springmvc 例

1、结构

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2、控制器

package com.ai.customer.controller;

import java.io.IOException;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.context.request.ServletWebRequest;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.support.RequestContext;

import com.ai.customer.model.CustomerInfo;
import com.ai.customer.service.ICustomerService;

/*
 * @Controller
 * 控制器
 *
 * @Service
 * 用于标注业务层组件
 *
 * @Repository
 * 用于标注数据訪问组件。即DAO组件
 *
 * @Component
 *  泛指组件，当组件不好归类的时候我们能够使用这个注解进行标注，（如今能够都用此注解）
 *  同上事实上跟@Service/@Repository/@Controller 一样仅仅只是它们 利用分层 好区分
 *
 * @Autowired\@Resource
 *  自己主动注入 实现的的是 setXxx()方法  getXxx()方法
 *
 * @RequestMapping(value='xxx.do',method=RequestMethod.GET/RequestMethod.POST/..)
 * value訪问路径/method请发的方法，注：请求方法一旦设定仅仅能使用指定的方法訪问
 *  在类前面定义，则将url和类绑定。
 *  在方法前面定义，则将url和类的方法绑定
 *
 * @RequestParam("name") ==uname
 *  一般用于将指定的请求參数付给方法中形參
 *
 * @Scope
 * 创建 bean的作用域 singleton-->多例  Property-->多例   还有request 等等
 * 使用reqeust 须要在web.xml 配置监听器 详细去网上搜索
 *
 */

@Controller
public class CustomerAction {

	@Autowired
	private ICustomerService  customerService;

	@RequestMapping(value="/login.do")
	public String postLogingMethod(HttpServletRequest reqeust){
		System.out.println("訪问到了控制器");
		System.out.println(customerService);
		CustomerInfo cus=customerService.queryCustomer().get(0);
		System.out.println("身份证Id"+cus.getCardid());
		reqeust.getSession().setAttribute("cus", cus);
		return "page/admin/index";
	}

	/*
	 * @RequestParam 使用
	 * @RequestParam("name") ==uname 一般用于将指定的请求參数付给方法中形參
	 */
	@RequestMapping("/param.do" )
	public String paramMethod(@RequestParam("name")String uname){
		System.out.println("uname:"+uname);
		//重定向 页面
		return "redirect:index.jsp";
	}

	/*
	 *  页面传递过来的參数 自己主动赋值 xxx.do?

name=张三&customerid=12342423 post get请求皆可
	 *  ajax $.xxx("xxx.do",{name:'张三',customerid:'123435345'},function(data){});
	 */
	@RequestMapping("/rq.do")
	public String allMethod(String customerid,String name){
		System.out.println(customerid+":"+name);
		return "index";
	}

	/*
	 * 封装实体对象 表单提交数据 表单中cus.name名
	 * <input type="text" name="cus.name">
	 * <input type="text" name="cus.customerid">
	 */
	@RequestMapping("/cus.do")
	public String setCustomer(CustomerInfo cus){
		System.out.println(cus.getCustomerid()+":"+cus.getName());
		return "index";
	}

	/*springmvc 中获取request对象
	 * 1、能够直接在方法中定义 getReqeust(CustomerInfo cus,HttpServletRequest req)
	 *
	 * 2、使用注解Autowired
	 * 	@Autowired
	 * private HttpServletRequest request;
	 *
	 * 3、使用例如以下方法
	 * ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
     * servletRequestAttributes.getRequest();
	 *
	 */
	@RequestMapping("/reqeust.do")
	public String getReqeust(CustomerInfo cus,HttpServletRequest req){
		//获取reqeust对象
		req.setAttribute("cus", cus);
		//获取session对象
		req.getSession();
		return "index";
	}

	/* 获取reponse 能够使用例如以下方法 也能够使用：在方法中传递
	 *  getResponse(String name,String customerid,HttpservletResponse response)
	 */
	@RequestMapping("/response.do")
	public void  getResponse(String name,String customerid,HttpServletResponse response){

		response.setContentType("text/html;charset=utf-8");

		System.out.println(name+":"+customerid);
		try {
			response.getWriter().write(customerid.toString());
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	/*ModelAndView 与 ModelMap 的差别
	 *
	 * ModelAndView
	 * 作用一 ：设置转向地址/对象必须手动创建（主要差别）
	 *
	 * 作用二：用于传递控制方法处理结果数据到结果页面，
	 * 也就是说我们把须要在结果页面上须要的数
	 * 据放到ModelAndView对象中就可以，他
	 * 的作用相似于request对象的setAttr
	 * ibute方法的作用，用来在一个请求过程中
	 * 传递处理的数据。通过下面方法向页面传递 參数：addObject(String key,Object value);
	 *
	 *
	 * ModelMap
	 *一、 ModelMap的实例是由bboss mvc框架自己主动创建并作为控制器方法參数传入。
	 * 用户无需自己创建。
	 *
	 * 二、ModelMap对象主要用于传递控制方法处理数据到结果页面，也就是说我们把结果页面上须要的数据放到ModelMap对象中就可以，
	 * 他的作用相似于request对象的setAttribute方法的作用。用来在一个请求过程中传递处理的数据。

通过下面方法向页面传递參数：
	 * addAttribute(String key,Object value);
	 * 在页面上能够通过el变量方式$key或者bboss的一系列数据展示标签获取并展示modelmap中的数据。
	 * modelmap本身不能设置页面跳转的url地址别名或者物理跳转地址，那么我们能够通过控制器方法的返回值来设置跳转url地址
	 * 别名或者物理跳转地址。

*/

	@RequestMapping("/modelmap.do")
    public String modelMapMethod(String name,ModelMap model) {
          //将数据放置到ModelMap对象model中,第二个參数能够是不论什么java类型
          model.addAttribute("modelMap",name);
          //返回跳转地址
          return "index";
    }  

	@RequestMapping("/modelandmap.do")
    public ModelAndView modelAndMapMethod(String name) {
          //构建ModelAndView实例，并设置跳转地址
          ModelAndView view = new ModelAndView("index");
          //将数据放置到ModelAndView对象view中,第二个參数能够是不论什么java类型
          view.addObject("modelAndMap",name);
         //返回ModelAndView对象view
          return view;
    }  

}

3、DAO接口

package com.ai.customer.dao;

import java.util.List;

import com.ai.customer.model.CustomerInfo;

public interface ICustomerDao {

	//查询Customer
	public List<CustomerInfo> queryCustomer();
	public String all();
}

4、DAO接口实现

package com.ai.customer.daoimpl;

import java.util.List;

import org.hibernate.Hibernate;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository;

import com.ai.customer.dao.ICustomerDao;
import com.ai.customer.model.CustomerInfo;

@Repository
public class CustomerDao implements ICustomerDao {

	@Autowired
	private SessionFactory sessionFactory;

//	public void setSessionFactory(SessionFactory sessionFactory) {
//		this.sessionFactory = sessionFactory;
//	}

	public List<CustomerInfo> queryCustomer() {

		//System.out.println(sessionFactory);

		//Configuration config=new Configuration().configure("config/hibernet/hibernate.cfg.xml");

		//SessionFactory f=config.buildSessionFactory();

		Session session=sessionFactory.openSession();

		List<CustomerInfo> cus=session.createQuery("from CustomerInfo").list();

		session.close();

		return cus;
	}

	public String all(){

		return "注解成功";
	}

	public static void main(String[] args) {

		Configuration config=new Configuration().configure("config/hibernet/hibernate.cfg.xml");

		SessionFactory f=config.buildSessionFactory();

		Session session=f.openSession();

		List<CustomerInfo> cus=session.createQuery("from CustomerInfo").list();

		session.close();

		System.out.println(cus.get(0).getCustomerid());

//		System.out.println(f.getCurrentSession().createQuery("from CustomerInfo").list());
	}
}

5、实体类

package com.ai.customer.model;

import java.io.Serializable;

public class CustomerInfo implements Serializable {

	/**
	 *
	 */
	private static final long serialVersionUID = 1L;

	private String customerid;//个人编号

	private String cardid;//身份证id

	private String name;//姓名

	private String sex;//性别(男、女)

	private String birthDate;//出生日期

	private String householdRegister;//户籍所在地址

	private String photo;//照片

	private String regTime;

	private String loginCount;

	private String lastLoginTime;

	public String getCustomerid() {
		return customerid;
	}

	public void setCustomerid(String customerid) {
		this.customerid = customerid;
	}

	public String getCardid() {
		return cardid;
	}

	public void setCardid(String cardid) {
		this.cardid = cardid;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	public String getBirthDate() {
		return birthDate;
	}

	public void setBirthDate(String birthDate) {
		this.birthDate = birthDate;
	}

	public String getHouseholdRegister() {
		return householdRegister;
	}

	public void setHouseholdRegister(String householdRegister) {
		this.householdRegister = householdRegister;
	}

	public String getPhoto() {
		return photo;
	}

	public void setPhoto(String photo) {
		this.photo = photo;
	}

	public String getRegTime() {
		return regTime;
	}

	public void setRegTime(String regTime) {
		this.regTime = regTime;
	}

	public String getLoginCount() {
		return loginCount;
	}

	public void setLoginCount(String loginCount) {
		this.loginCount = loginCount;
	}

	public String getLastLoginTime() {
		return lastLoginTime;
	}

	public void setLastLoginTime(String lastLoginTime) {
		this.lastLoginTime = lastLoginTime;
	}

	public static long getSerialversionuid() {
		return serialVersionUID;
	}
}

6、customer.hbm.xml配置文件

<!DOCTYPE hibernate-mapping PUBLIC
   "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
   "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

   <hibernate-mapping>

   	<class name="com.ai.customer.model.CustomerInfo" table="customerInfo">

   		<id name="customerid" column="customerid" type="java.lang.String">
   			<generator class="assigned"/>
   		</id>

	   	<property name="cardid" type="java.lang.String"/>
	   	<property name="name" type="java.lang.String"/>
	   	<property name="sex" type="java.lang.String"/>
	   	<property name="birthDate" type="java.lang.String"/>
	   	<property name="householdRegister" type="java.lang.String"/>
	   	<property name="photo" type="java.lang.String"/>
	   	<property name="regTime" type="java.lang.String"/>
	   	<property name="loginCount" type="java.lang.String"/>
	   	<property name="lastLoginTime" type="java.lang.String"/>
   	</class>

   </hibernate-mapping>

7、service 接口

package com.ai.customer.service;

import java.util.List;

import com.ai.customer.model.CustomerInfo;

public interface ICustomerService {

	//查询Customer
	public List<CustomerInfo> queryCustomer();

	public String all();
}

8、service接口实现

package com.ai.customer.serviceImpl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository;
import org.springframework.stereotype.Service;

import com.ai.customer.dao.ICustomerDao;
import com.ai.customer.model.CustomerInfo;
import com.ai.customer.service.ICustomerService;

@Service
public class CustomerService implements ICustomerService{

	@Autowired
	private ICustomerDao customerDao;

	public List<CustomerInfo> queryCustomer() {
		return customerDao.queryCustomer();
	}

	public String all() {
		// TODO Auto-generated method stub
		return customerDao.all();
	}

}

9、hibernate.cfg.xml配置文件

<!DOCTYPE hibernate-configuration PUBLIC
	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
	"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

    <hibernate-configuration>
	    <!--表明下面的配置是针对session-factory配置的。SessionFactory是Hibernate中的一个类，这个类主要负责保存HIbernate的配置信息，以及对Session的操作-->
		<session-factory>

		<!--hibernate.dialect 仅仅是Hibernate使用的数据库方言,就是要用Hibernate连接那种类型的数据库server。

-->
			<property name="dialect">
				org.hibernate.dialect.MySQLDialect
			</property>
			<property name="connection.url">
				jdbc:mysql://localhost:3306/data
			</property>
			<property name="connection.username">root</property>
			<property name="connection.password">123456</property>
			<property name="connection.driver_class">
				com.mysql.jdbc.Driver
			</property>

		<!--数据库连接池的大小-->
		<property name="hibernate.connection.pool.size">10</property>

		<!--是否在后台显示Hibernate用到的SQL语句，开发时设置为true，便于差错，程序执行时能够在Eclipse的控制台显示Hibernate的执行Sql语句。项目部署后能够设置为false，提高执行效率-->
		<property name="hibernate.show_sql">true</property>

		<!--jdbc.fetch_size是指Hibernate每次从数据库中取出并放到JDBC的Statement中的记录条数。

Fetch Size设的越大，读数据库的次数越少，速度越快。Fetch Size越小。读数据库的次数越多。速度越慢-->
		<property name="jdbc.fetch_size">50</property>

		<!--jdbc.batch_size是指Hibernate批量插入,删除和更新时每次操作的记录数。Batch Size越大，批量操作的向数据库发送Sql的次数越少，速度就越快。相同耗用内存就越大-->
		<property name="jdbc.batch_size">23</property>

		<!--jdbc.use_scrollable_resultset是否同意Hibernate用JDBC的可滚动的结果集。对分页的结果集。对分页时的设置很有帮助-->
		<property name="jdbc.use_scrollable_resultset">false</property>

		<!--connection.useUnicode连接数据库时是否使用Unicode编码-->
		<property name="Connection.useUnicode">true</property>

		<!--connection.characterEncoding连接数据库时数据的传输字符集编码方式。最好设置为gbk。用gb2312有的字符不全-->
		<property name="connection.characterEncoding">gbk</property>

		<!--连接池的最小连接数-->
		<property name="hibernate.c3p0.min_size">5</property>

		<!--最大连接数-->
		<property name="hibernate.c3p0.max_size">500</property>

		<!--连接超时时间-->
		<property name="hibernate.c3p0.timeout">1800</property>

		<!--statemnets缓存大小-->
		<property name="hibernate.c3p0.max_statements">0</property>

		<!--每隔多少秒检測连接是否可正常使用  -->
		<property name="hibernate.c3p0.idle_test_period">121</property>

		<!--当池中的连接耗尽的时候，一次性添加的连接数量,默觉得3-->
		<property name="hibernate.c3p0.acquire_increment">5</property>

		<property name="hibernate.c3p0.validate">true</property>

		<mapping resource="com/ai/customer/model/CustomerInfo.hbm.xml" />

	</session-factory>

</hibernate-configuration>    

10、spring-application.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: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.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-3.2.xsd">

	<!-- 配置数据源
	<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">

		<property name="driverClassName" value="com.mysql.jdbc.Driver"/>

		<property name="url" value="jdbc:mysql://localhost/data"/>

		<property name="username" value="root"/>

		<property name="password" value="123456"/>
	</bean>
	 -->
	<!-- hibernet 配置 -->
	<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

		<!-- <property name="dataSource" ref="dataSource"/> --> 

		<property name="configLocation">
			<value>classpath:config/hibernet/hibernate.cfg.xml</value>
		</property>

	</bean>

	<!-- 配置事务 -->
	<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>

	<!-- 使用代理配置事务管理 -->
	<bean id="transactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" abstract="true">
		<property name="transactionManager" ref="transactionManager" />
		<property name="transactionAttributes">
	        <props>
	        <!--  	假设当前没有事务，就新建一个事务，假设已经存在一个事务中，增加到这个事务中。 -->
	            <prop key="add*">PROPAGATION_REQUIRED,-Exception</prop>
	            <prop key="modify*">PROPAGATION_REQUIRED,-myException</prop>
	            <prop key="del*">PROPAGATION_REQUIRED</prop>
	            <prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>
	            <prop key="*">PROPAGATION_REQUIRED</prop>
	        </props>
	    </property>
	</bean>
</beans>

11、spring-mvc.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: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.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/mvc/spring-mvc-3.2.xsd">

<!-- 扫描包 -->
<context:component-scan base-package="com.ai.customer" />

 <!-- 启动注解 -->
 <mvc:annotation-driven />

<!-- 文件上传 -->
 <bean id="multipartResolver"
   class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
   <!-- 设置上传文件的最大尺寸为10MB -->
   <property name="maxUploadSize">
       <value>10000000</value>
   </property>
  </bean>  

<!--  静态文件訪问 -->
 <mvc:default-servlet-handler/>
 <!-- 对模型视图名称的解析，即在模型视图名称加入前后缀 -->
 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" >

 	<property name="prefix" value="/"/>
 	<property name="suffix" value=".jsp"/>
 </bean> 

</beans>

12、web.xml配置文件

<?xml version="1.0" encoding="UTF-8"?

>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		 xmlns="http://java.sun.com/xml/ns/javaee"
		 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
		 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>springmvc_sh</display-name>
  <welcome-file-list>
    <welcome-file>login/login.jsp</welcome-file>
  </welcome-file-list>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:config/spring/spring-appliction.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath*:config/spring/spring-*.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <listener>
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
  </listener>
  <filter>
    <filter-name>codeUTF-8</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>codeUTF-8</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

	<error-page>
		<error-code>404</error-code>
		<location>/login/loginIput.jsp</location>
	</error-page>
	<error-page>
		<error-code>500</error-code>
		<location>/login/login.jsp</location>
	</error-page>
</web-app>