文件上传

1、单文件上传
private File file; //与表单中的name属性一致
private String file[color=red]FileName[/color]; //表单中的name属性+FileName

String realPath = ServletActionContext.getServletContext ().getRealPath("/image");
File file1 = new File(new File(realPath),fileFileName);
if(!file1.getParentFile().exists()){
file1.getParentFile().mkdirs();
try {
[color=red]FileUtils.copyFile(file, file1);[/color] } catch (IOException e) {
e.printStackTrace();
}
}

2、多文件上传(单文件循环上传)

package action;
import java.io.File;
import java.io.IOException;
import javax.servlet.ServletContext;
import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;
public class FileAction {
	public String execute(){
	     ServletContext sc = ServletActionContext.getServletContext();
	     String realPath = sc.getRealPath("/image");
         File realFile = new File(realPath); 
         if(!realFile.exists())
        	 realFile.mkdir();
         int i = 0 ;
         for(File file1 : file){
            try {
				FileUtils.copyFile(file1, new File(realFile,fileFileName[i]));
			} catch (IOException e) {
				e.printStackTrace();
			}
            i++;
         }
		 return "success";	
	}
	private File[] file;
	private String[] fileFileName;
	public File[] getFile() {
		return file;
	}
	public void setFile(File[] file) {
		this.file = file;
	}
	public String[] getFileFileName() {
		return fileFileName;
	}
	public void setFileFileName(String[] fileFileName) {
		this.fileFileName = fileFileName;
	}

}