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Struts2 多文件上传

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1、建一个上传页面multiUpload.jsp

<body>
    <h4>this is the fileupload2.jsp for many file</h4>
    <form action="fileupload" method="post" enctype="multipart/form-data">
        username : <input type="text" name="username" ><br>
        file1 : <input type="file" name="file"><br>
        file2 : <input type="file" name="file"><br>
        file3 : <input type="file" name="file"><br>
        <input type="submit" value="submit"><br> 
    </form>
  </body>

2、写对应的action处理类:

public class UpLoad2Action extends ActionSupport {

    private String username;
    private List<File> file;
    private List<String> fileFileName;
    private List<String> fileContentType;

    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public List<File> getFile() {
        return file;
    }

    public void setFile(List<File> file) {
        this.file = file;
    }
    public List<String> getFileFileName() {
        return fileFileName;
    }
    public void setFileFileName(List<String> fileFileName) {
        this.fileFileName = fileFileName;
    }
    public List<String> getFileContentType() {
        return fileContentType;
    }
    public void setFileContentType(List<String> fileContentType) {
        this.fileContentType = fileContentType;
    }

    @Override
    public String execute() throws Exception {
        for (int i = 0; i < file.size(); i++) {
            InputStream is = new FileInputStream(file.get(i));
            String root = ServletActionContext.getRequest().getRealPath("/upload");
            File dest = new File(root, fileFileName.get(i));
            OutputStream os = new FileOutputStream(dest);
            byte[] buffer = new byte[1024];
            int len = 0;
            while ((len = is.read(buffer)) != -1) {
                os.write(buffer, 0, len);
            }
            is.close();
            os.close();
        }
        return SUCCESS;
    }
}

3、配置struts.xml文件:

<action name="fileupload" class="com.strong.action.UpLoad2Action">
            <result name="success">/present2.jsp</result>
        </action>

4、显示页面:

<body>
    <h4>this is the fileUploadResult2.jsp</h4>
     username : <s:property value="username"/><br>
     <!-- 迭代去取上传文件的名字 ,-->
     <s:iterator value="fileFileName" id="f">
         fileName: <s:property value="#f"/><br>
     </s:iterator>
  </body>

标签:java

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