struts2文件上传

接上篇博客，已经实现读取Excel到数据库，但是我忽略了那时服务器端本地操作，应该需要用户上传Excel表的，这篇写下struts2的上传操作用到commons-fileupload-1.2.jar和commons-io-1.3.jar可以到网上下载，struts.xml省略了就 只要action类正确就行。

下面试jsp表单：

<form action="XXXXX.action" method="POST" enctype="multipart/form-data">     

        选择文件：<input type="file"name="upload" size="30"/><br/>

       <input type="submit"value=" 上传 "/>      

</form>

其中"multipart/form-data"很重要表明是以二进制流数据传送

下面试action类的方法：

private static final int BUFFER_SIZE = 16 * 1024;

    // 上传文件域对象

    private File upload;

    // 上传文件名   在操作类中需要此文件名找到需要导入数据库德Excel，因此需要对本类以来注入

    public String uploadFileName;

    // 上传文件类型

    private String uploadContentType;

   

    public File getUpload() {

       return upload;

    }

    public void setUpload(File upload) {

       this.upload = upload;

    }

    public String getUploadContentType() {

       return uploadContentType;

    }

    public void setUploadContentType(String uploadContentType) {

       this.uploadContentType = uploadContentType;

    }

    public static int getBUFFER_SIZE() {

       return BUFFER_SIZE;

    }

 

    public String getUploadFileName() {

       return uploadFileName;

    }

    public void setUploadFileName(String uploadFileName) {

       this.uploadFileName = uploadFileName;

    }

   

     public StringgetUpLoadFileName(){

       return uploadFileName;

    }

    //自己封装的一个把源文件对象复制成目标文件对象

    public void copy(File src, File dst) {

        InputStream in = null;

        OutputStream out = null;

        try {

            in = new BufferedInputStream(newFileInputStream(src), BUFFER_SIZE);

            out = new BufferedOutputStream(newFileOutputStream(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();

        } finally {

            if (null != in) {

                try {

                    in.close();

                } catch (IOException e) {

                    e.printStackTrace();

                }

            }

            if (null != out) {

                try {

                    out.close();

                } catch (IOException e) {

                    e.printStackTrace();

                }

            }

        }

    }

    @Override

    public String execute() throws Exception {

        //根据服务器的文件保存地址和原文件名创建目录文件全路径

        String savePath ="E:/upload/"+this.getUploadFileName();//其中"E:/upload/"是上传文件在服务器的目录，提前创建好

        File saveFile = new File(savePath);

        System.out.println("上传文件名："+uploadFileName);

        copy(this.upload, saveFile);

        return SUCCESS;

    }