一直做Android前端开发,想学学后台J2EE服务器开发 的知识,零基础第一步学习一个简单例子:
一, demo结构:
数据库:
二, SpingMVC框架:
拷贝相应的jar到lib纹路下:
三, 在myeclipse中添加Spring支持:
右键点击该工程,在对话框中选择“MyEclipse->Add Spring Capabilities...”,添加Spring,并进行相关配置,如图4所示,采用默认配置即可。本例选用的spring3.1。
配置Hibernate
1)右键点击该工程,在对话框中选择“MyEclipse->Add Hibernate Capabilities...”,添加Hibernate,并进行相关配置,如图5、图6、图7、图8、图9所示。
由于需要使用Spring配置Hibernate,因此选中所有的Library。
图 5
选择Spring的配置文件applicationContext.xml进行配置。
图 6
选择已有的Spring配置文件,并使用Spring配置Hibernate中的SessionFactory,SessionFactory的bean id为sessionFactory。
图 7
配置数据源DataSource的bean id为dataSource,且其配置信息采用数据库连接MySQL。
图 8
不另写SessionFactory类,而采用Spring为Hibernate已设计的SessionFactory类。
图 9
4.数据库逆向工程
1)切换Perspective至MyEclipse Hibernate,右键点击数据表myaccount,在对话框中选择“Hibernate Reverse Engineering...”,对user表的关系对象映射进行配置,如图10所示,其中第一个红框用于选择Java源文件目录,第二个红框用于选择是否创建关系对象映射文件,以hbm.xml结尾,第三个红框用于选择是否创建数据对象类,第四个红框用于选择是否创建数据访问对象类,均选择是,其他采用默认配置即可。
图 10
Spring以及Hibernate配置中图片参考别人demo的配置,跟本例在女文件目录,文件名等方面不一致(仅作参考),具体数据库反向等操作根据自己建立的数据库连接文件来。配置文件:web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
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_3_0.xsd">
<display-name>SpringMVC Learning</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- 加载所有的配置文件 -->
<!-- <context-param> -->
<!-- <param-name>contextConfigLocation</param-name> -->
<!-- <param-value>classpath:config/applicationContext.xml</param-value> -->
<!-- </context-param> -->
<servlet>
<servlet-name>Dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:config/spring-mvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>Dispatcher</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!-- 字符集过滤器 -->
<filter>
<description>字符集过滤器</description>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<description>字符集编码</description>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
主要指定相应的servlet。
配置文件:spring-mvc :
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/context/spring-mvc-3.2.xsd">
<!-- Action definition -->
<bean id="loginController" class="com.oliver.web.controller.LoginController">
<property name="successView" value="showAccount"></property>
<property name="failView" value="login"></property>
</bean>
<!-- 开启注解 -->
<!-- <mvc:annotation-driven /> -->
<!-- 静态资源(js/image)的访问 -->
<!-- <mvc:resources location="/js/" mapping="/js/**"/> -->
<!-- 上传文件时需要用到的分解器,默认将编码转为utf-8 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding">
<value>UTF-8</value>
</property>
</bean>
<!-- urlMapping -->
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="/pages/login.do">loginController</prop>
</props>
</property>
</bean>
<!--definition of ViewResolver -->
<!-- 配置SpringMVC的视图渲染器, 让其前缀为:/ 后缀为.jsp 将视图渲染到/pages/<method返回值>.jsp中 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/pages/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
没有用注解,主要指定控制模块,urlmapping以及识图渲染。
配置文件:applicationContext.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:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd">
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName"
value="com.mysql.jdbc.Driver">
</property>
<property name="url"
value="jdbc:mysql://localhost:3306/myaccount">
</property>
<property name="username" value="root"></property>
<property name="password" value="123456"></property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
</props>
</property>
<property name="mappingResources">
<list>
<value>com/oliver/dao/Account.hbm.xml</value></list>
</property></bean>
<bean id="AccountDAO" class="com.oliver.dao.AccountDAO">
<property name="sessionFactory">
<ref bean="sessionFactory"/>
</property>
</bean>
</beans>
主要配置数据源,sessionfactory等以及具体操作的bean。
五,相应的逻辑实现:
Account.java ,AccountDAO以及Account.hbm.xml为数据表反向自动生成;
控制模块实现简单逻辑:
LoginController.java:
package com.oliver.web.controller;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;
import com.oliver.dao.Account;
import com.oliver.dao.AccountDAO;
public class LoginController extends AbstractController {
private String successView;
private String failView;
public String getSuccessView() {
return successView;
}
public void setSuccessView(String successView) {
this.successView = successView;
}
public String getFailView() {
return failView;
}
public void setFailView(String failView) {
this.failView = failView;
}
@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request,
HttpServletResponse response) throws Exception {
// TODO Auto-generated method stub
String username=request.getParameter("username");
String password=request.getParameter("password");
Account account =getListAccount(username);
Map<String ,Object> model=new HashMap<String,Object>();
if(account !=null){
model.put("account", account);
return new ModelAndView(getSuccessView(),model);
}else{
model.put("error", "卡号和密码不正确");
return new ModelAndView(getFailView(),model);
}
}
@SuppressWarnings("unchecked")
public Account getListAccount(String username){
Account thisAccount=null;
//从src/applicationContext.xml装载BeanFactory
Resource resource=new ClassPathResource("config/applicationContext.xml");
BeanFactory factory = new XmlBeanFactory(resource);
//从BeanFactory获取UserDAO
AccountDAO accountDAO = (AccountDAO) factory.getBean("AccountDAO");
//添加新User
List accountlist=accountDAO.findByUsername(username);
Iterator<Account> itaccount=accountlist.iterator();
while(itaccount.hasNext()){
Account myaccount=itaccount.next();
thisAccount=myaccount;
}
return thisAccount;
}
}
本例仅仅是联系demo,读取数据表中的内容(只有一项内容)所以才那么写。
六, 测试:
浏览器输入 :
http://localhost:8090/MvcSpringTest/pages 即可进入相应的demo功能测试。
具体实例源码下载链接:
http://download.csdn.net/detail/ccm_oliver/8311087