web前端——ajax提交後臺controller實現前端後臺互動(1) 傳單個引數
阿新 • • 發佈:2019-01-07
ajax傳單個引數給controller(action)
<script src="http://code.jquery.com/jquery-1.4.2.min.js"></script> <script> function del(gid) { $.ajax({ type: "post", url: "/goods/del", data: "gid="+gid, dataType:'text', //需要的是text格式 //contextType:'application/json;charset=UTF-8',這句也不需要 async: false, success:function(callbackdata){ alert("success"); }, error:function (data, status, e){ alert("error"); } }); }; </script> </head> <body> <div> <c:forEach items="${goodsList}" var="goodItem"> <div> <input onclick="del('${goodItem.id}');" type="submit" value="刪除"/> </div> </c:forEach> <div> </body>
controller中:
@RequestMapping("/del") public String del(@RequestParam("gid")long gid, Model model){ if(String.valueOf(gid)!=null &&String.valueOf(gid)!=""){ System.out.println("gid="+gid); goodsService.del(gid); } else{ System.out.print("controller del gid為空"); } List<Goods> goodsList=goodsService.findAll(); model.addAttribute("goodsList",goodsList); return "goodsList"; }
service直接呼叫dao,在此略。。。
dao中:
public void delete(long id) {
String hql="delete from Goods g where g.id="+id;
Query query=sessionFactory.getCurrentSession().createQuery(hql);
query.executeUpdate();
}