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"Added sample: java/src/main/java/com/google/api/services/samples/youtube/cmdline/data/Search.java"
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  • java/src/main/java/com/google/api/services/samples/youtube/cmdline/data

‎java/src/main/java/com/google/api/services/samples/youtube/cmdline/data/Search.java‎

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/*
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* Copyright (c) 2012 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the License
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* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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* or implied. See the License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.google.api.services.samples.youtube.cmdline.data;
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import com.google.api.client.googleapis.json.GoogleJsonResponseException;
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import com.google.api.client.http.HttpRequest;
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import com.google.api.client.http.HttpRequestInitializer;
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import com.google.api.client.http.HttpTransport;
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import com.google.api.client.http.javanet.NetHttpTransport;
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import com.google.api.client.json.JsonFactory;
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import com.google.api.client.json.jackson2.JacksonFactory;
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import com.google.api.services.samples.youtube.cmdline.Auth;
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import com.google.api.services.youtube.YouTube;
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import com.google.api.services.youtube.model.ResourceId;
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import com.google.api.services.youtube.model.SearchListResponse;
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import com.google.api.services.youtube.model.SearchResult;
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import com.google.api.services.youtube.model.Thumbnail;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Properties;
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/**
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* Print a list of videos matching a search term.
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*
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* @author Jeremy Walker
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*/
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public class Search {
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/**
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* Define a global variable that identifies the name of a file that
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* contains the developer's API key.
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*/
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private static final String PROPERTIES_FILENAME = "youtube.properties";
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private static final long NUMBER_OF_VIDEOS_RETURNED = 25;
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/**
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* Define a global instance of a Youtube object, which will be used
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* to make YouTube Data API requests.
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*/
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private static YouTube youtube;
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/**
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* Initialize a YouTube object to search for videos on YouTube. Then
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* display the name and thumbnail image of each video in the result set.
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*
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* @param args command line args.
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*/
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public static void main(String[] args) {
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// Read the developer key from the properties file.
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Properties properties = new Properties();
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try {
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InputStream in = Search.class.getResourceAsStream("/" + PROPERTIES_FILENAME);
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properties.load(in);
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} catch (IOException e) {
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System.err.println("There was an error reading " + PROPERTIES_FILENAME + ": " + e.getCause()
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+ " : " + e.getMessage());
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System.exit(1);
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}
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try {
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// This object is used to make YouTube Data API requests. The last
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// argument is required, but since we don't need anything
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// initialized when the HttpRequest is initialized, we override
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// the interface and provide a no-op function.
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youtube = new YouTube.Builder(Auth.HTTP_TRANSPORT, Auth.JSON_FACTORY, new HttpRequestInitializer() {
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public void initialize(HttpRequest request) throws IOException {
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}
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}).setApplicationName("youtube-cmdline-search-sample").build();
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// Prompt the user to enter a query term.
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String queryTerm = getInputQuery();
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// Define the API request for retrieving search results.
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YouTube.Search.List search = youtube.search().list("id,snippet");
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// Set your developer key from the {{ Google Cloud Console }} for
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// non-authenticated requests. See:
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// {{ https://cloud.google.com/console }}
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String apiKey = properties.getProperty("youtube.apikey");
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search.setKey(apiKey);
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search.setQ(queryTerm);
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// Restrict the search results to only include videos. See:
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// https://developers.google.com/youtube/v3/docs/search/list#type
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search.setType("video");
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// To increase efficiency, only retrieve the fields that the
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// application uses.
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search.setFields("items(id/kind,id/videoId,snippet/title,snippet/thumbnails/default/url)");
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search.setMaxResults(NUMBER_OF_VIDEOS_RETURNED);
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// Call the API and print results.
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SearchListResponse searchResponse = search.execute();
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List<SearchResult> searchResultList = searchResponse.getItems();
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if (searchResultList != null) {
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prettyPrint(searchResultList.iterator(), queryTerm);
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}
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} catch (GoogleJsonResponseException e) {
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System.err.println("There was a service error: " + e.getDetails().getCode() + " : "
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+ e.getDetails().getMessage());
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} catch (IOException e) {
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System.err.println("There was an IO error: " + e.getCause() + " : " + e.getMessage());
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} catch (Throwable t) {
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t.printStackTrace();
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}
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}
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/*
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* Prompt the user to enter a query term and return the user-specified term.
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*/
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private static String getInputQuery() throws IOException {
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String inputQuery = "";
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System.out.print("Please enter a search term: ");
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BufferedReader bReader = new BufferedReader(new InputStreamReader(System.in));
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inputQuery = bReader.readLine();
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if (inputQuery.length() < 1) {
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// Use the string "YouTube Developers Live" as a default.
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inputQuery = "YouTube Developers Live";
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}
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return inputQuery;
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}
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/*
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* Prints out all results in the Iterator. For each result, print the
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* title, video ID, and thumbnail.
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*
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* @param iteratorSearchResults Iterator of SearchResults to print
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*
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* @param query Search query (String)
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*/
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private static void prettyPrint(Iterator<SearchResult> iteratorSearchResults, String query) {
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System.out.println("\n=============================================================");
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System.out.println(
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" First " + NUMBER_OF_VIDEOS_RETURNED + " videos for search on \"" + query + "\".");
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System.out.println("=============================================================\n");
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if (!iteratorSearchResults.hasNext()) {
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System.out.println(" There aren't any results for your query.");
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}
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while (iteratorSearchResults.hasNext()) {
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SearchResult singleVideo = iteratorSearchResults.next();
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ResourceId rId = singleVideo.getId();
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// Confirm that the result represents a video. Otherwise, the
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// item will not contain a video ID.
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if (rId.getKind().equals("youtube#video")) {
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Thumbnail thumbnail = singleVideo.getSnippet().getThumbnails().getDefault();
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System.out.println(" Video Id" + rId.getVideoId());
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System.out.println(" Title: " + singleVideo.getSnippet().getTitle());
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System.out.println(" Thumbnail: " + thumbnail.getUrl());
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System.out.println("\n-------------------------------------------------------------\n");
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}
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}
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}
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}

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