java经典代码
因为欣赏所以转载 原文地址 http://wuhaidong.iteye.com/blog/1668689
- package com.common.file;
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.FileNotFoundException;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.OutputStream;
- import java.text.DateFormat;
- import java.util.Date;
- import java.util.Iterator;
- import javax.swing.text.html.HTMLDocument.HTMLReader.FormAction;
- /**
- *
- * 功能描述:
- *
- * @author Administrator
- * @Date Jul 19, 2008
- * @Time 9:46:11 AM
- * @version 1.0
- */
- public class FileUtil {
- /**
- * 功能描述:列出某文件夹及其子文件夹下面的文件,并可根据扩展名过滤
- *
- * @param path
- * 文件夹
- */
- public static void list(File path) {
- if (!path.exists()) {
- System.out.println("文件名称不存在!");
- } else {
- if (path.isFile()) {
- if (path.getName().toLowerCase().endsWith(".pdf")
- || path.getName().toLowerCase().endsWith(".doc")
- || path.getName().toLowerCase().endsWith(".chm")
- || path.getName().toLowerCase().endsWith(".html")
- || path.getName().toLowerCase().endsWith(".htm")) {// 文件格式
- System.out.println(path);
- System.out.println(path.getName());
- }
- } else {
- File[] files = path.listFiles();
- for (int i = 0; i < files.length; i++) {
- list(files[i]);
- }
- }
- }
- }
- /**
- * 功能描述:拷贝一个目录或者文件到指定路径下,即把源文件拷贝到目标文件路径下
- *
- * @param source
- * 源文件
- * @param target
- * 目标文件路径
- * @return void
- */
- public static void copy(File source, File target) {
- File tarpath = new File(target, source.getName());
- if (source.isDirectory()) {
- tarpath.mkdir();
- File[] dir = source.listFiles();
- for (int i = 0; i < dir.length; i++) {
- copy(dir[i], tarpath);
- }
- } else {
- try {
- InputStream is = new FileInputStream(source); // 用于读取文件的原始字节流
- OutputStream os = new FileOutputStream(tarpath); // 用于写入文件的原始字节的流
- byte[] buf = new byte[1024];// 存储读取数据的缓冲区大小
- int len = 0;
- while ((len = is.read(buf)) != -1) {
- os.write(buf, 0, len);
- }
- is.close();
- os.close();
- } catch (FileNotFoundException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
- /**
- * @param args
- */
- public static void main(String[] args) {
- // TODO Auto-generated method stub
- File file = new File("F:\\Tomcat");
- list(file);
- Date myDate = new Date();
- DateFormat df = DateFormat.getDateInstance();
- System.out.println(df.format(myDate));
- }
- }
- package com.common.string;
- import java.util.ArrayList;
- import java.util.LinkedHashSet;
- import java.util.Set;
- import java.util.regex.Matcher;
- import java.util.regex.Pattern;
- /**
- * 功能描述:关于字符串的一些实用操作
- *
- * @author Administrator
- * @Date Jul 18, 2008
- * @Time 2:19:47 PM
- * @version 1.0
- */
- public class StringUtil {
- /**
- * 功能描述: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
- */
- @SuppressWarnings("unchecked")
- public static String[] split(String str, String splitsign) {
- int index;
- if (str == null || splitsign == null) {
- return null;
- }
- ArrayList al = new ArrayList();
- 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]);
- }
- /**
- * 功能描述: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 str = new StringBuffer("");
- int index = -1;
- while ((index = source.indexOf(from)) != -1) {
- str.append(source.substring(0, index) + to);
- source = source.substring(index + from.length());
- index = source.indexOf(from);
- }
- str.append(source);
- return str.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("\"", """, replace("<", "<", 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(""", "\"", replace("<", "<", str));
- }
- private static final String _BR = "<br/>";
- /**
- * 功能描述: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("<", "<", str);
- str = replace(" ", " ", str);
- str = replace("\r\n", _BR, str);
- str = replace("\n", _BR, str);
- str = replace("\t", " ", str);
- return str;
- }
- /**
- * 功能描述: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 e) {
- }
- 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();
- }
- /**
- * 功能描述:判断是否为整数
- *
- * @param str
- * 传入的字符串
- * @return 是整数返回true,否则返回false
- */
- public static boolean isInteger(String str) {
- Pattern pattern = Pattern.compile("^[-\\+]?[\\d]+$");
- return pattern.matcher(str).matches();
- }
- /**
- * 判断是否为浮点数,包括double和float
- *
- * @param str
- * 传入的字符串
- * @return 是浮点数返回true,否则返回false
- */
- public static boolean isDouble(String str) {
- Pattern pattern = Pattern.compile("^[-\\+]?\\d+\\.\\d+$");
- return pattern.matcher(str).matches();
- }
- /**
- * 判断是不是合法字符 c 要判断的字符
- */
- public static boolean isLetter(String str) {
- if (str == null || str.length() < 0) {
- return false;
- }
- Pattern pattern = Pattern.compile("[\\w\\.-_]*");
- return pattern.matcher(str).matches();
- }
- /**
- * 从指定的字符串中提取Email content 指定的字符串
- *
- * @param content
- * @return
- */
- public static String parse(String content) {
- String email = null;
- if (content == null || content.length() < 1) {
- return email;
- }
- // 找出含有@
- int beginPos;
- int i;
- String token = "@";
- String preHalf = "";
- String sufHalf = "";
- beginPos = content.indexOf(token);
- if (beginPos > -1) {
- // 前项扫描
- String s = null;
- i = beginPos;
- while (i > 0) {
- s = content.substring(i - 1, i);
- if (isLetter(s))
- preHalf = s + preHalf;
- else
- break;
- i--;
- }
- // 后项扫描
- i = beginPos + 1;
- while (i < content.length()) {
- s = content.substring(i, i + 1);
- if (isLetter(s))
- sufHalf = sufHalf + s;
- else
- break;
- i++;
- }
- // 判断合法性
- email = preHalf + "@" + sufHalf;
- if (isEmail(email)) {
- return email;
- }
- }
- return null;
- }
- /**
- * 功能描述:判断输入的字符串是否符合Email样式.
- *
- * @param str
- * 传入的字符串
- * @return 是Email样式返回true,否则返回false
- */
- public static boolean isEmail(String email) {
- if (email == null || email.length() < 1 || email.length() > 256) {
- return false;
- }
- Pattern pattern = Pattern
- .compile("^\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*$");
- return pattern.matcher(email).matches();
- }
- /**
- * 功能描述:判断输入的字符串是否为纯汉字
- *
- * @param str
- * 传入的字符窜
- * @return 如果是纯汉字返回true,否则返回false
- */
- public static boolean isChinese(String str) {
- Pattern pattern = Pattern.compile("[\u0391-\uFFE5]+$");
- return pattern.matcher(str).matches();
- }
- /**
- * 功能描述:是否为空白,包括null和""
- *
- * @param str
- * @return
- */
- public static boolean isBlank(String str) {
- return str == null || str.trim().length() == 0;
- }
- /**
- * 功能描述:判断是否为质数
- *
- * @param x
- * @return
- */
- public static boolean isPrime(int x) {
- if (x <= 7) {
- if (x == 2 || x == 3 || x == 5 || x == 7)
- return true;
- }
- int c = 7;
- if (x % 2 == 0)
- return false;
- if (x % 3 == 0)
- return false;
- if (x % 5 == 0)
- return false;
- int end = (int) Math.sqrt(x);
- while (c <= end) {
- if (x % c == 0) {
- return false;
- }
- c += 4;
- if (x % c == 0) {
- return false;
- }
- c += 2;
- if (x % c == 0) {
- return false;
- }
- c += 4;
- if (x % c == 0) {
- return false;
- }
- c += 2;
- if (x % c == 0) {
- return false;
- }
- c += 4;
- if (x % c == 0) {
- return false;
- }
- c += 6;
- if (x % c == 0) {
- return false;
- }
- c += 2;
- if (x % c == 0) {
- return false;
- }
- c += 6;
- }
- return true;
- }
- /**
- * 功能描述:人民币转成大写
- *
- * @param str
- * 数字字符串
- * @return String 人民币转换成大写后的字符串
- */
- public static String hangeToBig(String str) {
- double value;
- try {
- value = Double.parseDouble(str.trim());
- } catch (Exception e) {
- return null;
- }
- char[] hunit = { '拾', '佰', '仟' }; // 段内位置表示
- char[] vunit = { '万', '亿' }; // 段名表示
- char[] digit = { '零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖' }; // 数字表示
- long midVal = (long) (value * 100); // 转化成整形
- String valStr = String.valueOf(midVal); // 转化成字符串
- String head = valStr.substring(0, valStr.length() - 2); // 取整数部分
- String rail = valStr.substring(valStr.length() - 2); // 取小数部分
- String prefix = ""; // 整数部分转化的结果
- String suffix = ""; // 小数部分转化的结果
- // 处理小数点后面的数
- if (rail.equals("00")) { // 如果小数部分为0
- suffix = "整";
- } else {
- suffix = digit[rail.charAt(0) - '0'] + "角"
- + digit[rail.charAt(1) - '0'] + "分"; // 否则把角分转化出来
- }
- // 处理小数点前面的数
- char[] chDig = head.toCharArray(); // 把整数部分转化成字符数组
- char zero = '0'; // 标志'0'表示出现过0
- byte zeroSerNum = 0; // 连续出现0的次数
- for (int i = 0; i < chDig.length; i++) { // 循环处理每个数字
- int idx = (chDig.length - i - 1) % 4; // 取段内位置
- int vidx = (chDig.length - i - 1) / 4; // 取段位置
- if (chDig[i] == '0') { // 如果当前字符是0
- zeroSerNum++; // 连续0次数递增
- if (zero == '0') { // 标志
- zero = digit[0];
- } else if (idx == 0 && vidx > 0 && zeroSerNum < 4) {
- prefix += vunit[vidx - 1];
- zero = '0';
- }
- continue;
- }
- zeroSerNum = 0; // 连续0次数清零
- if (zero != '0') { // 如果标志不为0,则加上,例如万,亿什么的
- prefix += zero;
- zero = '0';
- }
- prefix += digit[chDig[i] - '0']; // 转化该数字表示
- if (idx > 0)
- prefix += hunit[idx - 1];
- if (idx == 0 && vidx > 0) {
- prefix += vunit[vidx - 1]; // 段结束位置应该加上段名如万,亿
- }
- }
- if (prefix.length() > 0)
- prefix += '圆'; // 如果整数部分存在,则有圆的字样
- return prefix + suffix; // 返回正确表示
- }
- /**
- * 功能描述:去掉字符串中重复的子字符串
- *
- * @param str
- * 原字符串,如果有子字符串则用空格隔开以表示子字符串
- * @return String 返回去掉重复子字符串后的字符串
- */
- @SuppressWarnings("unused")
- private static String removeSameString(String str) {
- Set<String> mLinkedSet = new LinkedHashSet<String>();// set集合的特征:其子集不可以重复
- String[] strArray = str.split(" ");// 根据空格(正则表达式)分割字符串
- StringBuffer sb = new StringBuffer();
- for (int i = 0; i < strArray.length; i++) {
- if (!mLinkedSet.contains(strArray[i])) {
- mLinkedSet.add(strArray[i]);
- sb.append(strArray[i] + " ");
- }
- }
- System.out.println(mLinkedSet);
- return sb.toString();
- }
- /**
- * 功能描述:过滤特殊字符
- *
- * @param src
- * @return
- */
- public static String encoding(String src) {
- if (src == null)
- return "";
- StringBuilder result = new StringBuilder();
- if (src != null) {
- src = src.trim();
- for (int pos = 0; pos < src.length(); pos++) {
- switch (src.charAt(pos)) {
- case '\"':
- result.append(""");
- break;
- case '<':
- result.append("<");
- break;
- case '>':
- result.append(">");
- break;
- case '\'':
- result.append("'");
- break;
- case '&':
- result.append("&");
- break;
- case '%':
- result.append("&pc;");
- break;
- case '_':
- result.append("&ul;");
- break;
- case '#':
- result.append("&shap;");
- break;
- case '?':
- result.append("&ques;");
- break;
- default:
- result.append(src.charAt(pos));
- break;
- }
- }
- }
- return result.toString();
- }
- /**
- * 功能描述:判断是不是合法的手机号码
- *
- * @param handset
- * @return boolean
- */
- public static boolean isHandset(String handset) {
- try {
- String regex = "^1[\\d]{10}$";
- Pattern pattern = Pattern.compile(regex);
- Matcher matcher = pattern.matcher(handset);
- return matcher.matches();
- } catch (RuntimeException e) {
- return false;
- }
- }
- /**
- * 功能描述:反过滤特殊字符
- *
- * @param src
- * @return
- */
- public static String decoding(String src) {
- if (src == null)
- return "";
- String result = src;
- result = result.replace(""", "\"").replace("'", "\'");
- result = result.replace("<", "<").replace(">", ">");
- result = result.replace("&", "&");
- result = result.replace("&pc;", "%").replace("&ul", "_");
- result = result.replace("&shap;", "#").replace("&ques", "?");
- return result;
- }
- /**
- * @param args
- */
- public static void main(String[] args) {
- String source = "abcdefgabcdefgabcdefgabcdefgabcdefgabcdefg";
- String from = "efg";
- String to = "房贺威";
- System.out.println("在字符串source中,用to替换from,替换结果为:"
- + replace(from, to, source));
- System.out.println("返回指定字节长度的字符串:"
- + toLength("abcdefgabcdefgabcdefgabcdefgabcdefgabcdefg", 9));
- System.out.println("判断是否为整数:" + isInteger("+0"));
- System.out.println("判断是否为浮点数,包括double和float:" + isDouble("+0.36"));
- System.out.println("判断输入的字符串是否符合Email样式:" +
- isEmail("fhwbj@163.com"));
- System.out.println("判断输入的字符串是否为纯汉字:" + isChinese("你好!"));
- System.out.println("判断输入的数据是否是质数:" + isPrime(12));
- System.out.println("人民币转换成大写:" + hangeToBig("10019658"));
- System.out.println("去掉字符串中重复的子字符串:" + removeSameString("100 100 9658"));
- System.out.println("过滤特殊字符:" + encoding("100\"s<>fdsd100 9658"));
- System.out.println("判断是不是合法的手机号码:" + isHandset("15981807340"));
- System.out.println("从字符串中取值Email:" + parse("159818 fwhbj@163.com07340"));
- }
- }
- package com.common.time;
- import java.text.DateFormat;
- import java.text.SimpleDateFormat;
- import java.util.Calendar;
- import java.util.Date;
- /**
- *
- * 功能描述:
- *
- * @author Administrator
- * @Date Jul 19, 2008
- * @Time 9:47:53 AM
- * @version 1.0
- */
- public class DateUtil {
- public static Date date = null;
- public static DateFormat dateFormat = null;
- public static Calendar calendar = null;
- /**
- * 功能描述:格式化日期
- *
- * @param dateStr
- * String 字符型日期
- * @param format
- * String 格式
- * @return Date 日期
- */
- public static Date parseDate(String dateStr, String format) {
- try {
- dateFormat = new SimpleDateFormat(format);
- String dt = dateStr.replaceAll("-", "/");
- if ((!dt.equals("")) && (dt.length() < format.length())) {
- dt += format.substring(dt.length()).replaceAll("[YyMmDdHhSs]",
- "0");
- }
- date = (Date) dateFormat.parse(dt);
- } catch (Exception e) {
- }
- return date;
- }
- /**
- * 功能描述:格式化日期
- *
- * @param dateStr
- * String 字符型日期:YYYY-MM-DD 格式
- * @return Date
- */
- public static Date parseDate(String dateStr) {
- return parseDate(dateStr, "yyyy/MM/dd");
- }
- /**
- * 功能描述:格式化输出日期
- *
- * @param date
- * Date 日期
- * @param format
- * String 格式
- * @return 返回字符型日期
- */
- public static String format(Date date, String format) {
- String result = "";
- try {
- if (date != null) {
- dateFormat = new SimpleDateFormat(format);
- result = dateFormat.format(date);
- }
- } catch (Exception e) {
- }
- return result;
- }
- /**
- * 功能描述:
- *
- * @param date
- * Date 日期
- * @return
- */
- public static String format(Date date) {
- return format(date, "yyyy/MM/dd");
- }
- /**
- * 功能描述:返回年份
- *
- * @param date
- * Date 日期
- * @return 返回年份
- */
- public static int getYear(Date date) {
- calendar = Calendar.getInstance();
- calendar.setTime(date);
- return calendar.get(Calendar.YEAR);
- }
- /**
- * 功能描述:返回月份
- *
- * @param date
- * Date 日期
- * @return 返回月份
- */
- public static int getMonth(Date date) {
- calendar = Calendar.getInstance();
- calendar.setTime(date);
- return calendar.get(Calendar.MONTH) + 1;
- }
- /**
- * 功能描述:返回日份
- *
- * @param date
- * Date 日期
- * @return 返回日份
- */
- public static int getDay(Date date) {
- calendar = Calendar.getInstance();
- calendar.setTime(date);
- return calendar.get(Calendar.DAY_OF_MONTH);
- }
- /**
- * 功能描述:返回小时
- *
- * @param date
- * 日期
- * @return 返回小时
- */
- public static int getHour(Date date) {
- calendar = Calendar.getInstance();
- calendar.setTime(date);
- return calendar.get(Calendar.HOUR_OF_DAY);
- }
- /**
- * 功能描述:返回分钟
- *
- * @param date
- * 日期
- * @return 返回分钟
- */
- public static int getMinute(Date date) {
- calendar = Calendar.getInstance();
- calendar.setTime(date);
- return calendar.get(Calendar.MINUTE);
- }
- /**
- * 返回秒钟
- *
- * @param date
- * Date 日期
- * @return 返回秒钟
- */
- public static int getSecond(Date date) {
- calendar = Calendar.getInstance();
- calendar.setTime(date);
- return calendar.get(Calendar.SECOND);
- }
- /**
- * 功能描述:返回毫秒
- *
- * @param date
- * 日期
- * @return 返回毫秒
- */
- public static long getMillis(Date date) {
- calendar = Calendar.getInstance();
- calendar.setTime(date);
- return calendar.getTimeInMillis();
- }
- /**
- * 功能描述:返回字符型日期
- *
- * @param date
- * 日期
- * @return 返回字符型日期 yyyy/MM/dd 格式
- */
- public static String getDate(Date date) {
- return format(date, "yyyy/MM/dd");
- }
- /**
- * 功能描述:返回字符型时间
- *
- * @param date
- * Date 日期
- * @return 返回字符型时间 HH:mm:ss 格式
- */
- public static String getTime(Date date) {
- return format(date, "HH:mm:ss");
- }
- /**
- * 功能描述:返回字符型日期时间
- *
- * @param date
- * Date 日期
- * @return 返回字符型日期时间 yyyy/MM/dd HH:mm:ss 格式
- */
- public static String getDateTime(Date date) {
- return format(date, "yyyy/MM/dd HH:mm:ss");
- }
- /**
- * 功能描述:日期相加
- *
- * @param date
- * Date 日期
- * @param day
- * int 天数
- * @return 返回相加后的日期
- */
- public static Date addDate(Date date, int day) {
- calendar = Calendar.getInstance();
- long millis = getMillis(date) + ((long) day) * 24 * 3600 * 1000;
- calendar.setTimeInMillis(millis);
- return calendar.getTime();
- }
- /**
- * 功能描述:日期相减
- *
- * @param date
- * Date 日期
- * @param date1
- * Date 日期
- * @return 返回相减后的日期
- */
- public static int diffDate(Date date, Date date1) {
- return (int) ((getMillis(date) - getMillis(date1)) / (24 * 3600 * 1000));
- }
- /**
- * 功能描述:取得指定月份的第一天
- *
- * @param strdate
- * String 字符型日期
- * @return String yyyy-MM-dd 格式
- */
- public static String getMonthBegin(String strdate) {
- date = parseDate(strdate);
- return format(date, "yyyy-MM") + "-01";
- }
- /**
- * 功能描述:取得指定月份的最后一天
- *
- * @param strdate
- * String 字符型日期
- * @return String 日期字符串 yyyy-MM-dd格式
- */
- public static String getMonthEnd(String strdate) {
- date = parseDate(getMonthBegin(strdate));
- calendar = Calendar.getInstance();
- calendar.setTime(date);
- calendar.add(Calendar.MONTH, 1);
- calendar.add(Calendar.DAY_OF_YEAR, -1);
- return formatDate(calendar.getTime());
- }
- /**
- * 功能描述:常用的格式化日期
- *
- * @param date
- * Date 日期
- * @return String 日期字符串 yyyy-MM-dd格式
- */
- public static String formatDate(Date date) {
- return formatDateByFormat(date, "yyyy-MM-dd");
- }
- /**
- * 功能描述:以指定的格式来格式化日期
- *
- * @param date
- * Date 日期
- * @param format
- * String 格式
- * @return String 日期字符串
- */
- public static String formatDateByFormat(Date date, String format) {
- String result = "";
- if (date != null) {
- try {
- SimpleDateFormat sdf = new SimpleDateFormat(format);
- result = sdf.format(date);
- } catch (Exception ex) {
- ex.printStackTrace();
- }
- }
- return result;
- }
- public static void main(String[] args) {
- Date d = new Date();
- System.out.println(d.toString());
- System.out.println(formatDate(d).toString());
- System.out.println(getMonthBegin(formatDate(d).toString()));
- System.out.println(getMonthBegin("2008/07/19"));
- System.out.println(getMonthEnd("2008/07/19"));
- System.out.println(addDate(d,15).toString());
- }
- }
- /*[java]一个压缩工具类 zip2008年05月28日 星期三 17:48/*
- * Zip.java
- *
- * Created on 2008年4月2日, 下午2:20
- *
- * To change this template, choose Tools | Template Manager
- * and open the template in the editor.
- */
- package com.founder.mnp.utl;
- /**
- *
- * @author GuoJiale
- */
- import java.io.BufferedInputStream;
- import java.io.BufferedOutputStream;
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.FileOutputStream;
- import java.util.zip.ZipEntry;
- import java.util.zip.ZipOutputStream;
- public class ZipUtils {
- static final int BUFFER = 2048;
- public static boolean zip( String[] filename ,String outname){
- boolean test = true;
- try {
- BufferedInputStream origin = null;
- FileOutputStream dest = new FileOutputStream(outname);
- ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(
- dest));
- byte data[] = new byte[BUFFER];
- // File f= new File("d:\\111\\");
- // File files[] = f.listFiles();
- for (int i = 0; i < filename.length; i++) {
- File file = new File(filename[i]);
- FileInputStream fi = new FileInputStream(file);
- origin = new BufferedInputStream(fi, BUFFER);
- ZipEntry entry = new ZipEntry(file.getName());
- out.putNextEntry(entry);
- int count;
- while ((count = origin.read(data, 0, BUFFER)) != -1) {
- out.write(data, 0, count);
- }
- origin.close();
- }
- out.close();
- } catch (Exception e) {
- test = false;
- e.printStackTrace();
- }
- return test;
- }
- public static void main(String argv[]) {
- // File f= new File("d:\\111\\");
- String[] filenames = new String[]{"F:\\12.jpg"};
- zip(filenames,"F:/12.zip");
- }
- }
- package com.test.test;
- /************************************************
- MD5 算法的Java Bean
- Last Modified:10,Mar,2001
- *************************************************/
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.FileNotFoundException;
- import java.io.IOException;
- import java.math.BigInteger;
- import java.security.MessageDigest;
- import java.util.HashMap;
- import java.util.Map;
- import java.util.zip.CRC32;
- import java.util.zip.CheckedInputStream;
- /*************************************************
- * md5 类实现了RSA Data Security, Inc.在提交给IETF 的RFC1321中的MD5 message-digest 算法。
- *************************************************/
- public class MD5 {
- /*
- * 下面这些S11-S44实际上是一个44的矩阵,在原始的C实现中是用#define 实现的, 这里把它们实现成为static
- * final是表示了只读,切能在同一个进程空间内的多个 Instance间共享
- */
- private static final int S11 = 7;
- private static final int S12 = 12;
- private static final int S13 = 17;
- private static final int S14 = 22;
- private static final int S21 = 5;
- private static final int S22 = 9;
- private static final int S23 = 14;
- private static final int S24 = 20;
- private static final int S31 = 4;
- private static final int S32 = 11;
- private static final int S33 = 16;
- private static final int S34 = 23;
- private static final int S41 = 6;
- private static final int S42 = 10;
- private static final int S43 = 15;
- private static final int S44 = 21;
- private static final byte[] PADDING = { -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0 };
- /*
- * 下面的三个成员是MD5计算过程中用到的3个核心数据,在原始的C实现中 被定义到MD5_CTX结构中
- */
- private long[] state = new long[4]; // state (ABCD)
- private long[] count = new long[2]; // number of bits, modulo 2^64 (lsb
- // first)
- private byte[] buffer = new byte[64]; // input buffer
- /*
- * digestHexStr是MD5的唯一一个公共成员,是最新一次计算结果的 16进制ASCII表示.
- */
- private String digestHexStr;
- /*
- * digest,是最新一次计算结果的2进制内部表示,表示128bit的MD5值.
- */
- private byte[] digest = new byte[16];
- /**
- * getMD5ofStr是类MD5最主要的公共方法,入口参数是你想要进行MD5变换的字符串
- * 返回的是变换完的结果,这个结果是从公共成员digestHexStr取得的.
- */
- public String getMD5ofStr(String inbuf) {
- md5Init();
- md5Update(inbuf.getBytes(), inbuf.length());
- md5Final();
- digestHexStr = "";
- for (int i = 0; i < 16; i++) {
- digestHexStr += byteHEX(digest[i]);
- }
- return digestHexStr;
- }
- // 这是MD5这个类的标准构造函数,JavaBean要求有一个public的并且没有参数的构造函数
- public MD5() {
- md5Init();
- return;
- }
- /* md5Init是一个初始化函数,初始化核心变量,装入标准的幻数 */
- private void md5Init() {
- count[0] = 0L;
- count[1] = 0L;
- // /* Load magic initialization constants.
- state[0] = 0x67452301L;
- state[1] = 0xefcdab89L;
- state[2] = 0x98badcfeL;
- state[3] = 0x10325476L;
- return;
- }
- /*
- * F, G, H ,I 是4个基本的MD5函数,在原始的MD5的C实现中,由于它们是
- * 简单的位运算,可能出于效率的考虑把它们实现成了宏,在java中,我们把它们 实现成了private方法,名字保持了原来C中的。
- */
- private long F(long x, long y, long z) {
- return (x & y) | ((~x) & z);
- }
- private long G(long x, long y, long z) {
- return (x & z) | (y & (~z));
- }
- private long H(long x, long y, long z) {
- return x ^ y ^ z;
- }
- private long I(long x, long y, long z) {
- return y ^ (x | (~z));
- }
- /*
- * Rotation is separate from addition to prevent recomputation.
- */
- private long FF(long a, long b, long c, long d, long x, long s, long ac) {
- a += F(b, c, d) + x + ac;
- a = ((int) a << s) | ((int) a >>> (32 - s));
- a += b;
- return a;
- }
- private long GG(long a, long b, long c, long d, long x, long s, long ac) {
- a += G(b, c, d) + x + ac;
- a = ((int) a << s) | ((int) a >>> (32 - s));
- a += b;
- return a;
- }
- private long HH(long a, long b, long c, long d, long x, long s, long ac) {
- a += H(b, c, d) + x + ac;
- a = ((int) a << s) | ((int) a >>> (32 - s));
- a += b;
- return a;
- }
- private long II(long a, long b, long c, long d, long x, long s, long ac) {
- a += I(b, c, d) + x + ac;
- a = ((int) a << s) | ((int) a >>> (32 - s));
- a += b;
- return a;
- }
- /*
- * md5Update是MD5的主计算过程,inbuf是要变换的字节串,inputlen是长度,这个
- * 函数由getMD5ofStr调用,调用之前需要调用md5init,因此把它设计成private的
- */
- private void md5Update(byte[] inbuf, int inputLen) {
- int i, index, partLen;
- byte[] block = new byte[64];
- index = (int) (count[0] >>> 3) & 0x3F;
- // /* Update number of bits */
- if ((count[0] += (inputLen << 3)) < (inputLen << 3))
- count[1]++;
- count[1] += (inputLen >>> 29);
- partLen = 64 - index;
- // Transform as many times as possible.
- if (inputLen >= partLen) {
- md5Memcpy(buffer, inbuf, index, 0, partLen);
- md5Transform(buffer);
- for (i = partLen; i + 63 < inputLen; i += 64) {
- md5Memcpy(block, inbuf, 0, i, 64);
- md5Transform(block);
- }
- index = 0;
- } else
- i = 0;
- // /* Buffer remaining input */
- md5Memcpy(buffer, inbuf, index, i, inputLen - i);
- }
- /*
- * md5Final整理和填写输出结果
- */
- private void md5Final() {
- byte[] bits = new byte[8];
- int index, padLen;
- // /* Save number of bits */
- Encode(bits, count, 8);
- // /* Pad out to 56 mod 64.
- index = (int) (count[0] >>> 3) & 0x3f;
- padLen = (index < 56) ? (56 - index) : (120 - index);
- md5Update(PADDING, padLen);
- // /* Append length (before padding) */
- md5Update(bits, 8);
- // /* Store state in digest */
- Encode(digest, state, 16);
- }
- /*
- * md5Memcpy是一个内部使用的byte数组的块拷贝函数,从input的inpos开始把len长度的
- * 字节拷贝到output的outpos位置开始
- */
- private void md5Memcpy(byte[] output, byte[] input, int outpos, int inpos,
- int len) {
- int i;
- for (i = 0; i < len; i++)
- output[outpos + i] = input[inpos + i];
- }
- /*
- * md5Transform是MD5核心变换程序,有md5Update调用,block是分块的原始字节
- */
- private void md5Transform(byte block[]) {
- long a = state[0], b = state[1], c = state[2], d = state[3];
- long[] x = new long[16];
- Decode(x, block, 64);
- /* Round 1 */
- a = FF(a, b, c, d, x[0], S11, 0xd76aa478L); /* 1 */
- d = FF(d, a, b, c, x[1], S12, 0xe8c7b756L); /* 2 */
- c = FF(c, d, a, b, x[2], S13, 0x242070dbL); /* 3 */
- b = FF(b, c, d, a, x[3], S14, 0xc1bdceeeL); /* 4 */
- a = FF(a, b, c, d, x[4], S11, 0xf57c0fafL); /* 5 */
- d = FF(d, a, b, c, x[5], S12, 0x4787c62aL); /* 6 */
- c = FF(c, d, a, b, x[6], S13, 0xa8304613L); /* 7 */
- b = FF(b, c, d, a, x[7], S14, 0xfd469501L); /* 8 */
- a = FF(a, b, c, d, x[8], S11, 0x698098d8L); /* 9 */
- d = FF(d, a, b, c, x[9], S12, 0x8b44f7afL); /* 10 */
- c = FF(c, d, a, b, x[10], S13, 0xffff5bb1L); /* 11 */
- b = FF(b, c, d, a, x[11], S14, 0x895cd7beL); /* 12 */
- a = FF(a, b, c, d, x[12], S11, 0x6b901122L); /* 13 */
- d = FF(d, a, b, c, x[13], S12, 0xfd987193L); /* 14 */
- c = FF(c, d, a, b, x[14], S13, 0xa679438eL); /* 15 */
- b = FF(b, c, d, a, x[15], S14, 0x49b40821L); /* 16 */
- /* Round 2 */
- a = GG(a, b, c, d, x[1], S21, 0xf61e2562L); /* 17 */
- d = GG(d, a, b, c, x[6], S22, 0xc040b340L); /* 18 */
- c = GG(c, d, a, b, x[11], S23, 0x265e5a51L); /* 19 */
- b = GG(b, c, d, a, x[0], S24, 0xe9b6c7aaL); /* 20 */
- a = GG(a, b, c, d, x[5], S21, 0xd62f105dL); /* 21 */
- d = GG(d, a, b, c, x[10], S22, 0x2441453L); /* 22 */
- c = GG(c, d, a, b, x[15], S23, 0xd8a1e681L); /* 23 */
- b = GG(b, c, d, a, x[4], S24, 0xe7d3fbc8L); /* 24 */
- a = GG(a, b, c, d, x[9], S21, 0x21e1cde6L); /* 25 */
- d = GG(d, a, b, c, x[14], S22, 0xc33707d6L); /* 26 */
- c = GG(c, d, a, b, x[3], S23, 0xf4d50d87L); /* 27 */
- b = GG(b, c, d, a, x[8], S24, 0x455a14edL); /* 28 */
- a = GG(a, b, c, d, x[13], S21, 0xa9e3e905L); /* 29 */
- d = GG(d, a, b, c, x[2], S22, 0xfcefa3f8L); /* 30 */
- c = GG(c, d, a, b, x[7], S23, 0x676f02d9L); /* 31 */
- b = GG(b, c, d, a, x[12], S24, 0x8d2a4c8aL); /* 32 */
- /* Round 3 */
- a = HH(a, b, c, d, x[5], S31, 0xfffa3942L); /* 33 */
- d = HH(d, a, b, c, x[8], S32, 0x8771f681L); /* 34 */
- c = HH(c, d, a, b, x[11], S33, 0x6d9d6122L); /* 35 */
- b = HH(b, c, d, a, x[14], S34, 0xfde5380cL); /* 36 */
- a = HH(a, b, c, d, x[1], S31, 0xa4beea44L); /* 37 */
- d = HH(d, a, b, c, x[4], S32, 0x4bdecfa9L); /* 38 */
- c = HH(c, d, a, b, x[7], S33, 0xf6bb4b60L); /* 39 */
- b = HH(b, c, d, a, x[10], S34, 0xbebfbc70L); /* 40 */
- a = HH(a, b, c, d, x[13], S31, 0x289b7ec6L); /* 41 */
- d = HH(d, a, b, c, x[0], S32, 0xeaa127faL); /* 42 */
- c = HH(c, d, a, b, x[3], S33, 0xd4ef3085L); /* 43 */
- b = HH(b, c, d, a, x[6], S34, 0x4881d05L); /* 44 */
- a = HH(a, b, c, d, x[9], S31, 0xd9d4d039L); /* 45 */
- d = HH(d, a, b, c, x[12], S32, 0xe6db99e5L); /* 46 */
- c = HH(c, d, a, b, x[15], S33, 0x1fa27cf8L); /* 47 */
- b = HH(b, c, d, a, x[2], S34, 0xc4ac5665L); /* 48 */
- /* Round 4 */
- a = II(a, b, c, d, x[0], S41, 0xf4292244L); /* 49 */
- d = II(d, a, b, c, x[7], S42, 0x432aff97L); /* 50 */
- c = II(c, d, a, b, x[14], S43, 0xab9423a7L); /* 51 */
- b = II(b, c, d, a, x[5], S44, 0xfc93a039L); /* 52 */
- a = II(a, b, c, d, x[12], S41, 0x655b59c3L); /* 53 */
- d = II(d, a, b, c, x[3], S42, 0x8f0ccc92L); /* 54 */
- c = II(c, d, a, b, x[10], S43, 0xffeff47dL); /* 55 */
- b = II(b, c, d, a, x[1], S44, 0x85845dd1L); /* 56 */
- a = II(a, b, c, d, x[8], S41, 0x6fa87e4fL); /* 57 */
- d = II(d, a, b, c, x[15], S42, 0xfe2ce6e0L); /* 58 */
- c = II(c, d, a, b, x[6], S43, 0xa3014314L); /* 59 */
- b = II(b, c, d, a, x[13], S44, 0x4e0811a1L); /* 60 */
- a = II(a, b, c, d, x[4], S41, 0xf7537e82L); /* 61 */
- d = II(d, a, b, c, x[11], S42, 0xbd3af235L); /* 62 */
- c = II(c, d, a, b, x[2], S43, 0x2ad7d2bbL); /* 63 */
- b = II(b, c, d, a, x[9], S44, 0xeb86d391L); /* 64 */
- state[0] += a;
- state[1] += b;
- state[2] += c;
- state[3] += d;
- }
- /*
- * Encode把long数组按顺序拆成byte数组,因为java的long类型是64bit的, 只拆低32bit,以适应原始C实现的用途
- */
- private void Encode(byte[] output, long[] input, int len) {
- int i, j;
- for (i = 0, j = 0; j < len; i++, j += 4) {
- output[j] = (byte) (input[i] & 0xffL);
- output[j + 1] = (byte) ((input[i] >>> 8) & 0xffL);
- output[j + 2] = (byte) ((input[i] >>> 16) & 0xffL);
- output[j + 3] = (byte) ((input[i] >>> 24) & 0xffL);
- }
- }
- /*
- * Decode把byte数组按顺序合成成long数组,因为java的long类型是64bit的,
- * 只合成低32bit,高32bit清零,以适应原始C实现的用途
- */
- private void Decode(long[] output, byte[] input, int len) {
- int i, j;
- for (i = 0, j = 0; j < len; i++, j += 4)
- output[i] = b2iu(input[j]) | (b2iu(input[j + 1]) << 8)
- | (b2iu(input[j + 2]) << 16) | (b2iu(input[j + 3]) << 24);
- return;
- }
- /**
- * b2iu是我写的一个把byte按照不考虑正负号的原则的"升位"程序,因为java没有unsigned运算
- */
- public static long b2iu(byte b) {
- return b < 0 ? b & 0x7F + 128 : b;
- }
- /**
- * byteHEX(),用来把一个byte类型的数转换成十六进制的ASCII表示,
- * 因为java中的byte的toString无法实现这一点,我们又没有C语言中的 sprintf(outbuf,"%02X",ib)
- */
- public static String byteHEX(byte ib) {
- char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A',
- 'B', 'C', 'D', 'E', 'F' };
- char[] ob = new char[2];
- ob[0] = Digit[(ib >>> 4) & 0X0F];
- ob[1] = Digit[ib & 0X0F];
- String s = new String(ob);
- return s;
- }
- //-----------------------------------------------------------
- /**
- * 获取单个文件的MD5值!
- * @param file
- * @return
- */
- public static String getFileMD5(File file) {
- if (!file.isFile()) {
- return null;
- }
- MessageDigest digest = null;
- FileInputStream in = null;
- byte buffer[] = new byte[1024];
- int len;
- try {
- digest = MessageDigest.getInstance("MD5");
- in = new FileInputStream(file);
- while ((len = in.read(buffer, 0, 1024)) != -1) {
- digest.update(buffer, 0, len);
- }
- in.close();
- } catch (Exception e) {
- e.printStackTrace();
- return null;
- }
- BigInteger bigInt = new BigInteger(1, digest.digest());
- return bigInt.toString(16).toUpperCase();
- }
- /**
- * 获取单个文件的SHA1值!
- *
- * @param file
- * @return
- */
- public static String getFileSHA1(File file) {
- if (!file.isFile()) {
- return null;
- }
- MessageDigest digest = null;
- FileInputStream in = null;
- byte buffer[] = new byte[1024];
- int len;
- try {
- digest = MessageDigest.getInstance("SHA1");
- in = new FileInputStream(file);
- while ((len = in.read(buffer, 0, 1024)) != -1) {
- digest.update(buffer, 0, len);
- }
- in.close();
- } catch (Exception e) {
- e.printStackTrace();
- return null;
- }
- BigInteger bigInt = new BigInteger(1, digest.digest());
- return bigInt.toString(16).toUpperCase();
- }
- /**
- * 获取单个文件的CRC32值!
- * @param file
- * @return
- * @throws Exception
- */
- public static String getFileCRC32(File file) {
- FileInputStream fileinputstream;
- try {
- fileinputstream = new FileInputStream(file);
- CRC32 crc32 = new CRC32();
- for (CheckedInputStream checkedinputstream = new CheckedInputStream(
- fileinputstream, crc32); checkedinputstream.read() != -1;) {
- }
- return Long.toHexString(crc32.getValue());
- } catch (FileNotFoundException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- }
- return null;
- }
- /**
- * 获取文件夹中文件的MD5值
- *
- * @param file
- * @param listChild
- * ;true递归子目录中的文件
- * @return
- */
- public static Map<String, String> getDirMD5(File file, boolean listChild) {
- if (!file.isDirectory()) {
- return null;
- }
- // <filepath,md5>
- Map<String, String> map = new HashMap<String, String>();
- String md5;
- File files[] = file.listFiles();
- for (int i = 0; i < files.length; i++) {
- File f = files[i];
- if (f.isDirectory() && listChild) {
- map.putAll(getDirMD5(f, listChild));
- } else {
- md5 = getFileMD5(f);
- if (md5 != null) {
- map.put(f.getPath(), md5);
- }
- }
- }
- return map;
- }
- /**
- * 获取文件夹中文件的SHA1值
- *
- * @param file
- * @param listChild
- * ;true递归子目录中的文件
- * @return
- */
- public static Map<String, String> getDirSHA1(File file, boolean listChild) {
- if (!file.isDirectory()) {
- return null;
- }
- // <filepath,SHA1>
- Map<String, String> map = new HashMap<String, String>();
- String sha1;
- File files[] = file.listFiles();
- for (int i = 0; i < files.length; i++) {
- File f = files[i];
- if (f.isDirectory() && listChild) {
- map.putAll(getDirSHA1(f, listChild));
- } else {
- sha1 = getFileSHA1(f);
- if (sha1 != null) {
- map.put(f.getPath(), sha1);
- }
- }
- }
- return map;
- }
- /**
- * 获取文件夹中文件的CRC32值
- *
- * @param file
- * @param listChild
- * ;true递归子目录中的文件
- * @return
- */
- public static Map<String, String> getDirCRC32(File file, boolean listChild) {
- if (!file.isDirectory()) {
- return null;
- }
- // <filepath,CRC32>
- Map<String, String> map = new HashMap<String, String>();
- String crc32;
- File files[] = file.listFiles();
- for (int i = 0; i < files.length; i++) {
- File f = files[i];
- if (f.isDirectory() && listChild) {
- map.putAll(getDirCRC32(f, listChild));
- } else {
- crc32 = getFileCRC32(f);
- if (crc32 != null) {
- map.put(f.getPath(), crc32);
- }
- }
- }
- return map;
- }
- }