//产生一个唯一的名字
this.setFileName(String.valueOf(System.currentTimeMillis()));
String path = ServletActionContext.getServletContext().getRealPath("/template/WordExportTemplate");
//工程下的完整路径名
String filepath = path +"\\" + fileName + ".doc";//写入文件
Writer  out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(filePath,true), "utf-8"), 10240);
out.write("   ");

public InputStream getInputStream() throws Exception {create();String path = ServletActionContext.getServletContext().getRealPath("/template/WordExportTemplate");String filepath = path +"\\" + fileName + ".doc";//完整的路径名File file = new File(filepath);//只用返回一个输入流return FileUtils.openInputStream(file);}

public String execute() throws Exception{ServletContext servletContext = ServletActionContext.getServletContext();
//        fileNameFileName表示文件上传时候的名字，也可以自己用UUID定义一个新的名字String dir = servletContext.getRealPath("/template/ExcelImportTemplate/"+fileNameFileName);System.out.println(dir);
//        文件输出流，写到dir指定的目录与名字FileOutputStream outputStream = new FileOutputStream(dir);
//        打开上传的文件的输入流FileInputStream inputStream = new FileInputStream(fileName);byte[] buffer = new byte[1024];int len = 0;
//        从此输入流中将最多 b.length 个字节的数据读入一个 byte 数组中.读入缓冲区的字节总数，如果因为已经到达文件末尾而没有更多的数据，则返回 -1。while((len = inputStream.read(buffer))!=-1){
//            将指定 byte 数组中从偏移量 off 开始的 len 个字节写入此文件输出流。outputStream.write(buffer, 0, len);}inputStream.close();outputStream.close();return SUCCESS;}

ServletContext servletContext = ServletActionContext.getServletContext();//        fileNameFileName表示文件上传时候的名字，也可以自己用UUID定义一个新的名字String dir = servletContext.getRealPath("/template/ExcelImportTemplate/"+fileNameFileName);File file = new File(dir);FileInputStream openInputStream = FileUtils.openInputStream(file);HSSFWorkbook workbook = new HSSFWorkbook(openInputStream);

public InputStream getInputStream() throws Exception {create();String path = ServletActionContext.getServletContext().getRealPath("/template/ExcelExportTemplate");String filepath = path +"\\" + fileName + ".xls";File file = new File(filepath);//只用返回一个输入流return FileUtils.openInputStream(file);}

String path = ServletActionContext.getServletContext().getRealPath("/template");File tempFile = new File(path, templateName + ".xls");
tempFile.delete();
tempFile.createNewFile();
FileOutputStream stream = FileUtils.openOutputStream(tempFile);

1 ServletContext servletContext = ServletActionContext.getServletContext();
2 // fileNameFileName表示文件上传时候的名字，也可以自己用UUID定义一个新的名字
3  String dir = servletContext.getRealPath("/template/ExcelImportTemplate/"+fileName);
4 FileOutputStream outputStream = new FileOutputStream(dir);