我有一个要求，我（我的应用程序）通过TCP连接在Spring Integration通道中接收命令（字符串值）。当我收到命令时，应用程序将其发送到路由器以将请求路由到不同的通道，以便使用服务激活器激活服务。
路由器首先验证命令。如果该命令无效，则路由器不应允许进一步处理，并且需要将自定义错误消息发送回发送方（TCP客户端）。 我想要一个解决方案，我可以在路由之前或路由期间分析我的命令并发送错误响应而无需进一步处理？
以下是配置和代码。
Spring Integration Config
<ip:tcp-connection-factory id="server"
type="server"
port="${port}"
using-nio="true"
serializer="stxEtxSerializer"
deserializer="stxEtxSerializer" />
<ip:tcp-inbound-channel-adapter id="inAdapter.server"
channel="adiIncomingChannel"
connection-factory="server" />
<channel id="adiIncomingChannel" datatype="java.lang.String" />
<channel id="toSA" datatype="java.lang.String" />
<service-activator input-channel="toSA"
ref="tcpMessageReceiver"
method="receiveTcpMessageBytes" />
<beans:bean id="tcpMessageReceiver"
class="com.gcaa.adi.tcp.socket.TcpMessageReceiver" />
<channel id="toObAdapter" />
<ip:tcp-outbound-channel-adapter id="outAdapter.server"
channel="toObAdapter"
connection-factory="server" />
<router input-channel="adiIncomingChannel" ref="cmdRouter"></router>
<beans:bean id="cmdRouter" class="com.gcaa.adi.messaging.router.CommandRouter">
</beans:bean>
路由器类
public class CommandRouter{
public String contentRouter(byte[] cmdBytes){
String channelName = null;
String cmd = new String(cmdBytes);
//Data Requests
if(cmd.startsWith(AdiCommandType.DATA_REQUEST.getCode())){
AdiCommandValidationModel validCmdModel = validateDataCommand(cmd);
if(! validCmdModel.isValidCmd()){
// TODO: Send the error to requesting client. Error = "<ERROR::<DATA::REQUEST>::001>"
}
channelName = "toSA";
} // Health Check Response
else if(cmd.startsWith("<HEALTH::ACK>")){
channelName = "toSA";
}
return channelName;
}
private AdiCommandValidationModel validateDataCommand(String cmd){
AdiCommandValidationModel validModel = new AdiCommandValidationModel();
validModel.setCmd(cmd);
List<MatchedGroup> matchedCmdItems = GcaaUtil.matchByGroups("^<DATA::(\\d[1-31]-\\d[1-12]-20\\d\\d)::(\\d+)>", cmd);
if(null != matchedCmdItems && matchedCmdItems.size() > 0){
// 1. Check if request date is valid
if(!GcaaUtil.isEmptyString(matchedCmdItems.get(0).getGroup())){
boolean isValidCmd = GcaaUtil.isDateValid(matchedCmdItems.get(0).getGroup(), "DD-MM-YYYY");
validModel.setValidCmd(isValidCmd);
}else{
validModel.setValidCmd(false);
}
// return if date is not valid
if(! validModel.isValidCmd()){
validModel.setErrorCode(AdiErrorCode.DATA_INVALID_DATE);
return validModel;
}
// 2. Check that DI value is >=0. It should not be less than 0 or NULL
if(!GcaaUtil.isEmptyString(matchedCmdItems.get(1).getGroup())){
Integer di = null;
try{
di = Integer.parseInt(matchedCmdItems.get(1).getGroup());
}catch(NumberFormatException nfe){
}
if(di== null || di < 0){validModel.setErrorCode(AdiErrorCode.DATA_INVALID_DATE);
return validModel;}
}else{
validModel.setErrorCode(AdiErrorCode.INVALID_COMMAND);
return validModel;
}
}
if(! validModel.isValidCmd()){
validModel.setErrorCode(AdiErrorCode.INVALID_COMMAND);
return validModel;
}
return validModel;
}
}
更新 - 解决方案2
我已尝试过您在此this链接中引用的解决方案，但我在下面粘贴了一个错误。
下面列出了更新的Service Activator代码。我已从Router类中删除了验证并将其移至ServiceActivator。
验证ServiceActivator ：
public void validate(Message<byte[]> msg){
String channelName = null;
String cmd = new String(msg.getPayload());
AdiCommandValidationModel validCmdModel = validateDataCommand(cmd);
if(! validCmdModel.isValidCmd()){
// TODO: Send to error channel
String err = "<ERROR::"+validCmdModel.getCmd()+"::"+validCmdModel.getErrorCode().getCode()+">";
Message<String> mb = MessageBuilder.createMessage(err, msg.getHeaders());
throw new MessagingException(mb);
}
//Data Requests
if(cmd.startsWith(AdiCommandType.DATA_REQUEST.getCode())){
validCmdModel = validateDataCommand(cmd);
if(! validCmdModel.isValidCmd()){
// TODO: Send to error channel
throw new MessagingException(new GenericMessage<String>(validCmdModel.getValdationMsg()));
}
channelName = "toSA";
} // Health Check Response
else if(cmd.startsWith("<HEALTH::ACK>")){
channelName = "toSA";
}
}
修改了验证ServiceActivator的配置
<!-- Server side -->
<ip:tcp-connection-factory id="server"
type="server"
port="${port}"
using-nio="true"
serializer="stxEtxSerializer"
deserializer="stxEtxSerializer" />
<ip:tcp-inbound-channel-adapter id="inAdapter.server"
channel="adiIncomingChannel"
connection-factory="server"
error-channel="inputErrorChannel"/>
<!-- <object-to-string-transformer input-channel="adiIncomingChannel" output-channel="adiIncomingChannelStr"/> -->
<service-activator input-channel="adiIncomingChannel"
ref="adiInputValidator"
method="validate" />
<channel id="adiIncomingChannel"/>
<!-- <channel id="adiIncomingChannel" datatype="java.lang.String" /> -->
<channel id="inputErrorChannel" />
<channel id="toObAdapter" />
<ip:tcp-outbound-channel-adapter id="outAdapter.server"
channel="toObAdapter"
connection-factory="server" />
<transformer input-channel="inputErrorChannel"
output-channel="toObAdapter"
expression="payload.failedMessage.payload"/>
<!-- dataType attribute invokes the conversion service -->
<channel id="toSA" datatype="java.lang.String" />
<service-activator input-channel="toSA"
ref="tcpMessageReceiver"
method="receiveTcpMessageBytes" />
<!-- output-channel="toObAdapter" -->
<beans:bean id="tcpMessageReceiver"
class="com.gcaa.adi.tcp.socket.TcpMessageReceiver" />
<beans:bean id="adiInputValidator"
class="com.gcaa.adi.validation.AdiInputValidator" />
解决方案2的例外 - - - *** - - - - - - - - - - - - - - - - - * IN
TcpConnectionFailedCorrelation -*-*-*-*-*-*-*-*-*-*-**-*
Connection Correlation ID: null
Connection Source: org.springframework.integration.ip.tcp.TcpSendingMessageHandler#0
Connection time: 1486465992372
Cause = : org.springframework.messaging.MessageHandlingException: Unable to find outbound socket
2017-02-07 15:13:13.183 ERROR 4444 --- [pool-2-thread-3] o.s.i.i.tcp.connection.TcpNioConnection : Exception sending message: GenericMessage [payload=byte[10], headers={ip_tcp_remotePort=59521, ip_connectionId=127.0.0.1:59521:5677:9a7fd07e-716b-4d1c-8be6-c73223cea9db, ip_localInetAddress=/127.0.0.1, ip_address=127.0.0.1, id=ca87761a-4a39-5869-ad53-7e078cf40508, ip_hostname=127.0.0.1, timestamp=1486465989192}]
org.springframework.messaging.MessageHandlingException: Unable to find outbound socket
at org.springframework.integration.ip.tcp.TcpSendingMessageHandler.handleMessageInternal(TcpSendingMessageHandler.java:123) ~[spring-integration-ip-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:148) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:121) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:89) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:423) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:373) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115) ~[spring-messaging-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:45) ~[spring-messaging-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:105) ~[spring-messaging-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutput(AbstractMessageProducingHandler.java:292) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.handler.AbstractMessageProducingHandler.produceOutput(AbstractMessageProducingHandler.java:212) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutputs(AbstractMessageProducingHandler.java:129) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:115) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:148) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:121) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:89) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:423) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:373) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115) ~[spring-messaging-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:45) ~[spring-messaging-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:105) ~[spring-messaging-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.integration.endpoint.MessageProducerSupport.sendMessage(MessageProducerSupport.java:176) ~[spring-integration-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.ip.tcp.TcpReceivingChannelAdapter.onMessage(TcpReceivingChannelAdapter.java:88) ~[spring-integration-ip-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.ip.tcp.connection.TcpNioConnection.sendToChannel(TcpNioConnection.java:371) [spring-integration-ip-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.integration.ip.tcp.connection.TcpNioConnection.run(TcpNioConnection.java:240) [spring-integration-ip-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_74]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_74]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_74]
答案 0 :(得分：1)
您需要显示其余（上游）配置，但是，如果入站请求是通过网关，您通常会在路由器中引发异常并处理网关错误通道流上的错误。