struts2_单文件上传

package action; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.util.Date; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class FileUploadAction extends ActionSupport { private static final long serialVersionUID = 572146812454l; private static final int BUFFER_SIZE = 16 * 1024; private File myFile; private String contentType; private String fileName; private String imageFileName; private String caption; public void setMyFileContentType(String contentType) { this .contentType = contentType; } public void setMyFileFileName(String fileName) { this .fileName = fileName; } public void setMyFile(File myFile) { this .myFile = myFile; } public String getImageFileName() { return imageFileName; } public String getCaption() { return caption; } public void setCaption(String caption) { this .caption = caption; } public static void copy(File src, File dst) { try { 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]; while (in.read(buffer) > 0) { out.write(buffer); } } catch (Exception e) { e.printStackTrace(); } finally { if(null != in) { in.close(); } if(null != out) { out.close(); } } } catch (Exception e) { e.printStackTrace(); } } public static String getExtention(String fileName) { int pos = fileName.lastIndexOf("."); return fileName.substring(pos); } public String execute() throws Exception { imageFileName = new Date().getTime() + getExtention(fileName); File imageFile = new File(ServletActionContext.getServletContext().getRealPath("/UploadImages") + "/" + imageFileName); copy(myFile, imageFile); return SUCCESS; } }