struts上传

javne

浏览: 67522 次
性别:
来自: 杭州

最近访客更多访客>>

smallswan

kismilan

abun

meibuliesi

博主相关

博客

微博

相册

留言

关于我

文章分类

社区版块

存档分类

博客分类：

struts

Struts JSP HTML Apache

public ActionForward upLoad(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws FileNotFoundException, IOException {
		FileForm fileForm=(FileForm)form;
		List<FileForm.myFile> files=fileForm.getImportFileList();
		
			for(int i =0;i<files.size();i++){
			FileForm.myFile uploadFile = files.get(i);
            FormFile file = uploadFile.getFile();
            
            if(file==null||file.getFileName()==null||"".equals(file.getFileName())){
                System.out.println("file is null");
                continue;//这里判断JSP页面中的input框是否有值
               // return new  ActionForward(request.getHeader("Referer"),true);
            }
            else{
            	 String fileName = file.getFileName();
                 int fileSize = file.getFileSize();
                 byte[] fileDate = file.getFileData();

//下面这句得到服务器上的上传目录+文件名
                 String path=this.getServlet().getServletContext().getRealPath("/")+UPLOAD_FOLDER+fileName;
           
                 UploadUtil.saveFile(path,fileDate,fileSize,File_DEST);//调用uplodautil中的方法上传文件
                 file.destroy();
                       }
        }

		
		return mapping.findForward("success");
	}

formbean:

public class FileForm extends ActionForm {
	/*
	 * Generated fields
	 */
public	class myFile {
		private FormFile file;
	    public FormFile getFile() {
	        return file;
	    }
	    public void setFile(FormFile file) {
	        this.file = file;
	    }
	}

	public static final String ERROR_PROPERTY_MAX_LENGTH_EXCEEDED = "org.apache.struts.webapp.upload.MaxLengthExceeded";
	protected List<myFile> importFile;
	public FileForm()
	{
		importFile=new ArrayList<myFile>();
		importFile.add(0,new myFile());//初始化页面只有一个input
		
	}
	/*
	 * Generated Methods
	 */

	/**
	 * Method validate
	 * 
	 * @param mapping
	 * @param request
	 * @return ActionErrors
	 */
	public ActionErrors validate(ActionMapping mapping,
			HttpServletRequest request) {
		ActionErrors errors=new ActionErrors();
	     Boolean maxLengthExceeded = (Boolean) request.getAttribute(
                 MultipartRequestHandler.ATTRIBUTE_MAX_LENGTH_EXCEEDED);

if ((maxLengthExceeded != null) && (maxLengthExceeded.booleanValue()))

{
 errors.add("文件", new ActionMessage("too big"));
}
return errors;

/*if (null == importFile.getFileName() || "".equals(theFile.getFileName())) {   

	errors.add("theFileError", new ActionMessage("errors.upload.file"));  

	}*/ 

	

	}

	/**
	 * Method reset
	 * 
	 * @param mapping
	 * @param request
	 */
	public void reset(ActionMapping mapping, HttpServletRequest request) {
		// TODO Auto-generated method stub
	}

	public List<myFile> getImportFileList() {
		return importFile;
	}

	public void setImportFileList(List<myFile> importFile) {
		this.importFile = importFile;
	}

	public myFile getImportFile(int index) {
			int size = importFile.size(); 
			if (index > size-1) { 
			for (int i=0;i<index-size+1;i++){ 
				importFile.add(new myFile()); 
			} 
			} 
			return importFile.get(index); 
	}

	public void setImportFile(int index,FormFile file) {
		 myFile element= new myFile();
		 element.setFile(file);
		this.importFile .add(index, element);
	}





}

JSP页面:

 <body>

        <html:form action="/file.do?method=upLoad"  method="post" enctype="multipart/form-data">
	
           
            <%--<logic:iterate id="importFile" name="fileForm" property="importFileList" indexId="index">
            <html:file property="file" name="importFile" indexed="true"/><html:errors property="theFile"/><br/>
            </logic:iterate>--%>
            <input type="file" name="importFile[0].file"/><br>
            <input type="file" name="importFile[1].file"/><br>
            <input type="file" name="importFile[2].file"/><br>
            <input type="file" name="importFile[3].file"/><br>
            <input type="file" name="importFile[4].file"/><br>
            <input type="file" name="importFile[5].file"/><br>

    
  
            <html:submit/><html:cancel/>

            

        </html:form>

    </body>

uploadUtil 类:

package com.yourcompany.struts.action;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class UploadUtil {
	private static final String DATABASE_DEST = "database";

	private static final String FILE_DEST = "file";

	private static final int MAX_SIZE = 1024 * 1024;

	private static final String[] TYPES = { ".jpg", ".gif", ".zip", ".rar" };

	public static void saveFile(String fileName, byte[] fileData, int size,
	String dest) throws FileNotFoundException, IOException {

		if (!checkSize(size)) {
			throw new IOException(size + " is too large !");
		}

		if (!checkType(fileName)) {
			throw new IOException("Unvaildate type !");
		}

		if (dest.equals(DATABASE_DEST)) {
			saveToDb(fileName, fileData);
		}

		if (dest.equals(FILE_DEST)) {
			saveToFile(fileName, fileData);
		}

	}

	private static void saveToDb(String fileName, byte[] fileData) {

	}

	private static void saveToFile(String fileName, byte[] fileData)
	throws FileNotFoundException, IOException {
		OutputStream o = new FileOutputStream(fileName);
		o.write(fileData);
		o.close();
	}

	public static void delFile(String fileName, String dest)
	throws NullPointerException, SecurityException {
		if (dest.equals(DATABASE_DEST)) {
			delFromDb(fileName);
		}

		if (dest.equals(FILE_DEST)) {
			delFromFile(fileName);
		}

	}

	private static void delFromDb(String fileName) {

	}

	private static void delFromFile(String fileName)
	throws NullPointerException, SecurityException {

		File file = new File(fileName);
		if (file.exists())
			file.delete();
	}

	private static boolean checkSize(int size) {
		if (size > MAX_SIZE)
			return false;
		return true;

	}

	private static boolean checkType(String fileName) {
		for (int i = 0; i < TYPES.length; i++) {
			if (fileName.toLowerCase().endsWith(TYPES[i])) {
				return true;
			}

		}
		return false;

	}

}

分享到：