如何使用ajax接收后台发送过来的json数据？针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
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后台代码
package com.sidan.outjson;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.sidan.jsonutil.GetJson;
/**
* Servlet implementation class OutJson
*/
@WebServlet("/OutJson")
public class OutJson extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public OutJson() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request,response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setCharacterEncoding("UTF-8");
PrintWriter out = response.getWriter();
String s = GetJson.getJson();
out.print(s);
}
}Pserson类
package com.sidan.jsonutil;
public class Person {
private String name;
private String sex;
private int age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}将数据包装成json格式类（数据直接是循环添加的所以一样这里是为了简单）
package com.sidan.jsonutil;
import java.util.ArrayList;
public class GetJson {
public static String getJson(){
return json().toString();
}
public static StringBuffer json(){
StringBuffer sb = new StringBuffer();
ArrayList arr = initArray();
int x = 0;
sb.append("[");
for(Person p:arr){
sb.append("{");
sb.append("\"name\"");
sb.append(":");
sb.append("\""+p.getName()+"\"");
sb.append(",");
sb.append("\"age\"");
sb.append(":");
sb.append("\""+p.getAge()+"\"");
sb.append(",");
sb.append("\"sex\"");
sb.append(":");
sb.append("\""+p.getSex()+"\"");
sb.append("}");
if(x != arr.size()-1){
sb.append(",");
}
x++;
}
sb.append("]");
return sb;
}
public static ArrayList initArray(){
ArrayList arr = new ArrayList();
for(int i = 0;i < 10;i++){
Person p = new Person();
p.setName("sdchen");
p.setAge(20);
p.setSex("man");
arr.add(p);
}
return arr;
}
} jsp页面代码
