使用的是將圖片保存到服務(wù)器，并記錄路徑名的方式，代碼如下：
struts部分：
<form-bean name="upfileForm" type="org.apache.struts.validator.DynaValidatorForm">
<form-property name="filename" type="java.lang.String" />
<form-property name="filedata" type="org.apache.struts.upload.FormFile" />
</form-bean>
<action
attribute="upfileForm"
input="/upload/uploadfile.jsp"
name="upfileForm"
path="/upfile"
scope="request"
validate="true"
type="com.yourcompany.struts.action.UpfileAction">
<forward name="ok" path="/upload/ok.jsp" />
</action>
<action path="/displayimg" type="com.yourcompany.struts.action.DisplayimgAction">
<forward name="ok" path="/upload/displayimg.jsp" />
</action>
public class UpfileAction extends Action {
/*
* Generated Methods
*/
/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
DynaActionForm upfileForm = (DynaActionForm) form;// TODO Auto-generated method stub
Image image = new Image();
String strimgname = upfileForm.getString("filename");
image.setImgname(strimgname);
imageDAO.save(image);
FormFile filedata = (FormFile)upfileForm.get("filedata");
ServletContext servletContext = this.getServlet().getServletContext();
String filePath = servletContext.getRealPath("/");
try {
InputStream stream = filedata.getInputStream();
OutputStream bos = new FileOutputStream(filePath + "/image/" + filedata.getFileName());
int bytesRead = 0;
byte[] buffer = new byte[8192];
while ( (bytesRead = stream.read(buffer, 0, 8192)) != -1) {
bos.write(buffer, 0, bytesRead);
}
bos.close();
stream.close();
}catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return mapping.findForward("ok");
}
private ImageDAO imageDAO;
public void setImageDAO(ImageDAO dao){
this.imageDAO = dao;
}
}
public class DisplayimgAction extends Action {
/*
* Generated Methods
*/
/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
// TODO Auto-generated method stub
List results = imageDAO.findAll();
if(results!=null){
HttpSession session=request.getSession();
session.setAttribute("results",results);
return mapping.findForward("ok");
}return mapping.findForward("fail");
}
private ImageDAO imageDAO;
public void setImageDAO(ImageDAO dao){
this.imageDAO = dao;
}
}
ImageDAO.java
public void save(Image transientInstance) {
Session session =this.getSession();
Transaction tx = null;
tx = session.beginTransaction();
session.save(transientInstance);
tx.commit();
session.evict(transientInstance);
}
public List findAll() {
Session session =this.getSession();
Query query = session.createQuery("from Image");
return query.list();
}
displayimg.jsp
<logic:iterate id="element" name="results">
<tr>
<td width="100"><bean:write name="element" property="id"/> </td>
<td width="100"><img src="image/<bean:write name='element' property='imgname'/>"/></td>
</tr>
</logic:iterate>
uploadfile.jsp
<html:form action="/upfile" enctype = "multipart/form-data">
filename : <html:text property="filename"/><html:errors property="filename"/><br/>
filedata : <html:file property="filedata"/><html:errors property="filedata"/><br/>
<html:submit/><html:cancel/>
</html:form>
<!-- u-f8 filter -->
<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>*.do</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>