使用Eclipse调用异步java servlet时出错&;专家
我正在使用EclipseIDE处理servlet。我创建了一个maven项目来使用异步Servlet3.0,并为其添加了适当的依赖项。代码使用Eclipse调用异步java servlet时出错&;专家,java,eclipse,maven,servlets,jetty,Java,Eclipse,Maven,Servlets,Jetty,我正在使用EclipseIDE处理servlet。我创建了一个maven项目来使用异步Servlet3.0,并为其添加了适当的依赖项。代码request.isAsyncSupported()返回true。现在,当我调用servlet时,它会给出以下错误 警告:oejs.ServletHandler:/testplugin/JsonServlet java.lang.IllegalStateException:已调度,初始 位于org.eclipse.jetty.server.Request.ge
request.isAsyncSupported()
返回true。现在,当我调用servlet时,它会给出以下错误
警告:oejs.ServletHandler:/testplugin/JsonServlet
java.lang.IllegalStateException:已调度,初始
位于org.eclipse.jetty.server.Request.getAsyncContext(Request.java:325)
位于com.ajitpals.search.grid.fs.JsonServlet.doGet(JsonServlet.java:42)
位于javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
位于javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
位于org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:594)
位于org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486)
位于org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
位于org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
位于org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233)
位于org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1065)
位于org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:413)
位于org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)
位于org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:999)
位于org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
位于org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
位于org.eclipse.jetty.server.server.handle(server.java:351)
位于org.eclipse.jetty.server.AbstractHttpConnection.HandlerRequest(AbstractHttpConnection.java:454)
位于org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:890)
位于org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:944)
http.HttpParser.parseNext(HttpParser.java:634)
http.HttpParser.parseAvailable(HttpParser.java:230)
位于org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:77)
位于org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)
位于org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)
位于org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
位于org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
位于java.lang.Thread.run(未知源)
我在maven项目中添加了以下依赖项
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1-b08</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-server</artifactId>
<version>9.0.2.v20130417</version>
</dependency>
谢谢这是代码错误,如果我们尝试在
请求之前获取getAsyncRequest()
。startAsync()
将生成错误。可能重复:
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
if(request.isAsyncSupported()){
final AsyncContext asynCtx = request.getAsyncContext();
//Set the timeout
asynCtx.setTimeout(35000);
//Add the listeners.
asynCtx.addListener(new AsyncListener() {
public void onTimeout(AsyncEvent arg0) throws IOException {
System.out.println("timeout");
}
public void onStartAsync(AsyncEvent arg0) throws IOException {
System.out.println("on start");
}
public void onError(AsyncEvent arg0) throws IOException {
System.err.println("on error");
}
public void onComplete(AsyncEvent arg0) throws IOException {
System.out.println("On complete");
}
});
//start the new thread.
asynCtx.start(new Runnable() {
public void run() {
try{
asynCtx.getResponse().getWriter().write(MessageFormat.format("<h1>Process task id : [{0}] and Name [{1}]</h1>",
Thread.currentThread().getId()));
}catch(Exception ex){
System.err.println("async error " + ex.getMessage());
}
}
});
}
}
PWC6345: There is an error in invoking javac. A full JDK (not just JRE) is required Caused by:org.apache.jasper.JasperException:PWC6345: There is an error in invoking javac. A full JDK (not just JRE) is required