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\\Test
		newDir.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 buffer


	public 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;
		} else
			i = 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AGCM
		File[] 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FTP
			FileOutputStream 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 block
			e.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s
	private 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]