Add URLFetch sample

appengine/urlfetch/.gitignore

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+# Eclipse files
+.project
+.classpath
+.settings
+
+# Intellij
+.idea/
+*.iml
+
+# Target folders
+target/

appengine/urlfetch/README.md

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+# Google App Engine Standard Environment URL Fetch Sample
+
+This sample demonstrates how to deploy an application on Google App Engine.
+
+See the [Google App Engine standard environment documentation][ae-docs] for more
+detailed instructions.
+
+[ae-docs]: https://cloud.google.com/appengine/docs/java/
+
+## Setup
+1. Update the `<application>` tag in `src/main/webapp/WEB-INF/appengine-web.xml`
+   with your project name.
+1. Update the `<version>` tag in `src/main/webapp/WEB-INF/appengine-web.xml`
+   with your version name.
+
+## Running locally
+    $ mvn appengine:devserver
+
+## Deploying
+    $ mvn appengine:update

appengine/urlfetch/pom.xml

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+<!--
+Copyright 2015 Google Inc. All Rights Reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<project>
+  <modelVersion>4.0.0</modelVersion>
+  <packaging>war</packaging>
+  <version>1.0-SNAPSHOT</version>
+  <groupId>com.example.appengine</groupId>
+  <artifactId>appengine-URLFetch</artifactId>
+  <parent>
+    <groupId>com.google.cloud</groupId>
+    <artifactId>doc-samples</artifactId>
+    <version>1.0.0</version>
+    <relativePath>../..</relativePath>
+  </parent>
+  <dependencies>
+    <dependency>
+      <groupId>javax.servlet</groupId>
+      <artifactId>servlet-api</artifactId>
+      <type>jar</type>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.json</groupId>
+      <artifactId>json</artifactId>
+      <version>20160212</version>
+    </dependency>
+  </dependencies>
+  <build>
+    <!-- for hot reload of the web application -->
+    <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <version>3.3</version>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <source>1.7</source>
+          <target>1.7</target>
+        </configuration>
+      </plugin>
+      <!-- Parent POM defines ${appengine.sdk.version} (updates frequently). -->
+      <plugin>
+        <groupId>com.google.appengine</groupId>
+        <artifactId>appengine-maven-plugin</artifactId>
+        <version>${appengine.sdk.version}</version>
+      </plugin>
+    </plugins>
+  </build>
+</project>

appengine/urlfetch/src/main/java/com/example/appengine/UrlFetchServlet.java

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+/**
+ * Copyright 2015 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.appengine;
+
+import org.json.JSONObject;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+import java.net.URL;
+
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+@SuppressWarnings("serial")
+public class UrlFetchServlet extends HttpServlet {
+
+  @Override
+  public void doGet(HttpServletRequest req, HttpServletResponse resp)
+      throws IOException {
+    PrintWriter out = resp.getWriter();
+    out.println("<html><body>");
+
+// [START example]
+    URL url = new URL("http://api.icndb.com/jokes/random");
+    BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));
+    String json = "";
+    String line;
+
+    while ((line = reader.readLine()) != null) {
+      json += line;
+    }
+    reader.close();
+// [END example]
+    JSONObject jo = new JSONObject(json);
+    out.println("<h2>"
+        + jo.getJSONObject("value").getString("joke")
+        + "</h2>");
+    out.println("</body></html>");
+  }
+}

appengine/urlfetch/src/main/webapp/WEB-INF/appengine-web.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
+  <application>YOUR-PROJECT-ID</application>
+  <version>YOUR-VERSION-ID</version>
+  <threadsafe>true</threadsafe>
+</appengine-web-app>

appengine/urlfetch/src/main/webapp/WEB-INF/web.xml

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+<?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>hello</servlet-name>
+    <servlet-class>com.example.appengine.UrlFetchServlet</servlet-class>
+  </servlet>
+  <servlet-mapping>
+    <servlet-name>hello</servlet-name>
+    <url-pattern>/</url-pattern>
+  </servlet-mapping>
+</web-app>

pom.xml

@@ -52,6 +52,7 @@
         <module>appengine/sendgrid</module>
         <module>appengine/static-files</module>
         <module>appengine/twilio</module>
+        <module>appengine/urlfetch</module>
         <module>bigquery</module>
         <module>datastore</module>
         <module>logging</module>