Java连接PostgreSQL的简单示例

import java.sql.*;

public class testPostgre {
 public static void main(String[] args) {
  try {
   Class.forName("org.postgresql.Driver");
   Connection conn = DriverManager.getConnection("jdbc:postgresql://172.18.10.230:5432/postgres","postgres-admin","admin");
   Statement stmt=conn.createStatement();
   ResultSet rs=stmt.executeQuery("SELECT * from cities");
   while(rs.next())
   {
    System.out.println(rs.getString(1));
   }
   conn.close();
  }
  catch(Exception ex){
   System.out.println("error!");
  }
 }
}