Spring学习笔记（七）

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1、spring+jdbc集成步骤

（1）配置数据源

（2）配置事务（注解方式和XML方式）

2、实例（注解方式）

（1）Person.java

public class Person {private Integer id;private String 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;}public Person() {super();// TODO Auto-generated constructor stub}public Person(Integer id, String name) {super();this.id = id;this.name = name;}@Overridepublic String toString() {return "Person [id=" + id + ", name=" + name + "]";}}

（2）PersonService.java

public interface PersonService {public void save(Person person);public void update(Person person);public Person getPerson(Integer id);public List<Person> getPersons();public void delete(Integer id);}

（3）PersonServiceImpl.java

@Transactionalpublic class PersonServiceImpl implements PersonService { private JdbcTemplate jdbcTemplate;public void setDataSource(DataSource dataSource) {this.jdbcTemplate = new JdbcTemplate(dataSource);}@Overridepublic void save(Person person) {jdbcTemplate.update("insert into person(id,name) values(?,?)", new Object[]{person.getId(), person.getName()},new int[]{java.sql.Types.INTEGER, java.sql.Types.VARCHAR});}@Overridepublic 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});}@Transactional(propagation=Propagation.NOT_SUPPORTED)@SuppressWarnings("unchecked")@Overridepublic Person getPerson(Integer id) {return (Person)jdbcTemplate.queryForObject("select * from person where id=?", new Object[]{id}, new int[]{java.sql.Types.INTEGER}, new PersonRowMapper());}@Transactional(propagation=Propagation.NOT_SUPPORTED)@SuppressWarnings("unchecked")@Overridepublic List<Person> getPersons() {return (List<Person>)jdbcTemplate.query("select * from person", new PersonRowMapper());}@Overridepublic void delete(Integer id) {jdbcTemplate.update("delete from person where id=?", new Object[]{id},new int[]{java.sql.Types.INTEGER});}}

（4）PersonRowMapper.java

public class PersonRowMapper implements RowMapper {@Overridepublic Object mapRow(ResultSet rs, int index) throws SQLException {Person person = new Person();person.setId(rs.getInt("id"));person.setName(rs.getString("name"));return person;}}

（5）beans.xml

<?xml version="1.0" encoding="UTF-8"?><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>    <!-- 采用@Transactional注解方式使用事务 --><tx:annotation-driven transaction-manager="txManager"/><bean id="personService" class="com.spring.service.impl.PersonServiceImpl"><property name="dataSource" ref="dataSource"/></bean></beans>

（6）jdbc.properties

driverClassName=org.gjt.mm.mysql.Driverurl=jdbc\:mysql\://localhost\:3306/hwd?useUnicode\=true&characterEncoding\=UTF-8username=rootpassword=123456initialSize=1maxActive=500maxIdle=2minIdle=1

（7）PersonServiceImplTest.java

public class PersonServiceImplTest {private static PersonService personService;@BeforeClasspublic static void setUpBeforeClass() throws Exception {ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");personService = (PersonService)ctx.getBean("personService");}@Testpublic void testSave() {Person person = new Person(1, "Tom");personService.save(person);}@Testpublic void testUpdate() {Person person = new Person(1, "Jerry");personService.update(person);}@Testpublic void testGetPerson() {Person person = personService.getPerson(1);System.out.println(person);}@Testpublic void testGetPersons() {List<Person> persons = personService.getPersons();System.out.println(persons);}@Testpublic void testDelete() {personService.delete(1);}}

3、实例（XML方式）