java 连接postgresql测试

cxg518

package temp;
/**
*
* @author JadeLuo
*/
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import org.postgresql.ds.PGSimpleDataSource;
public class PostgreSQLDataSource {
/**
CREATE TABLE lfchat.auto_id_test ( id SERIAL primary key , username
character(8) NOT NULL, password character(6) NOT NULL, email character(6) NOT NULL ) WITH ( OIDS=FALSE );
ALTER TABLE lfchat.auto_id_test OWNER TO sdbadmin;
*
* @param args
* @throws SQLException
*/
public static void main(String[] args) throws SQLException {
PGSimpleDataSource pgSimpleDataSource = new PGSimpleDataSource();
pgSimpleDataSource.setServerName("ip:11780");
//        pgSimpleDataSource.setServerName("192.168.1.8");//default 5432
//        pgSimpleDataSource.setDatabaseName("postgres");
//        pgSimpleDataSource.setDatabaseName("foo");
pgSimpleDataSource.setDatabaseName("foo");
//        pgSimpleDataSource.setUser("lv");
//        pgSimpleDataSource.setPassword("lv");
pgSimpleDataSource.setUser("sdbadmin");
pgSimpleDataSource.setPassword("sa");
Connection conn = pgSimpleDataSource.getConnection();
Statement state = conn.createStatement();
String sql = "insert into lfchat.auto_id_test (username,password,email) values (?,?,?);";
PreparedStatement pstmt = (PreparedStatement) conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);//传入参数：Statement.RETURN_GENERATED_KEYS
pstmt.setString(1, "username");
pstmt.setString(2, "pwd");
pstmt.setString(3, "email");
pstmt.executeUpdate();//执行sql                                                                             int autoInckey = -1;
ResultSet rs = pstmt.getGeneratedKeys(); //获取结果   
if (rs.next()) {
int autoIncKey = rs.getInt(1);//取得ID
System.out.println("autoIncKey=>>>>>>>>>>" + autoIncKey);
} else {
// throw an exception from here
}
}
static void showResultSet(ResultSet resultSet) throws SQLException {
ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
int num = resultSetMetaData.getColumnCount();
while (resultSet.next()) {
for (int i = 1; i <= num; i++) {
System.out.print(resultSetMetaData.getCatalogName(i) + " "
+ resultSet.getString(i));
}
System.out.println();
}
}
}