Grails问题处理Tcp客户端和Tcp服务器
问题描述:
我创建了一个Tcp客户端& Groovy中的Tcp服务器,并且没有问题。我当时只连接到一台机器来收集数据。这次我尝试连接到多个主机上的脚本,它只保存我的grails应用程序中的一个主机信息。Grails问题处理Tcp客户端和Tcp服务器
我的Grails应用程序很简单,它有一个Machine类的域类(基本上是计算机及其所寻求的信息),它将使用我的TcpClient.groovy脚本连接并从TcpServer.groovy收集信息其他电脑。对于每个主机,它应该保存收集的信息,但是,它似乎跳过了将最后一个主机旁边的任何主机保存的问题。
TCP客户端:
//TCP CLIENT
public void queryData(def hosts) {
for(int aHost = 0; aHost < hosts.size; aHost++) {
cristalClient(hosts[aHost]);
}
}
public void cristalClient(String host) {
commands = ["dateScan", "computerName", "ip", "quit"]
answers = [commands.size]
requestSocket = new Socket(host, 2000)
r = new BufferedReader(new InputStreamReader(requestSocket.getInputStream()));
w = new BufferedWriter(new OutputStreamWriter(requestSocket.getOutputStream()));
String message = "Connection was successful"
message = readAvailable(r)
println("Sever>" + message)
for(int n = 0; n < commands.size; n++) {
sendMessage(commands[n]);
answers[n] = readAvailable(r)
}
lastRead = answers[0]
machineName = answers[1]
ipAddress = answers[3]
w.flush()
w.close()
}
public String readAvailable(r) {
String out = ""
String dum = null
while((dum = r.readLine()) !=null) {
if(dum == ">>EOF<<") return out
if(out.length() > 0) out += "\r\n"
out += dum
}
return out
}
public void sendMessage(msg) {
w.write(msg+"\r\n");
w.flush();
println("Client>" + msg);
}
public void printData(abc) {
abc.eachWithIndex { it, index ->
println "Drive $index"
it.each { k, v ->
println "\t$k = $v"
}
}
}
TCP服务器:
//TCP Server
def server = new ServerSocket(2000)
println("Waiting for connection")
server.accept() { socket ->
socket.withStreams { input, output ->
w = new BufferedWriter(new OutputStreamWriter(output))
String message = "Connection was successful"
r = new BufferedReader(new InputStreamReader(input))
while(true) {
if(message != null) {
sendMessage(message)
message = null
}
String a = r.readLine()
if(a == "dateScan") {
message = new Date
} else if(a == "computerName") {
message = InetAddress.getLocalHost().hostName
} else if(a == "ip") {
message = InetAddress.getLocalHost().getHostAddress()
} else if(a == "quit") {
server.close()
return
} else {
message = "$a command unknown."
println message
}
}
}
}
def sendMessage(String msg) {
println("sending: >" + msg + "<")
w.writeLine(msg)
w.writeLine(">>EOF<<")
w.flush();
}
的Grails控制器:
//Grails Controller
CollectMachines {
def w = new tcpClient()
def hosts = ["winXp", "Win7"]
w.queryData(hosts)
def abc = w.hardDrive
abc.each { println it }
int numberOfDrives = abc.size()
//add new machine
numberOfDrives.times {
def machineName = abc.computerName[it]
def machineInstance = Machine.findByMachineName(machineName)
if (!machineInstance) {
machineInstance = new Machine(machineName)
}
def lastScan = abc.lastScan[it]
def scanDate = new Date().parse("E MMM dd H:m:s z yyyy", lastScan)
def ipAddress = abc.ipAddress[it]
machineInstance.setIpAddress(ipAddress)
machineInstance.setDateScanned(scanDate)
machineInstance.save()
}
redirect(action: "list")
}
我是否需要暂停,以便服务器有时间发送响应?我的Tcp客户端发出所有的命令,但只获得最后一组命令的响应。
另外,对于我的代码片段中的缩进问题感到抱歉,我不确定它们为什么会搞砸。
。
答
你的代码有几个问题。例如,tcpClient从不分配给hardDrive
。假设这是一个疏忽,我认为真正的问题是tcpClient正在查询多个主机的数据,并将所有结果存储在相同的实例变量answers
,最终lastRead
,machineName
和ipAddress
。
您需要分别存储每个主机的结果。一种方法是将answers
作为列表的映射。例如,answers[host][0]
将是给定主机的第一个答案。
我不认为任何一种停顿是必要的。
我的歉意,我不小心拿出将数据推入硬盘的代码。我试图减少代码,并拿出不必要的来源。我认为你对每个主持人的地图都是正确的,我会实施它并回传。 – StartingGroovy 2011-01-21 20:21:10