UploadFile

You can upload files from your PC to the Wiki server. Use the Upload a File link in the left menu to get started. You can reference uploaded files with the simple form of the Markup link. For example, if we upload "ProjectPlan.doc" we can create a link like [ProjectPlan.doc].
The Wiki removes all punctuation and spaces from the fileid, so My Project-01.ppt will be stored as MyProject01.ppt.

Uploaded files go into the same NameSpace as the page from which Upload A File is launched.

文件上传参考：http://commons.apache.org/fileupload/

/**
 * @author William Horan
 * @version 1.0 October 5th 2007
 * UploadReferralAttachment.java
 * Documentation on the wiki at http://cct:9454/UploadReferralAttachment
 * Servlet for uploading multiple files to the Server/DataBase for referral attachment storage
 */

package com.metlife.metcare.core.attachment.servlet;

import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FilenameUtils;

import com.chordiant.core.log.LogHelper;
import com.chordiant.service.clientagent.ClientAgentHelper;
import com.metlife.metcare.core.attachment.bean.FileBean;
import com.metlife.metcare.core.caseobjects.clientAgents.SaveCaseClientAgent;
import com.metlife.metcare.core.utility.SSString;

public class UploadReferralAttachment extends HttpServlet
{
	String PACKAGE_NAME = "com.metlife.metcare.core.upload.service";
	String CLASS_NAME = "UploadReferralAttachment";
	int maxsize = 2000048; // 1 mb
	int totalsize = 2000048; // 5mb

	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
	{
		// Not handling Get, service must be invoked via Post.
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
	{
		String METHOD_NAME = "doPost";
		LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Made it to the servlet");
		String reply = upload(request);
        //response.setHeader("Content-Type", "text/xml");
        //response.getWriter().write(reply);
        //response.getWriter().flush();
        request.setAttribute("id", reply);
        
        getServletConfig().getServletContext().getRequestDispatcher("/xAdvisorWeb/bundles/upload/doneattachfile.jsp").forward(request, response);
	}

	private String upload(HttpServletRequest request)
	{
		String METHOD_NAME = "upload";
        String reply = "";
		LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Inside upload");
		try
		{

			int maxsize = 0;
			//Check that we have a file upload request
			//boolean isMultipart = ServletFileUpload.isMultipartContent(request);

			LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Past MultiPart");

			//Create a factory for disk-based file items
			DiskFileItemFactory factory = new DiskFileItemFactory();

			LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Done instantiation of DiskFile");
			/* All at once if needed
			//Create a factory for disk-based file items
			DiskFileItemFactory factory = new DiskFileItemFactory(yourMaxMemorySize, yourTempDirectory);
			*/

			//Set factory constraints
			factory.setSizeThreshold(maxsize);
			//factory.setRepository(repository);

			LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Done setting factory constraints");

			//Create a new file upload handler
			ServletFileUpload upload = new ServletFileUpload(factory);

			LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Done creating Handler for upload");

			//Set overall request size constraint
			upload.setSizeMax(totalsize);

			LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "done setting max size of upload request");

			//Parse the request
			List items = upload.parseRequest(request);

			LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Done parsing should have a good list now.");

			//Process the uploaded items
			Iterator iter = items.iterator();
            Object fileObj = new Object();
			String description = "";
            String username = "";
            String authToken = "";
            String caseArchiveDate = "";
            String time = "";
			while (iter.hasNext())
			{
                FileItem item = (FileItem) iter.next();
                
				if (item.isFormField())
				{
                    LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Processing a form field");
					String name = item.getFieldName();
					String value = item.getString();
                    LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Name:" + name + " Value:" + value);
					if (name.equalsIgnoreCase("description"))
					{
						description = value;
					}
                    else if(name.equalsIgnoreCase("username"))
                    {
                        username = value;
                    }
                    else if(name.equalsIgnoreCase("auth"))
                    {
                        authToken = value;
                    }
					else if(name.equalsIgnoreCase("caseArchiveDate"))
					{
						caseArchiveDate = value;
					}
                    else if (name.equalsIgnoreCase("time"))
                    {
                        time = value;
                    }
				} else
				{
                    LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Processing a file.");
                    fileObj = item;
				}
			}
            reply = processUploadedFile((FileItem) fileObj, description, username, authToken, caseArchiveDate);
            reply = reply + "|" + caseArchiveDate + "|" + time;

		} catch (FileUploadException e)
		{

			LogHelper.error(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "There was a problem processing the upload request Exception:" + e.toString());
            reply = "There was a problem processing the upload request Exception:" + e.toString();
		}
        
		return reply;
	}
	private String processUploadedFile(FileItem item, String description, String userName, String authToken, String caseArchiveDate)
	{
		String METHOD_NAME = "processUploadedFile";
		LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Processing an uploaded file");
		String reply = "";
        // Process a file upload
		if (!item.isFormField() && !SSString.isEmpty(item.getName()))
		{
			reply = doUpload(item, description, userName, authToken, caseArchiveDate);
		}
        return reply;
	}
	private String doUpload(FileItem item, String description, String userName, String authToken, String caseArchiveDate)
	{

		String METHOD_NAME = "doUpload";
		LogHelper.debug(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Starting upload sewquence");
		FileBean fBean = new FileBean();
        String reply = "Unable to Call SaveImage";
		try
		{

			String fieldName = item.getFieldName();
			String fileName = item.getName();
			String contentType = item.getContentType();
			boolean isInMemory = item.isInMemory();
			long sizeInBytes = item.getSize();

			fileName = FilenameUtils.getName(fileName);

            
			fBean.setBytes(item.get());
			fBean.setDescription(description);
			fBean.setFileName(fileName);
            fBean.setAuthToken(authToken);
            fBean.setUserName(userName);
            fBean.setOtherId("File");
            fBean.setCaseArchiveDate(caseArchiveDate);

			if ((SSString.isEmpty(userName)) || (SSString.isEmpty(authToken))) {
				LogHelper.error(PACKAGE_NAME, CLASS_NAME, "doImageUpload", "userName and/or AuthToken empty");
			} else {
				try {
					SaveCaseClientAgent saveCaseClientAgent = (SaveCaseClientAgent) ClientAgentHelper.getClientAgent(SaveCaseClientAgent.CLASS_NAME);
					reply = saveCaseClientAgent.saveReferralImage(userName, authToken, fBean);
				} catch (Exception e) {
					LogHelper.error(PACKAGE_NAME, CLASS_NAME, "doImageUpload", "exception: " + e.toString());
				}
			}

			//SaveReferralAttachment savereferral = new SaveReferralAttachment();

			//reply = savereferral.saveAttachment(fBean);



			//Whoran Commented out was only used for poc and writing file to server file system. 
			/*
			    //Strip full path and get just the name
			    if (fileName != null)
			    {
			            
			        LogHelper.error(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Uploading File: " + FilenameUtils.getName(fileName) + " Size : " + sizeInBytes);
			        fileName = FilenameUtils.getName(fileName);
			    }
			        
			    LogHelper.error(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "done pulling file properties");
			        
			        
			            
			    // Process a file upload
			    if (writeToFile)
			    {
			        LogHelper.error(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "Writing");
			        //File uploadedFile = new File("C:\\test\\" + fileName);
			        LogHelper.error(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "done creating");
			        //item.write(uploadedFile);
			        LogHelper.error(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "done writing");
			    } else
			    {
			        //InputStream uploadedStream = item.getInputStream();
			        //uploadedStream.close();
			
			    }
			*/

		} catch (Exception e)
		{

			LogHelper.error(PACKAGE_NAME, CLASS_NAME, METHOD_NAME, "There was a problem uploading the file Exception:" + e.toString());
		}
        

        return reply;
	}

	//Whoran Commented out as I believe class variables are not thread safe.
	/*
	private String processFormField(FileItem item)
	{
	
	// Process a regular form field
	if (item.isFormField())
	{
	    String name = item.getFieldName();
	    String value = item.getString();
	    if(name.equalsIgnoreCase("referralID"))
	    {
	        value = ReferralID
	    }
	}
	
	}
	*/
}