YouTube API 設定 サンプル コード Java

/*
* Copyright (c) 2012 Google Inc.
*
* 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.google.api.services.samples.youtube.cmdline.youtube_cmdline_search_sample;

import com.google.api.client.googleapis.json.GoogleJsonResponseException;
import com.google.api.client.http.HttpRequest;
import com.google.api.client.http.HttpRequestInitializer;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.youtube.YouTube;
import com.google.api.services.youtube.model.ResourceId;
import com.google.api.services.youtube.model.SearchListResponse;
import com.google.api.services.youtube.model.SearchResult;
import com.google.api.services.youtube.model.Thumbnail;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;

/**
* Prints a list of videos based on a search term.
*
* @author Jeremy Walker
*/
public class Search {

    /** Global instance properties filename. */
    private static String PROPERTIES_FILENAME = "youtube.properties";

    /** Global instance of the HTTP transport. */
    private static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();

    /** Global instance of the JSON factory. */
    private static final JsonFactory JSON_FACTORY = new JacksonFactory();

    /** Global instance of the max number of videos we want returned (50 = upper limit per page). */
    private static final long NUMBER_OF_VIDEOS_RETURNED = 25;

    /** Global instance of Youtube object to make all API requests. */
    private static YouTube youtube;


    /**
    * Initializes YouTube object to search for videos on YouTube (Youtube.Search.List). The program
    * then prints the names and thumbnails of each of the videos (only first 50 videos).
    *
    * @param args command line args.
    */
    public static void main(String[] args) {
        // Read the developer key from youtube.properties
        Properties properties = new Properties();
        try {
            InputStream in = Search.class.getResourceAsStream("/" + PROPERTIES_FILENAME);
            properties.load(in);

        } catch (IOException e) {
            System.err.println("There was an error reading " + PROPERTIES_FILENAME + ": " + e.getCause()
                + " : " + e.getMessage());
            System.exit(1);
        }

        try {
            /*
            * The YouTube object is used to make all API requests. The last argument is required, but
            * because we don't need anything initialized when the HttpRequest is initialized, we override
            * the interface and provide a no-op function.
            */
            youtube = new YouTube.Builder(HTTP_TRANSPORT, JSON_FACTORY, new HttpRequestInitializer() {
                public void initialize(HttpRequest request) throws IOException {}
            }).setApplicationName("youtube-cmdline-search-sample").build();

            // Get query term from user.
            String queryTerm = getInputQuery();

            YouTube.Search.List search = youtube.search().list("id,snippet");
            /*
            * It is important to set your API key from the Google Developer Console for
            * non-authenticated requests (found under the Credentials tab at this link:
            * console.developers.google.com/). This is good practice and increased your quota.
            */
            String apiKey = properties.getProperty("youtube.apikey");
            search.setKey(apiKey);
            search.setQ(queryTerm);
            /*
            * We are only searching for videos (not playlists or channels). If we were searching for
            * more, we would add them as a string like this: "video,playlist,channel".
            */
            search.setType("video");
            /*
            * This method reduces the info returned to only the fields we need and makes calls more
            * efficient.
            */
            search.setFields("items(id/kind,id/videoId,snippet/title,snippet/thumbnails/default/url)");
            search.setMaxResults(NUMBER_OF_VIDEOS_RETURNED);
            SearchListResponse searchResponse = search.execute();

            List<SearchResult> searchResultList = searchResponse.getItems();

            if (searchResultList != null) {
                prettyPrint(searchResultList.iterator(), queryTerm);
            }
        } catch (GoogleJsonResponseException e) {
            System.err.println("There was a service error: " + e.getDetails().getCode() + " : "
                + e.getDetails().getMessage());
        } catch (IOException e) {
            System.err.println("There was an IO error: " + e.getCause() + " : " + e.getMessage());
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }

    /*
    * Returns a query term (String) from user via the terminal.
    */
    private static String getInputQuery() throws IOException {

        String inputQuery = "";

        System.out.print("Please enter a search term: ");
        BufferedReader bReader = new BufferedReader(new InputStreamReader(System.in));
        inputQuery = bReader.readLine();

        if (inputQuery.length() < 1) {
            // If nothing is entered, defaults to "YouTube Developers Live."
            inputQuery = "YouTube Developers Live";
        }
        return inputQuery;
    }

    /*
    * Prints out all SearchResults in the Iterator. Each printed line includes title, id, and
    * thumbnail.
    *
    * @param iteratorSearchResults Iterator of SearchResults to print
    *
    * @param query Search query (String)
    */
    private static void prettyPrint(Iterator<SearchResult> iteratorSearchResults, String query) {

        System.out.println("\n=============================================================");
        System.out.println(
            " First " + NUMBER_OF_VIDEOS_RETURNED + " videos for search on \"" + query + "\".");
        System.out.println("=============================================================\n");

        if (!iteratorSearchResults.hasNext()) {
            System.out.println(" There aren't any results for your query.");
        }

        while (iteratorSearchResults.hasNext()) {

            SearchResult singleVideo = iteratorSearchResults.next();
            ResourceId rId = singleVideo.getId();

            // Double checks the kind is video.
            if (rId.getKind().equals("youtube#video")) {
                Thumbnail thumbnail = singleVideo.getSnippet().getThumbnails().get("default");

                System.out.println(" Video Id" + rId.getVideoId());
                System.out.println(" Title: " + singleVideo.getSnippet().getTitle());
                System.out.println(" Title: " + singleVideo.getSnippet().getTitle());
                System.out.println(" Thumbnail: " + thumbnail.getUrl());
                System.out.println("\n-------------------------------------------------------------\n");
            }
        }
    }
}

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.google.api.services.samples.youtube.cmdline</groupId>
  <artifactId>youtube-cmdline-search-sample</artifactId>
  <version>1.0</version>
  <packaging>jar</packaging>

  <name>youtube-cmdline-search-sample</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.youtube.version>v3-rev8-1.12.0-beta</project.youtube.version>
    <project.http.version>1.12.0-beta</project.http.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <repositories>
    <repository>
      <id>google-api-services</id>
      <url>http://google-api-client-libraries.appspot.com/mavenrepo</url>
    </repository>
  </repositories>

  <dependencies>
    <!-- YouTube Data V3 support -->
    <dependency>
      <groupId>com.google.apis</groupId>
      <artifactId>google-api-services-youtube</artifactId>
      <version>${project.youtube.version}</version>
    </dependency>

    <dependency>
      <groupId>com.google.http-client</groupId>
      <artifactId>google-http-client-jackson2</artifactId>
      <version>${project.http.version}</version>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>exec-maven-plugin</artifactId>
        <version>1.2.1</version>
        <configuration>
          <mainClass>com.google.api.services.samples.youtube.cmdline.youtube_cmdline_search_sample.Search</mainClass>
        </configuration>
      </plugin>

      <!-- Forces Maven to use Java 1.6 -->
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>2.3.2</version>
        <configuration>
          <source>1.6</source>
          <target>1.6</target>
          <compilerArgument></compilerArgument>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

youtube.apikey=APIキー