java - 访问网络路径中的文件

Question

我的网络路径中有一个 wav 文件，我可以通过运行为\192.106.100.35\Recorded 文件来访问它从该文件夹我必须访问 536.wav 文件，我尝试过 like

代码

File file = new File("file://192.106.100.35/Recorded%20files/536.wav");
    FileInputStream fis;
    byte[] buffer=null;

fis = new FileInputStream(file);
buffer= new byte[fis.available()];
fis.read(buffer);
fis.close();

但给出

java.io.FileNotFoundException: file:\192.106.100.35\Recorded%20files\536.wav (The filename, directory name, or volume label syntax is incorrect)
    at java.io.FileInputStream.open(Native Method)
    at java.io.FileInputStream.<init>(Unknown Source)
    at com.pointel.chart.PlayAudio.doGet(PlayAudio.java:39)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Unknown Source)
Oct 31, 2013 5:51:02 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet PlayAudio threw exception
java.lang.NullPointerException
    at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:83)
    at com.pointel.chart.PlayAudio.doGet(PlayAudio.java:62)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Unknown Source)

感谢任何帮助

Answer 1

java.io.File 仅适用于本地硬盘。使用 java.net.URL 代替网络资源:

new URL("http://192.106.100.35/Recorded%20files/536.wav");

要实现此功能，您需要 192.106.100.35 上有一个服务器，该服务器支持 HTTP 协议(protocol)并将文件公开为 /Recorded%20files/536.wav

其他选项是 NFS 或 SMB(在本地计算机上挂载远程文件系统；之后，您可以再次使用File)。