package com.ruoyi.common.utils;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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/**
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* MD5加密工具类
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*/
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public class MD5Util {
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/**
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* MD5加密（32位小写）
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* @param plainText 明文
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* @return 32位小写MD5
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*/
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public static String md5(String plainText) {
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try {
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MessageDigest md = MessageDigest.getInstance("MD5");
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md.update(plainText.getBytes());
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byte[] b = md.digest();
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StringBuilder buf = new StringBuilder("");
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for (int offset = 0; offset < b.length; offset++) {
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int i = b[offset];
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if (i < 0) {
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i += 256;
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}
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if (i < 16) {
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buf.append("0");
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}
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buf.append(Integer.toHexString(i));
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}
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return buf.toString();
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} catch (NoSuchAlgorithmException e) {
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e.printStackTrace();
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return "";
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}
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}
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}
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