Need input on accessing http servlet

[ibrahimis <ib...@gmail.com>]

Hi, I have created servlet which will return a JSON object. I am trying to
connect the servlet using Camel and put it in a buffer. But my servlet
didn't invoked at all and not throwing any error. I am currently in the
beginning stage on using camel. 

Please help.

I have used the following code.

package com.test.camel;

import java.io.IOException;
import java.io.OutputStream;

import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.builder.RouteBuilder;

public class TestRouteBuilder extends RouteBuilder {

	@Override
	public void configure() throws Exception {

		from("servlet:localhost:9078/ThirdPartyApplication/MaintainCases")
				.setHeader("stream", constant(mystream))
				.process(new Processor() {
					public void process(Exchange exchange) throws Exception {
						String contentType = exchange.getIn().getHeader(
								Exchange.CONTENT_TYPE, String.class);
						String path = exchange.getIn().getHeader(
								Exchange.HTTP_URI, String.class);
						path = path.substring(path.lastIndexOf("/"));

						exchange.getOut().setHeader(Exchange.CONTENT_TYPE,
								contentType + "; charset=UTF-8");
						exchange.getOut().setHeader("PATH", path);
						exchange.getOut().setBody("*Hello World*");
					}
				}).to("stream:header");

		
	}

	private OutputStream mystream = new MyOutputStream();
	private StringBuilder sb = new StringBuilder();

	private class MyOutputStream extends OutputStream {

		public void write(int b) throws IOException {
			sb.append((char) b);
		}
	}

}



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Re: Need input on accessing http servlet

[David Parker <df...@gmail.com>]

As a work-around, you might create a class that invokes a HTTPClient or
other URL-friendly utility.

Invoke that logic in your route to retrieve data and then process it.

On Fri, Sep 23, 2016 at 3:08 AM, jpeschke <pe...@etone.de> wrote:

> Hi,
> You cannot use the Servlet component to connect to a third party servlet on
> your server context.
> The "servlet:" endpoint is only to offer a servlet interface to your camel
> routes. See documentation at http://camel.apache.org/servlet.html:
>
>
> > You can consume only from endpoints generated by the Servlet component.
> > Therefore, it should be used only as input into your Camel routes. To
> > issue HTTP requests against other HTTP endpoints, use the HTTP Component
>
> So the HTTP-Component (http://camel.apache.org/http.html) or the
> Jetty-Component (http://camel.apache.org/jetty.html) should do the trick.
>
> Best regards,
> Joerg
>
>
>
> --
> View this message in context: http://camel.465427.n5.nabble.
> com/Need-input-on-accessing-http-servlet-tp5787954p5787964.html
> Sent from the Camel - Users mailing list archive at Nabble.com.
>

Re: Need input on accessing http servlet

[jpeschke <pe...@etone.de>]

Hi,
You cannot use the Servlet component to connect to a third party servlet on
your server context.
The "servlet:" endpoint is only to offer a servlet interface to your camel
routes. See documentation at http://camel.apache.org/servlet.html:


> You can consume only from endpoints generated by the Servlet component.
> Therefore, it should be used only as input into your Camel routes. To
> issue HTTP requests against other HTTP endpoints, use the HTTP Component

So the HTTP-Component (http://camel.apache.org/http.html) or the
Jetty-Component (http://camel.apache.org/jetty.html) should do the trick.

Best regards,
Joerg



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