项目经验分享——Java常用工具类集合

太过爱你忘了你带给我的痛 2022-03-24 21:28 234阅读 0赞

## 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;  
        }  
    }

<table style="border-bottom:#48c5db 5px double; border-left:#48c5db 5px double; padding-bottom:5px; background-color:black; padding-left:5px; border-spacing:0; width:100%; padding-right:30px; height:90px; border-top:#48c5db 5px double; border-right:#48c5db 5px double; padding-top:5px"> 
 <tbody> 
  <tr> 
   <td><img alt="katoon" src="https://img-my.csdn.net/uploads/201301/06/1357456262_5409.jpg" style="height:80px"></td> 
   <td style="text-align:right"><a title="新浪微博求粉 ^_^" href="http://weibo.com/wentasy" rel="nofollow"><img title="新浪微博求粉 ^_^" alt="Sina" src="https://img-my.csdn.net/uploads/201210/26/1351182273_5476.png.thumb.jpg" style="height:40px"></a> &nbsp;<a title="我的CSDN博客——HelloWorld" href="http://blog.csdn.net/Wentasy" rel="nofollow"><img title="我的CSDN博客——HelloWorld" alt="CSDN" src="https://img-my.csdn.net/uploads/201210/26/1351182268_8254.png.thumb.jpg" style="height:40px"></a></td> 
  </tr> 
  <tr> 
   <td style="text-align:right; font-family:microsoft yahei; color:white; font-size:12px"> <a title="我的CSDN博客——HelloWorld" href="http://blog.csdn.net/Wentasy" rel="nofollow">@Wentasy</a> 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]</td> 
  </tr> 
 </tbody> 
</table>