spring概述

1.  概述

Spring是分层的Java SE/EE应用一站式的轻量级开源框架，以IoC（Inverse of Control: 反转控制）和AOP（Aspect Oriented Programming: 面向切面编程）为内核，提供了展现层Spring MVC和持久层Spring JDBC以及业务层事务管理等众多的企业级应用技术，此外，Spring还整合了众多著名的第三方框架和类库，逐渐成为使用最多的Java EE企业应用开源框架。

baobaotao-dao.xml

 <?xml version="1.0" encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"><bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"destroy-method="close"><property name="driverClassName" value="com.mysql.jdbc.Driver"></property><property name="url" value="jdbc:mysql://localhost:3306/sampledb"></property><property name="username" value="root"></property><property name="password" value="admin"></property></bean><bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"><property name="dataSource" ref="dataSource"></property></bean><bean id="loginLogDao" class="com.baobaotao.dao.jdbc.LoginLogDaoImpl"><property name="jdbcTemplate" ref="jdbcTemplate"></property></bean><bean id="userDao" class="com.baobaotao.dao.jdbc.UserDaoImpl"><property name="jdbcTemplate" ref="jdbcTemplate"></property></bean></beans>     

 baobaotao-service.xml

<?xml version="1.0" encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource"></property></bean><bean id="userServiceTarget" class="com.baobaotao.service.UserServiceImpl"><property name="userDao" ref="userDao"></property><property name="loginLogDao" ref="loginLogDao"></property></bean><bean id="userService" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"><property name="transactionManager" ref="transactionManager"></property><property name="target" ref="userServiceTarget"></property><property name="transactionAttributes" ><props><prop key="findUserByUserName">PROPAGATION_REQUIRED,readOnly</prop><prop key="hasMatchUser">>PROPAGATION_REQUIRED,readOnly</prop><prop key="loginSuccess">>PROPAGATION_REQUIRED</prop></props></property></bean></beans>  

 

 package com.baobaotao.dao.jdbc;import java.sql.ResultSet;import java.sql.SQLException;import org.springframework.jdbc.core.JdbcTemplate;import org.springframework.jdbc.core.RowCallbackHandler;import com.baobaotao.dao.UserDao;import com.baobaotao.domain.User;public class UserDaoImpl implements UserDao {private JdbcTemplate jdbcTemplate;public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {this.jdbcTemplate = jdbcTemplate;}public User findUserByUserName(final String userName) {String sqlStr=" select user_id,user_name,credits "+" from t_user where user_name=?";final User user=new User();jdbcTemplate.query(sqlStr, new Object[]{userName},new RowCallbackHandler(){public void processRow(ResultSet rs) throws SQLException {user.setUserId(rs.getInt("user_id"));user.setUserName(userName);user.setCredits(rs.getInt("credits"));}});return user;}public int getMatchCount(String userName, String password) {String sqlStr=" select count(*) from t_user "+" where user_name=? and password=? ";return jdbcTemplate.queryForInt(sqlStr,new Object[]{userName,password});}public void updateLoginInfo(User user) {String sqlStr=" update t_user set last_visit=?,last_ip=?.credits=? "+" where user_id=? ";jdbcTemplate.update(sqlStr,new Object[]{user.getLastVisit(),user.getLastlp(),new Integer(user.getCredits()),new Integer(user.getUserId())});}} 

 package com.baobaotao.dao.jdbc;import com.baobaotao.dao.LoginLogDao;import com.baobaotao.domain.LoginLog;import org.springframework.jdbc.core.JdbcTemplate;public class LoginLogDaoImpl implements LoginLogDao{private JdbcTemplate jdbcTemplate;public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {this.jdbcTemplate = jdbcTemplate;}public void insertLoginLog(LoginLog loginLog) {String sqlStr=" insert into t_login_log(user_id,ip,login_datetime) "+" values (?,?,?) ";jdbcTemplate.update(sqlStr,new Object[]{new Integer(loginLog.getUserid()),loginLog.getIp(),loginLog.getLoginDate()});}}  

package com.baobaotao.service;import com.baobaotao.dao.LoginLogDao;import com.baobaotao.dao.UserDao;import com.baobaotao.domain.LoginLog;import com.baobaotao.domain.User;public class UserServiceImpl implements UserService {private LoginLogDao loginLogDao;private UserDao userDao;public void setLoginLogDao(LoginLogDao loginLogDao) {this.loginLogDao = loginLogDao;}public void setUserDao(UserDao userDao) {this.userDao = userDao;}public User findUserByUserName(String userName) {return userDao.findUserByUserName(userName);}public boolean hasMatchUser(String userName, String password) {int matchCount=userDao.getMatchCount(userName, password);return matchCount>0;}public void loginSuccess(User user) {user.setCredits(user.getCredits()+5);LoginLog loginLog=new LoginLog();loginLog.setUserid(user.getUserId());loginLog.setIp(user.getLastlp());loginLog.setLoginDate(user.getLastVisit());userDao.updateLoginInfo(user);loginLogDao.insertLoginLog(loginLog);}}