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testfile.ftl: added AJAX-like file upload

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TestFileController: created.  Like testfile.ftl, will be renamed once this starts to crystallize.
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mbarbier 2011-04-22 20:13:45 +00:00
parent f7e58fd74b
commit d170fa37fd
2 changed files with 221 additions and 2 deletions
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src/edu/cornell/mannlib/vitro/webapp/controller/harvester/TestFileController.java Normal file
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/* $This file is distributed under the terms of the license in /doc/license.txt$ */
package edu.cornell.mannlib.vitro.webapp.controller.harvester;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.json.JSONException;
import org.json.JSONObject;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.ontology.OntModelSpec;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.rdf.model.ModelMaker;
import com.hp.hpl.jena.shared.JenaException;
import com.hp.hpl.jena.shared.Lock;
import edu.cornell.mannlib.vedit.beans.LoginStatusBean;
import edu.cornell.mannlib.vitro.webapp.beans.Portal;
import edu.cornell.mannlib.vitro.webapp.controller.Controllers;
import edu.cornell.mannlib.vitro.webapp.controller.VitroRequest;
import edu.cornell.mannlib.vitro.webapp.controller.freemarker.FreemarkerHttpServlet;
import edu.cornell.mannlib.vitro.webapp.controller.freemarker.TemplateProcessingHelper.TemplateProcessingException;
import edu.cornell.mannlib.vitro.webapp.controller.freemarker.responsevalues.ExceptionResponseValues;
import edu.cornell.mannlib.vitro.webapp.controller.freemarker.responsevalues.ResponseValues;
import edu.cornell.mannlib.vitro.webapp.controller.freemarker.responsevalues.TemplateResponseValues;
import edu.cornell.mannlib.vitro.webapp.dao.WebappDaoFactory;
import edu.cornell.mannlib.vitro.webapp.dao.jena.JenaModelUtils;
import edu.cornell.mannlib.vitro.webapp.dao.jena.event.EditEvent;
import edu.cornell.mannlib.vitro.webapp.filestorage.uploadrequest.FileUploadServletRequest;
import freemarker.template.Configuration;
public class TestFileController extends FreemarkerHttpServlet {
private static final long serialVersionUID = 1L;
private static final Log log = LogFactory.getLog(TestFileController.class);
private static final String TEMPLATE_DEFAULT = "testfile.ftl";
@Override
protected ResponseValues processRequest(VitroRequest vreq) {
try {
Map<String, Object> body = new HashMap<String, Object>();
//body.put("uploadPostback", "false");
body.put("processRequestTest", "hi.");
return new TemplateResponseValues(TEMPLATE_DEFAULT, body);
} catch (Throwable e) {
log.error(e, e);
return new ExceptionResponseValues(e);
}
}
@Override
protected String getTitle(String siteName, VitroRequest vreq) {
return "VIVO Harvester Test";
}
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
if(1 == 1)
{
//Map<String, Object> body = new HashMap<String, Object>();
//body.put("uploadPostback", "true");
//body.put("testvalue", "hello!");
//ResponseValues responseValues = new TemplateResponseValues(TEMPLATE_DEFAULT, body);
//ResponseValues responseValues = new Re
//response.getWriter().write("hello!");
//try {doResponse(new VitroRequest(request), response, responseValues);} catch(Exception e) {log.error(e, e);}
//return;
}
int maxFileSize = 1024 * 1024;
FileUploadServletRequest req = FileUploadServletRequest.parseRequest(request, maxFileSize);
if(req.hasFileUploadException()) {
//todo: complete
}
Map<String, List<FileItem>> fileStreams = req.getFiles();
VitroRequest vreq = new VitroRequest(req);
//if (!checkLoginStatus(request,response) ){
//todo: complete
//}
//LoginStatusBean loginBean = LoginStatusBean.getBean(vreq);
//try {
// super.doGet(vreq,response);
//} catch (Exception e) {
//todo: complete
//}
JSONObject json = new JSONObject();
String path = "/home/mbarbieri/tempfileupload/"; //todo: complete
if(fileStreams.get("csvFile") != null && fileStreams.get("csvFile").size() > 0) {
FileItem csvStream = fileStreams.get("csvFile").get(0);
String name = csvStream.getName();
File file = new File(path + name);
//FileWriter writer = new FileWriter(file);
try {
/*
InputStream inputStream = csvStream.getInputStream();
for(int nextByte = inputStream.read(); nextByte != -1; nextByte = inputStream.read())
{
writer.write(nextByte);
}
*/
csvStream.write(file);
} catch (Exception e) {
//todo: handle
} finally {
csvStream.delete();
}
String errorMessage = validateCsvFile(file);
boolean success;
if(errorMessage != null) {
success = false;
//todo: handle
} else {
success = true;
errorMessage = "success";
}
try {
//todo: complete
json.put("success", success);
json.put("fileName", name);
json.put("errorMessage", errorMessage);
}
catch(JSONException e) {
//todo: handle
}
} else {
try {
json.put("success", false);
json.put("errorMessage", "No file uploaded");
} catch(JSONException e) {
//todo: handle
}
}
response.getWriter().write(json.toString());
/*
* Ajax request: filename, data
* Process: validate
* Ajax response: success or error message
*
*/
}
private String validateCsvFile(File file)
{
return null;
}
}