Java URI getHost()用法及代碼示例

getHost()函數是URI類的一部分。函數getHost()返回指定URI的主機。
URL的主機部分是URI的主機名。

函數簽名：

public String getHost()

返回類型函數返回字符串類型

用法

url.getHost()

參數：此函數不需要任何參數

以下程序將說明getHost()函數的用法

範例1：

// Java program to show the  
// use of the function getHost() 
  
import java.net.*; 
class Solution { 
public static void main(String args[]) 
    { 
        // URI  object 
        URI uri = null; 
  
        try { 
            // create a URI 
            uri = new URI("https://www.geeksforgeeks.org"); 
  
            // get the Host 
            String host = uri.getHost(); 
  
            // display the URI 
            System.out.println("URI = " + uri); 
  
            // display the Host 
            System.out.println("Host = " + host); 
        } 
        // if any error occurs 
        catch (URISyntaxException e) { 
            // display the error 
            System.out.println("URI Exception =" + e.getMessage()); 
        } 
    } 
}

輸出：

URI = https://www.geeksforgeeks.org
Host = www.geeksforgeeks.org

範例2：getAuthority()和getHost()函數之間的區別在於，getAuthority()隨端口一起返回主機，而getHost()僅返回主機名。

// Java program to show the  
// use of the function getHost() 
  
import java.net.*; 
  
class Solution { 
    public static void main(String args[]) 
    { 
        // url  object 
        URI uri = null; 
  
        try { 
            // create a URI 
            uri = new URI("https://www.geeksforgeeks.org:80"); 
  
            // get the Authority 
            String authority = uri.getAuthority(); 
  
            // get the Host 
            String host = uri.getHost(); 
  
            // display the URI 
            System.out.println("URI = " + uri); 
  
            // display the Authority 
            System.out.println("Authority = " + authority); 
  
            // display the Host 
            System.out.println("Host = " + host); 
        } 
        // if any error occurs 
        catch (URISyntaxException e) { 
            // display the error 
            System.out.println("URI Exception =" + e.getMessage()); 
        } 
    } 
}

輸出：

URI = https://www.geeksforgeeks.org:80
Authority = www.geeksforgeeks.org:80
Host = www.geeksforgeeks.org

相關用法

注：本文由純淨天空篩選整理自andrew1234大神的英文原創作品 URI getHost() method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。