public class Hero { 
 private String name; 
 private int hp; 
 public String getName() { 
  return name; 
 }  public void setName(String name) { 
  this.name = name; 
 } 
 public int getHp() { 
  return hp; 
 } 
 public void setHp(int hp) { 
  this.hp = hp; 
 } 
 @Override 
  public String toString() { 
   return "Hero [name=" + name + ", hp=" + hp + "]"; 
  } 
} 
public class Hero {
 private String name;
 private int hp;
 public String getName() {
 return name;
 }
 public void setName(String name) {
 this.name = name;
 }
 public int getHp() {
 return hp;
 }
 public void setHp(int hp) {
 this.hp = hp;
 }
 @Override
 public String toString() {
   return "Hero [name=" + name + ", hp=" + hp + "]";
  }
}submit.html文件
[html] view plain copy print"Content-Type" content="text/html; charset=utf-8"> 
<title>用AJAX以JSON方式提交数据</title> 
<script type="text/javascript" src="/UploadFiles/2021-04-02/jquery.min.js">

JSON.stringify函数的作用是将一个javascript对象，转换为JSON格式的字符串。
准备SubmitServlet用来接收数据


import java.io.IOException; 
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import net.sf.json.JSONObject; 
public class SubmitServlet extends HttpServlet { 
 protected void service(HttpServletRequest request, HttpServletResponse response) 
   throws ServletException, IOException { 
  String data =request.getParameter("data"); 
  System.out.println("服务端接收到的数据是：" +data); 
  JSONObject json=JSONObject.fromObject(data); 
  System.out.println("转换为JSON对象之后是："+ json); 
  Hero hero = (Hero)JSONObject.toBean(json,Hero.class); 
  System.out.println("转换为Hero对象之后是："+hero); 
 } 
} 
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONObject; 
public class SubmitServlet extends HttpServlet { 
 protected void service(HttpServletRequest request, HttpServletResponse response) 
   throws ServletException, IOException {
  String data =request.getParameter("data");
  System.out.println("服务端接收到的数据是：" +data);
  JSONObject json=JSONObject.fromObject(data); 
  System.out.println("转换为JSON对象之后是："+ json);
  Hero hero = (Hero)JSONObject.toBean(json,Hero.class); 
  System.out.println("转换为Hero对象之后是："+hero);
 } 
}


1. 获取浏览器提交的字符串
2. 把字符串转换为JSON对象
3. 把JSON对象转换为Hero对象
最后配置web.xml




<"1.0" encoding="UTF-8""1.0" encoding="UTF-8""external nofollow" href="http://127.0.0.1:8080/">http://127.0.0.1:8080/项目名/submit.html


在tomcat控制台看到传来的数据



总结
以上所述是小编给大家介绍的使用JSON格式提交数据到服务端的实例代码，希望对大家有所帮助，如果大家有任何疑问花园给我留言，小编会及时回复大家的！