smartupload.java

实现图书管理

			response.getOutputStream().write(abyte0, 0, j);
		}
		fileinputstream.close();
	}

	/**
	 * downloadField Downloads a field from a database's table
	 * 
	 * @param rs
	 *            the resulstet
	 * @param columnName
	 *            the column name
	 * @param contentType
	 *            the content type
	 * @param destFileName
	 *            the suggested file name
	 * @throws ServletException
	 * @throws IOException
	 * @throws SQLException
	 */
	public void downloadField(ResultSet rs, String columnName,
			String contentType, String destFileName) throws ServletException,
			IOException, SQLException {
		if (rs == null) {
			throw new IllegalArgumentException(
					"The RecordSet cannot be null (1045).");
		}
		if (columnName == null) {
			throw new IllegalArgumentException(
					"The columnName cannot be null (1050).");
		}
		if (columnName.length() == 0) {
			throw new IllegalArgumentException(
					"The columnName cannot be empty (1055).");
		}
		byte abyte0[] = rs.getBytes(columnName);
		if (contentType == null) {
			response.setContentType("application/x-msdownload");
		} else {
			if (contentType.length() == 0) {
				response.setContentType("application/x-msdownload");
			} else {
				response.setContentType(contentType);
			}
		}
		response.setContentLength(abyte0.length);
		if (destFileName == null) {
			response.setHeader("Content-Disposition", "attachment;");
		} else {
			if (destFileName.length() == 0) {
				response.setHeader("Content-Disposition", "attachment;");
			} else {
				response.setHeader("Content-Disposition",
						"attachment; filename=" + destFileName);
			}
		}
		response.getOutputStream().write(abyte0, 0, abyte0.length);
	}

	/**
	 * Save a field from a database's table to a file
	 * 
	 * @param rs
	 *            the resulstet
	 * @param columnName
	 *            the column name
	 * @param destFileName
	 *            the suggested file name
	 * @throws ServletException
	 * @throws IOException
	 * @throws SmartUploadException
	 * @throws SQLException
	 */
	public void fieldToFile(ResultSet rs, String columnName, String destFileName)
			throws ServletException, IOException, SmartUploadException,
			SQLException {
		try {
			if (application.getRealPath(destFileName) != null) {
				destFileName = application.getRealPath(destFileName);
			}
			InputStream inputstream = rs.getBinaryStream(columnName);
			FileOutputStream fileoutputstream = new FileOutputStream(
					destFileName);
			int i;
			while ((i = inputstream.read()) != -1) {
				fileoutputstream.write(i);
			}
			fileoutputstream.close();
		} catch (Exception exception) {
			throw new SmartUploadException(
					"Unable to save file from the DataBase (1020).");
		}
	}

	private String getDataFieldValue(String s, String s1) {
		String s2 = "";
		String s3 = "";
		int i = 0;
		s2 = s1 + "=" + '"';
		i = s.indexOf(s2);
		if (i > 0) {
			int j = i + s2.length();
			int k = j;
			s2 = "\"";
			int l = s.indexOf(s2, j);
			if (k > 0 && l > 0) {
				s3 = s.substring(k, l);
			}
		}
		return s3;
	}

	private String getFileExt(String s) {
		String s1; // = new String();
		int i = 0;
		int j = 0;
		if (s == null) {
			return null;
		}
		i = s.lastIndexOf('.') + 1;
		j = s.length();
		s1 = s.substring(i, j);
		if (s.lastIndexOf('.') > 0) {
			return s1;
		} else {
			return "";
		}
	}

	private String getContentType(String s) {
		String s1 = ""; // = new String();
		String s2 = ""; // = new String();
		int i = 0;
		// boolean flag = false;
		s1 = "Content-Type:";
		i = s.indexOf(s1) + s1.length();
		if (i != -1) {
			int j = s.length();
			s2 = s.substring(i, j);
		}
		return s2;
	}

	private String getTypeMIME(String s) {
		// String s1 = new String();
		int i = 0;
		i = s.indexOf("/");
		if (i != -1) {
			return s.substring(1, i);
		} else {
			return s;
		}
	}

	private String getSubTypeMIME(String s) {
		// String s1 = new String();
		// boolean flag = false;
		int i = 0;
		i = s.indexOf("/") + 1;
		if (i != -1) {
			int j = s.length();
			return s.substring(i, j);
		} else {
			return s;
		}
	}

	private String getContentDisp(String s) {
		// String s1 = new String();
		String s1 = "";
		int i = 0;
		int j = 0;
		i = s.indexOf(":") + 1;
		j = s.indexOf(";");
		s1 = s.substring(i, j);
		return s1;
	}

	private void getDataSection() {
		// boolean flag = false;
		// String s = "";
		// String s = new String();
		int i = currentIndex;
		int j = 0;
		int k = boundary.length();
		startData = currentIndex;
		endData = 0;
		while (i < totalBytes) {
			if (binArray[i] == (byte) boundary.charAt(j)) {
				if (j == k - 1) {
					endData = ((i - k) + 1) - 3;
					break;
				}
				i++;
				j++;
			} else {
				i++;
				j = 0;
			}
		}
		currentIndex = endData + k + 3;
	}

	private String getDataHeader() {
		// boolean flag = false;
		int i = currentIndex;
		int j = 0;
		for (boolean flag1 = false; !flag1;) {
			if (binArray[currentIndex] == 13
					&& binArray[currentIndex + 2] == 13) {
				flag1 = true;
				j = currentIndex - 1;
				currentIndex = currentIndex + 2;
			} else {
				currentIndex++;
			}
		}

		String s = new String(binArray, i, (j - i) + 1);
		return s;
	}

	private String getFileName(String s) {
		// String s1 = ""; // = new String();
		// String s2 = ""; // = new String();
		// boolean flag = false;
		// boolean flag1 = false;
		// boolean flag2 = false;
		int i = 0;
		i = s.lastIndexOf('/');
		if (i != -1) {
			return s.substring(i + 1, s.length());
		}
		i = s.lastIndexOf('\\');
		if (i != -1) {
			return s.substring(i + 1, s.length());
		} else {
			return s;
		}
	}

	/**
	 * Set the list of denied files. Contains the list of file's extensions
	 * which are denied to be uploaded. If this list is empty then no files are
	 * denied. All the files with an extension in the DeniedFileslist are denied
	 * even if they are in the AllowedFilesList.
	 * 
	 * In order to deny the files without an extension the list must contain two
	 * commas ",,". By defect this property is empty.
	 * 
	 * @param deniedFilesList
	 *            The list of denied files
	 * @throws ServletException
	 * @throws IOException
	 * @throws SQLException
	 */
	public void setDeniedFilesList(String deniedFilesList)
			throws ServletException, IOException, SQLException {
		if (deniedFilesList != null) {
			String s2 = "";
			for (int i = 0; i < deniedFilesList.length(); i++) {
				if (deniedFilesList.charAt(i) == ',') {
					if (!this.deniedFilesList.contains(s2)) {
						this.deniedFilesList.addElement(s2);
					}
					s2 = "";
				} else {
					s2 = s2 + deniedFilesList.charAt(i);
				}
			}
			if (!s2.equals("")) {
				this.deniedFilesList.addElement(s2);
			}
		} else {
			this.deniedFilesList = null;
		}
	}

	/**
	 * Set the list of allowed files. Contains the list of file's extensions
	 * which are allowed to be uploaded. If this list is empty then all files
	 * are allowed. If the list is not empty then only the files with a
	 * specified extension are allowed. In order to allow the files without
	 * extension list must contain two commas ",,". By defect this property is
	 * empty.
	 * 
	 * @param allowedFilesList
	 *            the list of allowed files
	 */
	public void setAllowedFilesList(String allowedFilesList) {
		if (allowedFilesList != null) {
			String s2 = "";
			for (int i = 0; i < allowedFilesList.length(); i++) {
				if (allowedFilesList.charAt(i) == ',') {
					if (!this.allowedFilesList.contains(s2)) {
						this.allowedFilesList.addElement(s2);
					}
					s2 = "";
				} else {
					s2 = s2 + allowedFilesList.charAt(i);
				}
			}
			if (!s2.equals("")) {
				this.allowedFilesList.addElement(s2);
			}
		} else {
			this.allowedFilesList = null;
		}
	}

	/**
	 * Sets if the component deny physical path. Prevents to access a path other
	 * that a virtual path of the Web Server. By defect this property is false.
	 * 
	 * @param deny
	 *            is a boolean
	 */
	public void setDenyPhysicalPath(boolean deny) {
		denyPhysicalPath = deny;
	}

	/**
	 * Sets if the component force physical path. By default, the component
	 * consider a path as a virtual path. To oblige the component to consider
	 * all path as physical path, set this property to true.
	 * 
	 * @param force
	 *            The boolean value
	 */
	public void setForcePhysicalPath(boolean force) {
	}

	/**
	 * Sets the Content Disposition. Contains the string of the Content
	 * Disposition Hearders for the MIME Type.
	 * 
	 * @param contentDisposition
	 *            The content disposition
	 */
	public void setContentDisposition(String contentDisposition) {
		this.contentDisposition = contentDisposition;
	}

	/**
	 * Sets the total maximum file size. Is the maximum allowed size of all
	 * files to be uploaded. If this value is null then there is no limit for
	 * the total file's size uploaded. By defect this property is null.
	 * 
	 * @param totalMaxFileSize
	 *            the total max file size
	 */
	public void setTotalMaxFileSize(long totalMaxFileSize) {
		this.totalMaxFileSize = totalMaxFileSize;
	}

	/**
	 * Sets the maximum file size. Is the maximum allowed size of one file to be
	 * uploaded. If this value is null then there is no limit for the file's
	 * size uploaded. By defect this property is null.
	 * 
	 * @param maxFileSize
	 *            the max file size
	 */
	public void setMaxFileSize(long maxFileSize) {
		this.maxFileSize = maxFileSize;
	}

	protected String getPhysicalPath(String s, int i) throws IOException {
		String s1 = "";
		String s2 = "";
		String s3 = "";
		boolean flag = false;
		s3 = System.getProperty("file.separator");
		if (s == null) {
			throw new IllegalArgumentException(
					"There is no specified destination file (1140).");
		}
		if (s.equals("")) {
			throw new IllegalArgumentException(
					"There is no specified destination file (1140).");
		}
		if (s.lastIndexOf("\\") >= 0) {
			s1 = s.substring(0, s.lastIndexOf("\\"));
			s2 = s.substring(s.lastIndexOf("\\") + 1);
		}
		if (s.lastIndexOf("/") >= 0) {
			s1 = s.substring(0, s.lastIndexOf("/"));
			s2 = s.substring(s.lastIndexOf("/") + 1);
		}
		s1 = s1.length() != 0 ? s1 : "/";
		java.io.File file = new java.io.File(s1);
		if (file.exists()) {
			flag = true;
		}
		if (i == 0) {
			if (isVirtual(s1)) {
				s1 = application.getRealPath(s1);
				if (s1.endsWith(s3)) {
					s1 = s1 + s2;
				} else {
					s1 = s1 + s3 + s2;
				}
				return s1;
			}
			if (flag) {
				if (denyPhysicalPath) {
					throw new IllegalArgumentException(
							"Physical path is denied (1125).");
				} else {
					return s;
				}
			} else {
				throw new IllegalArgumentException(
						"This path does not exist (1135).");
			}
		}
		if (i == 1) {
			if (isVirtual(s1)) {
				s1 = application.getRealPath(s1);
				if (s1.endsWith(s3)) {
					s1 = s1 + s2;
				} else {
					s1 = s1 + s3 + s2;
				}
				return s1;
			}
			if (flag) {
				throw new IllegalArgumentException(
						"The path is not a virtual path.");
			} else {
				throw new IllegalArgumentException(
						"This path does not exist (1135).");
			}
		}
		if (i == 2) {
			if (flag) {
				if (denyPhysicalPath) {
					throw new IllegalArgumentException(
							"Physical path is denied (1125).");
				} else {
					return s;
				}
			}
			if (isVirtual(s1)) {
				throw new IllegalArgumentException(
						"The path is not a physical path.");
			} else {
				throw new IllegalArgumentException(
						"This path does not exist (1135).");
			}
		} else {
			return null;
		}
	}

	/**
	 * The uploadInFile method creates a new file with all data of the POST
	 * form. This method can't be called if the upload() method is already
	 * called.
	 * 
	 * @param destFilePathName
	 *            The path of the file
	 * @throws IOException
	 * @throws SmartUploadException
	 */
	public void uploadInFile(String destFilePathName) throws IOException,
			SmartUploadException {
		int i = 0;
		int j = 0;
		if (destFilePathName == null) {
			throw new IllegalArgumentException(
					"There is no specified destination file (1025).");
		}
		if (destFilePathName.length() == 0) {
			throw new IllegalArgumentException(
					"There is no specified destination file (1025).");
		}
		if (!isVirtual(destFilePathName) && denyPhysicalPath) {
			throw new SecurityException("Physical path is denied (1035).");
		}
		i = request.getContentLength();
		binArray = new byte[i];
		int k;
		for (; j < i; j += k) {
			try {
				k = request.getInputStream().read(binArray, j, i - j);
			} catch (Exception exception) {
				throw new SmartUploadException("Unable to upload.");
			}
		}

		if (isVirtual(destFilePathName)) {
			destFilePathName = application.getRealPath(destFilePathName);
		}
		try {
			java.io.File file = new java.io.File(destFilePathName);
			FileOutputStream fileoutputstream = new FileOutputStream(file);
			fileoutputstream.write(binArray);
			fileoutputstream.close();
		} catch (Exception exception1) {
			throw new SmartUploadException(
					"The Form cannot be saved in the specified file (1030).");
		}
	}

	private boolean isVirtual(String s) {
		if (application.getRealPath(s) != null) {
			java.io.File file = new java.io.File(application.getRealPath(s));
			return file.exists();
		} else {
			return false;
		}
	}

	public static String encodeString(String s) throws UnsupportedEncodingException {
		String str = URLEncoder.encode(s, "UTF-8");
        str = str.replace("+", "%20");
        if (str.length() > 150) {
            str = new String(s.getBytes("GB2312"), "ISO8859-1");
            str = str.replace(" ", "%20");
        }
        return str;
	}
}