I follow the tutorial of Google about blobstore
https://cloud.google.com/appengine/docs/java/blobstore/#Java_Complete_sample_application
However when i deploy the project to app engine i get the 500 Server Error
these are my classes:
serve class:
import java.io.IOException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.appengine.api.blobstore.BlobKey;
import com.google.appengine.api.blobstore.BlobstoreService;
import com.google.appengine.api.blobstore.BlobstoreServiceFactory;
public class Serve extends HttpServlet {
private BlobstoreService blobstoreService = BlobstoreServiceFactory.getBlobstoreService();
@Override
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws IOException {
BlobKey blobKey = new BlobKey(req.getParameter("blob-key"));
blobstoreService.serve(blobKey, res);
}
}
upload class:
package com.example.photo;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.appengine.api.blobstore.BlobKey;
import com.google.appengine.api.blobstore.BlobstoreService;
import com.google.appengine.api.blobstore.BlobstoreServiceFactory;
public class Upload extends HttpServlet {
private BlobstoreService blobstoreService = BlobstoreServiceFactory.getBlobstoreService();
@Override
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
Map<String, List<BlobKey>> blobs = blobstoreService.getUploads(req);
List<BlobKey> blobKeys = blobs.get("myFile");
if (blobKeys == null || blobKeys.isEmpty()) {
res.sendRedirect("/");
} else {
res.sendRedirect("/serve?blob-key=" + blobKeys.get(0).getKeyString());
}
}
}
index.jsp
<%@ page import="com.google.appengine.api.blobstore.BlobstoreServiceFactory" %>
<%@ page import="com.google.appengine.api.blobstore.BlobstoreService" %>
<html>
<head>
<title>Upload Test</title>
</head>
<body>
<form action="<%= blobstoreService.createUploadUrl("/upload") %>" method="post" enctype="multipart/form-data">
<input type="text" name="foo">
<input type="file" name="myFile">
<input type="submit" value="Submit">
</form>
</body>
</html>
web.xml
<?xml version="1.0" encoding="utf-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<servlet>
<servlet-name>Upload</servlet-name>
<servlet-class>com.direction.investor.fileuploader.Upload</servlet-class>
</servlet>
<servlet>
<servlet-name>Serve</servlet-name>
<servlet-class>com.direction.investor.fileuploader.Serve</servlet-class>
<servlet-mapping>
<servlet-name>Upload</servlet-name>
<url-pattern>/upload</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Serve</servlet-name>
<url-pattern>/serve</url-pattern>
</servlet-mapping>
appengine-web.xml
<?xml version="1.0" encoding="utf-8"?>
<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
<application>optical-wall-92019</application>
<version>1</version>
<!--
Allows App Engine to send multiple requests to one instance in parallel:
-->
<threadsafe>true</threadsafe>
<!-- Configure serving/caching of GWT files -->
<static-files>
<include path="**" />
<!-- The following line requires App Engine 1.3.2 SDK -->
<include path="**.nocache.*" expiration="0s" />
<include path="**.cache.*" expiration="365d" />
<exclude path="**.gwt.rpc" />
</static-files>
<!-- Configure java.util.logging -->
<system-properties>
<property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>
</system-properties>
<!--
HTTP Sessions are disabled by default. To enable HTTP sessions specify:
<sessions-enabled>true</sessions-enabled>
It's possible to reduce request latency by configuring your application to
asynchronously write HTTP session data to the datastore:
<async-session-persistence enabled="true" />
With this feature enabled, there is a very small chance your app will see
stale session data. For details, see
http://code.google.com/appengine/docs/java/config/appconfig.html#Enabling_Sessions
-->
</appengine-web-app>
what am i doing wrong ?
4 comments:
hii,
thanks for sharing your views.
reagrds
seo
hii,
thanks for sharing your views.
reagrds
dm
hii,
thanks for sharing your views.
reagrds
smo
hii,
thanks for sharing your views.
reagrds
dm
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