108 lines
4.0 KiB
Plaintext
108 lines
4.0 KiB
Plaintext
package com.ifish.tianqi;
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import javax.crypto.Mac;
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import java.net.URLEncoder;
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import java.security.InvalidKeyException;
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import javax.crypto.spec.SecretKeySpec;
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public class javaDemo {
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private static final char last2byte = (char) Integer.parseInt("00000011", 2);
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private static final char last4byte = (char) Integer.parseInt("00001111", 2);
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private static final char last6byte = (char) Integer.parseInt("00111111", 2);
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private static final char lead6byte = (char) Integer.parseInt("11111100", 2);
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private static final char lead4byte = (char) Integer.parseInt("11110000", 2);
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private static final char lead2byte = (char) Integer.parseInt("11000000", 2);
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private static final char[] encodeTable = new char[] { 'A', 'B', 'C', 'D',
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'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q',
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'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
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'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
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'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3',
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'4', '5', '6', '7', '8', '9', '+', '/'
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};
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public static String standardURLEncoder(String data, String key) {
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byte[] byteHMAC = null;
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String urlEncoder = "";
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try {
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Mac mac = Mac.getInstance("HmacSHA1");
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SecretKeySpec spec = new SecretKeySpec(key.getBytes(), "HmacSHA1");
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mac.init(spec);
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byteHMAC = mac.doFinal(data.getBytes());
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if (byteHMAC != null) {
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String oauth = encode(byteHMAC);
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if (oauth != null) {
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urlEncoder = URLEncoder.encode(oauth, "utf8");
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}
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}
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} catch (InvalidKeyException e1) {
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e1.printStackTrace();
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} catch (Exception e2) {
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e2.printStackTrace();
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}
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return urlEncoder;
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}
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public static String encode(byte[] from) {
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StringBuffer to = new StringBuffer((int) (from.length * 1.34) + 3);
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int num = 0;
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char currentByte = 0;
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for (int i = 0; i < from.length; i++) {
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num = num % 8;
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while (num < 8) {
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switch (num) {
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case 0:
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currentByte = (char) (from[i] & lead6byte);
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currentByte = (char) (currentByte >>> 2);
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break;
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case 2:
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currentByte = (char) (from[i] & last6byte);
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break;
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case 4:
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currentByte = (char) (from[i] & last4byte);
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currentByte = (char) (currentByte << 2);
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if ((i + 1) < from.length) {
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currentByte |= (from[i + 1] & lead2byte) >>> 6;
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}
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break;
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case 6:
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currentByte = (char) (from[i] & last2byte);
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currentByte = (char) (currentByte << 4);
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if ((i + 1) < from.length) {
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currentByte |= (from[i + 1] & lead4byte) >>> 4;
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}
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break;
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}
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to.append(encodeTable[currentByte]);
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num += 6;
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}
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}
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if (to.length() % 4 != 0) {
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for (int i = 4 - to.length() % 4; i > 0; i--) {
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to.append("=");
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}
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}
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return to.toString();
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}
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public static void main(String[] args) {
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try {
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//需要加密的数据
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String data = "http://open.weather.com.cn/data/?areaid=101020100&type=forecast_v&date=201603011100&appid=ee35072ca2850278";
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//密钥
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String key = "c4a99d_SmartWeatherAPI_a164e18";
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String str = standardURLEncoder(data, key);
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System.out.println(str);
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// http://open.weather.com.cn/data/?areaid=101020100&type=forecast_v&date=201603011100&appid=ee3507&key=WCD90OiAMNfP3g5qhdhXiUnyBnA%3D
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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