标签：name com list json JSONObject import 解析 servlet
一、jar包准备
jar: fastJson / gson
二、前端代码
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<button id="btn">click</button>
<script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript">
$("#btn").click(function(){
var list = {"list":[{name:'sf',age:'fs'}]};
$.ajax({
url:"log",
type:'post',
contentType: 'application/json',
data: JSON.stringify(list),
success:function(res){
console.log(res);
alert(res);
}
});
})
</script>
</body>
</html>
三、工具类
package com.qst.until;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import javax.servlet.ServletInputStream;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
public class JsonUtils {
public static JSONArray getJson(InputStreamReader req) {
JSONObject json = new JSONObject();
JSONArray list = new JSONArray();
BufferedReader br;
String jsonStr = null;
String jsonStr2 = null;
try {
br = new BufferedReader(req);
String line = null;
StringBuilder sb = new StringBuilder();
while ((line = br.readLine()) != null) {
sb.append(line);
}
json= JSONObject.parseObject(sb.toString());
jsonStr = JSONObject.toJSONString(json);
list = json.getJSONArray("list");
jsonStr2 = JSONArray.toJSONString(list);
} catch (IOException e) {
e.printStackTrace();
}
return list;
}
}
四、servlet代码
package com.qst.servlet;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import javax.servlet.ServletException;
import javax.servlet.ServletInputStream;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.google.gson.JsonObject;
import com.qst.until.JsonUtils;
@WebServlet("/log")
public class log extends HttpServlet {
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setCharacterEncoding("utf-8");
resp.setContentType("text/html;charset=UTF-8");
String name = null;
InputStreamReader reader = new InputStreamReader((ServletInputStream) req.getInputStream());
JSONArray list = JsonUtils.getJson(reader);
System.out.println("list===============");
System.out.println(list);
System.out.println("逐个取出===============");
for (int i = 0; i < list.size(); i++) {
JSONObject object = (JSONObject) list.get(i);
System.out.println("name" + object.getString("name") + "age" + object.getString("age"));
name = object.getString("name");
}
resp.getWriter().write(name);
}
}
标签：name,com,list,json,JSONObject,import,解析,servlet 来源： https://blog.csdn.net/weixin_44763595/article/details/117673044
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