Record();
if(isDel){
r.set("retcode", "1");
}else {
r.set("retcode", "0");
}
renderJson(r.toJson());
}