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mosty-hczx/src/main/java/com/mosty/hczx/utils/MD5Utils.java

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+package com.mosty.hczx.utils;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.math.BigInteger;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public class MD5Utils {
+	private static MessageDigest md5 = null;
+	static {
+		try {
+			md5 = MessageDigest.getInstance("MD5");
+		} catch (Exception e) {
+			System.out.println(e.getMessage());
+		}
+	}
+
+	/**
+	 * 用于获取一个String的md5值
+	 * 
+	 * @param string
+	 * @return
+	 */
+	public static String getMd5(String str) {
+		byte[] bs = md5.digest(str.getBytes());
+		StringBuilder sb = new StringBuilder(40);
+		for (byte x : bs) {
+			if ((x & 0xff) >> 4 == 0) {
+				sb.append("0").append(Integer.toHexString(x & 0xff));
+			} else {
+				sb.append(Integer.toHexString(x & 0xff));
+			}
+		}
+		return sb.toString();
+	}
+
+	public static void main(String[] args) {
+		System.out.println(getMd5("abc@123"));
+	}
+
+	/**
+	 * 通过网站域名URL获取该网站的源码
+	 * 
+	 * @param url
+	 * @return String
+	 * @throws Exception
+	 */
+	public static InputStream getURLinStream(String pathUrl) throws Exception {
+		URL url = new URL(pathUrl);
+		HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+		conn.setRequestMethod("GET");
+		conn.setConnectTimeout(5 * 1000);
+		return conn.getInputStream(); // 通过输入流获取html二进制数据
+	}
+
+	/**
+	 * 获取md5
+	 * 
+	 * @param path
+	 * @return
+	 * @throws Exception
+	 */
+	public static String getUrlMd5(String url) throws Exception {
+		try {
+			InputStream fis = getURLinStream(url);
+			MessageDigest md = MessageDigest.getInstance("MD5");
+			byte[] buffer = new byte[1024];
+			int length = -1;
+			while ((length = fis.read(buffer, 0, 1024)) != -1) {
+				md.update(buffer, 0, length);
+			}
+			BigInteger bigInt = new BigInteger(1, md.digest());
+			return bigInt.toString(16);
+		} catch (FileNotFoundException e) {
+			e.printStackTrace();
+		} catch (NoSuchAlgorithmException e) {
+			e.printStackTrace();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		return "";
+	}
+}