lotteryuploadaction.java

学习dwr+struts2+spring进行开发的好例子

package com.szhelper.lotteryWeb.webapp.action;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.struts2.ServletActionContext;

public class LotteryUploadAction extends LotteryWebBaseActionWrap {
	private File upload;// uploaded file object
	private String uploadFileName; // uploaded file name
	private String uploadContentType; // uploaded file type
	private String savePath;

	protected static final int BUFFER_SIZE = 16 * 1024;

	public String upload() {
		System.out.println("upload ...");
		copyToDst();
		return SUCCESS;
	}

	private String getDstPath() {
		String dstPath = ServletActionContext.getServletContext().getRealPath(
				this.getSavePath())
				+ "\\" + this.getUploadFileName();
		return dstPath;
	}

	protected void copyToDst() {
		copyToDst(getDstPath());
	}

	protected void copyToDst(String dst) {
		File dstFile = new File(dst);
		copyToDst(getUpload(), dstFile);
	}

	protected void copyToDst(File dst) {
		copyToDst(getUpload(), dst);
	}

	protected void copyToDst(File src, File dst) {
		if (src == null) {
			System.out.println("ignore upload image");
			return;
		}
		System.out.println("uploading image ...");

		InputStream in = null;
		OutputStream out = null;
		try {
			in = new BufferedInputStream(new FileInputStream(src), BUFFER_SIZE);
			out = new BufferedOutputStream(new FileOutputStream(dst),
					BUFFER_SIZE);
			byte[] buffer = new byte[BUFFER_SIZE];
			int len = 0;
			while ((len = in.read(buffer)) > 0) {
				out.write(buffer, 0, len);
			}
		} catch (Exception e) {
			e.printStackTrace();
			LOG.error(e);
		} finally {
			if (null != in) {
				try {
					in.close();
				} catch (IOException e) {
					e.printStackTrace();
					LOG.error(e);
				}
			}
			if (null != out) {
				try {
					out.close();
				} catch (IOException e) {
					e.printStackTrace();
					LOG.error(e);
				}
			}
		}
	}

	public String getUploadFileName() {
		return uploadFileName;
	}

	public void setUploadFileName(String uploadFileName) {
		this.uploadFileName = uploadFileName;
	}

	public String getUploadContentType() {
		return uploadContentType;
	}

	public void setUploadContentType(String uploadContentType) {
		this.uploadContentType = uploadContentType;
	}

	public String getSavePath() {
		return savePath;
	}

	public void setSavePath(String savePath) {
		this.savePath = savePath;
	}

	public File getUpload() {
		return upload;
	}

	public void setUpload(File upload) {
		this.upload = upload;
	}

}