Derby数据库是一个纯用Java实现的内存数据库，属于Apache的一个开源项目。由于是用Java实现的，所以可以在任何平台上运行；另外一个特点是体积小，免安装，只需要几个小jar包就可以运行了。下面说下其安装及配置

安装

1).从apache下载Derby数据库(如db-derby-10.10.1.1-bin.zip)并解压到任意目录(如：D:\Derby\db-derby-10.10.1.1-bin)。

2).配置环境变量DERBY_HOME=D:\Derby\db-derby-10.10.1.1-bin

并添加到path和classpath环境变量(%DERBY_HOME%\bin;%DERBY_HOME%\lib\derbyrun.jar)

3).测试数据库安装 C:\>sysinfo

------------------ Java Information ------------------

Java Version:    1.7.0_40

Java Vendor:     Oracle Corporation

Java home:       C:\Program Files\Java\jdk1.7.0_40\jre

Java classpath:  D:\Derby\db-derby-10.10.1.1-bin\bin;D:\Derby\db-derby-10.10.1.1-bin\lib\derbyrun.jar;

OS name:         Windows 7

OS architecture: amd64

OS version:      6.1

Java user name:  qqqqq

Java user home:  D:\userdata\qqq

Java user dir:   C:\

java.specification.name: Java Platform API Specification

java.specification.version: 1.7

java.runtime.version: 1.7.0_40-b43

--------- Derby Information --------

[D:\Derby\db-derby-10.10.1.1-bin\lib\derby.jar] 10.10.1.1 - (1458268)

[D:\Derby\db-derby-10.10.1.1-bin\lib\derbytools.jar] 10.10.1.1 - (1458268)

[D:\Derby\db-derby-10.10.1.1-bin\lib\derbynet.jar] 10.10.1.1 - (1458268)

[D:\Derby\db-derby-10.10.1.1-bin\lib\derbyclient.jar] 10.10.1.1 - (1458268)

连接

C:\>ij

ij 版本 10.10

ij> CONNECT 'jdbc:derby:D:\Project\derbyDB\testdb;create=true';(如果数据库testdb不存在，则创建改数据库)

ij> CONNECT 'jdbc:derby:D:\Project\derbyDB\testdb;';           (连接testdb数据库)

ij(CONNECTION1)> CREATE TABLE FIRSTTABLE(ID INT PRIMARY KEY,NAME VARCHAR(12));(创建表)

已插入/更新/删除 0 行

ij(CONNECTION1)> INSERT INTO FIRSTTABLE VALUES(10,'TEN'),(20,'TWENTY'),(30,'THIRTY');(插入数据)已插入/更新/删除 3 行

ij(CONNECTION1)> SELECT * FROM FIRSTTABLE;

ID |NAME

------------------------

10 |TEN

20 |TWENTY

30 |THIRTY

已选择 3 行

ij(CONNECTION1)>exit;(退出)

说明

1. sysinfo工具用于显示Java环境信息和Derby的版本信息。

2. ij工具来进行数据库交互，执行SQL脚本，如查询、增删改、创建表等

例子

下面是个完整的例子，如何程序中操作JavaDB

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.Statement;

import java.util.Properties;

public class TestDerby {

public static void main(String[] args) {

try {

Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();

System.out.println("Load the embedded driver");

Connection conn = null;

Properties props = new Properties();

props.put("user", "user1"); props.put("password", "user1");

conn=DriverManager.getConnection("jdbc:derby:C:\\Project\\derbyDB\\testdb;");

System.out.println("create and connect to testdb");

Statement s = conn.createStatement();

ResultSet rs = s.executeQuery("SELECT * FROM FIRSTTABLE");

System.out.println("name\t\tscore");

while(rs.next()) {

StringBuilder builder = new StringBuilder(rs.getString(1));

builder.append("\t");

builder.append(rs.getInt(1));

System.out.println(builder.toString());

}

} catch (InstantiationException e) {

e.printStackTrace();

} catch (IllegalAccessException e) {

e.printStackTrace();

} catch (ClassNotFoundException e) {

e.printStackTrace();

}catch (Exception e) {

e.printStackTrace();

}

}

}

posted on 2014-05-22 10:18 顺其自然EVO 阅读(2117) 评论(0)  编辑  收藏 所属分类: 测试学习专栏