浅谈ajax在jquery中的请求和servlet中的响应
编程学习 2021-07-04 17:33www.dzhlxh.cn编程入门
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在jsp中，首先，你需要导入jquery的架包：
获取可返回站点的根路径：
<% String path = request.getContextPath(); %>
在jquery中写ajax请求：
<script type="text/javascript">
$(function(){
$(".B").click(function(){
$.ajax({
type: "GET",
//对应servlet中的方法
url: "<%=path%>" + "/queryEvaluateByuserId.do",
//返回是json数据
dataType: "json",
async:false,
data:{
},
success: function(data){
str = "";
if(data != null){
//循环表单列表
for (var i in data)
{
var num = parseInt(i) + 1 ;
str +="<tr><td>" + num + "</td><td>"
+ data[i]['name'] + "</td><td>"
+ data[i]['price'] + "元</td>"
+ "</tr>";
}
$(".trtd4").after(str);
}else{
}
},
error: function(data){
}
})
});
}
</script>
jsp部分：
<div class="tab-pane" id="B" style="text-align:center;">
<div class="row marg" >
<table border="2 " style="width:80%;text-align:center;">
<tr class="trtd4">
<th>序号</th>
<th>业主名</th>
<th>金额</th>
</tr>
</table>
</div>
</div>
在servlet中用到了阿里巴巴的快速转换json的包com.alibaba.fastjson.JSON：
private void queryEvaluateByuserId(HttpServletRequest request, HttpServletResponse response) throws SQLException, IOException, ServletException{
HttpSession session=request.getSession();
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html");
response.setCharacterEncoding("UTF-8");
Cookie[] cookies = request.getCookies();
int ownerId = 0;
for (int i = 0; i < cookies.length; i++) {
Cookie cookie = cookies[i];
if (cookie.getName().equals("ownerId")) {
ownerId = Integer.parseInt(cookie.getValue());
}
}
List<Order> orderList = new ArrayList<>();
List<Evaluate> queryEvaluateList = new ArrayList<>();
orderList = orderServiceImpl.queryOrderList(ownerId, null, null, null, null, null);
List<Map<String, String>> workers = new ArrayList<Map<String, String>>();
for(int i = 0;i < orderList.size();i++){
Map<String,String> order = new HashMap<String, String>();
order.put("description", orderList.get(i).getDescription());
order.put("name", orderList.get(i).getOwnerName());
System.out.println(orderList.get(i).getDescription());
order.put("type",orderList.get(i).getTypeName());
queryEvaluateList = orderServiceImpl.queryEvaluateListByUserId(orderList.get(i).getId());
order.put("comment", queryEvaluateList.get(0).getComment());
List<Allocation> allocation = orderServiceImpl.queryAllocationByOrderId(orderList.get(i).getId());
order.put("price", String.valueOf(allocation.get(0).getPrice()));
System.out.println(order);
workers.add(order);
}
//将map键值对转换成json，传给jsp
response.getOutputStream().write(JSON.toJSONBytes(workers));
}
以上这篇浅谈ajax在jquery中的请求和servlet中的响应就是长沙网络推广分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持狼蚁SEO。