FastAndroid开源电商项目系列之Android客户端

package com.hunter.fastandroid.utils; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.regex.Matcher; import java.util.regex.Pattern; import android.util.Log; /** * 字符串操作工具类 * @author Ht * */ public class MyStringUtils { private final static Pattern EMAILER = Pattern .compile("\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*"); private final static ThreadLocal<SimpleDateFormat> DATE_FORMATER = new ThreadLocal<SimpleDateFormat>() { @Override protected SimpleDateFormat initialValue() { return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); } }; /** * 字符串截取 * * @param str * @param length * @return * @throws Exception */ public static String subString(String str, int length) throws Exception { byte[] bytes = str.getBytes("Unicode"); int n = 0; // 表示当前的字节数 int i = 2; // 要截取的字节数，从第3个字节开始 for (; i < bytes.length && n < length; i++) { // 奇数位置，如3、5、7等，为UCS2编码中两个字节的第二个字节 if (i % 2 == 1) { n++; // 在UCS2第二个字节时n加1 } else { // 当UCS2编码的第一个字节不等于0时，该UCS2字符为汉字，一个汉字算两个字节 if (bytes[i] != 0) { n++; } } } // 如果i为奇数时，处理成偶数 if (i % 2 == 1) { // 该UCS2字符是汉字时，去掉这个截一半的汉字 if (bytes[i - 1] != 0) i = i - 1; // 该UCS2字符是字母或数字，则保留该字符 else i = i + 1; } return new String(bytes, 0, i, "Unicode"); } /** * * @param input * @return */ public static String toDBC(String input) { char[] c = input.toCharArray(); for (int i = 0; i < c.length; i++) { if (c[i] == 12288) { c[i] = (char) 32; continue; } if (c[i] > 65280 && c[i] < 65375) c[i] = (char) (c[i] - 65248); } return new String(c); } /** * 计算微博内容的长度 1个汉字 == 两个英文字母所占的长度 标点符号区分英文和中文 * * @param c * 所要统计的字符序列 * @return 返回字符序列计算的长度 */ public static long calculateWeiboLength(CharSequence c) { double len = 0; for (int i = 0; i < c.length(); i++) { int temp = (int) c.charAt(i); if (temp > 0 && temp < 127) { len += 0.5; } else { len++; } } return Math.round(len); } /** * 分割字符串 * * @param str * String 原始字符串 * @param splitsign * String 分隔符 * @return String[] 分割后的字符串数组 */ public static String[] split(String str, String splitsign) { int index; if (str == null || splitsign == null) return null; ArrayList<String> al = new ArrayList<String>(); while ((index = str.indexOf(splitsign)) != -1) { al.add(str.substring(0, index)); str = str.substring(index + splitsign.length()); } al.add(str); return (String[]) al.toArray(new String[0]); } /** * 替换字符串 * * @param from * String 原始字符串 * @param to * String 目标字符串 * @param source * String 母字符串 * @return String 替换后的字符串 */ public static String replace(String from, String to, String source) { if (source == null || from == null || to == null) return null; StringBuffer bf = new StringBuffer(""); int index = -1; while ((index = source.indexOf(from)) != -1) { bf.append(source.substring(0, index) + to); source = source.substring(index + from.length()); index = source.indexOf(from); } bf.append(source); return bf.toString(); } /** * 替换字符串，能能够在HTML页面上直接显示(替换双引号和小于号) * * @param str * String 原始字符串 * @return String 替换后的字符串 */ public static String htmlencode(String str) { if (str == null) { return null; } return replace("\"", "&quot;", replace("<", "&lt;", str)); } /** * 替换字符串，将被编码的转换成原始码（替换成双引号和小于号） * * @param str * String * @return String */ public static String htmldecode(String str) { if (str == null) { return null; } return replace("&quot;", "\"", replace("&lt;", "<", str)); } private static final String _BR = "<br/>"; /** * 在页面上直接显示文本内容，替换小于号，空格，回车，TAB * * @param str * String 原始字符串 * @return String 替换后的字符串 */ public static String htmlshow(String str) { if (str == null) { return null; } str = replace("<", "&lt;", str); str = replace(" ", "&nbsp;", str); str = replace("\r\n", _BR, str); str = replace("\n", _BR, str); str = replace("\t", "&nbsp;&nbsp;&nbsp;&nbsp;", str); return str; } /** * 返回指定字节长度的字符串 * * @param str * String 字符串 * @param length * int 指定长度 * @return String 返回的字符串 */ public static String toLength(String str, int length) { if (str == null) { return null; } if (length <= 0) { return ""; } try { if (str.getBytes("GBK").length <= length) { return str; } } catch (Exception ex) { } StringBuffer buff = new StringBuffer(); int index = 0; char c; length -= 3; while (length > 0) { c = str.charAt(index); if (c < 128) { length--; } else { length--; length--; } buff.append(c); index++; } buff.append("..."); return buff.toString(); } /** * 获取url的后缀名 * * @param urlString * @return */ public static String getUrlFileName(String urlString) { String fileName = urlString.substring(urlString.lastIndexOf("/")); fileName = fileName.substring(1, fileName.length()); if (fileName.equalsIgnoreCase("")) { Calendar c = Calendar.getInstance(); fileName = c.get(Calendar.YEAR) + "" + c.get(Calendar.MONTH) + "" + c.get(Calendar.DAY_OF_MONTH) + "" + c.get(Calendar.MINUTE); } return fileName; } public static String replaceSomeString(String str) { String dest = ""; try { if (str != null) { str = str.replaceAll("\r", ""); str = str.replaceAll("&gt;", ">"); str = str.replaceAll("&ldquo;", "“"); str = str.replaceAll("&rdquo;", "”"); str = str.replaceAll("&#39;", "'"); str = str.replaceAll("&nbsp;", ""); str = str.replaceAll("<br\\s*/>", "\n"); str = str.replaceAll("&quot;", "\""); str = str.replaceAll("&lt;", "<"); str = str.replaceAll("&lsquo;", "《"); str = str.replaceAll("&rsquo;", "》"); str = str.replaceAll("&middot;", "·"); str = str.replace("&mdash;", "—"); str = str.replace("&hellip;", "…"); str = str.replace("&amp;", "×"); str = str.replaceAll("\\s*", ""); str = str.trim(); str = str.replaceAll("<p>", "\n "); str = str.replaceAll("</p>", ""); str = str.replaceAll("<div.*?>", "\n "); str = str.replaceAll("</div>", ""); dest = str; } } catch (Exception e) { // TODO: handle exception } return dest; } /** * 清除文本里面的HTML标签 * * @param htmlStr * @return */ public static String delHTMLTag(String htmlStr) { String regEx_script = "<script[^>]*?>[\\s\\S]*?<\\/script>"; // 定义script的正则表达式 String regEx_style = "<style[^>]*?>[\\s\\S]*?<\\/style>"; // 定义style的正则表达式 String regEx_html = "<[^>]+>"; // 定义HTML标签的正则表达式 Log.v("htmlStr", htmlStr); try { Pattern p_script = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE); Matcher m_script = p_script.matcher(htmlStr); htmlStr = m_script.replaceAll(""); // 过滤script标签 Pattern p_style = Pat