Java Authenticator getRequestingScheme() 方法

2025 年 3 月 20 日 | 阅读 2 分钟

Authenticator 类的 getRequestingScheme() 方法用于获取请求者的 scheme（例如，HTTP 防火墙的 HTTP scheme）。

语法

参数

不传递任何参数。

请求者的 scheme。

Throw

不抛出异常。

示例 1

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 
import java.net.Authenticator; 
import java.net.InetAddress; 
import java.net.MalformedURLException; 
import java.net.PasswordAuthentication; 
import java.net.URL; 
 public class AuthenticatorgetRequestingSchemeExample1 
{ 
    public static void main(String[] args)  
    { 
        try { 
            ClassAuthenticator obj1 =new ClassAuthenticator();
            Authenticator.setDefault(new ClassAuthenticator()); 
            URL url = new URL("https://tpointtech.cn"); 
           
            BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream())); 
            String line; 
            System.out.println("Host using url.getHost ::"+url.getHost()); 
           obj1.getPasswordAuthentication() ;
            while ((line = in.readLine()) != null) { 
                System.out.println(line); 
            } 
            in.close(); 
        } catch (MalformedURLException e) { 
            System.out.println("Malformed URL: " + e.getMessage()); 
        } catch (IOException e) { 
           System.out.println("I/O Error: " + e.getMessage()); 
        } 
    } 
    public static class ClassAuthenticator extends Authenticator  
    { 
        protected PasswordAuthentication getPasswordAuthentication()  
        { 
            this.show();
            String username = "TpointTech"; 
            String password = "java"; 
            return new PasswordAuthentication(username, password.toCharArray()); 
        } 
        void show()
        {
            String Scheme = getRequestingScheme(); 
            System.out.println("Scheme:" +Scheme);  
        }
    } 
}

输出

Host using url.getHost ::www.TpointTech.com
Scheme:null
// Source code of https://tpointtech.cn is printed.

示例 2

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 
import java.net.Authenticator; 
import java.net.InetAddress; 
import java.net.MalformedURLException; 
import java.net.PasswordAuthentication; 
import java.net.URL; 
  
public class AuthenticatorgetRequestingSchemeExample2   
{ 
    public static void main(String[] args)  
    { 
          try { 
             ClassAuthenticator obj1 =new ClassAuthenticator();
            Authenticator.setDefault(new ClassAuthenticator()); 
            obj1.getPasswordAuthentication() ;
            URL url = new URL("https://tpointtech.cn"); 
            BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream())); 
            System.out.println("Protocol:" + url.getProtocol());  
            String line; 
            while ((line = in.readLine()) != null) { 
                System.out.println(line); 
            } 
            in.close(); 
        } catch (MalformedURLException e) { 
            System.out.println("Malformed URL: " + e.getMessage()); 
        } catch (IOException e) { 
            System.out.println("I/O Error: " + e.getMessage()); 
        } 
    } 
    public static class ClassAuthenticator extends Authenticator  
    { 
        protected PasswordAuthentication getPasswordAuthentication()  
        { 
            String name = getRequestingScheme(); 
            System.out.println("Scheme :" +name ); 
            String username = "TpointTech"; 
            String password = "java"; 
            return new PasswordAuthentication(username, password.toCharArray()); 
        } 
    } 
} 

输出

Scheme :null
Protocol:https
// Source code of https://tpointtech.cn is printed.

下一主题getRequestingSite() 方法

Java Authenticator getRequestingScheme() 方法

语法

参数

返回

Throw

示例 1

示例 2

联系信息

关注我们

教程

面试题

在线编译器

Python

Java

.Net Framework

AI, ML and Data Science

Cloud Technology

B.Tech and MCA

Web Technology

PHP

Software Testing

Technical Interview

Java Interview

Python

Web Interview

Database Interview

B.Tech / MCA

Important Interview

Software Testing Interview

Company Interviews

Online Compilers

Multiple Choice Questions

Java String 方法

Java 数组类

Java Math 方法

ArrayList 方法

Java List 方法

Java 线程方法

Java Date 类

Java Collection 方法

Java ListIterator 类

Java NIO 教程

HttpURLConnection

Java Deque

Java HttpCookie 类

Java URL 类

Java Vector 类

Java Socket 类

Java Executors

Java Integer 类

Java IdentityHashMap

Java ArrayBlockingQueue

Java Timestamp

Java Spliterator

Java Bitset

Java Instant

Java Compiler 类

Java AtomicInteger 类

Java AtomicLong 方法

Java Authenticator

Java BigDecimal 类

Big Integer 类

Java Boolean 类

Java Byte Class

Java Class

Java Collections 类

CopyOnWriteArrayList

LinkedBlockingDeque

Java Long 类

LinkedTransferQueue

Java List

Java MulticastSocket

Java Number 类

Java Phaser 类

Java Authenticator getRequestingScheme() 方法

语法

参数

返回

Throw

示例 1

示例 2

相关帖子

getRequestingPrompt()

getRequestingSite()

getRequestingHost()

getRequestingProtocol()

getRequestorType()

setDefault()

getRequestingPort()

getRequestingURL()

getPasswordAuthentication()

Java Authenticator