toolskit.java

数据刷新程序,用于不同数据库之间德数据传递

package com.main.apps.common;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

import com.main.apps.control.Config;

public class ToolsKit
{
 
	public static String unzip(String zipFile, String destDir)
	{
		/* 压缩文件名为空，返回NULL */
		if (zipFile == null)
		{
			return null;
		}

		File destFile = new File(destDir); // 用来处理文件夹
		if (!destFile.exists())
		{
			destFile.mkdirs(); // 如果目录不存在，创建之
		}
		String fileName = "";
		FileOutputStream fileOut = null; // 用来处理文件
		ZipEntry entry = null;
		byte[] bytes = new byte[READ_BYTES]; // 缓冲区
		int read = 0; // 每次读写的字节数
		try
		{
			ZipInputStream zin = new ZipInputStream(new FileInputStream(zipFile));

			while ((entry = zin.getNextEntry()) != null)
			{
				if (entry.isDirectory()) // 目录，需要创建
				{
					/* 创建目录 */
					fileName = destDir + File.separatorChar + entry.getName();
					destFile = new File(fileName);
					destFile.mkdir();
				}
				else
				// 读写文件
				{
					fileName = destDir + File.separatorChar + entry.getName();
					fileOut = new FileOutputStream(fileName);
					while ((read = zin.read(bytes, 0, READ_BYTES)) > 0)
					{
						fileOut.write(bytes, 0, read);
					}
					fileOut.close();
				}
				zin.closeEntry();
			}
			zin.close();
		}
		catch (IOException ioe)
		{
			FileUtil.printError(ioe, "解压文件" + zipFile + "出现异常", Config.errorFile);
		}

		return destDir;
	}

	/**
	 * 拷贝文件并删除源文件
	 * 
	 * @param srcFileName,
	 *            源文件名
	 * @param destFileName,
	 *            目标文件名
	 */
	public static void move(String srcFileName, String destFileName)
	{
		if (srcFileName == null || destFileName == null)
			return;

		File srcFile = new File(srcFileName);
		File destFile = new File(destFileName);
		try
		{
			if (srcFile.exists() && srcFile.canRead()) // 源文件存在并可读
			{
				FileInputStream in = new FileInputStream(srcFile);
				try
				{
					byte[] bytes = new byte[1024]; // 缓冲区
					int read = 0; // 每次读写的字节数
					FileOutputStream out = new FileOutputStream(destFile);
					try
					{
						while ((read = in.read(bytes, 0, bytes.length)) != -1)
							out.write(bytes, 0, read);
						out.flush();
					}
					catch (Exception ex)
					{
						throw ex;
					}
					finally
					{
						out.close();
					}
				}
				catch (Exception ex)
				{
					throw ex;
				}
				finally
				{
					in.close();
					srcFile.delete();
				}
			}
		}
		catch (FileNotFoundException fnfe)
		{
			FileUtil.printError(fnfe, "找不到文件", Config.errorFile);
		}
		catch (Exception ioe)
		{
			FileUtil.printError(ioe, "读写文件出错", Config.errorFile);
		}
	}

	/**
	 * 处理wml中的文件路径
	 * 
	 * @param wmlName,
	 *            wml文件名
	 * @param dir,
	 *            根路径
	 */
	public static void handleWml(String wmlName, String url)
	{
		StringBuffer buffer = new StringBuffer();
		String lineIn = "";
		int index = 0;
		try
		{
			// 先把文本读到字符缓冲里
			BufferedReader in = new BufferedReader(new FileReader(wmlName));
			while ((lineIn = in.readLine()) != null)
			{
				index = lineIn.indexOf("<img");
				if (index != -1) // 是图片标签了，要处理
				{
					index = lineIn.indexOf("src", index); // 找到资源属性
					if (index != -1)
					{
						int firstIndex = lineIn.indexOf("\"", index) + 1;
						int lastIndex = lineIn.indexOf("\"", firstIndex);
						String fileName = lineIn.substring(firstIndex, lastIndex);
						if (fileName == null || fileName.equals(""))
						{
							// do nothing
						}
						else
						// 得到图片文件名
						{
							// 
							index = fileName.lastIndexOf('/');
							if (index != -1)
							{
								fileName = fileName.substring(index + 1);
							}
							StringBuffer sb = new StringBuffer();
							sb.append(url);
							sb.append(File.separatorChar);
							sb.append(fileName);
							fileName = sb.toString();
							sb.setLength(0);
							sb.append(lineIn);
							sb.replace(firstIndex, lastIndex, fileName);
							lineIn = sb.toString();
						}
					}
				}

				buffer.append(lineIn);
				buffer.append("\r\n");
			}
			in.close();
			// 写出文件
			FileWriter out = new FileWriter(wmlName, false);
			out.write(buffer.toString());
			out.close();
		}
		catch (IOException ioe)
		{
			FileUtil.printError(ioe, "读写文件出错", Config.errorFile);
		}
	}

	public static void main(String[] args)
	{
		ToolsKit.handleWml("E:/xx.wml", "E:/test/xml/sss");
	}

	private static final int READ_BYTES = 1024;
}