本文介紹spring開發(fā)_JDBC操作MySQL數(shù)據(jù)庫,具體如下:
項(xiàng)目結(jié)構(gòu):
數(shù)據(jù)庫表:
/spring_1100_spring+jdbc/src/com/b510/bean/Person.java
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package com.b510.bean; /** * 普通的javaBean類Person * * @author Hongten * */ public class Person { /** * id號(hào) */ private int id; /** * 姓名 */ private String name; /** * 年齡 */ private int age; /** * 性別 */ private String sex; public Person( int id, String name, int age, String sex) { this .id = id; this .name = name; this .age = age; this .sex = sex; } public Person() { } public int getId() { return id; } public void setId( int id) { this .id = id; } public String getName() { return name; } public void setName(String name) { this .name = name; } public int getAge() { return age; } public void setAge( int age) { this .age = age; } public String getSex() { return sex; } public void setSex(String sex) { this .sex = sex; } } |
/spring_1100_spring+jdbc/src/com/b510/service/PersonService.java
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package com.b510.service; import java.util.List; import com.b510.bean.Person; public interface PersonService { /** * 保存Person * * @param person */ public abstract void save(Person person); /** * 更新Person * * @param person */ public abstract void update(Person person); /** * 獲取Person * * @param id * @return */ public abstract Person getPerson(Integer id); /** * 獲取所有Person * * @return */ public abstract List<Person> getPerson(); /** * 刪除指定id的Person * * @param id */ public abstract void delete(Integer id); } |
/spring_1100_spring+jdbc/src/com/b510/service/impl/PersonServiceBean.java
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package com.b510.service.impl; import java.util.List; import javax.sql.DataSource; import org.springframework.jdbc.core.JdbcTemplate; import com.b510.bean.Person; import com.b510.service.PersonService; /** * 業(yè)務(wù)bean * * @author Hongten * */ public class PersonServiceBean implements PersonService { /** * 數(shù)據(jù)源 */ private DataSource dataSource; /** * spring提供的jdbc操作輔助類 */ private JdbcTemplate jdbcTemplate; // 設(shè)置數(shù)據(jù)源 public void setDataSource(DataSource dataSource) { this .jdbcTemplate = new JdbcTemplate(dataSource); } public void save(Person person) { jdbcTemplate.update( "insert into person(name,age,sex)values(?,?,?)" , new Object[] { person.getName(), person.getAge(), person.getSex() }, new int [] { java.sql.Types.VARCHAR, java.sql.Types.INTEGER, java.sql.Types.VARCHAR }); } public void update(Person person) { jdbcTemplate.update( "update person set name=?,age=?,sex=? where id=?" , new Object[] { person.getName(), person.getAge(), person.getSex(), person.getId() }, new int [] { java.sql.Types.VARCHAR, java.sql.Types.INTEGER, java.sql.Types.VARCHAR, java.sql.Types.INTEGER }); } public Person getPerson(Integer id) { Person person = (Person) jdbcTemplate.queryForObject( "select * from person where id=?" , new Object[] { id }, new int [] { java.sql.Types.INTEGER }, new PersonRowMapper()); return person; } @SuppressWarnings ( "unchecked" ) public List<Person> getPerson() { List<Person> list = jdbcTemplate.query( "select * from person" , new PersonRowMapper()); return list; } public void delete(Integer id) { jdbcTemplate.update( "delete from person where id = ?" , new Object[] { id }, new int [] { java.sql.Types.INTEGER }); } } |
/spring_1100_spring+jdbc/src/com/b510/service/impl/PersonRowMapper.java
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package com.b510.service.impl; import java.sql.ResultSet; import java.sql.SQLException; import org.springframework.jdbc.core.RowMapper; import com.b510.bean.Person; public class PersonRowMapper implements RowMapper { @Override public Object mapRow(ResultSet set, int index) throws SQLException { Person person = new Person(set.getInt( "id" ), set.getString( "name" ), set .getInt( "age" ), set.getString( "sex" )); return person; } } |
/spring_1100_spring+jdbc/src/com/b510/test/SpringJDBCTest.java
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package com.b510.test; import java.util.List; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.b510.bean.Person; import com.b510.service.PersonService; public class SpringJDBCTest { public static void main(String[] args) { ApplicationContext act = new ClassPathXmlApplicationContext( "bean.xml" ); PersonService personService = (PersonService) act .getBean( "personService" ); Person person = new Person(); person.setName( "蘇東坡" ); person.setAge( 21 ); person.setSex( "男" ); // 保存一條記錄 personService.save(person); List<Person> person1 = personService.getPerson(); System.out.println( "++++++++得到所有Person" ); for (Person person2 : person1) { System.out.println(person2.getId() + " " + person2.getName() + " " + person2.getAge() + " " + person2.getSex()); } Person updatePerson = new Person(); updatePerson.setName( "Divide" ); updatePerson.setAge( 20 ); updatePerson.setSex( "男" ); updatePerson.setId( 5 ); // 更新一條記錄 personService.update(updatePerson); System.out.println( "******************" ); // 獲取一條記錄 Person onePerson = personService.getPerson( 2 ); System.out.println(onePerson.getId() + " " + onePerson.getName() + " " + onePerson.getAge() + " " + onePerson.getSex()); // 刪除一條記錄 personService.delete( 1 ); } } |
/spring_1100_spring+jdbc/src/bean.xml
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<? 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"> <!--配置數(shù)據(jù)源 --> < bean id = "dataSource" class = "org.apache.commons.dbcp.BasicDataSource" destroy-method = "close" > < property name = "driverClassName" value = "org.gjt.mm.mysql.Driver" /> < property name = "url" value = "jdbc:mysql://localhost:3307/spring?useUnicode=true&characterEncoding=UTF-8" /> < property name = "username" value = "root" /> < property name = "password" value = "root" /> <!-- 連接池啟動(dòng)時(shí)的初始值 --> < property name = "initialSize" value = "1" /> <!-- 連接池的最大值 --> < property name = "maxActive" value = "300" /> <!-- 最大空閑值.當(dāng)經(jīng)過一個(gè)高峰時(shí)間后,連接池可以慢慢將已經(jīng)用不到的連接慢慢釋放一部分,一直減少到maxIdle為止 --> < property name = "maxIdle" value = "2" /> <!-- 最小空閑值.當(dāng)空閑的連接數(shù)少于閥值時(shí),連接池就會(huì)預(yù)申請(qǐng)去一些連接,以免洪峰來時(shí)來不及申請(qǐng) --> < property name = "minIdle" value = "1" /> </ bean > <!-- 采用注解方式來配置事務(wù)。針對(duì)數(shù)據(jù)源的事務(wù)管理器 ,把我們定義的數(shù)據(jù)源注入到DataSourceTransactionManager類的屬性dataSource中 --> < bean id = "txManager" class = "org.springframework.jdbc.datasource.DataSourceTransactionManager" > < property name = "dataSource" ref = "dataSource" /> </ bean > <!-- 引入命名空間: 1.xmlns:tx="http://www.springframework.org/schema/tx 2.http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd 采用@Transaction注解方式使用事務(wù)管理器 --> < tx:annotation-driven transaction-manager = "txManager" /> <!-- 配置業(yè)務(wù)bean:PersonServiceBean --> < bean id = "personService" class = "com.b510.service.impl.PersonServiceBean" > <!-- 向?qū)傩詃ataSource注入數(shù)據(jù)源 --> < property name = "dataSource" ref = "dataSource" ></ property > </ bean > </ beans > |
運(yùn)行結(jié)果;
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2012-3-9 23:30:57 org.springframework.context.support.AbstractApplicationContext prepareRefresh 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@1a05308: display name [org.springframework.context.support.ClassPathXmlApplicationContext@1a05308]; startup date [Fri Mar 09 23:30:57 CST 2012]; root of context hierarchy 2012-3-9 23:30:57 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions 信息: Loading XML bean definitions from class path resource [bean.xml] 2012-3-9 23:30:58 org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory 信息: Bean factory for application context [org.springframework.context.support.ClassPathXmlApplicationContext@1a05308]: org.springframework.beans.factory.support.DefaultListableBeanFactory@2bb514 2012-3-9 23:30:58 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons 信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@2bb514: defining beans [dataSource,txManager,org.springframework.aop.config.internalAutoProxyCreator,org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0,org.springframework.transaction.interceptor.TransactionInterceptor#0,org.springframework.transaction.config.internalTransactionAdvisor,personService]; root of factory hierarchy ++++++++得到所有Person 2 TomCat 12 女 3 hongten 21 男 4 liufang 21 女 5 Divide 20 男 6 Jone 20 女 7 蘇東坡 21 男 ****************** 2 TomCat 12 女 |
當(dāng)然我們可以用配置文件來存放我們的數(shù)據(jù)源信息:
/spring_1100_spring+jdbc/src/jdbc.properties
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driverClassName=org.gjt.mm.mysql.Driver url=jdbc\:mysql\://localhost\:3307/spring?useUnicode\=true&characterEncoding\=UTF-8 username=root password=root initialSize=1 maxActive=300 maxIdle=2 minIdle=1 |
相應(yīng)要修改:
/spring_1100_spring+jdbc/src/bean.xml
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<? 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"> <!-- 讀取jdbc.properties配置文件 --> < context:property-placeholder location = "classpath:jdbc.properties" /> <!--配置數(shù)據(jù)源 --> < 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}" /> <!-- 連接池啟動(dòng)時(shí)的初始值 --> < property name = "initialSize" value = "${initialSize}" /> <!-- 連接池的最大值 --> < property name = "maxActive" value = "${maxActive}" /> <!-- 最大空閑值.當(dāng)經(jīng)過一個(gè)高峰時(shí)間后,連接池可以慢慢將已經(jīng)用不到的連接慢慢釋放一部分,一直減少到maxIdle為止 --> < property name = "maxIdle" value = "${maxIdle}" /> <!-- 最小空閑值.當(dāng)空閑的連接數(shù)少于閥值時(shí),連接池就會(huì)預(yù)申請(qǐng)去一些連接,以免洪峰來時(shí)來不及申請(qǐng) --> < property name = "minIdle" value = "${minIdle}" /> </ bean > <!-- 采用注解方式來配置事務(wù)。針對(duì)數(shù)據(jù)源的事務(wù)管理器 ,把我們定義的數(shù)據(jù)源注入到DataSourceTransactionManager類的屬性dataSource中 --> < bean id = "txManager" class = "org.springframework.jdbc.datasource.DataSourceTransactionManager" > < property name = "dataSource" ref = "dataSource" /> </ bean > <!-- 引入命名空間: 1.xmlns:tx="http://www.springframework.org/schema/tx 2.http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd 采用@Transaction注解方式使用事務(wù)管理器 --> < tx:annotation-driven transaction-manager = "txManager" /> <!-- 配置業(yè)務(wù)bean:PersonServiceBean --> < bean id = "personService" class = "com.b510.service.impl.PersonServiceBean" > <!-- 向?qū)傩詃ataSource注入數(shù)據(jù)源 --> < property name = "dataSource" ref = "dataSource" ></ property > </ bean > </ beans > |
運(yùn)行結(jié)果是相同的:
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2012-3-10 0:23:59 org.springframework.context.support.AbstractApplicationContext prepareRefresh 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@c1b531: display name [org.springframework.context.support.ClassPathXmlApplicationContext@c1b531]; startup date [Sat Mar 10 00:23:59 CST 2012]; root of context hierarchy 2012-3-10 0:23:59 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions 信息: Loading XML bean definitions from class path resource [bean.xml] 2012-3-10 0:23:59 org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory 信息: Bean factory for application context [org.springframework.context.support.ClassPathXmlApplicationContext@c1b531]: org.springframework.beans.factory.support.DefaultListableBeanFactory@1aa57fb 2012-3-10 0:23:59 org.springframework.core.io.support.PropertiesLoaderSupport loadProperties 信息: Loading properties file from class path resource [jdbc.properties] 2012-3-10 0:23:59 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons 信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1aa57fb: defining beans [org.springframework.beans.factory.config.PropertyPlaceholderConfigurer#0,dataSource,txManager,org.springframework.aop.config.internalAutoProxyCreator,org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0,org.springframework.transaction.interceptor.TransactionInterceptor#0,org.springframework.transaction.config.internalTransactionAdvisor,personService]; root of factory hierarchy ++++++++得到所有Person 2 TomCat 12 女 3 hongten 21 男 4 liufang 21 女 5 Divide 20 男 6 Jone 20 女 7 蘇東坡 21 男 8 蘇東坡 21 男 ****************** 2 TomCat 12 女 |
以上就是本文的全部?jī)?nèi)容,希望對(duì)大家的學(xué)習(xí)有所幫助,也希望大家多多支持服務(wù)器之家。
原文鏈接:http://www.cnblogs.com/hongten/archive/2012/03/09/java_spring_jdbc.html