使用JDBC编程访问ODPS

<dependency>
<groupId>com.aliyun.odps</groupId>
<artifactId>odps-jdbc</artifactId>
<version>1.0-public</version>
</dependency>

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;

public class Main {

private static String driverName = “com.aliyun.odps.jdbc.OdpsDriver”;

public static void main(String[] args) throws SQLException {
try {
Class.forName(driverName);
} catch (ClassNotFoundException e) {
e.printStackTrace();
System.exit(1);
}

Properties config = new Properties();
config.put(“access_id”, “your_access_id”);
config.put(“access_key”, “your_access_key”);
config.put(“project_name”, “your_project”);
config.put(“charset”, “utf-8″);
Connection
conn = DriverManager.getConnection(“jdbc:odps:https://service.odps.aliyun.com/api”, config);
ResultSet rs;

// create a table
Statement stmt = conn.createStatement();
String tableName = “jdbc_test”;
stmt.execute(“drop table if exists ” + tableName);
stmt.execute(“create table ” + tableName + ” (key int, value string)”);

// get meta data
DatabaseMetaData metaData = conn.getMetaData();
System.out.println(“product = ” + metaData.getDatabaseProductName());
System.out.println(“jdbc version = ” + metaData.getDriverMajorVersion() + “, ”
+ metaData.getDriverMinorVersion());
rs = metaData.getTables(null, null, tableName, null);
while (rs.next()) {
String name = rs.getString(3);
System.out.println(“inspecting table: ” + name);
ResultSet rs2 = metaData.getColumns(null, null, name, null);
while (rs2.next()) {
System.out.println(rs2.getString(“COLUMN_NAME”) + “\t”
+ rs2.getString(“TYPE_NAME”) + “(” + rs2.getInt(“DATA_TYPE”) + “)”);
}
}

// run sql
String sql;

// insert a record
sql = String.format(“insert into table %s select 24 key, ‘hours’ value from (select count(1) from %s) a”, tableName, tableName);
System.out.println(“Running: ” + sql);
int count = stmt.executeUpdate(sql);
System.out.println(“updated records: ” + count);

// select * query
sql = “select * from ” + tableName;
System.out.println(“Running: ” + sql);
rs = stmt.executeQuery(sql);
while (rs.next()) {
System.out.println(String.valueOf(rs.getInt(1)) + “\t” + rs.getString(2));
}

}

}

product = ODPS JDBC
jdbc version = 1, 0
inspecting table: jdbc_test
key BIGINT(-5)
value   STRING(12)
Running: insert into table jdbc_test select 24 key, ‘hours’ value from (select count(1) from jdbc_test) a
updated records: 1
Running: select * from jdbc_test
24  hours