项目经验分享——Java常用工具类集合

写在前面

本文涉及的工具类部分是自己编写，另一部分是在项目里收集的。工具类涉及数据库连接、格式转换、文件操作、发送邮件等等。提高开发效率，欢迎收藏与转载。

数据库连接工具类

数据库连接工具类——仅仅获得连接对象 ConnDB.java

package com.util;import java.sql.Connection;import java.sql.DriverManager;/** * 数据库连接工具类——仅仅获得连接对象 * */public class ConnDB {private static Connection conn = null;private static final String DRIVER_NAME = "com.mysql.jdbc.Driver";private static final String URL = "jdbc:mysql://localhost:3306/axt?useUnicode=true&characterEncoding=UTF-8";private static final String USER_NAME = "root";private static final String PASSWORD = "root";public static Connection getConn(){try {Class.forName(DRIVER_NAME);conn = DriverManager.getConnection(URL, USER_NAME, PASSWORD);} catch (Exception e) {e.printStackTrace();}return conn;}}

数据库连接工具类——包含取得连接和关闭资源 ConnUtil.java

package com.util;import java.sql.Connection;import java.sql.DriverManager;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;/**  * @className: ConnUtil.java * @classDescription: 数据库连接工具类——包含取得连接和关闭资源  * @function:  * @author: Wentasy * @createTime: 2012-9-24 上午11:51:15 * @modifyTime:  * @modifyReason:  * @since: JDK 1.6 */public class ConnUtil {public static final String url = "jdbc:mysql://XXX.XXX.XXX.XXX:3306/dbadapter";public static final String user = "root";public static final String password = "XXXXXX";/** * 得到连接 * @return * @throws SQLException * @throws ClassNotFoundException */public static Connection establishConn() throws SQLException,ClassNotFoundException{Class.forName("com.mysql.jdbc.Driver");return DriverManager.getConnection(url, user, password);}/** * 关闭连接 * @param conn * @throws SQLException */public static void close(Connection conn) throws SQLException{if(conn != null){conn.close();conn = null;}}/** * 关闭PreparedStatement * @param pstmt * @throws SQLException */public static void close(PreparedStatement pstmt) throws SQLException{if(pstmt != null){pstmt.close();pstmt = null;}}/** * 关闭结果集 * @param rs * @throws SQLException */public static void close(ResultSet rs) throws SQLException{if(rs != null){rs.close();rs = null;}}}

格式转换工具类

日期转换工具类 CommUtil.java

package com.util;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;/** * 日期转换工具类 */public class CommUtil {/** * 将日期格式转换成yyyy-MM-dd的字符串格式 * 返回值如：2010-10-06 * @param time 要转换的日期 * @return */public static  String dateToString(Date time)  {    SimpleDateFormat formatter = new  SimpleDateFormat ("yyyy-MM-dd"); //定义将日期格式要换成的格式    String stringTime  =  formatter.format(time);        return  stringTime;          }/** * 将日期格式转换成yyyyMMdd的字符串格式 * 返回值如：2010-10-06 * @param time 要转换的日期 * @return */public static  String dateTimeToString(Date time)  {    SimpleDateFormat formatter = new  SimpleDateFormat ("yyyyMMdd"); //定义将日期格式要换成的格式    String stringTime  =  formatter.format(time);        return  stringTime;          } /** * 将日期格式转换成yyyy-MM-dd的字符串格式 * 返回值如：2010-10-06 * @param time 要转换的日期 * @return */public static  Date dateToDate(Date time)  {    SimpleDateFormat formatter = new  SimpleDateFormat ("yyyy-MM-dd"); //定义将日期格式要换成的格式    String stringTime  =  formatter.format(time); Date date = null;try {date = formatter.parse(stringTime);} catch (ParseException e) {e.printStackTrace();}        return  date;        }/** * 得到当前时间，以字符串表示 * @return */public static String getDate(){Date date = new Date();return CommUtil.dateToString(date);}}

日期转换类 DateConverter.java

package com.util;import java.text.DateFormat;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Map;import com.opensymphony.xwork2.conversion.impl.DefaultTypeConverter;/** * 日期转换类 * */public class DateConverter extends DefaultTypeConverter {private static final DateFormat[] ACCEPT_DATE_FORMATS = {new SimpleDateFormat("dd/MM/yyyy"),new SimpleDateFormat("yyyy-MM-dd"),new SimpleDateFormat("yyyy/MM/dd") }; //支持转换的日期格式 @Override public Object convertValue(Map context, Object value, Class toType) { if (toType == Date.class) {  //浏览器向服务器提交时，进行String to Date的转换 Date date = null; String dateString = null; String[] params = (String[])value; dateString = params[0];//获取日期的字符串 for (DateFormat format : ACCEPT_DATE_FORMATS) { try { return format.parse(dateString);//遍历日期支持格式，进行转换 } catch(Exception e) { continue; } } return null; } else if (toType == String.class) {   //服务器向浏览器输出时，进行Date to String的类型转换 Date date = (Date)value; return new SimpleDateFormat("yyyy-MM-dd").format(date);//输出的格式是yyyy-MM-dd } return null; }}

功能更强大的格式化工具类 FormatUtils.java

package com.util;import java.text.DecimalFormat;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;/** * 功能更强大的格式化工具类 */public class FormatUtils {private static SimpleDateFormat second = new SimpleDateFormat("yy-MM-dd hh:mm:ss");private static SimpleDateFormat day = new SimpleDateFormat("yyyy-MM-dd");private static SimpleDateFormat detailDay = new SimpleDateFormat("yyyy年MM月dd日");private static SimpleDateFormat fileName = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");private static SimpleDateFormat tempTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");private static SimpleDateFormat excelDate = new SimpleDateFormat("yyyy/MM/dd");/** * 格式化excel中的时间 * @param date * @return */public static String formatDateForExcelDate(Date date) {return excelDate.format(date);}/** * 将日期格式化作为文件名 * @param date * @return */public static String formatDateForFileName(Date date) {return fileName.format(date);}/** * 格式化日期(精确到秒) *  * @param date * @return */public static String formatDateSecond(Date date) {return second.format(date);}/** * 格式化日期(精确到秒) *  * @param date * @return */public static String tempDateSecond(Date date) {return tempTime.format(date);}public static Date tempDateSecond(String str) {try {return tempTime.parse(str);} catch (ParseException e) {e.printStackTrace();}return new Date();}/** * 格式化日期(精确到天) *  * @param date * @return */public static String formatDateDay(Date date) {return day.format(date);}/** * 格式化日期(精确到天) *  * @param date * @return */public static String formatDateDetailDay(Date date) {return detailDay.format(date);}/** * 将double类型的数字保留两位小数（四舍五入） *  * @param number * @return */public static String formatNumber(double number) {DecimalFormat df = new DecimalFormat();df.applyPattern("#0.00");return df.format(number);}/** * 将字符串转换成日期 *  * @param date * @return * @throws Exception */public static Date formateDate(String date) throws Exception {return day.parse(date);}/** * 将字符日期转换成Date * @param date * @return * @throws Exception */public static Date parseStringToDate(String date) throws Exception {return day.parse(date);}public static String formatDoubleNumber(double number) {DecimalFormat df = new DecimalFormat("#");return df.format(number);}}

文件操作工具类

目录操作工具类 CopyDir.java

package com.util;import java.io.*;/** * 1,建立目的目录。 2，遍历源目录。 3，遍历过程中，创建文件或者文件夹。 原理：其实就是改变了源文件或者目录的目录头。 * @datetime  Dsc  24 */public class CopyDir {private File sDir, dDir, newDir;public CopyDir(String s, String d) {this(new File(s), new File(d));}CopyDir(File sDir, File dDir)// c:\\Test d:\\abc{this.sDir = sDir;this.dDir = dDir;}public void copyDir() throws IOException {// 是创建目的目录。也就是创建要拷贝的源文件夹。Test// 获取源文件夹名称。String name = sDir.getName();// 通过该名称在目的目录创建该文件夹，为了存放源文件夹中的文件或者文件夹。// 将目的目录和源文件夹名称，封装成File对象。newDir = dDir;// new File(dDir,name);// 调用该对象的mkdir方法。在目的目录创建该文件夹。d:\\abc\\TestnewDir.mkdir();//// 遍历源文件夹。listAll(sDir);}/* * 将遍历目录封装成方法。 在遍历过程中，遇到文件创建文件。 遇到目录创建目录。 */private void listAll(File dir) throws IOException {File[] files = dir.listFiles();for (int x = 0; x < files.length; x++) {if (files[x].isDirectory()) {createDir(files[x]);// 调用创建目录的方法。listAll(files[x]);// 在继续进行递归。进入子级目录。} else {createFile(files[x]);// 调用创建文件的方法。}}}/* * copy目录。通过源目录在目的目录创建新目录。 */private void createDir(File dir) {File d = replaceFile(dir);d.mkdir();}/* * copy文件。 */private void createFile(File file) throws IOException {File newFile = replaceFile(file);// copy文件是一个数据数据传输的过程。需要通过流来完成。FileInputStream fis = new FileInputStream(file);FileOutputStream fos = new FileOutputStream(newFile);byte[] buf = new byte[1024 * 2];int num = 0;while ((num = fis.read(buf)) != -1) {fos.write(buf, 0, num);}fos.close();fis.close();}/* * 替换路径。 */private File replaceFile(File f) {// 原理是：将源目录的父目录(C:\\Tset)，替换成目的父目录。（d:\\abc\\Test）String path = f.getAbsolutePath();// 获取源文件或者文件夹的决定路径。// 将源文件或者文件夹的绝对路径替换成目的路径。String newPath = path.replace(sDir.getAbsolutePath(), newDir.getAbsolutePath());// 将新的目的路径封装成File对象File newFile = new File(newPath);return newFile;}}

文件/目录部分处理工具类 DealDir.java

package com.util;import java.io.File;import java.util.StringTokenizer;/** * 文件/目录 部分处理 * @createTime Dec 25, 2010 7:06:58 AM * @version 1.0 */public class DealDir {/** * 获取文件的后缀名并转化成大写 *  * @param fileName *            文件名 * @return */public String getFileSuffix(String fileName) throws Exception {return fileName.substring(fileName.lastIndexOf(".") + 1,fileName.length()).toUpperCase();}/** * 创建多级目录 *  * @param path *            目录的绝对路径 */public void createMultilevelDir(String path) {try {StringTokenizer st = new StringTokenizer(path, "/");String path1 = st.nextToken() + "/";String path2 = path1;while (st.hasMoreTokens()) {path1 = st.nextToken() + "/";path2 += path1;File inbox = new File(path2);if (!inbox.exists())inbox.mkdir();}} catch (Exception e) {System.out.println("目录创建失败" + e);e.printStackTrace();}}/** * 删除文件/目录(递归删除文件/目录) *  * @param path *            文件或文件夹的绝对路径 */public void deleteAll(String dirpath) {if (dirpath == null) {System.out.println("目录为空");} else {File path = new File(dirpath);try {if (!path.exists())return;// 目录不存在退出if (path.isFile()) // 如果是文件删除{path.delete();return;}File[] files = path.listFiles();// 如果目录中有文件递归删除文件for (int i = 0; i < files.length; i++) {deleteAll(files[i].getAbsolutePath());}path.delete();} catch (Exception e) {System.out.println("文件/目录 删除失败" + e);e.printStackTrace();}}}/** * 文件/目录 重命名 *  * @param oldPath *            原有路径（绝对路径） * @param newPath *            更新路径 * @author lyf 注：不能修改上层次的目录 */public void renameDir(String oldPath, String newPath) {File oldFile = new File(oldPath);// 文件或目录File newFile = new File(newPath);// 文件或目录try {boolean success = oldFile.renameTo(newFile);// 重命名if (!success) {System.out.println("重命名失败");} else {System.out.println("重命名成功");}} catch (RuntimeException e) {e.printStackTrace();}}}

目录处理工具类 DealWithDir.java

package com.util;import java.io.File;/** * 目录处理工具类 * */public class DealWithDir {/** * 新建目录 */public static boolean newDir(String path) throws Exception {File file = new File(path);return file.mkdirs();//创建目录}/** * 删除目录 */public static boolean deleteDir(String path) throws Exception {File file = new File(path);if (!file.exists())return false;// 目录不存在退出if (file.isFile()) // 如果是文件删除{file.delete();return false;}File[] files = file.listFiles();// 如果目录中有文件递归删除文件for (int i = 0; i < files.length; i++) {deleteDir(files[i].getAbsolutePath());}file.delete();return file.delete();//删除目录}/** * 更新目录 */public static boolean updateDir(String path, String newPath) throws Exception {File file = new File(path);File newFile = new File(newPath);return file.renameTo(newFile);}public static void main(String d[]) throws Exception{//deleteDir("d:/ff/dddf");updateDir("D:\\TOOLS\\Tomcat 6.0\\webapps\\BCCCSM\\nationalExperiment/22222", "D:\\TOOLS\\Tomcat 6.0\\webapps\\BCCCSM\\nationalExperiment/224222");}}

删除文件夹工具类 DeleteFolder.java

package com.util;import java.io.File;/** * 删除文件夹 * @createTime DSC 20, 2010 15:38 * @version 2.0 */public class DeleteFolder {// 删除文件夹// param folderPath 文件夹完整绝对路径public static void delFolder(String folderPath) {try {delAllFile(folderPath); // 删除完里面所有内容String filePath = folderPath;filePath = filePath.toString();java.io.File myFilePath = new java.io.File(filePath);myFilePath.delete(); // 删除空文件夹} catch (Exception e) {e.printStackTrace();}}// 删除指定文件夹下所有文件// param path 文件夹完整绝对路径public static boolean delAllFile(String path) {boolean flag = false;File file = new File(path);if (!file.exists()) {return flag;}if (!file.isDirectory()) {return flag;}String[] tempList = file.list();File temp = null;for (int i = 0; i < tempList.length; i++) {if (path.endsWith(File.separator)) {temp = new File(path + tempList[i]);} else {temp = new File(path + File.separator + tempList[i]);}if (temp.isFile()) {temp.delete();}if (temp.isDirectory()) {delAllFile(path + "/" + tempList[i]);// 先删除文件夹里面的文件delFolder(path + "/" + tempList[i]);// 再删除空文件夹flag = true;}}return flag;}}

文件上传工具类 UploadUtil.java

package com.util;import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;import java.io.OutputStream;import java.util.Calendar;/** * 文件上传工具类 * */public class UploadUtil {private static final int BUFFER_SIZE = 16 * 1024;//保存图片public static synchronized void copy(File src, File newFile) {try {InputStream is = null;OutputStream os = null;try {is = new BufferedInputStream(new FileInputStream(src),BUFFER_SIZE);os = new BufferedOutputStream(new FileOutputStream(newFile),BUFFER_SIZE);byte[] buffer = new byte[BUFFER_SIZE];while (is.read(buffer) > 0) {os.write(buffer);}} finally {if (null != is) {is.close();}if (null != os) {os.close();}}} catch (Exception e) {e.printStackTrace();}}/** * 返回 年号+月号+天+时+分+秒+随机码 * @return */@SuppressWarnings("static-access")public static synchronized String getTime() {Calendar calendar = Calendar.getInstance();String year = calendar.get(calendar.YEAR) + "";String month = (calendar.get(calendar.MONTH) + 1) + "";String day = calendar.get(calendar.DAY_OF_MONTH) + "";String hour = calendar.get(calendar.HOUR_OF_DAY) + "";String minute = calendar.get(calendar.MINUTE) + "";String second = calendar.get(calendar.SECOND) + "";String milliSecond = calendar.get(calendar.MILLISECOND) + "";int r = (int)(Math.random()*100000);String random = String.valueOf(r);return year + month + day + hour + minute + second + milliSecond + random+"a";}}

其他工具类MD5编码工具类 MD5Code.java

package com.util;/** * MD5编码工具类 * */public class MD5Code {static final int S11 = 7;static final int S12 = 12;static final int S13 = 17;static final int S14 = 22;static final int S21 = 5;static final int S22 = 9;static final int S23 = 14;static final int S24 = 20;static final int S31 = 4;static final int S32 = 11;static final int S33 = 16;static final int S34 = 23;static final int S41 = 6;static final int S42 = 10;static final int S43 = 15;static final int S44 = 21;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 };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 bufferpublic String digestHexStr;private byte[] digest = new byte[16];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;}public MD5Code() {md5Init();return;}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;}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));}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;}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;} elsei = 0;// /* Buffer remaining input */md5Memcpy(buffer, inbuf, index, i, inputLen - i);}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);}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];}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;}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);}}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;}public static long b2iu(byte b) {return b < 0 ? b & 0x7F + 128 : b;}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;}}

读取Config文件工具类 PropertiesConfig.java

package com.util;import java.io.BufferedInputStream;import java.io.FileInputStream;import java.io.InputStream;import java.util.Properties;/** * 读取Config文件工具类 * @version 1.0 * @since JDK 1.6 */public class PropertiesConfig {        /**      * 获取整个配置文件中的属性     * @param filePath 文件路径，即文件所在包的路径，例如：java/util/config.properties      */      public static Properties readData(String filePath) {      filePath = getRealPath(filePath);        Properties props = new Properties();          try {              InputStream in = new BufferedInputStream(new FileInputStream(filePath));              props.load(in);              in.close();              return props;          } catch (Exception e) {              e.printStackTrace();              return null;          }      }          private static String getRealPath(String filePath) {    //获取绝对路径 并截掉路径的”file:/“前缀      return PropertiesConfig.class.getResource("/" + filePath).toString().substring(6);    }}  

自动扫描FTP文件工具类 ScanFtp.java

package com.util;import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;/** * 自动扫描FTP文件工具类 * 需要定时执行 */public class ScanFtp {//服务器图片路径文件夹private String serverLocal = "D:/TOOLS/Tomcat 6.0/webapps/BCCCSM/modelforcast/";//图片上传文件夹存放路径,文件夹内应包含AGCM CSM ZS 3个子文件夹分别存放需要扫描到tomcat中的图片private String saveLocal = "D:/modelForcast/";/** * 获得远程权限 * @return */private void getFTPAdress(){//登陆成功}/** * 开始扫描 * @throws IOException  */private void scan() throws IOException {this.getFTPAdress();File file = new File(saveLocal + "AGCM");  //打开AGCMFile[] array = file.listFiles();    String fileName;    File fileTemp;    for(int i = 0; i < array.length; i++){    if(array[i].isFile()) {            fileTemp = array[i];            fileName = fileTemp.getName();//取出文件名            if (!fileName.equals("humbs.db")) {    this.saveFile(fileTemp, 1);//分析每一个文件名字并存储    System.out.println(fileName + " saved");            }            }           }        file = new File(saveLocal + "CSM");  //打开CSM    array = file.listFiles();    for(int i = 0; i < array.length; i++){    if(array[i].isFile()) {            fileTemp = array[i];            fileName = fileTemp.getName();//取出文件名            if (!fileName.equals("humbs.db")) {    this.saveFile(fileTemp, 2);//分析每一个文件名字并存储    System.out.println(fileName + " saved");            }            }           }        file = new File(saveLocal + "ZS");  //打开ZS    array = file.listFiles();    for(int i = 0; i < array.length; i++){    if(array[i].isFile()) {            fileTemp = array[i];            fileName = fileTemp.getName();//取出文件名            if (!fileName.equals("humbs.db")) {    this.saveFile(fileTemp, 3);//分析每一个文件名字并存储    System.out.println(fileName + " saved");            }            }           }    }/** * 开始执行 * @throws IOException  */public void execute() throws IOException{scan();//开始扫描}/** * 按类型存储 * @param file * @param type * @throws IOException  */private void saveFile(File file, int type) throws IOException {String fileName = file.getName();//类型A C 和 指数3种String year = fileName.substring(1, 5);//获得发布年份String date = fileName.substring(5, 9);//获得发布日期包含月日String var = null;//获得变量名字String dir = serverLocal;//存储目录名字if (type == 1 ) {var = fileName.substring(11, 15);dir = dir + "AGCM/" + var + "/" + year + "/" + date;} else if(type == 2) {var = fileName.substring(11, 15);dir = dir + "CSM/" + var + "/" + year + "/" + date;} else {var = fileName.substring(11, 15);//指数的暂时没处理dir = dir + "ZS/" + var + "/" + year + "/" + date;}//判断是否存在这样的目录没有就自动创建File savePath = new File(dir);if(!savePath.exists()) {savePath.mkdirs();}File saveFile = new File(dir + "/" + fileName);if(!saveFile.exists()){//如果不存在,就存文件FileInputStream fis = null;//这里用本地复制暂时代替FTPFileOutputStream fos =null;BufferedInputStream bis =null;BufferedOutputStream bos =null;  int c;fis = new FileInputStream(file);bis = new BufferedInputStream(fis);fos = new FileOutputStream(dir + "/" + fileName);bos = new BufferedOutputStream(fos);while((c = bis.read())!= -1)bos.write(c);bos.flush();    if(bos != null) bos.close();    if(bis != null) bis.close();    if(fos != null) fos.close();    if(fis != null) fos.close();} else {System.out.println("文件已经存在,不进行存储,可清理当前文件.");}}/** * 测试方法 * @param argv * @throws IOException  */public static void main(String argv[])  {ScanFtp s = new ScanFtp();try {s.scan();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}

邮件发送工具类 SendMail.java

package com.util;import org.apache.commons.mail.EmailException;import org.apache.commons.mail.SimpleEmail;/** * 邮件发送工具类 */public class SendMail {private String hostName;//设置smtp服务器private String sendMailAddress;//设置发送地址private String mailPassword;//设置密码private boolean TLS = false;//设置是否需要TLS登录private String[] getMailAddress;//设置接收地址sprivate String mailTitle;//设置标题private String mailContent;//设置邮件内容public  void  send(){SimpleEmail email = new SimpleEmail();email.setTLS(TLS); //是否TLS校验，，某些邮箱需要TLS安全校验，同理有SSL校验  email.setHostName(hostName);try {email.setFrom(sendMailAddress, sendMailAddress);email.setAuthentication(sendMailAddress, mailPassword);email.setCharset("utf-8");//解决中文乱码问题email.setSubject(mailTitle); //标题       email.setMsg(mailContent);//内容  for(int i = 0; i < getMailAddress.length; ++i){email.addTo(getMailAddress[i]); //接收方email.send();}    } catch (EmailException e) {//e.printStackTrace();}}public String getHostName() {return hostName;}public void setHostName(String hostName) {this.hostName = hostName;}public String getSendMailAddress() {return sendMailAddress;}public void setSendMailAddress(String sendMailAddress) {this.sendMailAddress = sendMailAddress;}public String getMailPassword() {return mailPassword;}public void setMailPassword(String mailPassword) {this.mailPassword = mailPassword;}public boolean isTLS() {return TLS;}public void setTLS(boolean tls) {TLS = tls;}public String[] getGetMailAddress() {return getMailAddress;}public void setGetMailAddress(String[] getMailAddress) {this.getMailAddress = getMailAddress;}public String getMailTitle() {return mailTitle;}public void setMailTitle(String mailTitle) {this.mailTitle = mailTitle;}public String getMailContent() {return mailContent;}public void setMailContent(String mailContent) {this.mailContent = mailContent;}}

分页工具类 SharePager.java

package com.util;/** * 分页工具类 * */public class SharePager {private int totalRows; //总行数    private int pageSize = 20; //每页显示的行数      private int currentPage; //当前页号    private int totalPages; //总页数     private int startRow; //当前页在数据库中的起始行     /**     * 默认构造函数     */    public SharePager()     {          }            /**默认每页10行     * @param totalRows      */      public SharePager(int totalRows)     {          this.totalRows = totalRows;          totalPages =(int) Math.ceil((double)totalRows / (double)pageSize);          startRow = 0;      }                  /**可自定义每页显示多少页     * @param totalRows      * @param pageSize      */      public SharePager(int totalRows, int pageSize)     {          this.totalRows = totalRows;          this.pageSize = pageSize;         if(this.pageSize<1)         this.pageSize=1;        else if(pageSize>20)        this.pageSize=20;//        if(this.pageSize>totalRows){//        this.pageSize=(int)totalRows;//        }                    totalPages =(int) Math.ceil((double)totalRows / (double)this.pageSize);           currentPage = 1;          startRow = 0;      }            /**     * 跳转到首页     */    public void first()     {          this.currentPage = 1;          this.startRow = 0;     }          /**     * 跳转到上一页     */    public void previous()     {          if (currentPage == 1)         {              return;          }          currentPage--;          startRow = (currentPage-1) * pageSize;     }          /**     * 跳转到下一页     */    public void next()     {          if (currentPage < totalPages)        {              currentPage++;          }          startRow = (currentPage-1) * pageSize;      }          /**     *跳转到尾页     */    public void last()     {          this.currentPage = totalPages;          if(currentPage<1){        currentPage = 1;        }        this.startRow = (currentPage-1) * this.pageSize;        totalPages =(int) Math.ceil((double)totalRows / (double)this.pageSize);               }          /**     * 跳转到指定页     * @param currentPage指定的页     */    public void refresh(int currentPage)     {          if(currentPage < 0)    {    first();    }        if (currentPage > totalPages)         {              last();          }else{        this.currentPage = currentPage;        this.startRow = (currentPage-1) * this.pageSize;          }     }                 public int getStartRow()    {          return startRow;      }          public int getTotalPages()    {          return totalPages;      }          public int getCurrentPage()    {          return currentPage;      }          public int getPageSize()     {          return pageSize;      }          public void setTotalRows(int totalRows)     {          this.totalRows = totalRows;      }          public void setStartRow(int startRow)    {          this.startRow = startRow;      }          public void setTotalPages(int totalPages)     {          this.totalPages = totalPages;      }          public void setCurrentPage(int currentPage)     {          this.currentPage = currentPage;      }         public void setPageSize(int pageSize)     {          this.pageSize = pageSize;      }          public int getTotalRows()     {          return totalRows;      }  }

@Wentasy 博文仅供参考，欢迎大家来访。如有错误之处，希望批评指正。原创博文如需转载请注明出处，谢谢 :) [CSDN博客]

1楼miliermili昨天 16:25

蛮不错的

Re: Wentasy昨天 16:50

回复miliermilin多谢。O(∩_∩)O~