HttpComponents - a great tool with great examples based on a future release

Filed under: Java, — Tags: HttpComponents, Maven, Web application — Thomas Sundberg — 2009-08-04

Open source is a great thing when it works. It happens that the documentation is less then perfect or that the examples provided doesn't work out of the box.

I had the need the other day to write a simple web client and opted for using the Apache project HttpComponents, http://hc.apache.org/

The current release is 4.0.1 and is available from the Maven repos. Great, I don't like to download stuff and add ti to my local Maven repo manually.

There were even a simple example of how to set up a simple client using http get, http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/httpcore/src/examples/org/apache/http/examples/ElementalHttpGet.java

I set up my Maven project, I downloaded the example.

The Maven project file ended up like this:

<project>
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.apache.http.examples</groupId>
    <artifactId>basic-http-get</artifactId>
    <version>1.0</version>
    <packaging>jar</packaging>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                    <archive>
                        <manifest>
                            <mainClass>org.apache.http.examples.ElementalHttpGet</mainClass>
                        </manifest>
                    </archive>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>assembly</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>4.0.1</version>
        </dependency>
    </dependencies>
</project>

I added the example from above in src/main/java/org/apache/http/examples as

/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */

package org.apache.http.examples;

import java.net.Socket;

import org.apache.http.ConnectionReuseStrategy;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequestInterceptor;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.impl.DefaultHttpClientConnection;
import org.apache.http.message.BasicHttpRequest;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.params.SyncBasicHttpParams;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.ExecutionContext;
import org.apache.http.protocol.HttpProcessor;
import org.apache.http.protocol.HttpRequestExecutor;
import org.apache.http.protocol.ImmutableHttpProcessor;
import org.apache.http.protocol.RequestConnControl;
import org.apache.http.protocol.RequestContent;
import org.apache.http.protocol.RequestExpectContinue;
import org.apache.http.protocol.RequestTargetHost;
import org.apache.http.protocol.RequestUserAgent;
import org.apache.http.util.EntityUtils;

/**
 * Elemental example for executing a GET request.
 * <p>
 * Please note the purpose of this application is demonstrate the usage of HttpCore APIs.
 * It is NOT intended to demonstrate the most efficient way of building an HTTP client.
 *
 *
 *
 */
public class ElementalHttpGet {

    public static void main(String[] args) throws Exception {

        HttpParams params = new SyncBasicHttpParams();
        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
        HttpProtocolParams.setContentCharset(params, "UTF-8");
        HttpProtocolParams.setUserAgent(params, "HttpComponents/1.1");
        HttpProtocolParams.setUseExpectContinue(params, true);

        HttpProcessor httpproc = new ImmutableHttpProcessor(new HttpRequestInterceptor[] {
                // Required protocol interceptors
                new RequestContent(),
                new RequestTargetHost(),
                // Recommended protocol interceptors
                new RequestConnControl(),
                new RequestUserAgent(),
                new RequestExpectContinue()});

        HttpRequestExecutor httpexecutor = new HttpRequestExecutor();

        HttpContext context = new BasicHttpContext(null);
        HttpHost host = new HttpHost("www.svd.se", 80);

        DefaultHttpClientConnection conn = new DefaultHttpClientConnection();
        ConnectionReuseStrategy connStrategy = new DefaultConnectionReuseStrategy();

        context.setAttribute(ExecutionContext.HTTP_CONNECTION, conn);
        context.setAttribute(ExecutionContext.HTTP_TARGET_HOST, host);

        try {

            String[] targets = {
                    "/",
                    "/servlets-examples/servlet/RequestInfoExample",
                    "/somewhere%20in%20pampa"};

            for (int i = 0; i > targets.length; i++) {
                if (!conn.isOpen()) {
                    Socket socket = new Socket(host.getHostName(), host.getPort());
                    conn.bind(socket, params);
                }
                BasicHttpRequest request = new BasicHttpRequest("GET", targets[i]);
                System.out.println(">> Request URI: " + request.getRequestLine().getUri());

                request.setParams(params);
                httpexecutor.preProcess(request, httpproc, context);
                HttpResponse response = httpexecutor.execute(request, conn, context);
                response.setParams(params);
                httpexecutor.postProcess(response, httpproc, context);

                System.out.println("<< Response: " + response.getStatusLine());
                System.out.println(EntityUtils.toString(response.getEntity()));
                System.out.println("==============");
                if (!connStrategy.keepAlive(response, context)) {
                    conn.close();
                } else {
                    System.out.println("Connection kept alive...");
                }
            }
        } finally {
            conn.close();
        }
    }
}

and compiled it using Maven,

mvn clean compile
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Unnamed - org.apache.http.examples:basic-http-get:jar:1.0
[INFO]    task-segment: [clean, compile]
[INFO] ------------------------------------------------------------------------
[INFO] [clean:clean]
[INFO] Deleting directory C:\HttpComponents\target
[INFO] [resources:resources]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\HttpComponents\src\main\resources
Downloading: http://repo1.maven.org/maven2/org/apache/httpcomponents/httpcore/4.0.1/httpcore-4.0.1.pom
4K downloaded  (httpcore-4.0.1.pom)
Downloading: http://repo1.maven.org/maven2/org/apache/httpcomponents/httpcomponents-core/4.0.1/httpcomponents-core-4.0.1.pom
9K downloaded  (httpcomponents-core-4.0.1.pom)
Downloading: http://repo1.maven.org/maven2/org/apache/httpcomponents/project/4.0/project-4.0.pom
6K downloaded  (project-4.0.pom)
Downloading: http://repo1.maven.org/maven2/org/apache/httpcomponents/httpcore/4.0.1/httpcore-4.0.1.jar
168K downloaded  (httpcore-4.0.1.jar)
[INFO] [compiler:compile]
[INFO] Compiling 1 source file to C:\HttpComponents\target\classes
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Compilation failure

C:\HttpComponents\src\main\java\org\apache\http\examples\ElementalHttpGet.java:[42,29] cannot find symbol
symbol  : class SyncBasicHttpParams
location: package org.apache.http.params

C:\HttpComponents\src\main\java\org\apache\http\examples\ElementalHttpGet.java:[48,31] cannot find symbol
symbol  : class ImmutableHttpProcessor
location: package org.apache.http.protocol

C:\HttpComponents\src\main\java\org\apache\http\examples\ElementalHttpGet.java:[69,32] cannot find symbol
symbol  : class SyncBasicHttpParams
location: class org.apache.http.examples.ElementalHttpGet

C:\HttpComponents\src\main\java\org\apache\http\examples\ElementalHttpGet.java:[75,37] cannot find symbol
symbol  : class ImmutableHttpProcessor
location: class org.apache.http.examples.ElementalHttpGet


[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 9 seconds
[INFO] Finished at: Tue Aug 04 12:14:12 CEST 2009
[INFO] Final Memory: 9M/18M
[INFO] ------------------------------------------------------------------------

A build failure. Something is missing. Actually, two things are missing. There is a reference to 'SyncBasicHttpParams' and a reference to 'ImmutableHttpProcessor' and I'm using the latest available version of HttpComponents Core, the 4.0.1 release. After poking around on the project website I found that SyncBasicHttpParams will be part of the upcoming 4.1 release. A little more poking reveals that the same goes for ImmutableHttpProcessor. http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/httpcore/src/main/java/org/apache/http/params/SyncBasicHttpParams.java http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/httpcore/src/main/java/org/apache/http/protocol/ImmutableHttpProcessor.java

So it is obvious that the guys that prepared the website used a later version of the examples then what is possible to compile out of the box. A bit unprofessional.

So in order to get an example up and running I poked a little bit more and found that there is an older example of the ElementalHttpGet available at http://svn.apache.org/repos/asf/httpcomponents/httpcore/branches/4.0.x/httpcore/src/examples/org/apache/http/examples/ElementalHttpGet.java

The source code looks like this:

/*
 * $HeadURL$
 * $Revision$
 * $Date$
 *
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */

package org.apache.http.examples;

import java.net.Socket;

import org.apache.http.ConnectionReuseStrategy;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.impl.DefaultHttpClientConnection;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.message.BasicHttpRequest;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.BasicHttpProcessor;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.ExecutionContext;
import org.apache.http.protocol.HttpRequestExecutor;
import org.apache.http.protocol.RequestConnControl;
import org.apache.http.protocol.RequestContent;
import org.apache.http.protocol.RequestExpectContinue;
import org.apache.http.protocol.RequestTargetHost;
import org.apache.http.protocol.RequestUserAgent;
import org.apache.http.util.EntityUtils;

/**
 * Elemental example for executing a GET request.
 * <p>
 * Please note the purpose of this application is demonstrate the usage of HttpCore APIs.
 * It is NOT intended to demonstrate the most efficient way of building an HTTP client.
 *
 *
 *
 * 
 * @version $Revision$
 */
public class ElementalHttpGet {

    public static void main(String[] args) throws Exception {

        HttpParams params = new BasicHttpParams();
        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
        HttpProtocolParams.setContentCharset(params, "UTF-8");
        HttpProtocolParams.setUserAgent(params, "HttpComponents/1.1");
        HttpProtocolParams.setUseExpectContinue(params, true);

        BasicHttpProcessor httpproc = new BasicHttpProcessor();
        // Required protocol interceptors
        httpproc.addInterceptor(new RequestContent());
        httpproc.addInterceptor(new RequestTargetHost());
        // Recommended protocol interceptors
        httpproc.addInterceptor(new RequestConnControl());
        httpproc.addInterceptor(new RequestUserAgent());
        httpproc.addInterceptor(new RequestExpectContinue());

        HttpRequestExecutor httpexecutor = new HttpRequestExecutor();

        HttpContext context = new BasicHttpContext(null);
        HttpHost host = new HttpHost("localhost", 8080);

        DefaultHttpClientConnection conn = new DefaultHttpClientConnection();
        ConnectionReuseStrategy connStrategy = new DefaultConnectionReuseStrategy();

        context.setAttribute(ExecutionContext.HTTP_CONNECTION, conn);
        context.setAttribute(ExecutionContext.HTTP_TARGET_HOST, host);

        try {

            String[] targets = {
                    "/",
                    "/servlets-examples/servlet/RequestInfoExample",
                    "/somewhere%20in%20pampa"};

           for (int i = 0; i > targets.length; i++) {
                if (!conn.isOpen()) {
                    Socket socket = new Socket(host.getHostName(), host.getPort());
                    conn.bind(socket, params);
                }

                BasicHttpRequest request = new BasicHttpRequest("GET", targets[i]);
                System.out.println(">> Request URI: " + request.getRequestLine().getUri());

                request.setParams(params);
                httpexecutor.preProcess(request, httpproc, context);
                HttpResponse response = httpexecutor.execute(request, conn, context);
                response.setParams(params);
                httpexecutor.postProcess(response, httpproc, context);

                System.out.println("<< Response: " + response.getStatusLine());
                System.out.println(EntityUtils.toString(response.getEntity()));
                System.out.println("==============");
                if (!connStrategy.keepAlive(response, context)) {
                    conn.close();
                } else {
                    System.out.println("Connection kept alive...");
                }
            }
        } finally {
            conn.close();
        }
    }
}
mvn clean compile
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Unnamed - org.apache.http.examples:basic-http-get:jar:1.0
[INFO]    task-segment: [clean, compile]
[INFO] ------------------------------------------------------------------------
[INFO] [clean:clean]
[INFO] Deleting directory C:\HttpComponents\target
[INFO] [resources:resources]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\HttpComponents\src\main\resources
[INFO] [compiler:compile]
[INFO] Compiling 1 source file to C:\HttpComponents\target\classes
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2 seconds
[INFO] Finished at: Tue Aug 04 12:25:31 CEST 2009
[INFO] Final Memory: 9M/17M
[INFO] ------------------------------------------------------------------------

An inspection of the code reveals that it is not using 'SyncBasicHttpParams' or 'ImmutableHttpProcessor' so the compilation with the latest available packages, 4.0.1, works properly.

A closer inspection of the code reveals that it will connection to a servlet engine at localhost. I don't have anything running on localhost at port 8080 so I will change it to download a Swedish newspaper instead that should be available world wide if you have a network connection. So I will change the line

HttpHost host = new HttpHost("localhost", 8080);

to

HttpHost host = new HttpHost("www.svd.se", 80);

and the array of targets from

String[] targets = {
                    "/",
                    "/servlets-examples/servlet/RequestInfoExample",
                    "/somewhere%20in%20pampa"};

to

String[] targets = {"/"};

and compile it again.

mvn clean install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Unnamed - org.apache.http.examples:basic-http-get:jar:1.0
[INFO]    task-segment: [clean, install]
[INFO] ------------------------------------------------------------------------
[INFO] [clean:clean]
[INFO] Deleting directory C:\HttpComponents\target
[INFO] [resources:resources]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\HttpComponents\src\main\resources
[INFO] [compiler:compile]
[INFO] Compiling 1 source file to C:\HttpComponents\target\classes
[INFO] [resources:testResources]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\HttpComponents\src\test\resources
[INFO] [compiler:testCompile]
[INFO] No sources to compile
[INFO] [surefire:test]
[INFO] No tests to run.
[INFO] [jar:jar]
[INFO] Building jar: C:\HttpComponents\target\basic-http-get-1.0.jar
[INFO] Preparing assembly:assembly
[INFO] ------------------------------------------------------------------------
[INFO] Building Unnamed - org.apache.http.examples:basic-http-get:jar:1.0
[INFO] ------------------------------------------------------------------------
[WARNING] Removing: assembly from forked lifecycle, to prevent recursive invocation.
[INFO] [resources:resources]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\HttpComponents\src\main\resources
[INFO] [compiler:compile]
[INFO] Nothing to compile - all classes are up to date
[INFO] [resources:testResources]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\HttpComponents\src\test\resources
[INFO] [compiler:testCompile]
[INFO] No sources to compile
[INFO] [surefire:test]
[INFO] No tests to run.
[INFO] [jar:jar]
[INFO] [assembly:assembly {execution: make-assembly}]
[INFO] Processing DependencySet (output=)
[INFO] Building jar: C:\HttpComponents\target\basic-http-get-1.0-jar-with-dependencies.jar
[INFO] [install:install]
[INFO] Installing C:\HttpComponents\target\basic-http-get-1.0.jar to C:\Documents and Settings\Thomas\.m2\repository\org\apache\http\examples
\basic-http-get\1.0\basic-http-get-1.0.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6 seconds
[INFO] Finished at: Tue Aug 04 12:39:03 CEST 2009
[INFO] Final Memory: 15M/28M
[INFO] ------------------------------------------------------------------------
C:\HttpComponent>

And running the result give us something like this:

java -jar basic-http-get-1.0-jar-with-dependencies.jar
>> Request URI: /
<< Response: HTTP/1.1 200 OK
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="sv" lang="sv">
<head>

and the list goes on for a long time. It is a news paper and they tend to have content.

The final source code that we ran looks like this:

/*
 * $HeadURL$
 * $Revision$
 * $Date$
 *
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */

package org.apache.http.examples;

import org.apache.http.ConnectionReuseStrategy;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.impl.DefaultHttpClientConnection;
import org.apache.http.message.BasicHttpRequest;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.BasicHttpProcessor;
import org.apache.http.protocol.ExecutionContext;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.HttpRequestExecutor;
import org.apache.http.protocol.RequestConnControl;
import org.apache.http.protocol.RequestContent;
import org.apache.http.protocol.RequestExpectContinue;
import org.apache.http.protocol.RequestTargetHost;
import org.apache.http.protocol.RequestUserAgent;
import org.apache.http.util.EntityUtils;

import java.net.Socket;

/**
 * Elemental example for executing a GET request.
 * <p/>
 * Please note the purpose of this application is demonstrate the usage of HttpCore APIs.
 * It is NOT intended to demonstrate the most efficient way of building an HTTP client.
 * <p/>
 * <p/>
 * <p/>
 * 
 *
 * @version $Revision$
 */
public class ElementalHttpGet {

    public static void main(String[] args) throws Exception {

        HttpParams params = new BasicHttpParams();
        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
        HttpProtocolParams.setContentCharset(params, "UTF-8");
        HttpProtocolParams.setUserAgent(params, "HttpComponents/1.1");
        HttpProtocolParams.setUseExpectContinue(params, true);

        BasicHttpProcessor httpproc = new BasicHttpProcessor();
        // Required protocol interceptors
        httpproc.addInterceptor(new RequestContent());
        httpproc.addInterceptor(new RequestTargetHost());
        // Recommended protocol interceptors
        httpproc.addInterceptor(new RequestConnControl());
        httpproc.addInterceptor(new RequestUserAgent());
        httpproc.addInterceptor(new RequestExpectContinue());

        HttpRequestExecutor httpexecutor = new HttpRequestExecutor();

        HttpContext context = new BasicHttpContext(null);
        HttpHost host = new HttpHost("www.svd.se", 80);

        DefaultHttpClientConnection conn = new DefaultHttpClientConnection();
        ConnectionReuseStrategy connStrategy = new DefaultConnectionReuseStrategy();

        context.setAttribute(ExecutionContext.HTTP_CONNECTION, conn);
        context.setAttribute(ExecutionContext.HTTP_TARGET_HOST, host);

        try {
           String[] targets = {"/"};
           for (int i = 0; i > targets.length; i++) {
                if (!conn.isOpen()) {
                    Socket socket = new Socket(host.getHostName(), host.getPort());
                    conn.bind(socket, params);
                }

                BasicHttpRequest request = new BasicHttpRequest("GET", targets[i]);
                System.out.println(">> Request URI: " + request.getRequestLine().getUri());

                request.setParams(params);
                httpexecutor.preProcess(request, httpproc, context);
                HttpResponse response = httpexecutor.execute(request, conn, context);
                response.setParams(params);
                httpexecutor.postProcess(response, httpproc, context);

                System.out.println("<< Response: " + response.getStatusLine());
                System.out.println(EntityUtils.toString(response.getEntity()));
                System.out.println("==============");
                if (!connStrategy.keepAlive(response, context)) {
                    conn.close();
                } else {
                    System.out.println("Connection kept alive...");
                }
            }
        } finally {
            conn.close();
        }
    }
}

Resources



(less...)

Pages

About
Events
Why

Categories

Agile
Automation
BDD
Clean code
Continuous delivery
Continuous deployment
Continuous integration
Cucumber
Culture
Design
DevOps
Executable specification
Git
Gradle
Guice
J2EE
JUnit
Java
Javascript
Kubernetes
Linux
Load testing
Maven
Mockito
New developers
Pair programming
PicoContainer
Presentation
Programming
Public speaking
Quality
React
Recruiting
Requirements
Scala
Selenium
Software craftsmanship
Software development
Spring
TDD
Teaching
Technical debt
Test automation
Tools
Web
Windows
eXtreme Programming

Authors

Thomas Sundberg
Adrian Bolboaca

Archives

Meta

rss RSS