Ajax请求数据与删除数据后刷新页面
1.ajax异步请求数据后填入模态框
请求数据的按钮(HTML)
<a class="queryA" href="javascript:void(0)" onclick="query(${register.id})"> <span class="glyphicon glyphicon-search"></span></a>
ajax异步请求数据后给id为queryInfo的模态框赋值并弹出模态框(JS)
//查询单个 function query(id) { $.ajax({ url : "/small/productServlet", async : true, type : "POST", data : { "type" : "query", "id" : id }, // 成功后开启模态框 success : showQuery, error : function() { alert("请求失败"); }, dataType : "json" }); } // 查询成功后向模态框插入数据并开启模态框。data是返回的JSON对象 function showQuery(data) { $("#name1").val(data.name); $("#xinghao1").val(data.xinghao); $("#address1").val(data.address); $("#department1").val(data.department); $("#unit1").val(data.unit); $("#number1").val(data.number); $("#price1").val(data.price); $("#totalprice1").val(data.totalprice); $("#come1").val(data.come); $("#buytime1").val(data.buytime); $("#useperson1").val(data.useperson); $("#handleperson1").val(data.handleperson); $("#admini1").val(data.admini); // 显示模态框 $('#queryInfo').modal('show'); }
后台处理ajax请求并返回JSON串(Java)
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { RegisterService service = new RegisterServiceImpl(); request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); response.setContentType("text/html; charset=UTF-8"); String type = request.getParameter("type"); if (type != null && "add".equals(type)) { try { this.add(request, response, service); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } if (type != null && "query".equals(type)) { try { this.query(request, response, service); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } public void query(HttpServletRequest request, HttpServletResponse response, RegisterService service) throws Exception { Integer id = Integer.parseInt(request.getParameter("id")); Register register = service.getRegisterById(id); Gson gson = new Gson(); String json = gson.toJson(register); System.out.println(json); response.getWriter().write(json); }
JSON串:
{"id":16,"name":"测试名称16","address":"测试地址2","department":"测试部门2","unit":"测试单位2","number":1,"price":1.5,"totalprice":1.5,"come":"来源2","buytime":"八月 23, 2017","useperson":"使用人2","handleperson":"经办人2","admini":"管理员部门2"}
2.ajax异步请求删除数据后刷新页面
请求删除的按钮(HTML)
<a class="" href="javascript:void(0)" onclick="deleteInfo(${register.id})"> <span class="glyphicon glyphicon-trash"></a>
Ajax请求删除数据后刷新页面(JS)
// ajax异步删除后刷新页面 function deleteInfo(id) { alert("dele"); $.ajax({ url : "/small/productServlet", async : true, type : "POST", data : { "type" : "delete", "id" : id }, success : function(data) { alert(data); // 删除成功后刷新页面 window.location.reload(); }, error : function() { alert("请求失败"); }, dataType : "text" }); }
后台处理删除的ajax请求(Java)
// 根据id删除 public void delete(HttpServletRequest request, HttpServletResponse response, RegisterService service) throws Exception { Integer id = Integer.valueOf(request.getParameter("id")); boolean result = service.deleteRegisterById(id); if (result) { response.getWriter().write("success delete!"); } }
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