java连接postgreSQL数据库实例!
java连接postgreSQL数据库实例!到http://wwwmaster.postgresql.org/download/mirrors-ftp?file=binary%2Fv8.1.4%2Fwin32%2Fpostgresql-8.1.4-1.zip
选择一个下载速度快的国家下载 postgresql数据库
到
http://jdbc.postgresql.org/download.html 下载jdbc驱动
安装 postgresql，建表
-- Table: testtable
-- DROP TABLE testtable;
CREATE TABLE testtable
(
id bigserial NOT NULL ,
name varchar ( 30 ),
CONSTRAINT testtable_pkey PRIMARY KEY (id)
)
WITHOUT OIDS;
ALTER TABLE testtable OWNER TO postgres;
CREATE SEQUENCE testtable_id_seq
INCREMENT 1
MINVALUE 1
MAXVALUE 9223372036854775807
START 3
CACHE 1 ;
ALTER TABLE testtable_id_seq OWNER TO postgres;
连接测试...
package com.test;
import org.postgresql. * ;
import java.sql. * ;
public
class TestDB{
public TestDB(){
}
public
static
void main(String args[])
{
System.out.print( " this is a test " );
try
{
Class.forName( " org.postgresql.Driver " ).newInstance();
String url = " jdbc:postgresql://localhost:5432/postgres " ;
Connection con = DriverManager.getConnection(url, " postgres " , " 1234 " );
Statement st = con.createStatement();
String sql = " select * from testtable " ;
ResultSet rs = st.executeQuery(sql);
while (rs.next())
{
System.out.print(rs.getInt( 1 ));
System.out.println(rs.getString( 2 ));
}
rs.close();
st.close();
con.close();
}
catch (Exception ee)
{
System.out.print(ee.getMessage());
}
}
}
页:
[1]