Struts2 多文件上傳

c6g3 10年前發布 | 5K 次閱讀 Java Struts2

1、建一個上傳頁面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、寫對應的action處理類： 

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;
}



}
</pre>


 3、配置struts.xml文件： 


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

 

 



 4、顯示頁面： 


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