一生一火花

Webwork的文件上传是采用拦截器来实现的

下面我们按照从客户端到服务器端的顺序讲讲如何配置：

1．第一点要注意的是form表单的两个属性

method="post" enctype="multipart/form-data" 一定要正确设置

2．Action配置：上传文件的action要配置拦截器

<interceptor-ref name="fileUploadStack"></interceptor-ref>

UploadAction类：这个类中的方法名字跟form表单中文件上传输入筐关系很密切

//这3个字段是必须的

private File upload; //取得上传得文件

    private String contentType;  //文件类型

private String fileName;   //原始文件名

public void setUpload(File file) {

              this.upload = file;

       }

       public String getContentType() {

              return contentType;

       }

       public void setContentType(String contentType) {

              this.contentType = contentType;

       }

       public String getUploadFileName() {

              return fileName;

       }

       public void setUploadFileName(String fileName) {

              this.fileName = fileName;

       }

<form name="form1" method="post" action="adSave.action"

enctype="multipart/form-data">

上传文件：<input type="file" name="upload" >

</form>

注意这儿的输入框

name=’upload’ 对应UploadAction的public void setUpload(File file)

文件获取方法为public String getUploadFileName()，方法格式为getXXXFileName();

Webwork默认的是用commons fileupload工具上传，它需要一个临时目录 在webwork.properties中可以配置webwork.multipart.saveDir=/temp

处理程序为

protected void uploadFile(File uploadFile, String savePath, String fileName)throws IOException{

              if (null != uploadFile) {

                     FileOutputStream outputStream = new FileOutputStream(savePath + fileName);

                     FileInputStream fileIn = new FileInputStream(uploadFile);

                     byte[] buffer = new byte[1024];

                     int len;

                     while ((len = fileIn.read(buffer)) > 0) {

                            outputStream.write(buffer, 0, len);

                     }

                     fileIn.close();

                     outputStream.close();

              }

       }