Struts2学习8--文件上传（多个文件上传）

用数组很简单。struts2的类型转换还是很强啊。

JSP:

<s:form action="doUploadByArray" method="post" enctype="multipart/form-data">
    <s:file name="doc" label="File"/>
    <s:file name="doc" label="File"/>
   <s:file name="doc" label="File"/>
    <s:submit/>
</s:form>

Action：和一个文件的很相似

public class FileUploadByArrayAction extends ActionSupport {

     private File[] doc;
     private String[] docContentType; //文件类型属性
     private String[] docFileName; //文件名
   
  


    public String[] getDocFileName() {
        return docFileName;
    }


    public void setDocFileName(String[] docFileName) {
        this.docFileName = docFileName;
    }


    private String path;


     public String execute() {

         for (int i=0;i<doc.length;i++)
         {
           String docfilename = getFileName(getDocFileName()[i]);
           FileOutputStream fos = null;
           FileInputStream fis = null;
          try {
              fos = new FileOutputStream(getPath() + "\" + docfilename);
              fis = new FileInputStream(getDoc()[i]);
              byte[] buffer = new byte[1024];
              int len = 0;
              while ((len = fis.read(buffer)) > 0) {
                  fos.write(buffer, 0, len);
              }
          } catch (Exception e) {
             System.out.println("文件上传失败");
             e.printStackTrace();
          } finally {
             close(fos, fis);
          }
         }
         

         return SUCCESS;
        
    }
        

private void close(FileOutputStream fos, FileInputStream fis) {
    if (fis != null) {
        try {
            fis.close();
        } catch (IOException e) {
            System.out.println("FileInputStream关闭失败");
            e.printStackTrace();
        }
    }
    if (fos != null) {
        try {
            fos.close();
        } catch (IOException e) {
            System.out.println("FileOutputStream关闭失败");
            e.printStackTrace();
        }
    }
}

     //生成一个新的文件名
    private String getFileName(String fileName) {
        int position = fileName.lastIndexOf(".");
        String extension = fileName.substring(position);
        return System.currentTimeMillis()+extension;
    }


    public String getPath() {
        return ServletActionContext.getServletContext().getRealPath(path);
    }


    public void setPath(String path) {
        this.path = path;
    }


    public File[] getDoc() {
        return doc;
    }


    public void setDoc(File[] doc) {
        this.doc = doc;
    }


    public String[] getDocContentType() {
        return docContentType;
    }


    public void setDocContentType(String[] docContentType) {
        this.docContentType = docContentType;
    }


    



}

struts.xml

        <action name="doUploadByArray" class="com.meetcomet.util.FileUploadByArrayAction">
            <param name="path">/upload</param>
            <result name="input">/index.jsp</result>
            <result name="success">/upload_success.jsp</result>
        </action>