Ronald 的天空

/**
 * 根据文件得到该文件中文本内容的编码
 * 
 * @param file 要分析的文件
 */
public static String getCharset(File file) {
        String charset = "GBK"; // 默认编码
        byte[] first3Bytes = new byte[3];
        try {
            boolean checked = false;
            BufferedInputStream bis = new BufferedInputStream(
                  new FileInputStream(file));
            bis.mark(0);
            int read = bis.read(first3Bytes, 0, 3);
            if (read == -1)
                return charset;
            if (first3Bytes[0] == (byte) 0xFF && first3Bytes[1] == (byte) 0xFE) {
                charset = "UTF-16LE";
                checked = true;
            } else if (first3Bytes[0] == (byte) 0xFE && first3Bytes[1]
                == (byte) 0xFF) {
                charset = "UTF-16BE";
                checked = true;
            } else if (first3Bytes[0] == (byte) 0xEF && first3Bytes[1]
                    == (byte) 0xBB
                    && first3Bytes[2] == (byte) 0xBF) {
                charset = "UTF-8";
                checked = true;
            }
            bis.reset();
            if (!checked) {
                int loc = 0;
                while ((read = bis.read()) != -1) {
                    loc++;
                    if (read >= 0xF0)
                        break;
                    //单独出现BF以下的，也算是GBK
                    if (0x80 <= read && read <= 0xBF)
                        break;
                    if (0xC0 <= read && read <= 0xDF) {
                        read = bis.read();
                        if (0x80 <= read && read <= 0xBF)// 双字节 (0xC0 - 0xDF)
                            // (0x80 -
                            // 0xBF),也可能在GB编码内
                            continue;
                        else
                            break;
                     // 也有可能出错，但是几率较小
                    } else if (0xE0 <= read && read <= 0xEF) {
                        read = bis.read();
                        if (0x80 <= read && read <= 0xBF) {
                            read = bis.read();
                            if (0x80 <= read && read <= 0xBF) {
                                charset = "UTF-8";
                                break;
                            } else
                                break;
                        } else
                            break;
                    }
                }
                System.out.println(loc + " " + Integer.toHexString(read));
            }
            bis.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return charset;
}

package rbase.app.nowscore.util;
 
import java.io.InputStream;
 
/**
 * Android Zip压缩解压缩
 * @author ronald (www.r-base.net)
 */
public final class ZipUtil {
  private ZipUtil(){
  }
 
  /**
   * 取得压缩包中的 文件列表(文件夹,文件自选)
   * @param zipFileString		压缩包名字
   * @param bContainFolder	是否包括 文件夹
   * @param bContainFile		是否包括 文件
   * @return
   * @throws Exception
   */
  public static java.util.List<java.io.File> getFileList(String zipFileString, boolean bContainFolder, 
          boolean bContainFile)throws Exception {
    java.util.List<java.io.File> fileList = new java.util.ArrayList<java.io.File>();
    java.util.zip.ZipInputStream inZip = 
                     new java.util.zip.ZipInputStream(new java.io.FileInputStream(zipFileString));
    java.util.zip.ZipEntry zipEntry;
    String szName = "";		
    while ((zipEntry = inZip.getNextEntry()) != null) {
	szName = zipEntry.getName();
	if (zipEntry.isDirectory()) {
	  // get the folder name of the widget
	  szName = szName.substring(0, szName.length() - 1);
	  java.io.File folder = new java.io.File(szName);
	  if (bContainFolder) {
	    fileList.add(folder);
	  }
        } else {
	  java.io.File file = new java.io.File(szName);
	  if (bContainFile) {
	    fileList.add(file);
	  }
	}
    }//end of while		
    inZip.close();
    return fileList;
  }
 
  /**
   * 返回压缩包中的文件InputStream
   * 
   * @param zipFilePath		压缩文件的名字
   * @param fileString	解压文件的名字
   * @return InputStream
   * @throws Exception
   */
public static java.io.InputStream upZip(String zipFilePath, String fileString)throws Exception {
	java.util.zip.ZipFile zipFile = new java.util.zip.ZipFile(zipFilePath);
	java.util.zip.ZipEntry zipEntry = zipFile.getEntry(fileString);
 
	return zipFile.getInputStream(zipEntry);
}
 
/**
 * 解压一个压缩文档 到指定位置
 * @param zipFileString	压缩包的名字
 * @param outPathString	指定的路径
 * @throws Exception
 */
public static void unZipFolder(InputStream input, String outPathString)throws Exception {
	java.util.zip.ZipInputStream inZip = new java.util.zip.ZipInputStream(input);
	java.util.zip.ZipEntry zipEntry = null;
	String szName = "";
 
	while ((zipEntry = inZip.getNextEntry()) != null) {
		szName = zipEntry.getName();
 
		if (zipEntry.isDirectory()) {
		  // get the folder name of the widget
		  szName = szName.substring(0, szName.length() - 1);
		  java.io.File folder = new java.io.File(outPathString + java.io.File.separator + szName);
		  folder.mkdirs();
		} else {
		  java.io.File file = new java.io.File(outPathString + java.io.File.separator + szName);
		  file.createNewFile();
		  // get the output stream of the file
		  java.io.FileOutputStream out = new java.io.FileOutputStream(file);
		  int len;
		  byte[] buffer = new byte[1024];
		  // read (len) bytes into buffer
		  while ((len = inZip.read(buffer)) != -1) {
			// write (len) byte from buffer at the position 0
			out.write(buffer, 0, len);
			out.flush();
		  }
		  out.close();
		}
	}//end of while
		inZip.close();
	}
 
	/**
	 * 解压一个压缩文档 到指定位置
	 * @param zipFileString	压缩包的名字
	 * @param outPathString	指定的路径
	 * @throws Exception
	 */
	public static void unZipFolder(String zipFileString, String outPathString)throws Exception {
		unZipFolder(new java.io.FileInputStream(zipFileString),outPathString);
	}//end of func
 
 
	/**
	 * 压缩文件,文件夹
	 * 
	 * @param srcFilePath	要压缩的文件/文件夹名字
	 * @param zipFilePath	指定压缩的目的和名字
	 * @throws Exception
	 */
	public static void zipFolder(String srcFilePath, String zipFilePath)throws Exception {
	  //创建Zip包
	  java.util.zip.ZipOutputStream outZip = 
              new java.util.zip.ZipOutputStream(new java.io.FileOutputStream(zipFilePath));
 
	  //打开要输出的文件
	  java.io.File file = new java.io.File(srcFilePath);
 
	  //压缩
	  zipFiles(file.getParent()+java.io.File.separator, file.getName(), outZip);
 
	  //完成,关闭
	  outZip.finish();
          outZip.close();
 
        }//end of func
 
	/**
	 * 压缩文件
	 * @param folderPath
	 * @param filePath
	 * @param zipOut
	 * @throws Exception
	 */
	private static void zipFiles(String folderPath, String filePath, 
                     java.util.zip.ZipOutputStream zipOut)throws Exception{
	  if(zipOut == null){
	    return;
	  }
 
	  java.io.File file = new java.io.File(folderPath+filePath);
 
	  //判断是不是文件
	  if (file.isFile()) {
	    java.util.zip.ZipEntry zipEntry =  new java.util.zip.ZipEntry(filePath);
	    java.io.FileInputStream inputStream = new java.io.FileInputStream(file);
	    zipOut.putNextEntry(zipEntry);
 
	    int len;
	    byte[] buffer = new byte[4096];
 
	    while((len=inputStream.read(buffer)) != -1) {
	 	zipOut.write(buffer, 0, len);
	    }
 
	     zipOut.closeEntry();
	  } else {
	   //文件夹的方式,获取文件夹下的子文件
	   String fileList[] = file.list();
 
	   //如果没有子文件, 则添加进去即可
	   if (fileList.length <= 0) {
	  	java.util.zip.ZipEntry zipEntry =  
                       new java.util.zip.ZipEntry(filePath+java.io.File.separator);
		zipOut.putNextEntry(zipEntry);
		zipOut.closeEntry();				
	   }
 
	   //如果有子文件, 遍历子文件
	   for (int i = 0; i < fileList.length; i++) {
		zipFiles(folderPath, filePath+java.io.File.separator+fileList[i], zipOut);
	   }//end of for
 
         }//end of if
 
     }//end of func
}

import java.io.File;
import java.text.MessageFormat;
 
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.FileEntity;
import org.apache.http.impl.client.DefaultHttpClient;
 
import android.util.Log;
 
/**
 * 上传的url,f 为要上传的文件
 * @url 上传的目标url
 * @f 要上传的文件
 * @return 成功返回true,失败返回false
*/
public static boolean postFile(String url, File f) {
  if(url == null || f == null){
    return false;
  }
  HttpClient client = new DefaultHttpClient();
  HttpPost httpPost = new HttpPost(url);
  HttpResponse response = null;
  try {
    FileEntity entity = new FileEntity(f, "binary/octet-stream");
    httpPost.setEntity(entity);
    response = client.execute(httpPost);
  } catch (Exception e) {
  } finally {
  }
 
  // 判断上传的状态和打印调试信息
  if (response != null
    && response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
    // 打印调试信息,上传的url和上传的文件大小
    Log.d("r-base.net",
       MessageFormat.format("upload xml success! url = [{0}],
       file size = [{1}]",url,f.length()));
    return true;
  }
  return false;
}

public String getFile(HttpServletRequest request){
  InputSteam in = request.getInputStream();
  org.apache.commons.io.IOUtils.copy(in,new OutputStream("c:/upload_file.file"));
}