如何在数据库中存储图像路径？

Question

你好，我正在制作员工目录。在这种形式下，我想上传员工的照片，当我试图存储图像时，我遇到了错误，比如Portlet暂时不可用，如果我成功删除图像上传逻辑，然后在数据库中删除其他数据存储。请帮助我如何在数据库中存储图像路径。我已在/webapps中创建图像文件夹。我想将我的所有图像存储在此文件夹中，并将图像路径存储到数据库中。请告诉我如何存储图像路径，以及存储图像路径后如何在其他页面中显示图像。

在这里，我给你我的java代码，我已经写了我的逻辑。包裹通讯。迪尔；

import java.io.File;
import java.io.IOException;
import java.util.Date;
import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletException;
import com.liferay.portal.kernel.exception.SystemException;
import com.dir.model.directory;
import com.dir.model.impl.directoryImpl;
import com.dir.service.directoryLocalServiceUtil;
import com.liferay.counter.service.CounterLocalServiceUtil;
import com.liferay.portal.kernel.upload.UploadPortletRequest;
import com.liferay.portal.kernel.util.FileUtil;
import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.portal.util.PortalUtil;
import com.liferay.util.bridges.mvc.MVCPortlet;


  public class Directory extends MVCPortlet {

public void updatedir(ActionRequest actionRequest,ActionResponse  
 actionResponse)throws IOException, PortletException
        {
String empname =ParamUtil.getString(actionRequest,"empname");
    String designation =ParamUtil.getString(actionRequest,"designation");
String qualification =ParamUtil.getString(actionRequest,"qualification");
    String email =ParamUtil.getString(actionRequest,"email");
String photo=ParamUtil.getString(actionRequest,"photo");
String company =ParamUtil.getString(actionRequest,"company");
int experiance=ParamUtil.getInteger(actionRequest,"experiance");

directory d1 = new directoryImpl();

// set primary key
long directoryId=0L;
try
{

     directoryId=CounterLocalServiceUtil.increment(this.getClass().getName());
} 
catch (SystemException ex)
{
    ex.printStackTrace();
}
   d1.setDirectoryId(directoryId);

        // set UI fields
        d1.setEmpname(empname);
        d1.setDesignation(designation);
        d1.setQualification(qualification);
        d1.setEmail(email);
        d1.setPhoto(photo);
        d1.setCompany(company);
        d1.setExperiance(experiance);

    File file;

        UploadPortletRequestupreq=PortalUtil.getUploadPortletRequest(actionRequest);
    file=upreq.getFile(photo);

    Stringpath=actionRequest.getPortletSession().getPortletContext().getRealPath(photo) 
     + "//" + ("/images");

        File fileone= new File(path);
        FileUtil.copyDirectory(file,fileone);

        // set audit field(s)
        d1.setDateAdded(new Date());

        // insert the book using persistence api
        try {

        directoryLocalServiceUtil.adddirectory(d1);
        } catch (SystemException e) {
        e.printStackTrace();
        }


        }


      }

这里我给你我上传照片的Jsp文件。

   <aui:form name="fm" method="POST" action="<%= updatedirURL.toString() %>"   
    enctype="multipart/form-data">

  <aui:input name="empname" label="Name"/>

 <aui:input name="designation" label="Designation"/>
 <aui:input name="qualification" label="Qualification"/>

 <aui:input name="email" label="Email"/>

 <aui:input type="file" label="Photo" name="photo"/>

 <aui:input name="company" label="Company"/>

 <aui:input name="experiance" label="Experiance"/>

 <aui:button type="submit" value="Save"/>
 </aui:form>

请帮助我哪里错了，哪里缺了它需要的东西。并告诉我如何显示该文件夹中的数据。

Answer 1

查看关于使用mysql读/写文件（文件可能是任何类型）的这篇文章，Tt将对您有很大帮助<欢呼。。。