我有一个标准路由，将 ftp uri 作为消费者端点，并定义了 pollStrategy 并将其添加到注册表中。但是，我收到以下错误：
Caused by: java.lang.IllegalArgumentException: Could not find a suitable setter for property: pollStrategy as there isn't a setter method with same type: java.lang.String nor type conversion possible: No type converter available to convert from type: java.lang.String to the required type: org.apache.camel.spi.PollingConsumerPollStrategy with value #pollingStrategy
at org.apache.camel.util.IntrospectionSupport.setProperty(IntrospectionSupport.java:588)
at org.apache.camel.util.IntrospectionSupport.setProperty(IntrospectionSupport.java:616)
at org.apache.camel.util.IntrospectionSupport.setProperties(IntrospectionSupport.java:473)
at org.apache.camel.util.IntrospectionSupport.setProperties(IntrospectionSupport.java:483)
at org.apache.camel.util.EndpointHelper.setProperties(EndpointHelper.java:255)
at org.apache.camel.impl.DefaultComponent.setProperties(DefaultComponent.java:257)
at org.apache.camel.component.file.GenericFileComponent.createEndpoint(GenericFileComponent.java:67)
at org.apache.camel.component.file.GenericFileComponent.createEndpoint(GenericFileComponent.java:37)
at org.apache.camel.impl.DefaultComponent.createEndpoint(DefaultComponent.java:114)
at org.apache.camel.impl.DefaultCamelContext.getEndpoint(DefaultCamelContext.java:568)
我尝试了不同的组合，但总是以这个错误告终。谁能发现我错过了什么？我的代码看起来与我看过的 Camel 单元测试非常相似。路线如下所示：
import org.apache.camel.*;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.impl.DefaultPollingConsumerPollStrategy;
import org.apache.camel.spi.PollingConsumerPollStrategy;
import org.apache.camel.util.ServiceHelper;
import org.apache.commons.lang3.StringUtils;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import static org.apache.camel.builder.ProcessorBuilder.setBody;
public class Test extends RouteBuilder {
final CamelContext camelContext = getContext();
final org.apache.camel.impl.SimpleRegistry registry = new org.apache.camel.impl.SimpleRegistry();
final org.apache.camel.impl.CompositeRegistry compositeRegistry = new org.apache.camel.impl.CompositeRegistry();
private final CountDownLatch latch = new CountDownLatch(1);
@Override
public void configure() throws Exception {
ExceptionBuilder.setup(this);
compositeRegistry.addRegistry(camelContext.getRegistry());
compositeRegistry.addRegistry(registry);
((org.apache.camel.impl.DefaultCamelContext) camelContext).setRegistry(compositeRegistry);
registry.put("pollingStrategy", new MyPollStrategy());
from("ftp://user@localhost/receive/in?password=1234&autoCreate=false&startingDirectoryMustExist=true&pollStrategy=#pollingStrategy&fileName=test.csv&consumer.delay=10m")
.convertBodyTo(String.class)
.log(LoggingLevel.INFO, "TEST", "${body} : ${headers}");
}
private class MyPollStrategy implements PollingConsumerPollStrategy {
int maxPolls=3;
public boolean begin(Consumer consumer, Endpoint endpoint) {
return true;
}
public void commit(Consumer consumer, Endpoint endpoint, int polledMessages) {
if (polledMessages > maxPolls) {
maxPolls = polledMessages;
}
latch.countDown();
}
public boolean rollback(Consumer consumer, Endpoint endpoint, int retryCounter, Exception cause) throws Exception {
return false;
}
}
}
请注意，如果我删除 uri 中的 pollStrategy 引用，那么一切正常。