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Spring提供數據庫連接池：DBCP配置DataSource並且獲取連接完成數據庫操作： Spring幫助文檔的地址： http://static.springsource.org/spring/docs/2.5.6/reference/beans.html#beans-value-element 以下內容需要導入的jar包： commons-dbcp.jar commons-pool.jar mysql-connector-java-5.0-nightly-20071116-bin.jar 1. 首先在容器內配置數據源 [html] view plain copy

1. <!-- 配置數據源 -->
2. <bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
3. <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
4. <property name="url" value="jdbc:mysql://localhost:3306/sms"/>
5. <property name="username" value="root"/>
6. <property name="password" value="root"/>
7. </bean>

2.拿到註入數據源並且編寫對數據庫的操作 [java] view plain copy

1. @Component("userService")
2. public class UserServiceImpl implements UserService{
3. private UserDao userDao;
4. public void setUserDao(UserDao userDao) {
5. this.userDao = userDao;
6. }
7. @Resource //resource註入
8. private DataSource myDataSource;
9. public DataSource getMyDataSource() {
10. return myDataSource;
11. }
12. public void setMyDataSource(DataSource myDataSource) {
13. this.myDataSource = myDataSource;
14. }
15. //在下面方法前面加邏輯
16. public void save(){
17. try{
18. //拿到連接執行操作
19. Connection conn = myDataSource.getConnection();
20. conn.createStatement().execute("insert into dept values(‘6‘,‘bumen2‘)");
21. }catch(Exception e){
22. e.printStackTrace();
23. }
24. }
25. }

3.測試運行 [java] view plain copy

1. @Test
2. public void test01() {
3. BeanFactory applicationContext = new ClassPathXmlApplicationContext(
4. "beans.xml");
5. UserService user = (UserService) applicationContext.getBean("userService");
6. user.save();
7. }

----------------------------------------------------------------------------------------------------------------------------------通過Properties的方式配置xml的datasource： 1、 編寫properties文件： [html] view plain copy

1. jdbc.driverClassName=com.mysql.jdbc.Driver
2. jdbc.url=jdbc:mysql://localhost:3306/sms
3. jdbc.username=root
4. jdbc.password=root

2、編寫xml容器配置： [html] view plain copy

1. <!-- placeholder 占位符 -->
2. <bean
3. class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
4. <property name="locations">
5. <value>classpath:jdbc.properties</value>
6. </property>
7. </bean>
9. <bean id="dataSource" destroy-method="close"
10. class="org.apache.commons.dbcp.BasicDataSource">
11. <property name="driverClassName" value="${jdbc.driverClassName}" />
12. <property name="url" value="${jdbc.url}" />
13. <property name="username" value="${jdbc.username}" />
14. <property name="password" value="${jdbc.password}" />
15. </bean>

Spring DBCP用xml和properties2種格式配置DataSource