http基本认证java,Javahttp基本认证

HTTP基本认证是一种用来允许Web浏览器&＃xff0c;或其他客户端程序在请求时提供以用户名和口令形式的凭证的登录方式。用户名追加一个冒号然后串接上口令&＃xff0c;得出的结果字符串再用Base64算法编码。例如&＃xff0c;用户名是: admin&＃xff0c;口令是: admin123&＃xff0c;拼接后的结果是: admin:admin123&＃xff0c;然后再用Base64编码&＃xff0c;得到YWRtaW46YWRtaW4xMjM&＃61;。Base64编码的字符串发送出去&＃xff0c;并由接收者解码&＃xff0c;得到一个由冒号分隔的用户名和口令的字符串。

例如&＃xff1a; 我们常见的家中的路由器。

package com.what21.network.demo01;

import java.net.HttpURLConnection;

import java.net.URL;

public class HTTPBasicAuthorization {

/**

* HTTP Basic Authentication

*

* &＃64;param address

* &＃64;param username

* &＃64;param password

* &＃64;return

* &＃64;throws Exception

*/

public static int connection(String address,String username,String password)

throws Exception{

URL url &＃61; new URL(address);

HttpURLConnection conn &＃61; (HttpURLConnection)url.openConnection();

String author &＃61; "Basic " &＃43; Base64.encode((username &＃43; ":" &＃43; password).getBytes());

conn.setRequestProperty("Authorization", author);

conn.connect();

return conn.getResponseCode();

}

/**

* &＃64;param args

*/

public static void main(String[] args) {

try {

connection("http://192.168.1.1","admin","admin123");

} catch (Exception e) {

e.printStackTrace();

}

}

}

package com.what21.network.demo01;

import java.io.UnsupportedEncodingException;

public class Base64 {

private static char[] base64EncodeChars &＃61; new char[] { &＃39;A&＃39;, &＃39;B&＃39;, &＃39;C&＃39;, &＃39;D&＃39;,

&＃39;E&＃39;, &＃39;F&＃39;, &＃39;G&＃39;, &＃39;H&＃39;, &＃39;I&＃39;, &＃39;J&＃39;, &＃39;K&＃39;, &＃39;L&＃39;, &＃39;M&＃39;, &＃39;N&＃39;, &＃39;O&＃39;, &＃39;P&＃39;, &＃39;Q&＃39;,

&＃39;R&＃39;, &＃39;S&＃39;, &＃39;T&＃39;, &＃39;U&＃39;, &＃39;V&＃39;, &＃39;W&＃39;, &＃39;X&＃39;, &＃39;Y&＃39;, &＃39;Z&＃39;, &＃39;a&＃39;, &＃39;b&＃39;, &＃39;c&＃39;, &＃39;d&＃39;,

&＃39;e&＃39;, &＃39;f&＃39;, &＃39;g&＃39;, &＃39;h&＃39;, &＃39;i&＃39;, &＃39;j&＃39;, &＃39;k&＃39;, &＃39;l&＃39;, &＃39;m&＃39;, &＃39;n&＃39;, &＃39;o&＃39;, &＃39;p&＃39;, &＃39;q&＃39;,

&＃39;r&＃39;, &＃39;s&＃39;, &＃39;t&＃39;, &＃39;u&＃39;, &＃39;v&＃39;, &＃39;w&＃39;, &＃39;x&＃39;, &＃39;y&＃39;, &＃39;z&＃39;, &＃39;0&＃39;, &＃39;1&＃39;, &＃39;2&＃39;, &＃39;3&＃39;,

&＃39;4&＃39;, &＃39;5&＃39;, &＃39;6&＃39;, &＃39;7&＃39;, &＃39;8&＃39;, &＃39;9&＃39;, &＃39;&＃43;&＃39;, &＃39;/&＃39; };

private static byte[] base64DecodeChars &＃61; new byte[] { -1, -1, -1, -1, -1,

-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,

-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,

-1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59,

60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,

10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1,

-1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,

38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1,

-1, -1 };

/**

* &＃64;param data

* &＃64;return

*/

public static String encode(byte[] data) {

StringBuffer sb &＃61; new StringBuffer();

int len &＃61; data.length;

int i &＃61; 0;

int b1, b2, b3;

while (i

b1 &＃61; data[i&＃43;&＃43;] & 0xff;

if (i &＃61;&＃61; len) {

sb.append(base64EncodeChars[b1 >>> 2]);

sb.append(base64EncodeChars[(b1 & 0x3) <<4]);

sb.append("&＃61;&＃61;");

break;

}

b2 &＃61; data[i&＃43;&＃43;] & 0xff;

if (i &＃61;&＃61; len) {

sb.append(base64EncodeChars[b1 >>> 2]);

sb.append(base64EncodeChars[((b1 & 0x03) <<4)

| ((b2 & 0xf0) >>> 4)]);

sb.append(base64EncodeChars[(b2 & 0x0f) <<2]);

sb.append("&＃61;");

break;

}

b3 &＃61; data[i&＃43;&＃43;] & 0xff;

sb.append(base64EncodeChars[b1 >>> 2]);

sb.append(base64EncodeChars[((b1 & 0x03) <<4)

| ((b2 & 0xf0) >>> 4)]);

sb.append(base64EncodeChars[((b2 & 0x0f) <<2)

| ((b3 & 0xc0) >>> 6)]);

sb.append(base64EncodeChars[b3 & 0x3f]);

}

return sb.toString();

}

/**

* &＃64;param str

* &＃64;return

* &＃64;throws UnsupportedEncodingException

*/

public static byte[] decode(String str) throws UnsupportedEncodingException {

StringBuffer sb &＃61; new StringBuffer();

byte[] data &＃61; str.getBytes("US-ASCII");

int len &＃61; data.length;

int i &＃61; 0;

int b1, b2, b3, b4;

while (i

do {

b1 &＃61; base64DecodeChars[data[i&＃43;&＃43;]];

} while (i

if (b1 &＃61;&＃61; -1)

break;

do {

b2 &＃61; base64DecodeChars[data[i&＃43;&＃43;]];

} while (i

if (b2 &＃61;&＃61; -1)

break;

sb.append((char) ((b1 <<2) | ((b2 & 0x30) >>> 4)));

do {

b3 &＃61; data[i&＃43;&＃43;];

if (b3 &＃61;&＃61; 61)

return sb.toString().getBytes("iso8859-1");

b3 &＃61; base64DecodeChars[b3];

} while (i

if (b3 &＃61;&＃61; -1)

break;

sb.append((char) (((b2 & 0x0f) <<4) | ((b3 & 0x3c) >>> 2)));

do {

b4 &＃61; data[i&＃43;&＃43;];

if (b4 &＃61;&＃61; 61)

return sb.toString().getBytes("iso8859-1");

b4 &＃61; base64DecodeChars[b4];

} while (i

if (b4 &＃61;&＃61; -1)

break;

sb.append((char) (((b3 & 0x03) <<6) | b4));

}

return sb.toString().getBytes("iso8859-1");

}

}