jetty文件服务器,在Jetty中访问Web容器外部的文件

2023-11-07

我在Windows XP SP3中使用Eclipse 3.6开发GWT应用程序。该应用程序需要显示驻留在服务器上的图形文件夹的内容到客户端。此外，图形文件夹不在Web容器内，而在硬盘中的另一个位置。 Eclispe使用Jetty HTTP服务器运行Web应用程序。我在我的RemoteServiceServlet中使用以下代码片段来测试文件访问并获取文本文件的内容。在Jetty中访问Web容器外部的文件

File inputFile = new File("C:\\mytext.txt");

FileReader fin = new FileReader(inputFile);

char c[] = new char[(char)inputFile.length()];

int i;

i = fin.read(c);

s = new String(c);

不幸的是我得到一个错误，我不知道如何翻译它以纠正代码(或任何配置文件)。

Initializing AppEngine server

Unable to access http://appengine.google.com/api/updatecheck?runtime=java&release=1.5.1&timestamp=1308100600&api_versions=['1.0']

java.net.UnknownHostException: appengine.google.com

at java.net.PlainSocketImpl.connect(Unknown Source)

at java.net.SocksSocketImpl.connect(Unknown Source)

at java.net.Socket.connect(Unknown Source)

at sun.net.NetworkClient.doConnect(Unknown Source)

at sun.net.www.http.HttpClient.openServer(Unknown Source)

at sun.net.www.http.HttpClient.(Unknown Source)

at sun.net.www.http.HttpClient.New(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)

at java.net.URL.openStream(Unknown Source)

at com.google.appengine.tools.info.RemoteVersionFactory.getVersion(RemoteVersionFactory.java:76)

at com.google.appengine.tools.info.UpdateCheck.checkForUpdates(UpdateCheck.java:99)

at com.google.appengine.tools.info.UpdateCheck.doNagScreen(UpdateCheck.java:174)

at com.google.appengine.tools.info.UpdateCheck.maybePrintNagScreen(UpdateCheck.java:142)

at com.google.appengine.tools.development.gwt.AppEngineLauncher.maybePerformUpdateCheck(AppEngineLauncher.java:137)

at com.google.appengine.tools.development.gwt.AppEngineLauncher.start(AppEngineLauncher.java:103)

at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:500)

at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1055)

at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:804)

at com.google.gwt.dev.DevMode.main(DevMode.java:309)

Logging to JettyLogger(null) via com.google.apphosting.utils.jetty.JettyLogger

Successfully processed C:\Documents and Settings\Giorgos\workspace\Zserver\war\WEB-INF/appengine-web.xml

Successfully processed C:\Documents and Settings\Giorgos\workspace\Zserver\war\WEB-INF/web.xml

The server is running at http://localhost:8888/

[ERROR] javax.servlet.ServletContext log: Exception while dispatching incoming RPC call

com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract java.lang.String mytest.client.GreetingService.greetServer(java.lang.String) throws java.lang.IllegalArgumentException' threw an unexpected exception: java.security.AccessControlException: access denied (java.io.FilePermission C:\mytext.txt read)

at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:385)

at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:588)

at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)

at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)

at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)

at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)

at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:35)