安装hadoop 和 hive我就不多说了,网上太多文章 自己看去
首先,在机器上打开hiveservice
hive --service hiveserver -p 50000 &
就这多jar包,必须的
不多说,直接上代码
package asia.wildfire.hive.service; import java.sql.*; import java.sql.Date; import java.text.SimpleDateFormat; import java.util.*; /** * User: liuxiaochen * Date: 13-9-24 * Time: 下午5:47 * 修改描述 */ public class HiveService { private static final String URLHIVE = "jdbc:hive://ip:50000/default"; private static Connection connection = null; public static Connection getHiveConnection() { if (null == connection) { synchronized (HiveService.class) { if (null == connection) { try { Class.forName("org.apache.hadoop.hive.jdbc.HiveDriver"); connection = DriverManager.getConnection(URLHIVE, "", ""); } catch (SQLException e) { e.printStackTrace(); } catch (ClassNotFoundException e) { e.printStackTrace(); } } } } return connection; } public static void createTable() throws SQLException { String tweetTableSql = "DROP TABLE IF EXISTS hive_crm_tweet2222"; String createTable1 = "CREATE EXTERNAL TABLE hive_crm_tweet2222(tweet_id string, cuser_id string, created_at bigint, year bigint, month bigint, day bigint, hour bigint, text string, comments_count bigint, reposts_count bigint, source string, retweeted_id string, post_type string, sentiment string, positive_tags_string string, predict_tags_string string, tags_string string) STORED BY 'org.apache.hadoop.hive.dynamodb.DynamoDBStorageHandler' TBLPROPERTIES (\"dynamodb.table.name\" = \"crm_tweet\",\"dynamodb.column.mapping\" = \"tweet_id:tweet_id,cuser_id:cuser_id,created_at:created_at,year:year,month:month,day:day,hour:hour,text:text,comments_count:comments_count,reposts_count:reposts_count,source:source,retweeted_id:retweeted_id,post_type:post_type,sentiment:sentiment,positive_tags_string:positive_tags_string,predict_tags_string:predict_tags_string,tags_string:tags_string\")"; String commentTableSql = "DROP TABLE IF EXISTS hive_tweet_comment2222"; String createTable2 = "CREATE EXTERNAL TABLE hive_tweet_comment2222(tweet_id string,comment_id string, cuser_id string, user_id string, created_at bigint, year bigint, month bigint, day bigint, hour bigint, text string, comments_count bigint, reposts_count bigint, source string, topic_id string, post_type string, sentiment string) STORED BY 'org.apache.hadoop.hive.dynamodb.DynamoDBStorageHandler' TBLPROPERTIES (\"dynamodb.table.name\" = \"crm_tweet_comment\",\"dynamodb.column.mapping\" = \"tweet_id:tweet_id,comment_id:comment_id,cuser_id:cuser_id,user_id:user_id,created_at:created_at,year:year,month:month,day:day,hour:hour,text:text,comments_count:comments_count,reposts_count:reposts_count,source:source,topic_id:tweet_id,post_type:post_type,sentiment:sentiment\")"; String retweetTableSql = "DROP TABLE IF EXISTS hive_tweet_retweet2222"; String createTable3 = "CREATE EXTERNAL TABLE hive_tweet_retweet2222(tweet_id string, cuser_id string, user_id string, retweet_id string, created_at BIGINT, year BIGINT, month BIGINT, day BIGINT, hour BIGINT, text string, comments_count BIGINT, reposts_count BIGINT, source string, topic_id string, verified_type BIGINT, post_type string, sentiment string) STORED BY 'org.apache.hadoop.hive.dynamodb.DynamoDBStorageHandler' TBLPROPERTIES (\"dynamodb.table.name\" = \"crm_tweet_retweet\",\"dynamodb.column.mapping\" = \"tweet_id:tweet_id,cuser_id:cuser_id,user_id:user_id,retweet_id:retweet_id,created_at:created_at,year:year,month:month,day:day,hour:hour,text:text,comments_count:comments_count,reposts_count:reposts_count,source:source,topic_id:tweet_id,verified_type:verified_type,post_type:post_type,sentiment:sentiment\")"; Statement stmt = getHiveConnection().createStatement(); stmt.executeQuery(tweetTableSql); stmt.executeQuery(createTable1); stmt.executeQuery(commentTableSql); stmt.executeQuery(createTable2); stmt.executeQuery(retweetTableSql); stmt.executeQuery(createTable3); } public static void selectTweet() throws SQLException { long aaa = System.currentTimeMillis(); long start = DateUtils.getNDaysAgo(DateUtils.getMidNight(), 15).getTime().getTime(); long end = DateUtils.getNDaysAgo(DateUtils.getMidNight(), 13).getTime().getTime(); String sql = "select cuser_id, count(*) as tw_hour, year, month, day from hive_crm_tweet2222 where created_at > ? and created_at < ? and cuser_id = ? group by cuser_id, year, month, day, hour"; PreparedStatement pstm = getHiveConnection().prepareStatement(sql); pstm.setLong(1, start); pstm.setLong(2, end); pstm.setString(3, "2176270443"); ResultSet rss = pstm.executeQuery(); while (rss.next()) { System.out.println("1: " + rss.getString("cuser_id") + " 2: " + rss.getInt("tw_hour") + " 3: " + rss.getInt("year") + " 4: " + rss.getInt("month") + " 5: " + rss.getInt("day")); } System.out.println(System.currentTimeMillis() - aaa); } public static void selectTweet22() throws SQLException { long aaa = System.currentTimeMillis(); long start = DateUtils.getNDaysAgo(DateUtils.getMidNight(), 15).getTime().getTime(); long end = DateUtils.getNDaysAgo(DateUtils.getMidNight(), 13).getTime().getTime(); String sql = "select cuser_id, created_at, tweet_id from hive_crm_tweet2222 where created_at > ? and created_at < ? and cuser_id = ?"; PreparedStatement pstm = getHiveConnection().prepareStatement(sql); pstm.setLong(1, start); pstm.setLong(2, end); pstm.setString(3, "2176270443"); ResultSet rss = pstm.executeQuery(); SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH"); while (rss.next()) { long cc = Long.valueOf(String.valueOf(rss.getInt("created_at")) + "000"); java.util.Date date = new java.util.Date(cc); System.out.println(dateFormat.format(date)); System.out.println(rss.getString("cuser_id") + " " + rss.getString("tweet_id")); } System.out.println(System.currentTimeMillis() - aaa); } public static void main(String[] args) throws ClassNotFoundException, SQLException { // Class.forName("org.apache.hadoop.hive.jdbc.HiveDriver"); // String querySQL = "SELECT a.* FROM test_time a"; // // Connection con = DriverManager.getConnection(URLHIVE, "", ""); // Statement stmt = con.createStatement(); // ResultSet res = stmt.executeQuery(querySQL); // 执行查询语句 // // while (res.next()) { // System.out.println("Result: key:" + res.getString(1) + " –> value:" + res.getString(2)); // } selectTweet22(); // SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH"); // System.out.println(dateFormat.format(new java.util.Date())); } }代码如上,就这么多,当然复杂的逻辑,还需要你自己处理,谢谢