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https://gitee.com/likeadmin/likeadmin_java.git
synced 2026-06-25 06:30:48 +08:00
增加验证码功能
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TinyAnts
@@ -14,6 +14,7 @@ public enum HttpEnum {
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LOGIN_DISABLE_ERROR(331, "登录账号已被禁用了"),
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TOKEN_EMPTY(332, "token参数为空"),
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TOKEN_INVALID(333, "token参数无效"),
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CAPTCHA_ERROR(334, "验证码错误"),
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NO_PERMISSION(403, "无相关权限"),
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REQUEST_404_ERROR(404, "请求接口不存在"),
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@@ -0,0 +1,266 @@
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package com.mdd.common.util;
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/**
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* Base64工具类
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*/
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public final class Base64Util
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{
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static private final int BASE_LENGTH = 128;
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static private final int LOOK_UP_LENGTH = 64;
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static private final int TWENTY_FOUR_BIT_GROUP = 24;
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static private final int EIGHT_BIT = 8;
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static private final int SIXTEEN_BIT = 16;
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static private final int FOUR_BYTE = 4;
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static private final int SIGN = -128;
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static private final char PAD = '=';
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static final private byte[] base64Alphabet = new byte[BASE_LENGTH];
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static final private char[] lookUpBase64Alphabet = new char[LOOK_UP_LENGTH];
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static {
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for (int i = 0; i < BASE_LENGTH; ++i) {
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base64Alphabet[i] = -1;
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}
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for (int i = 'Z'; i >= 'A'; i--) {
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base64Alphabet[i] = (byte) (i - 'A');
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}
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for (int i = 'z'; i >= 'a'; i--) {
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base64Alphabet[i] = (byte) (i - 'a' + 26);
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}
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for (int i = '9'; i >= '0'; i--) {
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base64Alphabet[i] = (byte) (i - '0' + 52);
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}
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base64Alphabet['+'] = 62;
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base64Alphabet['/'] = 63;
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for (int i = 0; i <= 25; i++) {
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lookUpBase64Alphabet[i] = (char) ('A' + i);
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}
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for (int i = 26, j = 0; i <= 51; i++, j++) {
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lookUpBase64Alphabet[i] = (char) ('a' + j);
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}
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for (int i = 52, j = 0; i <= 61; i++, j++) {
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lookUpBase64Alphabet[i] = (char) ('0' + j);
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}
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lookUpBase64Alphabet[62] = '+';
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lookUpBase64Alphabet[63] = '/';
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}
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/**
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* 转码
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*
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* @param binaryData 未转码数据
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* @return 转码后数据串
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*/
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public static String encode(byte[] binaryData) {
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if (binaryData == null) {
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return null;
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}
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int lengthDataBits = binaryData.length * EIGHT_BIT;
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if (lengthDataBits == 0) {
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return "";
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}
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int fewerThan24bits = lengthDataBits % TWENTY_FOUR_BIT_GROUP;
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int numberTriplets = lengthDataBits / TWENTY_FOUR_BIT_GROUP;
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int numberQuartet = fewerThan24bits != 0 ? numberTriplets + 1 : numberTriplets;
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char[] encodedData;
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encodedData = new char[numberQuartet * 4];
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byte k, l, b1, b2, b3;
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int encodedIndex = 0;
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int dataIndex = 0;
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for (int i = 0; i < numberTriplets; i++) {
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b1 = binaryData[dataIndex++];
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b2 = binaryData[dataIndex++];
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b3 = binaryData[dataIndex++];
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k = (byte) (b1 & 0x03);
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l = (byte) (b2 & 0x0f);
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byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2) : (byte) ((b1) >> 2 ^ 0xc0);
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byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4) : (byte) ((b2) >> 4 ^ 0xf0);
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byte val3 = ((b3 & SIGN) == 0) ? (byte) (b3 >> 6) : (byte) ((b3) >> 6 ^ 0xfc);
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encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[(l << 2) | val3];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[b3 & 0x3f];
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}
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if (fewerThan24bits == EIGHT_BIT) {
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b1 = binaryData[dataIndex];
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k = (byte) (b1 & 0x03);
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byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2) : (byte) ((b1) >> 2 ^ 0xc0);
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encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[k << 4];
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encodedData[encodedIndex++] = PAD;
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encodedData[encodedIndex++] = PAD;
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} else if (fewerThan24bits == SIXTEEN_BIT) {
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b1 = binaryData[dataIndex];
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b2 = binaryData[dataIndex + 1];
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l = (byte) (b2 & 0x0f);
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k = (byte) (b1 & 0x03);
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byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2) : (byte) ((b1) >> 2 ^ 0xc0);
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byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4) : (byte) ((b2) >> 4 ^ 0xf0);
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encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];
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encodedData[encodedIndex++] = lookUpBase64Alphabet[l << 2];
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encodedData[encodedIndex++] = PAD;
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}
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return new String(encodedData);
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}
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/**
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* 解码
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*
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* @param encoded 已转码数据
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* @return 解码后数据
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*/
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public static byte[] decode(String encoded) {
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if (encoded == null) {
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return null;
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}
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char[] base64Data = encoded.toCharArray();
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int len = removeWhiteSpace(base64Data);
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if (len % FOUR_BYTE != 0) {
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return null;
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}
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int numberQuadruple = (len / FOUR_BYTE);
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if (numberQuadruple == 0) {
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return new byte[0];
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}
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byte[] decodedData;
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byte b1, b2, b3, b4;
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char d1, d2, d3, d4;
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int i = 0;
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int encodedIndex = 0;
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int dataIndex = 0;
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decodedData = new byte[(numberQuadruple) * 3];
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for (; i < numberQuadruple - 1; i++) {
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if (!isData((d1 = base64Data[dataIndex++])) || !isData((d2 = base64Data[dataIndex++]))
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|| !isData((d3 = base64Data[dataIndex++])) || !isData((d4 = base64Data[dataIndex++])))
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{
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return null;
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}
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b1 = base64Alphabet[d1];
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b2 = base64Alphabet[d2];
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b3 = base64Alphabet[d3];
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b4 = base64Alphabet[d4];
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decodedData[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);
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decodedData[encodedIndex++] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));
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decodedData[encodedIndex++] = (byte) (b3 << 6 | b4);
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}
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if (!isData((d1 = base64Data[dataIndex++])) || !isData((d2 = base64Data[dataIndex++]))) {
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return null;
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}
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b1 = base64Alphabet[d1];
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b2 = base64Alphabet[d2];
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d3 = base64Data[dataIndex++];
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d4 = base64Data[dataIndex++];
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if (!isData((d3)) || !isData((d4))) {
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if (isPad(d3) && isPad(d4)) {
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if ((b2 & 0xf) != 0) {
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return null;
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}
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byte[] tmp = new byte[i * 3 + 1];
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System.arraycopy(decodedData, 0, tmp, 0, i * 3);
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tmp[encodedIndex] = (byte) (b1 << 2 | b2 >> 4);
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return tmp;
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} else if (!isPad(d3) && isPad(d4)) {
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b3 = base64Alphabet[d3];
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if ((b3 & 0x3) != 0) {
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return null;
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}
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byte[] tmp = new byte[i * 3 + 2];
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System.arraycopy(decodedData, 0, tmp, 0, i * 3);
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tmp[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);
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tmp[encodedIndex] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));
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return tmp;
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} else {
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return null;
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}
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} else {
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b3 = base64Alphabet[d3];
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b4 = base64Alphabet[d4];
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decodedData[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);
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decodedData[encodedIndex++] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));
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decodedData[encodedIndex++] = (byte) (b4 | b3 << 6);
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}
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return decodedData;
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}
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/**
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* 是否空白
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*
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* @param octEct 位
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* @return boolean
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*/
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private static boolean isWhiteSpace(char octEct) {
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return (octEct == 0x20 || octEct == 0xd || octEct == 0xa || octEct == 0x9);
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}
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/**
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* 是否填充
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*
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* @param octEct 位
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* @return boolean
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*/
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private static boolean isPad(char octEct) {
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return (octEct == PAD);
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}
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/**
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* 是否数据
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*
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* @param octEct 位
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* @return Boolean
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*/
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private static Boolean isData(char octEct) {
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return (octEct < BASE_LENGTH && base64Alphabet[octEct] != -1);
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}
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/**
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* 移除空白
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*
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* @param data 数据
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* @return int
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*/
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private static int removeWhiteSpace(char[] data) {
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if (data == null) {
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return 0;
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}
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int newSize = 0;
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int len = data.length;
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for (int i = 0; i < len; i++) {
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if (!isWhiteSpace(data[i])) {
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data[newSize++] = data[i];
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}
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}
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return newSize;
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}
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}
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