使用骆驼生产者模板和 http 时没有得到 http 响应正文

Question

我正在尝试使用http://camel.apache.org/http.html 上指定的 producertemplate 调用我的简单 GET rest 服务调用。我在这里以 google.com 为例。这是来自未在任何容器上运行的独立客户端。我在这里没有做什么？

SpringCamelContext camelcontext = (SpringCamelContext) springContext.getBean("camelcontextbean");

ProducerTemplate template = camelcontext.createProducerTemplate();
camelcontext.start();
Exchange exchange = template.send("http://www.google.com/search", new Processor() {
            public void process(Exchange exchange) throws Exception {
                exchange.getIn().setHeader(Exchange.HTTP_QUERY, "hl=en&q=activemq");
            }
   });

   Message out = exchange.getOut();
System.out.println("Response from http template is "+exchange.getOut().getBody());
   System.out.println("status header is "+out.getHeader(Exchange.HTTP_RESPONSE_CODE));

我没有得到任何回应。输出是：

来自 http 模板的响应为空

状态头为空

Answer 1

就好像你正在创建从春camelContext因为如果我删除，并得到了顺便做CamelContext关闭DefaultCamelContext我没有看到一个问题：

import org.apache.camel.*;
import org.apache.camel.impl.DefaultCamelContext;

public class Main {

    public static void main(String ... args){
        CamelContext camelContext = new DefaultCamelContext();
        ProducerTemplate template = camelContext.createProducerTemplate();

        Exchange exchange = template.send("http://www.google.com/search", new Processor() {
            public void process(Exchange exchange) throws Exception {
                exchange.getIn().setHeader(Exchange.HTTP_QUERY, "hl=en&q=activemq");
            }
        });

        Message out = exchange.getOut();
        System.out.println("Response from http template is "+exchange.getOut().getBody());
        System.out.println("status header is "+out.getHeader(Exchange.HTTP_RESPONSE_CODE));
    }

}

产量

Response from http template is org.apache.camel.converter.stream.CachedOutputStream$WrappedInputStream@26659db7
status header is 200