90 lines
2.2 KiB
Plaintext
90 lines
2.2 KiB
Plaintext
package com.ifish.jpush.utils;
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import java.io.UnsupportedEncodingException;
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import java.net.URLEncoder;
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import java.security.MessageDigest;
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public class StringUtils {
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private final static String[] hexDigits = { "0", "1", "2", "3", "4", "5",
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"6", "7", "8", "9", "A", "B", "C", "D", "E", "F" };
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private static String byteArrayToHexString(byte[] b) {
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StringBuffer resultSb = new StringBuffer();
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for (int i = 0; i < b.length; i++) {
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resultSb.append(byteToHexString(b[i]));
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}
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return resultSb.toString();
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}
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private static String byteToHexString(byte b) {
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int n = b;
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if (n < 0)
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n = 256 + n;
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int d1 = n / 16;
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int d2 = n % 16;
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return hexDigits[d1] + hexDigits[d2];
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}
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public static String toMD5(String origin) {
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String resultString = null;
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try {
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resultString = new String(origin);
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MessageDigest md = MessageDigest.getInstance("MD5");
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resultString = byteArrayToHexString(md.digest(resultString.getBytes()));
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} catch (Exception ex) {
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ex.printStackTrace();
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}
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return resultString;
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}
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public static String encodeParam(String param) {
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String encodeParam = null;
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try {
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encodeParam = URLEncoder.encode(param, "UTF-8");
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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}
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return encodeParam;
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}
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public static String arrayToString(String[] values) {
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if (null == values) return "";
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StringBuffer buffer = new StringBuffer(values.length);
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for (int i = 0; i < values.length; i++) {
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buffer.append(values[i]).append(",");
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}
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if (buffer.length() > 0) {
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return buffer.toString().substring(0, buffer.length() - 1);
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}
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return "";
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}
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public static boolean isEmpty(String s) {
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return s == null || s.length() == 0;
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}
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public static boolean isTrimedEmpty(String s) {
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return s == null || s.trim().length() == 0;
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}
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public static boolean isNotEmpty(String s) {
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return s != null && s.length() > 0;
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}
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public static boolean isLineBroken(String s) {
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if ( null == s ) {
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return false;
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}
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if (s.contains("\n")) {
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return true;
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}
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if (s.contains("\r\n")) {
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return true;
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}
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return false;
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}
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}
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