package com.landtool.lanbase.common.shiro;
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import java.security.MessageDigest;
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import java.util.UUID;
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import com.landtool.lanbase.common.exception.LanbaseException;
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/**
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* @author lanbase
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* @Description: TODO(生成token)
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* @date 2017-6-23 15:07
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*/
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public class TokenGenerator {
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public static String generateValue() {
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return generateValue(UUID.randomUUID().toString());
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}
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private static final char[] hexCode = "0123456789abcdef".toCharArray();
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public static String toHexString(byte[] data) {
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if(data == null) {
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return null;
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}
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StringBuilder r = new StringBuilder(data.length*2);
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for ( byte b : data) {
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r.append(hexCode[(b >> 4) & 0xF]);
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r.append(hexCode[(b & 0xF)]);
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}
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return r.toString();
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}
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public static String generateValue(String param) {
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try {
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MessageDigest algorithm = MessageDigest.getInstance("MD5");
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algorithm.reset();
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algorithm.update(param.getBytes());
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byte[] messageDigest = algorithm.digest();
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return toHexString(messageDigest);
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} catch (Exception e) {
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throw new LanbaseException("生成Token失败", e);
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}
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}
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}
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