实例：SSH整合Maven实现图片的添加与查询显示

      使用SSH框架，并且结合Maven来实现图片的添加与查询显示功能。

      1、整个功能的结构如图所示：在Java类中包含了action（控制层）、model（模型层）、service（接口）、serviceImpl（接口的实现类），还包括Spring的配置文件applicationContext.xml，Spring依赖注入配置文件applicationContext_bean.xml，Spring对数据库链接的配置文件applicationContext_db.xml，Struts2的配置文件struts.xml，初始化工程配置信息的web.xml，Maven的配置文件pom.xml。还包括添加图片页码inputphoto.jsp，添加图片成功页面add_success.jsp，查询图片outputphoto.jsp，显示查询出的页面out.jsp。

      

     

2、配置pom.xml文件，导入SSH的jar包。如果你没有用到Maven技术，这一步可以跳过不用看。但是你要用合适的方法导入SSh的jar包。

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"><modelVersion>4.0.0</modelVersion><!-- 版本号，自己定义 --><groupId>price</groupId>  <!-- 组的ID --><artifactId>photo</artifactId><!-- 此工程对应的ID，一个 groupId下面可以有多个不同名的artifactId--><packaging>war</packaging>  <!-- 有jar和war。war定义工程，定义为jar可以被其他的工程引用 --><version>0.0.1-SNAPSHOT</version><name>photo Maven Webapp</name><url>http://maven.apache.org</url><build><finalName>photo</finalName>  <!-- 工程名 --></build><dependencies><!-- struts包 --><!-- struts2核心包 --><dependency><groupId>org.apache.struts</groupId><artifactId>struts2-core</artifactId><version>2.3.4</version></dependency>        <!-- struts2与spring整合的包 --><dependency><groupId>org.apache.struts</groupId><artifactId>struts2-spring-plugin</artifactId><version>2.3.4</version></dependency>        <!-- 在 Struts2中要使用 Ajax获得Json数据。要使用Ajax必须引用此Jar --><dependency><groupId>org.apache.struts</groupId><artifactId>struts2-json-plugin</artifactId><version>2.3.4</version></dependency><!-- Hibernate包 --><!-- Hibernate核心包 --><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-core</artifactId><version>3.5.6-Final</version></dependency><!-- spring3可选的依赖注入，不可缺少 --><dependency><groupId>aspectj</groupId><artifactId>aspectjweaver</artifactId><version>1.5.3</version></dependency><!-- 扩展Java类与实现Java接口 --><dependency><groupId>cglib</groupId><artifactId>cglib</artifactId><version>2.1_3</version></dependency>        <!-- 运用Log4j必须用到这个包 --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.6.1</version><scope>compile</scope></dependency><!-- Spring包 --><!-- Spring核心包 --><dependency><groupId>org.springframework</groupId><artifactId>spring</artifactId><version>2.5.6</version><type>jar</type><scope>compile</scope></dependency><!-- Spring在WEB上的MVC框架上加上这个包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>2.5.6</version><type>jar</type><scope>compile</scope></dependency><!-- 数据源、驱动、日志、工具类包 --><!-- log4j日志包 --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.16</version><scope>compile</scope></dependency><!-- jsp接口 --><dependency><groupId>javax.servlet.jsp</groupId><artifactId>jsp-api</artifactId><version>2.1</version><scope>provided</scope></dependency><!-- JDBC连接池 --><dependency><groupId>c3p0</groupId><artifactId>c3p0</artifactId><version>0.9.1.2</version></dependency>        <!-- Oracle数据库JDBC连接包 --><dependency><groupId>private.oracle</groupId><artifactId>ojdbc</artifactId><version>10.2.0.2.0</version><scope>compile</scope></dependency>        <!-- servlet接口 --><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.4</version><scope>provided</scope></dependency></dependencies></project>

    

3、配置web.xml文件初始化工程配置信息，主要包括配置Struts2过滤器和Spring监听和定位applicationContext.xml的物理位置。

<?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"><!-- Sttuts2过滤器 --><filter><filter-name>struts2</filter-name><filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class></filter><filter-mapping><filter-name>struts2</filter-name><url-pattern>/*</url-pattern></filter-mapping><!-- 监听器Spring --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener> <!-- 定位applicationContext.xml的物理位置 --><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:applicationContext.xml</param-value></context-param></web-app>

4、配置applicationContext.xml的文件，指向依赖注入的Spring文件和数据库配置的Spring文件。

<?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"><import resource="applicationContext_bean.xml"/><import resource="applicationContext_db.xml"/></beans>

5、在Oracle中表创建表Photo，包含2个字段：主键ID类型为VARCHAR2(20)，存储照片的字段ZP类型为BLOB。

6、在Model中创建类Photo.java

package model;public class Photo {private String  id;//ID主键private byte[] zp;//照片public String getId() {return id;}public void setId(String id) {this.id = id;}public byte[] getZp() {return zp;}public void setZp(byte[] zp) {this.zp = zp;}}

7、根据Photo.java产生映射文件Photo.hbm.xml文件

<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><!-- Generated 2013-5-3 20:42:59 by Hibernate Tools 3.4.0.CR1 --><hibernate-mapping><class name="model.Photo" table="PHOTO"><id name="id" type="java.lang.String"><column name="ID" /><generator class="assigned" /></id><property name="zp"><column name="ZP" /></property></class></hibernate-mapping>

8、配置applicationContext_db.xml文件以连接Oracle数据库

<?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"><!-- 用Bean定义数据源 --><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"destroy-method="close"><!-- 定义数据库驱动 --><property name="driverClass"><value>oracle.jdbc.driver.OracleDriver</value></property><!-- 定义数据库URL --><property name="jdbcUrl"><value>jdbc:oracle:thin:@localhost:1521:orcl</value></property><!-- 定义数据库的用户名 --><property name="user"><value>lhq</value></property><!-- 定义数据库的密码 --><property name="password"><value>lhq</value></property><property name="minPoolSize"><value>1</value></property><property name="maxPoolSize"><value>40</value></property><property name="maxIdleTime"><value>1800</value></property><property name="acquireIncrement"><value>2</value></property><property name="maxStatements"><value>0</value></property><property name="initialPoolSize"><value>2</value></property><property name="idleConnectionTestPeriod"><value>1800</value></property><property name="acquireRetryAttempts"><value>30</value></property><property name="breakAfterAcquireFailure"><value>true</value></property><property name="testConnectionOnCheckout"><value>false</value></property></bean><!--定义Hibernate的SessionFactory --><bean id="sessionFactory"class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"><!-- 定义SessionFactory必须注入dataSource --><property name="dataSource"><ref bean="dataSource" /></property><!-- 定义Hibernate的SessionFactory属性 --><property name="hibernateProperties"><props><prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop></props></property><!-- 定义POJO的映射文件 --><property name="mappingResources"><list><value>model/Photo.hbm.xml</value>  <!-- Hibernate的映射文件 --></list></property></bean><!-- 配置事务拦截器 --><bean id="transactionManager"class="org.springframework.orm.hibernate3.HibernateTransactionManager"><property name="sessionFactory" ref="sessionFactory" /></bean><tx:advice id="txAdvice" transaction-manager="transactionManager"><tx:attributes><tx:method name="save*" propagation="REQUIRED" /><!-- 接口实现类的方法，命名必须以这些开头才有效 --><tx:method name="find*" propagation="REQUIRED" /><tx:method name="delete*" propagation="REQUIRED" /><tx:method name="update*" propagation="REQUIRED" /><tx:method name="*" propagation="SUPPORTS" read-only="true" /></tx:attributes></tx:advice><aop:config><aop:pointcut id="interceptorPointCuts"expression="execution(* PhotoServiceImpl..*.*(..))" /><!-- 接口实现类的路径 --><aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" /></aop:config></beans>

9、编写接口PhotoService.java

package service;import model.Photo;public interface PhotoService {// 插入照片public void save(Photo photo);//根据ID查询照片public Photo find(String xh);}

10、编写接口的实现类PhotoServiceImpl.java

package serviceimpl;import java.util.List;import org.springframework.orm.hibernate3.support.HibernateDaoSupport;import service.PhotoService;import model.Photo;public class PhotoServiceImpl extends HibernateDaoSupport implements  PhotoService{public void save(Photo photo) {this.getHibernateTemplate().save(photo);//保存照片}public Photo find(String xh) {//根据ID 获取照片信息List list=this.getHibernateTemplate().find("from Photo where id=?",xh);if(list.size()>0)return (Photo) list.get(0);elsereturn null;}}

11、用applicationContext_bean.xml配置实现依赖注入

<?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">    <!-- 业务层Service --><bean id="photoService" class="serviceimpl.PhotoServiceImpl"><property name="sessionFactory"><ref bean="sessionFactory"></ref></property></bean>   <!-- 控制层Action --><bean id="PhotoAction" class="action.PhotoAction"><property name="photoServices"> <ref bean="photoService" /></property></bean></beans>

12、编写控制层PhotoAction.java

package action;import java.io.File;import java.io.FileInputStream;import java.util.List;import java.util.Map;import javax.imageio.stream.FileImageInputStream;import javax.servlet.ServletOutputStream;import javax.servlet.http.HttpServletResponse;import model.Photo;import org.apache.log4j.Logger;import org.apache.struts2.ServletActionContext;import service.PhotoService;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class PhotoAction extends ActionSupport {private Photo photo;private PhotoService photoServices;//接口photoServices依赖注入  photoServices的名称必须和application_bean中名称一致private File zpfile;//文档，存放照片//插入id和照片    public String addPhoto() throws Exception{    Photo stu=new Photo();    stu.setId(photo.getId());//ID主键        System.out.println("照片");    if(this.getZpfile()!=null){//照片处理    FileInputStream fis=new FileInputStream((File) this.getZpfile());    byte[] buffer=new byte[fis.available()];    fis.read(buffer);    stu.setZp(buffer);    }    photoServices.save(stu);//保存信息    return SUCCESS;    }        //根据ID获取照片public String findPhoto() throws Exception {String zp = photo.getId();Photo zhaopian = photoServices.find(zp);Map request = (Map) ActionContext.getContext().get("request");request.put("photo", zhaopian);return SUCCESS;}    //获取图片public String getImage() throws Exception {HttpServletResponse response = ServletActionContext.getResponse();String zp = photo.getId();//获取照片IdPhoto photos = photoServices.find(zp);//根据Id获取照片byte[] img = photos.getZp();//获照片response.setContentType("image/jpeg");ServletOutputStream os = response.getOutputStream();if (img != null && img.length != 0) {//输出照片for (int i = 0; i < img.length; i++) {os.write(img[i]);}os.flush();}return NONE;}public Object getZpfile() {return zpfile;}public void setZpfile(File zpfile) {this.zpfile = zpfile;}   public Photo getPhoto() {return photo;}public void setPhoto(Photo photo) {this.photo = photo;}public PhotoService getPhotoServices() {return photoServices;}public void setPhotoServices(PhotoService photoServices) {this.photoServices = photoServices;}   }

13、编写图片添加页码inputphoto.jsp

<%@page import="java.util.Date"%><%@page import="java.text.SimpleDateFormat"%><%@ page language="java" contentType="text/html; charset=utf-8"pageEncoding="utf-8"%><%@ taglib uri="/struts-tags" prefix="s"%><%String path = request.getContextPath();String basePath = request.getScheme() + "://"+ request.getServerName() + ":" + request.getServerPort()+ path + "/";%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title></title></head><body bgcolor="#d9dfaa">    <hr width="700" align="left"><h3>插入照片</h3><s:form action="addPhoto" method="post" enctype="multipart/form-data"><table border="0" cellpadding="1" cellspacing="0"><tr><td><s:textfield name="photo.id" label="照片ID" value=""></s:textfield></td></tr><tr><td><s:file name="zpfile" label="照片" value=""></s:file></td></tr></table><p><input type="submit" value="添加"> <input type="reset"  value="重置"></s:form>    <hr width="700" align="left"></body></html>

14、编程图片添加成功页码add_success.jsp

<%@page import="java.util.Date"%><%@page import="java.text.SimpleDateFormat"%><%@ page language="java" contentType="text/html; charset=utf-8"    pageEncoding="utf-8"%><%@ taglib uri="/struts-tags" prefix="s" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title></title></head><body bgcolor="#d9dfaa">添加成功</body></html>

15、编写图片查询页码

<%@page import="java.util.Date"%><%@page import="java.text.SimpleDateFormat"%><%@ page language="java" contentType="text/html; charset=utf-8"pageEncoding="utf-8"%><%@ taglib uri="/struts-tags" prefix="s"%><%String path = request.getContextPath();String basePath = request.getScheme() + "://"+ request.getServerName() + ":" + request.getServerPort()+ path + "/";%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title></title></head><body bgcolor="#d9dfaa">    <hr width="700" align="left"><h3>查询图片</h3><s:form action="findPhoto" method="post"><table border="0" cellpadding="1" cellspacing="0"><tr><td><s:textfield name="photo.id" label="照片ID" value=""></s:textfield></td></tr></table><p><input type="submit" value="确定"> <input type="reset" value="重置"></s:form>    <hr width="700" align="left"></body></html>

16、编写图片现实页码out.jsp

<%@page import="java.util.Date"%><%@page import="java.text.SimpleDateFormat"%><%@ page language="java" contentType="text/html; charset=utf-8"pageEncoding="utf-8"%><%@ taglib uri="/struts-tags" prefix="s"%><%String path = request.getContextPath();String basePath = request.getScheme() + "://"+ request.getServerName() + ":" + request.getServerPort()+ path + "/";%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title></title></head><body bgcolor="#d9dfaa"><h3>输出照片：</h3><s:set name="photo" value="#request.photo"></s:set><s:form action="photoInfo.action" method="post"><table border="0" cellpadding="5"><tr><td>照片ID：</td><td width="100"><s:property value="#photo.id" /></td></tr><tr>    <td>照片：</td><td rowspan="6"><imgsrc="getImage.action?photo.id=<s:property value="#photo.id"/>" with="300" height="400"><!-- 根据情况调整照片大小 --></td></tr></table></s:form></body></html>

17、开启工程进行测试，输入网址：http://localhost:8080/photo/inputphoto.jsp可见到如图所示：

18、输入一个没有重复的ID主键，并且选择一张图片

19、打开对应的Oracle数据库表，找到Photo这张表，点击ZP字段

20、打开页面http://localhost:8080/photo/outputphoto.jsp 输入刚才插入的照片ID：123

21、实现功能，到此结束。