部分代码(可下载附件浏览全部)
UserDao
package com.spring.dao.impl; import java.sql.ResultSet; import java.sql.SQLException; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.jdbc.core.RowCallbackHandler; import org.springframework.stereotype.Repository; import com.spring.dao.IUserDao; import com.spring.pojo.User; @Repository //通过spring注解定义一个DAO public class UserDao implements IUserDao{ @Autowired //自动注入JdbcTemplate的Bean private JdbcTemplate jdbcTemplate; public int getMatchCount(String userName, String password) { // TODO Auto-generated method stub String sql="select count(*) from t_user where user_name=? and password=?"; int count=jdbcTemplate.queryForInt(sql, new Object[]{userName,password}); return count; } public User findUserByUserName(final String userName) { // TODO Auto-generated method stub String sql="select user_id,user_name from t_user where user_name=?"; final User user=new User(); jdbcTemplate.query(sql, new Object[]{userName},new RowCallbackHandler() {//匿名类方式实现的回调函数 public void processRow(ResultSet rs) throws SQLException { // TODO Auto-generated method stub user.setUserId(rs.getInt("user_id")); user.setUserName(userName); } }); return user; } public void updateLoginInfo(User user) { // TODO Auto-generated method stub String sql="update t_user set last_visit=?,last_ip=? where user_id=?"; jdbcTemplate.update(sql, new Object[]{user.getLastVisit(),user.getLastIp(),user.getUserId()}); } public JdbcTemplate getJdbcTemplate() { return jdbcTemplate; } public void setJdbcTemplate(JdbcTemplate jdbcTemplate) { this.jdbcTemplate = jdbcTemplate; } }
Controller
package com.spring.controller; import java.util.Date; import javax.servlet.http.HttpServletRequest; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.spring.biz.IUserBiz; import com.spring.command.LoginCommand; import com.spring.pojo.User; @Controller //标注成为一个Spring MVC的Controller @RequestMapping(value="/admin") public class LoginController { @Autowired private IUserBiz userBiz; @RequestMapping(value="/login.html")//负责处理/login.html的请求 public String loginPage(){ return "login"; } @RequestMapping(value="/loginCheck.html") public ModelAndView loginCheck(HttpServletRequest request, LoginCommand loginCommand){//loginCommand一个简单的pojo类属性名与表单相同 boolean isValidUser=userBiz.hasMatchUser(loginCommand.getUserName(), loginCommand.getPassword()); if (!isValidUser) { return new ModelAndView("login","error","用户名/密码错误..!"); }else { User user=userBiz.findUserByUserName(loginCommand.getUserName()); user.setLastIp(request.getRemoteAddr()); user.setLastVisit(new Date()); userBiz.loginSuccess(user); request.getSession().setAttribute("user", user); return new ModelAndView("index"); } } public void setUserBiz(IUserBiz userBiz) { this.userBiz = userBiz; } public IUserBiz getUserBiz() { return userBiz; } }
applicationContext.xml配置
<?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:p="http://www.springframework.org/schema/p" 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-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"> <!--扫描类包,将标注Spring注解的类自动转化Bean,同时完成Bean的注入--> <context:component-scan base-package="com.spring.dao.impl"/> <context:component-scan base-package="com.spring.biz.impl"/> <!-- 定义一个使用DBCP实现的数据源 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" p:driverClassName="com.mysql.jdbc.Driver" p:url="jdbc:mysql://localhost:3306/sample_db?useUnicode=true&characterEncoding=utf-8" p:username="root" p:password=""/> <!-- 定义JDBC模板Bean --> <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate" p:dataSource-ref="dataSource"/> <!-- 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager" p:dataSource-ref="dataSource"/> <!-- 通过AOP配置提供事务增强,让biz包下所有Bean的所有方法拥有事务 --> <aop:config proxy-target-class="true"> <aop:pointcut id="serviceMethod" expression=" execution(* com.spring.biz.impl..*(..))" /> <aop:advisor pointcut-ref="serviceMethod" advice-ref="txAdvice"/> </aop:config> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="*"/> </tx:attributes> </tx:advice> </beans>
web.xml配置
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <display-name></display-name> <!-- 1 从类路径下加载Spring配置文件,classpath关键字特指在类路径下加载 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!-- 负责启动Spring容器的监听器,它将引用1处的上下文参数获得Spring配置文件地址 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- Spring MVC的主控Servlet --> <servlet> <servlet-name>viewspace</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>2</load-on-startup> </servlet> <servlet-mapping> <servlet-name>viewspace</servlet-name> <url-pattern>*.html</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
启动服务:访问时得加上LoginController 控制器前的@RequestMapping(value="/admin"),即
http://localhost:8080/spring1/admin/login.html
附件中有详细注释
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