File download problem

[Se...@alcatel-lucent.com]

Hello All,

I get the following error, when I try downloading files through the File download Struts2 application. I have given the Configuration detail and the Action class. Could someone take a look and let me know where this breaks?


Thank you,
Senthil



javax.servlet.ServletException: java.lang.IllegalArgumentException: Can not find a java.io.InputStream with the name [inputStream] in the invocation stack. Check the <param name="inputName"> tag specified for this action.
	org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:515)
	org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:419)

*root cause*

java.lang.IllegalArgumentException: Can not find a java.io.InputStream with the name [inputStream] in the invocation stack. Check the <param name="inputName"> tag specified for this action.
	org.apache.struts2.dispatcher.StreamResult.doExecute(StreamResult.java:189)
	org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:178)
	com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:343)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
	com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:123)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)


*Configuration*

        <action name="FileDownloadAction" class="com.FileDownloadAction">
        		<interceptor-ref name="basicStack"/>
            <result name="success" type="stream">
                <param name="inputName">inputStream</param>
            </result>
        </action> 

*Download Action Class*

public class FileDownloadAction implements Action {

    private String inputPath;
    private String contentType;
    private String inputName;
    private String contentDisposition;
    private String fileId;
    private int bufferSize;    
    
    
    public void setInputPath(String value) {
        inputPath = value;
    }

    public InputStream getInputStream() throws Exception {
        return ServletActionContext.getServletContext().getResourceAsStream(inputPath);
    }

    public String execute() throws Exception {
        return SUCCESS;
    }

	/**
	 * @return the bufferSize
	 */
	public int getBufferSize() {
		return bufferSize;
	}

	/**
	 * @param bufferSize the bufferSize to set
	 */
	public void setBufferSize(int bufferSize) {
		this.bufferSize = 4096;
	}

	/**
	 * @return the contentDisposition
	 */
	public String getContentDisposition() {
		return contentDisposition;
	}

	/**
	 * @param contentDisposition the contentDisposition to set
	 */
	public void setContentDisposition(String contentDisposition) {
		this.contentDisposition = "filename=\"portal_logo.jpg\"";
	}

	/**
	 * @return the contentType
	 */
	public String getContentType() {
		return contentType;
	}

	/**
	 * @param contentType the contentType to set
	 */
	public void setContentType(String contentType) {
		this.contentType = "image/jpeg";
	}

	/**
	 * @return the inputName
	 */
	public String getInputName() {
		return inputName;
	}

	/**
	 * @param inputName the inputName to set
	 */
	public void setInputName(String inputName) {
		this.inputName = inputName;
	}

	/**
	 * @return the inputPath
	 */
	public String getInputPath() {
		return inputPath;
	}

	/**
	 * @return the fileId
	 */
	public String getFileId() {
		return fileId;
	}

	/**
	 * @param fileId the fileId to set
	 */
	public void setFileId(String fileId) {
		this.fileId = fileId;
	}


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