Getting Data In

How to resolve error "java.lang.IllegalArgumentException: URI can't be null" when testing HTTP Event Collector from a Java client?

SGADE
Engager

I am trying to test the HTTP Event Collector from a java client, referred the Java project from splunk.com. Please help to resolve the issue.
We use cookie for the authorization . Thanks SG

        serviceArgs.setHost("https://test2751.md4.abc.com");
        serviceArgs.setCookie("credential=cookie value");
        serviceArgs.setPort(8088);
        serviceArgs.setScheme("https");
        serviceArgs.setToken("0B999603-81C7-4930-abcd-639825CE66E6");
        serviceArgs.setSSLSecurityProtocol(SSLSecurityProtocol.TLSv1_2); // TLSv1 didn't work.

      service = Service.connect(serviceArgs);
      service.login();

Below is the exception trace:

java.lang.IllegalArgumentException: URI can't be null.
    at sun.net.spi.DefaultProxySelector.select(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(Unknown Source)
    at com.splunk.HttpService.send(HttpService.java:403)
    at com.splunk.Service.send(Service.java:1293)
    at com.splunk.HttpService.post(HttpService.java:308)
    at com.abc.splunk.logging.test.TestUtil.enableHttpEventCollector(TestUtil.java:197)
    at com.abc.splunk.logging.test.HttpEventCollector_Log4j2Test.canSendEventUsingLog4j2(HttpEventCollector_Log4j2Test.java:40)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

jantona
Engager

I was able to work-around these issues by effectively embedding the REST API with CURL into Java like this:

public String curlConnect() throws Exception {
        String r = null;
        try {
            List<String> theCommand = new ArrayList<String>();
            theCommand.add("curl");
            theCommand.add("-sk");
            theCommand.add(this.surl + "/services/auth/login?output_mode=json");
            logger.debug(this.surl+ "/services/auth/login?output_mode=json");
            logger.debug("-d username=" + this.user + " password=XXXXXX");
            theCommand.add("-d");
            theCommand.add("username=" + this.user);
            theCommand.add("-d");
            theCommand.add("password=" + this.token);

            ProcessBuilder pb = new ProcessBuilder(theCommand);

            pb.directory(new File(System.getProperty("input.file.path")));
            pb.redirectErrorStream(true);
            Process p = pb.start();
            InputStream is = p.getInputStream();

            r = IOUtils.toString(is);
            r = r.substring(r.indexOf("{\"sessionKey\":\""), r.length());
            JSONObject jsonResponse = new JSONObject(r);
            this.sessionKey = jsonResponse.getString("sessionKey");
            r = this.sessionKey;
            logger.debug(r);

        } catch ( Exception e ) {
            logger.error(this.surl);
            logger.error(e.getMessage());
            throw e;
        }
        return r;
    }

    public String query(String splunkQuery) throws Exception {
        String r = null;
        try {
            List<String> theCommand = new ArrayList<String>();
            theCommand.add("curl");
            theCommand.add("-sku");
            theCommand.add(this.user+":"+this.token);
            //theCommand.add("-H");
            //theCommand.add("\"Authorization: Splunk " + this.sessionKey + "\"");
            theCommand.add(this.surl + "/services/search/jobs?output_mode=json");
            logger.debug(this.surl+ "/services/search/jobs?output_mode=json");
            theCommand.add("-d");
            theCommand.add("search=" + URLEncoder.encode(splunkQuery, "UTF-8"));
            logger.info("search=" + URLEncoder.encode(splunkQuery, "UTF-8"));
            //theCommand.add("-d");
            //theCommand.add("output_mode=json");

            ProcessBuilder pb = new ProcessBuilder(theCommand);

            pb.directory(new File(System.getProperty("input.file.path")));
            pb.redirectErrorStream(true);
            Process p = pb.start();
            InputStream is = p.getInputStream();

            String theResult = IOUtils.toString(is);
            logger.info(theResult);

            theResult = theResult.substring(theResult.indexOf("{\"sid\":\""), theResult.length());
            JSONObject jsonResponse = new JSONObject(theResult);
            r = jsonResponse.getString("sid");

            while ( !resultsReady(r)) {
                logger.info("waiting 30 seconds for async report to finish running sid " + r);
                java.util.concurrent.TimeUnit.SECONDS.sleep(30);
            }
        } catch ( Exception e) {
            logger.error(this.surl);
            logger.error(e.getMessage());
            throw e;
        }
        return r;
    }
0 Karma

ordiel
Engager

Bit ridiculous that following the provided example does not work isn't it?

0 Karma

marcellodesales
Path Finder

FU**#$(@#)#(@)(# The WORST API EVER

0 Karma

jantona
Engager

Did you resolve this? I am having the same problem...

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Data Drivers: How We're Streaming Real-Time F1 Telemetry Directly into Splunk ...

Data Drivers: Every Lap Tells a Story The Spectacle Two F1 racing sims go head-to-head on the .conf26 show ...

Data Management Digest – July 2026

  Welcome to the July 2026 edition of Data Management Digest! As your trusted partner in data innovation, the ...

Announcing Modern Navigation: A New Era of Splunk User Experience

We are excited to introduce the Modern Navigation feature in the Splunk Platform, available to both cloud and ...