Struts+Spring+Hibernate实现上传下载（MyEclipse版）

在天极网看了一篇用JBuilder实现的“Struts+Spring+Hibernate实现上传下载”文章，觉得还不错。今天有空我用MyEclipse工具把它重新实现了一边，并增加了一些功能。

原文档链接：
http://soft.yesky.com/352/2243352.shtml

所用软件或包的版本：
Struts 1.2
Spring 1.2.8
Hibernate 3.1
Oracle 9i
MyEclipse4.1.1

具体代码如下：
TFile类：
package sshfile.model;

import java.sql.Blob;
/**
* TFile generated by MyEclipse - Hibernate Tools
*/
public class TFile  implements java.io.Serializable {

    // Fields   
     private String fileId;
     private String fileName;
     private byte[] fileContent;
     private String remark;

    // Constructors
    /** default constructor */
    public TFile() {}

   
    /** full constructor */
    public TFile(String fileName, byte[] fileContent, String remark) {
        this.fileName = fileName;
        this.fileContent = fileContent;
        this.remark = remark;
    }
 
    // Property accessors

    public String getFileId() {
        return this.fileId;
    }
   
    public void setFileId(String fileId) {
        this.fileId = fileId;
    }

    public String getFileName() {
        return this.fileName;
    }
   
    public void setFileName(String fileName) {
        this.fileName = fileName;
    }

    public byte[] getFileContent() {
        return this.fileContent;
    }
   
    public void setFileContent(byte[] fileContent) {
        this.fileContent = fileContent;
    }

    public String getRemark() {
        return this.remark;
    }
   
    public void setRemark(String remark) {
        this.remark = remark;
    }
  
}

TFile.hbm.xml代码：
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
    Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
<hibernate-mapping>
    <class name="sshfile.model.TFile" table="T_FILE" >
        <id name="fileId" type="string">
            <column name="FILE_ID" length="32" />
            <generator class="uuid.hex"></generator>
        </id>
        <property name="fileName" type="string">
            <column name="FILE_NAME" length="100" />
        </property>
        <property name="fileContent" type="org.springframework.orm.hibernate3.support.BlobByteArrayType" lazy="true">
            <column name="FILE_CONTENT" />
        </property>
        <property name="remark" type="string">
            <column name="REMARK" length="400" />
        </property>
    </class>
</hibernate-mapping>

TFileDAO接口代码：
package sshfile.dao;

import java.util.List;
import sshfile.model.TFile;
/**
* DAO 接口
* @author tony.lee
*
*/
public interface TFileDAO {
public void save(TFile tfile);
public void delete(TFile tfile);
public TFile findByFildId(String fileId);
public List findAll();
public int getFilesCount();
public int getCountByQuery();
}

TFileDAO接口实现类代码：
package sshfile.dao;


import sshfile.model.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import java.util.List;

/**
* DAO 实现类
*
* @author tony.lee
*
*/
public class TfileDAOHibernate extends HibernateDaoSupport implements TFileDAO {

private static final Log log = LogFactory.getLog(TfileDAOHibernate.class);

public void save(TFile tfile) {
log.debug("saving TFile instance:");
try {
getHibernateTemplate().saveOrUpdate(tfile);
// getHibernateTemplate().save(tfile);
getHibernateTemplate().flush();
log.debug("save successful");
} catch (RuntimeException re) {
log.error("save failed", re);
throw re;
}
}

public void delete(TFile tfile) {
log.debug("deleting TFile instance:");
try {
getHibernateTemplate().delete(tfile);
log.debug("delete successful");
} catch (RuntimeException re) {
log.error("delete failed", re);
throw re;
}
}

public TFile findByFildId(String fileId) {
log.debug("getting TFile instance with id: " + fileId);
try {
return (TFile) getHibernateTemplate().get(TFile.class, fileId);
} catch (RuntimeException re) {
log.error("get failed", re);
throw re;
}
}

public List findAll() {
log.debug("finding all file:");
try {
// return (List)getHibernateTemplate().loadAll(TFile.class);
return (List) getHibernateTemplate().find("from TFile");
} catch (RuntimeException re) {
log.error("get failed", re);
throw re;
}
}

/**
* 取记录总数(1)
* @return int
*/
public int getFilesCount() {
log.debug("getting file count:");
int count = 0;
//注意：此TFile为对象不是表。
String queryString = "select count(*) from TFile";
try {
count = ((Integer) getHibernateTemplate().iterate(queryString).next()).intValue();
return count;
} catch (RuntimeException re) {
log.error("get failed", re);
throw re;
}
}
//取记录总数(2)
public int getCountByQuery() {  
Integer count = (Integer) getHibernateTemplate().execute(new HibernateCallback(){  
            public Object doInHibernate(Session session) throws HibernateException {  
            String queryString = "select count(*) from TFile";
            Query query = session.createQuery(queryString);
            return ((Integer)query.iterate().next()).intValue();
            }  
        }, true);  
        return count.intValue();  
    }  

}

FileService接口代码：
package sshfile.service;

import java.io.OutputStream;
import java.util.List;
import sshfile.web.form.FileActionForm;
/**
* Service 接口
* @author tony.lee
*
*/
public interface FileService {
// 将提交的上传文件保存到数据表中
void save(FileActionForm fileForm);
// 得到T_FILE所示记录
List getAllFile();
// 将某个文件的文件数据写出到输出流中
void write(OutputStream os,String fileId);
// 获取文件名
String getFileName(String fileId);
// 用于删除文件
public void delete(String fileId);
public int getFilesCount();
}

FileService接口实现类代码：
package sshfile.service;


import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
import sshfile.dao.TFileDAO;
import sshfile.model.TFile;
import sshfile.web.form.FileActionForm;
/**
* Service 实现类
* @author tony.lee
*
*/
public class FileServiceImpl implements FileService {

private TFileDAO fileDAO;

public FileServiceImpl() {
}

//用于将上传的文件信息保存到数据库
public void save(FileActionForm fileForm) {
//将FileActionForm对象中的数据倒入到Tfile对象中
TFile tFile = new TFile();
try {
tFile.setFileContent(fileForm.getFileContent().getFileData());
} catch (FileNotFoundException ex) {
throw new RuntimeException(ex);
} catch (IOException ex) {
throw new RuntimeException(ex);
}
tFile.setFileName(fileForm.getFileContent().getFileName());
tFile.setRemark(fileForm.getRemark());
//调用TfileDAO保存数据。
fileDAO.save(tFile);
}
//用于下载指定文件
public void write(OutputStream os, String fileId) {
TFile tfile = fileDAO.findByFildId(fileId);
try {
os.write(tfile.getFileContent());
os.flush();
} catch (IOException ex) {
throw new RuntimeException(ex);
}
}
//用于删除指定文件
public void delete(String fileId) {
TFile tfile = fileDAO.findByFildId(fileId);
try {
fileDAO.delete(tfile);
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}

// 得到指定文件的名称（包括扩展名）
public String getFileName(String fileId) {
TFile tfile = fileDAO.findByFildId(fileId);
return tfile.getFileName();
}
// 得到所有文件列表
public List getAllFile() {
return fileDAO.findAll();
}
//得到所有文件数量
public int getFilesCount(){
//return fileDAO.getFilesCount();
return fileDAO.getCountByQuery();
}
//----------------------------------------------------------------------------
public TFileDAO getFileDAO() {
return fileDAO;
}
// 依赖注入fileDAO BEAN
public void setFileDAO(TFileDAO fileDAO) {
this.fileDAO = fileDAO;
}

}

FileAction类代码：
//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.1.1/xslt/JavaClass.xsl
package sshfile.web.action;


import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import org.apache.struts.util.ModuleException;
import sshfile.service.FileService;
import sshfile.web.form.FileActionForm;
/**
* MyEclipse Struts Creation date: 01-17-2007
*
* XDoclet definition:
*
* @struts.action path="/fileAction" name="fileActionForm" parameter="method" scope="request" validate="true"
* @struts.action-forward name="forward" path="/fileAction.do?method=listAllFile"
* @struts.action-forward name="fileList" path="/file-list.jsp"
*/
public class FileAction extends DispatchAction {

// --------------------------------------------------------- Instance Variables
private FileService fileService;
// --------------------------------------------------------- Methods
// 将上传文件保存到数据库中
public ActionForward upload(ActionMapping mapping, ActionForm form, HttpServletRequest request,
HttpServletResponse response) {
FileActionForm fileForm = (FileActionForm) form;
fileService.save(fileForm);
return mapping.findForward("forward");
}
// 列出所有文件
public ActionForward listAllFile(ActionMapping mapping, ActionForm form, HttpServletRequest request,
HttpServletResponse response) throws ModuleException {
//int count = fileService.getFilesCount();
//System.out.println(count);
List fileList = fileService.getAllFile();
request.setAttribute("fileList", fileList);
return mapping.findForward("fileList");
}
// 下载指定文件
public ActionForward download(ActionMapping mapping, ActionForm form, HttpServletRequest request,
HttpServletResponse response) throws ModuleException {
FileActionForm fileForm = (FileActionForm) form;
String fileName = fileService.getFileName(fileForm.getFileId());
try {
response.setContentType("application/x-msdownload");
response.setHeader("Content-Disposition", "attachment;" + "filename="
+ new String(fileName.getBytes(), "UTF-8"));
fileService.write(response.getOutputStream(), fileForm.getFileId());
} catch (Exception e) {
throw new ModuleException(e.getMessage());
}
return null;
}
// 删除指定文件
public ActionForward deleteFile(ActionMapping mapping, ActionForm form, HttpServletRequest request,
HttpServletResponse response) throws ModuleException {
FileActionForm fileForm = (FileActionForm) form;
fileService.delete(fileForm.getFileId());
List fileList = fileService.getAllFile();
request.setAttribute("fileList", fileList);
return mapping.findForward("fileList");
}
//----------------------------------------------------------------------------------
public FileService getFileService() {
return fileService;
}
//依赖注入fileService BEAN
public void setFileService(FileService fileService) {
this.fileService = fileService;
}

}

FileActionForm类代码：
//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.1.1/xslt/JavaClass.xsl

package sshfile.web.form;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.upload.FormFile;
/**
* MyEclipse Struts
* Creation date: 01-17-2007
*
* XDoclet definition:
* @struts.form name="fileActionForm"
*/
public class FileActionForm extends ActionForm {

// --------------------------------------------------------- Instance Variables

/** remark property */
private String remark;

/** fileContent property */
private FormFile fileContent;

/** fileId property */
private String fileId;

// --------------------------------------------------------- Methods

/**
* Method validate
* @param mapping
* @param request
* @return ActionErrors
*/
public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) {

// TODO Auto-generated method stub
return null;
}

/**
* Method reset
* @param mapping
* @param request
*/
public void reset(ActionMapping mapping, HttpServletRequest request) {

// TODO Auto-generated method stub
}

/**
* Returns the remark.
* @return String
*/
public String getRemark() {
return remark;
}

/**
* Set the remark.
* @param remark The remark to set
*/
public void setRemark(String remark) {
this.remark = remark;
}

/**
* Returns the fileContent.
* @return String
*/
public FormFile getFileContent() {
return fileContent;
}

/**
* Set the fileContent.
* @param fileContent The fileContent to set
*/
public void setFileContent(FormFile fileContent) {
this.fileContent = fileContent;
}

/**
* Returns the fileId.
* @return String
*/
public String getFileId() {
return fileId;
}

/**
* Set the fileId.
* @param fileId The fileId to set
*/
public void setFileId(String fileId) {
this.fileId = fileId;
}

}

file-upload.jsp代码：
<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<html>
<head>
<title>
file-update
</title>
</head>
<body bgcolor="#ffffff">
  <html:form action="/fileAction.do?method=upload" method="post" enctype="multipart/form-data">
<table width="100%" border="0">
  <tr>
<td align="right">请选择上传的文件：</td>
<td><html:file property="fileContent"/></td>
  </tr>
  <tr>
<td align="right">文件注释：</td>
<td><html:textarea cols="30" property="remark"/></td>
  </tr>
  <tr>
<td colspan="2" align="center"><html:submit value="提交"/></td>
  </tr>
</table>
</html:form>

</body>
</html>

file-list.jsp代码：
<%@page contentType="text/html; charset=UTF-8"%>
<%@taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>
<%@taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>
<html>
<head>
<title>file-download</title>
</head>
<body bgcolor="#ffffff">
<ol>
  <logic:iterate id="item" name="fileList" scope="request">
    <li>
    <a href='fileAction.do?method=download&fileId=<bean:write name="item" property="fileId"/>'>
    <bean:write name="item" property="fileName"/></a>
         
    <a href='fileAction.do?method=deleteFile&fileId=<bean:write name="item" property="fileId"/>'>
    delete</a> 
    </li>
  </logic:iterate>
</ol>
<a href='file-upload.jsp'>返回到上传页面</a>
</body>
</html>

//////下面是配置文件：
init.properties代码：
datasource.driverClassName=oracle.jdbc.driver.OracleDriver
datasource.url=jdbc:oracle:thin:@localhost:1521:oracle92
datasource.username=scott
datasource.password=tiger
datasource.maxActive=50
datasource.maxIdle=2
datasource.maxWait=120000
datasource.defaultAutoCommit=true
datasource.whenExhaustedAction=1
datasource.validationQuery=select 1 from dual
datasource.testOnBorrow=true
datasource.testOnReturn=false

hibernate.dialect=org.hibernate.dialect.Oracle9Dialect
hibernate.cglib.use_reflection_optimizer=true
hibernate.jdbc.batch_size=25
hibernate.jdbc.fetch_size=50
hibernate.show_sql=true
hibernate.hbm2ddl.auto=create-drop


log4j.properties代码：
log4j.rootCategory=INFO, stdout,logfile
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - <%m>%n
log4j.appender.logfile=org.apache.log4j.DailyRollingFileAppender
log4j.appender.logfile.File=${webapp.root}/WEB-INF/logs/SSHFile.log
log4j.appender.AAA.DatePattern=.yyyy-MM-dd
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - <%m>%n


web.xml代码：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<!--默认读取applicationContext.xml，也可以读取多个自定义的配置文件，用逗号隔开 -->
<!--
<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml,/WEB-INF/actionContext.xml</param-value>
    </context-param>
    -->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/log4j.properties</param-value>
</context-param>
<context-param>
        <param-name>log4jRefreshInterval</param-name>
        <param-value>60000</param-value>
    </context-param>
    <!--
<listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    -->
    <listener>
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener>
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>

<filter>
<filter-name>encodingFilter</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>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--
<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
-->
<!--使用struts控制view层 -->
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>3</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>3</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

</web-app>


struts-config.xml代码：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>
  <data-sources />
  <form-beans >
    <form-bean name="fileActionForm" type="sshfile.web.form.FileActionForm" />

  </form-beans>

  <global-exceptions />
  <global-forwards />
  <action-mappings >
    <action
      attribute="fileActionForm" name="fileActionForm"
      parameter="method"
      path="/fileAction"
      scope="request"
      type="org.springframework.web.struts.DelegatingActionProxy">
      <forward name="forward" path="/fileAction.do?method=listAllFile" />
      <forward name="fileList" path="/file-list.jsp" />
    </action>

  </action-mappings>
  <message-resources parameter="sshfile.web.ApplicationResources" />
  <plug-in className="org.springframework.web.struts.ContextLoaderPlugIn">
    <set-property property="contextConfigLocation" value="/WEB-INF/applicationContext.xml,/WEB-INF/actionContext.xml" />
  </plug-in>
</struts-config>

applicationContext.xml代码：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans>
<!-- 初始化文件导入配置 //-->
<bean id="placeholderConfig" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
<value>/WEB-INF/init.properties</value>
</property>
</bean>
<!-- dataSource配置 //-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName">
<value>${datasource.driverClassName}</value>
</property>
<property name="url">
<value>${datasource.url}</value>
</property>
<property name="username">
<value>${datasource.username}</value>
</property>
<property name="password">
<value>${datasource.password}</value>
</property>
<property name="maxActive">
<value>${datasource.maxActive}</value>
</property>
<property name="maxIdle">
<value>${datasource.maxIdle}</value>
</property>
<property name="maxWait">
<value>${datasource.maxWait}</value>
</property>
<property name="defaultAutoCommit">
<value>${datasource.defaultAutoCommit}</value>
</property>
</bean>
<!-- Lob字段的处理句柄配置 //-->
<bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.CommonsDbcpNativeJdbcExtractor" lazy-init="true" />
<bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler" lazy-init="true">
<property name="nativeJdbcExtractor">
<ref local="nativeJdbcExtractor" />
</property>
</bean>
<!-- sessionFactory配置 //-->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<!-- 为处理Blob类型字段的句柄声明 //-->
<property name="lobHandler" ref="lobHandler" />
<!-- hibernate一些额外配置 //-->
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.cglib.use_reflection_optimizer">${hibernate.cglib.use_reflection_optimizer}</prop>
<prop key="show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.jdbc.fetch_size">${hibernate.jdbc.fetch_size}</prop>
<prop key="hibernate.jdbc.batch_size">${hibernate.jdbc.batch_size}</prop>
</props>
</property>
<!-- hibernate映射配置 //-->
<property name="mappingResources">
<list>
<value>sshfile/model/TFile.hbm.xml</value>
</list>
</property>
<!-- 也可以这么用
<property name="mappingDirectoryLocations">
<list>
<value>classpath:/sshfile/model</value>
</list>
</property>
//-->
</bean>
<!--定义事务bean-->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref local="sessionFactory" />
</property>
</bean>

<!--定义事务拦截器bean -->
<bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">
<!--事务拦截器bean需要依赖注入一个事务管理器-->
<property name="transactionManager" ref="transactionManager" />
<property name="transactionAttributes">
<!--下面定义事务传播属性-->
<props>
<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="save">PROPAGATION_REQUIRED</prop>
<prop key="write">PROPAGATION_REQUIRED,readOnly</prop>
</props>
</property>
</bean>
<!-- 定义BeanNameAutoProxyCreator-->
<bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
<!--  指定对满足哪些bean name的bean自动生成业务代理 -->
<property name="beanNames">
<!--  下面是所有需要自动创建事务代理的bean-->
<list>
<value>fileService</value>
<!--此处可增加其他需要自动创建事务代理的bean-->
</list>
</property>
<!--下面定义BeanNameAutoProxyCreator所需的事务拦截器-->
<property name="interceptorNames">
<list>
<value>transactionInterceptor</value>
<!-- 此处可增加其他新的Interceptor -->
</list>
</property>
</bean>
<!-- DAO bean//-->
<bean id="fileDAO" class="sshfile.dao.TfileDAOHibernate">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>
<!-- service bean//-->
<bean id="fileService" class="sshfile.service.FileServiceImpl">
<property name="fileDAO">
<ref bean="fileDAO" />
</property>
</bean>

</beans>


actionContext.xml代码：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans>
<bean name="/fileAction" class="sshfile.web.action.FileAction" singleton="false">
<property name="fileService">
<ref bean="fileService" />
</property>
</bean>

</beans>

但是发现了一个问题：就是当上传了很多文档后，再上传文档还是可以的，但是从数据库读出来显示到页面上时会出现“内存溢出”的错误。有谁碰到过这个问题吗？若有，请问有什么好的高效的解决方案吗？

以上是所有代码的实现，若有什么不当之处请不吝赐教。。。