我想执行使用两个Linux命令JAVA程序:如何在java中使用Process Builder来运行Linux shell命令?
- 使用ifconfig | grep -A 1'eth0'| tail -1 | cut -d':'-f 2 | cut -d''-f 1
这条命令给我和“IP地址”,我必须阅读并且在第二命令中使用它
- ./executeTest.sh“IP地址”
我的功能,其我使用运行这些命令是这样的:
public int exec(String[] command, Map<String, String> envt, StringBuilder stdout, StringBuilder stderr, int timeoutSeconds) throws TimeoutException, Exception{
int exitValue = -1;
final File stdoutFile = File.createTempFile("test_", "extproc.out");
final File stderrFile = File.createTempFile("test_", "extproc.err");
Process process = null;
try{
ProcessBuilder pb = new ProcessBuilder(command);
if(envt!=null){
for(Entry<String, String> entry : envt.entrySet()){
pb.environment().put(entry.getKey(), entry.getValue());
}
}
pb.redirectOutput(stdoutFile);
pb.redirectError(stderrFile);
process = pb.start();
boolean timedOut = false;
timedOut = !(process.waitFor(timeoutSeconds, TimeUnit.SECONDS));
if(timedOut){
System.out.println("Timed out waiting for process to complete.");
try{
process.destroyForcibly();
}catch(Exception killEx){
System.out.println("Error while terminating runaway process"+ killEx);
}
}else{
exitValue = process.exitValue();
}
stdout.append(FileUtils.readFileToString(stdoutFile));
stderr.append(FileUtils.readFileToString(stderrFile));
if(timedOut){
throw new TimeoutException();
}
}finally{
if(stdoutFile.exists()){
//File.deleteDirectory(stdoutFile);
}
if(stderrFile.exists()){
//FileUtils.deleteDirectory(stdoutFile);
}
if(process != null){
process.destroy();
}
}
return exitValue;
}
但是,我越来越以下错误,当我把这个功能您在上面写的命令:
java.io.IOException: Cannot run program "ifconfig | grep -A 1 'eth0' | tail -1 |cut -d ':' -f 2 |cut -d ' ' -f 1": error=2, No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
at IOxUnifiedSanityTestSuite.starWebServer.exec(starWebServer.java:66)
at IOxUnifiedSanityTestSuite.starWebServer$2.handle(starWebServer.java:148)
at IOxUnifiedSanityTestSuite.starWebServer$2.handle(starWebServer.java:124)
at io.vertx.ext.web.impl.RouteImpl.handleContext(RouteImpl.java:217)
at io.vertx.ext.web.impl.RoutingContextImplBase.iterateNext(RoutingContextImplBase.java:78)
at io.vertx.ext.web.impl.RoutingContextImpl.next(RoutingContextImpl.java:133)
at io.vertx.ext.web.impl.RouterImpl.accept(RouterImpl.java:79)
at io.vertx.core.http.impl.ServerConnection.handleRequest(ServerConnection.java:288)
at io.vertx.core.http.impl.ServerConnection.processMessage(ServerConnection.java:421)
at io.vertx.core.http.impl.ServerConnection.handleMessage(ServerConnection.java:134)
at io.vertx.core.http.impl.HttpServerImpl$ServerHandler.doMessageReceived(HttpServerImpl.java:623)
at io.vertx.core.http.impl.HttpServerImpl$ServerHandler.doMessageReceived(HttpServerImpl.java:573)
at io.vertx.core.http.impl.VertxHttpHandler.lambda$channelRead$0(VertxHttpHandler.java:71)
at io.vertx.core.impl.ContextImpl.lambda$wrapTask$2(ContextImpl.java:322)
at io.vertx.core.impl.ContextImpl.executeFromIO(ContextImpl.java:190)
at io.vertx.core.http.impl.VertxHttpHandler.channelRead(VertxHttpHandler.java:71)
at io.vertx.core.net.impl.VertxHandler.channelRead(VertxHandler.java:122)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:349)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:341)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:349)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:341)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:349)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:129)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:642)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:565)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:479)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:441)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: error=2, No such file or directory
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:248)
at java.lang.ProcessImpl.start(ProcessImpl.java:134)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
... 36 more
The way I am calling exec function is this:
String command1[] = new String[]{"ifconfig | grep -A 1 \'eth0\' | tail -1 |cut -d \':\' -f 2 |cut -d \' \' -f 1"};
StringBuilder stdout = new StringBuilder();
StringBuilder stderr = new StringBuilder();
exec(command1, null, stdout, stderr, 30)
String command2[] = new String[]{"./executeTest.sh ipaddress"};
StringBuilder stdout1 = new StringBuilder();
StringBuilder stderr1 = new StringBuilder();
exec(command2, null, stdout1, stderr1, 30)
谁能帮我找到了什么,我做错了什么?
请告诉你怎么称呼你的'exec' –
你可以从'java.net.NetworkInterface.getNetworkInterfaces(任何或全部)你自己的IP地址()'更有效地比运行6个程序 –