Volume data acquisition request:
Request body **: ** Only POST request method, only the request body, encapsulating the POST request request parameters in the request body
the steps of:
1. 获取流对象
* BufferedReader getReader()：获取字符输入流，只能操作字符数据
* ServletInputStream getInputStream()：获取字节输入流，可以操作所有类型数据
2. 再从流对象中拿数据
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>信息页面</title>
</head>
<body>
<form action="/test/requestDemo5" method="POST">
<input type="text" name="username" placeholder="请输入用户名">
<input type="text" name="password" placeholder="请输入密码">
<input type="submit" value="提交">
</form>
<a href="/test/requestDemo4">点击播放</a>
</body>
</html>
Code demonstrates:
package com.web.request;
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 java.io.BufferedReader;
import java.io.IOException;
/**
* @ClassName: ${NAME}
* @Description: TODO
* @author: Doge_fang
* @date: 2020/3/3 20:27
*/
@WebServlet("/requestDemo5")
public class RequestDemo5 extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//获取请求消息体--请求参数
//1.获取字符流
BufferedReader reader = request.getReader();
//2.读取数据
String line = null;
while ((line = reader.readLine()) != null){
System.out.println(line);
}
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
}
Browser fill in the information:
the results:
