http://tianya23.blog.51cto.com/1081650/375823
1、JdbcTemplate操作数据库
url=jdbc\:mysql\://localhost\:3306/stanley?useUnicode\=true&characterEncoding\=UTF-8
username=root
password=123456
initialSize=1
maxActive=500
maxIdle=2
minIdle=1
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<context:property-placeholder location="classpath:jdbc.properties"/>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${driverClassName}"/>
<property name="url" value="${url}"/>
<property name="username" value="${username}"/>
<property name="password" value="${password}"/>
<!-- 连接池启动时的初始值 -->
<property name="initialSize" value="${initialSize}"/>
<!-- 连接池的最大值 -->
<property name="maxActive" value="${maxActive}"/>
<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->
<property name="maxIdle" value="${maxIdle}"/>
<!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->
<property name="minIdle" value="${minIdle}"/>
</bean>
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<aop:config>
<aop:pointcut id="transactionPointcut" expression="execution(* cn.comp.service..*.*(..))"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="transactionPointcut"/>
</aop:config>
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="get*" read-only="true" propagation="NOT_SUPPORTED"/>
<tx:method name="*"/>
</tx:attributes>
</tx:advice>
<bean id="personService" class="cn.comp.service.impl.PersonServiceBean">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost/dbunit"></property>
<property name="password" value="root" />
<property name="username" value="root" />
</bean>
private Integer id;
private String name;
public Person(){}
public Person(String name) {
this.name = name;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
/**
* 保存person
* @param person
*/
public void save(Person person);
/**
* 更新person
* @param person
*/
public void update(Person person);
/**
* 获取person
* @param personid
* @return
*/
public Person getPerson(Integer personid);
/**
* 获取所有person
* @return
*/
public List<Person> getPersons();
/**
* 删除指定id的person
* @param personid
*/
public void delete(Integer personid) throws Exception;
}
private JdbcTemplate jdbcTemplate;
public void setDataSource(DataSource dataSource) {
this.jdbcTemplate = new JdbcTemplate(dataSource);
}
public void delete(Integer personid) throws Exception{
jdbcTemplate.update("delete from person where id=?", new Object[]{personid},
new int[]{java.sql.Types.INTEGER});
}
public Person getPerson(Integer personid) {
return (Person)jdbcTemplate.queryForObject("select * from person where id=?", new Object[]{personid},
new int[]{java.sql.Types.INTEGER}, new PersonRowMapper());
}
@SuppressWarnings("unchecked")
public List<Person> getPersons() {
return (List<Person>)jdbcTemplate.query("select * from person", new PersonRowMapper());
}
public void save(Person person) {
jdbcTemplate.update("insert into person(name) values(?)", new Object[]{person.getName()},
new int[]{java.sql.Types.VARCHAR});
}
public void update(Person person) {
jdbcTemplate.update("update person set name=? where id=?", new Object[]{person.getName(), person.getId()},
new int[]{java.sql.Types.VARCHAR, java.sql.Types.INTEGER});
}
}
public Object mapRow(ResultSet rs, int index) throws SQLException {
Person person = new Person(rs.getString("name"));
person.setId(rs.getInt("id"));
return person;
}
}
<property name="dataSource" ref="dataSource"/>
</bean>
<tx:annotation-driven transaction-manager="txManager"/>
<bean id="personService" class="cn.comp.service.impl.PersonServiceBean">
<property name="dataSource" ref="dataSource"/>
</bean>
public class PersonServiceBean implements PersonService {
private JdbcTemplate jdbcTemplate;
public void setDataSource(DataSource dataSource) {
this.jdbcTemplate = new JdbcTemplate(dataSource);
}
// unchecked ,
// checked
@Transactional(noRollbackFor=RuntimeException.class)
public void delete(Integer personid) throws Exception{
jdbcTemplate.update("delete from person where id=?", new Object[]{personid},
new int[]{java.sql.Types.INTEGER});
throw new RuntimeException("运行期例外");
}
@Transactional(propagation=Propagation.NOT_SUPPORTED)
public Person getPerson(Integer personid) {
return (Person)jdbcTemplate.queryForObject("select * from person where id=?", new Object[]{personid},
new int[]{java.sql.Types.INTEGER}, new PersonRowMapper());
}
@Transactional(propagation=Propagation.NOT_SUPPORTED)
@SuppressWarnings("unchecked")
public List<Person> getPersons() {
return (List<Person>)jdbcTemplate.query("select * from person", new PersonRowMapper());
}
public void save(Person person) {
jdbcTemplate.update("insert into person(name) values(?)", new Object[]{person.getName()},
new int[]{java.sql.Types.VARCHAR});
}
public void update(Person person) {
jdbcTemplate.update("update person set name=? where id=?", new Object[]{person.getName(), person.getId()},
new int[]{java.sql.Types.VARCHAR, java.sql.Types.INTEGER});
}
}
<groupId>com.alibaba.external</groupId>
<artifactId>sourceforge.spring</artifactId>
<version>2.5.6</version>
</dependency>
<dependency>
<groupId>com.alibaba.external</groupId>
<artifactId>jdbc.mysql.mysql-connector</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>com.alibaba.external</groupId>
<artifactId>jakarta.commons.dbcp</artifactId>
<version>1.4</version>
</dependency>