Struts2下读取声音文件流并返回至前台

项目中遇到直接读取声音文件时，对于绝对地址（如D:\文件）,w无法获取，而在浏览器直接输地址确可以。为了解决问题，下面采用流的方式返回前端。
Java代码

@ParentPackage(“tads-support”)
public class WavFileManage extends BaseAction {
	private ByteArrayInputStream imageStream;
	private static final long serialVersionUID = -4106065750866542811L;
     
    public String image() throws IOException{
	    HttpServletRequest request = ServletActionContext.getRequest();
	    //获取webroot下的文件
	    String path   =   request.getParameter("filename");
	    //创建文件输入流
	    FileInputStream fis = new  FileInputStream(path);
	    //放入bufferedInputStream 
	    BufferedInputStream bis=new BufferedInputStream(fis);
	   //定义ByteArrayOutStream
	    ByteArrayOutputStream output = new ByteArrayOutputStream(); 
	    
	    int c=bis.read();//读取bis流中的下一个字节
	    while(c!=-1){
	        output.write(c);
	        c=bis.read();
	    }
	    
	    bis.close();
	    
	    imageStream = new ByteArrayInputStream(output.toByteArray());
	    
	    return SUCCESS;
	}

	public ByteArrayInputStream getImageStream() {
	    return imageStream;
	}
	
	public void setImageStream(ByteArrayInputStream imageStream) {
	    this.imageStream = imageStream;
	}
}

struts.xml配置

<struts>
    <package name=“tads-support” namespace="/" extends=“tads-default”>
	    <!-- 返回声音流 -->
	    <action name=“image” class=“com.kthw.tads.action.WavFileManage” method=“image”>
		    <result name=“success” type=“stream”>
			    <param name=“contentType”>audio/wav 《param>
			    <param name=“inputName”>imageStream 《param>
			    < param name=“bufferSize”>2048 《param>
		    </result>
	    </action>
    </package>
</struts>

---

前端

<a href="image.do?filename=D:**** " target="_blank" >