Java URI getAuthority()方法及示例

getAuthority()函数是URI类的一部分。getAuthority()函数返回一个指定的URI的权限。URL的授权部分是URI的主机名和端口。

函数签名

public String getAuthority()

语法:

url.getAuthority()

参数 此函数不需要任何参数

返回类型 该函数返回字符串类型，即指定URL的授权。

下面的程序说明了getRawAuthority()函数的使用。

例1:

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

输出:

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

例2： getAuthority()和getHost()函数的区别在于，getAuthority()返回主机和端口，而getHost()只返回主机名。

// Java program to show the// use of the function getAuthority()  import java.net.*;  class GFG {    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 (Exception e) {              // display the error            System.out.println(e);        }    }}

输出:

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

例3： getAuthority()和getRawAuthority()返回的值是一样的，只是所有转义的八位数序列都被解码了。getRawAuthority()函数返回用户提供的字符串的准确值，但getAuthority()函数对转义八位字节的序列进行解码，如果有的话。

// Java program to show the// use of the function getAuthority()  import java.net.*;  class GFG {    public static void main(String args[])    {        // url  object        URI uri = null;          try {            // create a URI            uri                = new URI(                    "https://www.geeksforgeeks%E2%82%AC.org:80");              // get the Authority            String authority                = uri.getAuthority();              // get the Raw Authority            String Raw_authority                = uri.getRawAuthority();              // display the URI            System.out.println("URI = " + uri);              // display the Authority            System.out.println("Authority = "                               + authority);              // display the Raw Authority            System.out.println("Raw Authority = "                               + Raw_authority);        }          // if any error occurs        catch (Exception e) {              // display the error            System.out.println(e);        }    }}

输出:

URI = https://www.geeksforgeeks%E2%82%AC.org:80Authority = www.geeksforgeeks?.org:80Raw Authority = www.geeksforgeeks%E2%82%AC.org:80

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