Spring WS - Basic Authentication Example
Table of Contents
Basic Authentication (BA) is a method for a HTTP client to provide a user name and password when making a request. There is no confidentiality protection for the transmitted credentials. therefore it is strongly advised to use it in conjunction with HTTPS.
The credentials are provided as a HTTP header field called 'Authorization'
which is constructed as follows:
The username and password are combined with a single colon.
codenotofound:p455w0rd
The resulting string is encoded into an octet sequence and then Base64 encoded. You can use an online Base64 decoder to decode below value.
Y29kZW5vdGZvdW5kOnA0NTV3MHJk
The authorization method and a space (
"Basic "
) are then put before the encoded string.Basic Y29kZW5vdGZvdW5kOnA0NTV3MHJk
Instead of writing custom code to create and check the HTTP authorization header we will configure Spring WS and Spring Boot to do the work for us. The below example illustrates how a client and server can be configured to apply basic access authentication using Spring-WS, Spring Boot, and Maven.
General Project Setup #
Tools used:
- Spring-WS 2.4
- Spring Security 4.2
- HttpClient 4.5
- Spring Boot 1.5
- Maven 3.5
The setup of the sample is based on a previous Spring WS tutorial in which we have swapped out the basic helloworld.wsdl
for a more generic ticketagent.wsdl
from the W3C WSDL 1.1 specification.
There are two implementations of the WebServiceMessageSender
interface for sending messages via HTTP. The default implementation is the HttpUrlConnectionMessageSender
, which uses the facilities provided by Java itself. The alternative is the HttpComponentsMessageSender
, which uses the Apache HttpComponents HttpClient.
We will use the HttpComponentsMessageSender
implementation in below example as it contains more advanced and easy-to-use functionality. On GitHub, however, we have also added a basic authentication example that uses the HttpUrlConnectionMessageSender implementation in case a dependency on the HttpClient
is not desired.
In order to use the HttpComponentsMessageSender
implementation, we need to add the Apache httpclient
dependency to the Maven POM file.
In addition we will need the spring-boot-starter-security
Spring Boot starter dependency for the server setup.
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.codenotfound</groupId>
<artifactId>spring-ws-basic-authentication</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>spring-ws-basic-authentication</name>
<description>Spring WS - Basic Authentication Example</description>
<url>https://www.codenotfound.com/spring-ws-basic-authentication-example.html</url>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
</parent>
<properties>
<java.version>1.8</java.version>
<httpclient.version>4.5.4</httpclient.version>
<maven-jaxb2-plugin.version>0.13.3</maven-jaxb2-plugin.version>
</properties>
<dependencies>
<!-- spring-boot -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web-services</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<!-- httpclient -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>${httpclient.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<!-- spring-boot-maven-plugin -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!-- maven-jaxb2-plugin -->
<plugin>
<groupId>org.jvnet.jaxb2.maven2</groupId>
<artifactId>maven-jaxb2-plugin</artifactId>
<version>${maven-jaxb2-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<configuration>
<schemaDirectory>${project.basedir}/src/main/resources/wsdl</schemaDirectory>
<schemaIncludes>
<include>*.wsdl</include>
</schemaIncludes>
</configuration>
</plugin>
</plugins>
</build>
</project>
Setup Client Basic Authentication #
In this example, we use the Apache HTTP Client, as it comes with built-in support for setting the basic authentication header. We update the ClientConfig
class with a bean that creates an HttpComponentsMessageSender
on which we set a UsernamePasswordCredentials
bean. This bean will automatically create the HTTP basic authentication header.
The @Value
annotation is used to inject the name
and password
values from the application.yml
properties file shown below. These values are then set on the UsernamePasswordCredentials
bean.
client:
default-uri: http://localhost:9090/codenotfound/ws/helloworld
user:
name: codenotfound
password: p455w0rd
We finish by setting the HttpComponentsMessageSender
on our WebServiceTemplate
.
package com.codenotfound.ws.client;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.oxm.jaxb.Jaxb2Marshaller;
import org.springframework.ws.client.core.WebServiceTemplate;
import org.springframework.ws.transport.http.HttpComponentsMessageSender;
@Configuration
public class ClientConfig {
@Value("${client.default-uri}")
private String defaultUri;
@Value("${client.user.name}")
private String userName;
@Value("${client.user.password}")
private String userPassword;
@Bean
Jaxb2Marshaller jaxb2Marshaller() {
Jaxb2Marshaller jaxb2Marshaller = new Jaxb2Marshaller();
jaxb2Marshaller.setContextPath("org.example.ticketagent");
return jaxb2Marshaller;
}
@Bean
public WebServiceTemplate webServiceTemplate() {
WebServiceTemplate webServiceTemplate = new WebServiceTemplate();
webServiceTemplate.setMarshaller(jaxb2Marshaller());
webServiceTemplate.setUnmarshaller(jaxb2Marshaller());
webServiceTemplate.setDefaultUri(defaultUri);
// set a HttpComponentsMessageSender which provides support for basic authentication
webServiceTemplate.setMessageSender(httpComponentsMessageSender());
return webServiceTemplate;
}
@Bean
public HttpComponentsMessageSender httpComponentsMessageSender() {
HttpComponentsMessageSender httpComponentsMessageSender = new HttpComponentsMessageSender();
// set the basic authorization credentials
httpComponentsMessageSender.setCredentials(usernamePasswordCredentials());
return httpComponentsMessageSender;
}
@Bean
public UsernamePasswordCredentials usernamePasswordCredentials() {
// pass the user name and password to be used
return new UsernamePasswordCredentials(userName, userPassword);
}
}
Setup Server Basic Authentication #
The Spring Boot security starter that was added to our Maven setup has a dependency on Spring Security. If Spring Security is on the classpath then web applications will automatically be secured with HTTP basic authentication on all HTTP endpoints. In other words our, TicketAgentEndpoint
is now secured with basic auth.
The default user that will be configured has as name 'user'
. The password is randomly generated at startup (it is displayed in the startup logs).
Typically you will want to configure a custom value for the user and password, in order to do this you need to set the corresponding Spring Boot security properties (look for the # SECURITY
heading) in the application properties file.
In this example we set the 'user'
to "codenotfound"
and the 'password'
to "p455w0rd"
in the application.yml
properties using the YAML variant as shown below.
security:
user:
name: codenotfound
password: p455w0rd
Testing the Basic Authentication Configuration #
In order to test the configuration we just run the SpringWsApplicationTests
unit test case by issuing the following Maven command.
mvn test
The test case will run successfully as basic authentication is correctly configured on both sides. By default, the basic authentication header is not logged but if you want you can add some custom code in order to have Spring-WS log all the client HTTP headers.
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.9.RELEASE)
21:06:58.016 [main] INFO c.c.ws.SpringWsApplicationTests - Starting SpringWsApplicationTests on cnf-pc with PID 2176 (started by CodeNotFound in c:\code\spring-ws\spring-ws-basic-authentication)
21:06:58.018 [main] INFO c.c.ws.SpringWsApplicationTests - No active profile set, falling back to default profiles: default
21:07:01.275 [main] INFO c.c.ws.SpringWsApplicationTests - Started SpringWsApplicationTests in 3.568 seconds (JVM running for 4.234)
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 4.039 sec - in com.codenotfound.ws.SpringWsApplicationTests
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.454 s
[INFO] Finished at: 2017-04-29T21:07:01+02:00
[INFO] Final Memory: 27M/217M
[INFO] ------------------------------------------------------------------------
Now change the password in the application.yml
file to a different value and rerun the test case. This time the test case will fail as a '401 Unauthorized'
is returned by our server.
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.9.RELEASE)
21:52:41.786 [main] INFO c.c.ws.SpringWsApplicationTests - Starting SpringWsApplicationTests on cnf-pc with PID 5908 (started by CodeNotFound in c:\code\spring-ws\spring-ws-basic-authentication)
21:52:41.789 [main] INFO c.c.ws.SpringWsApplicationTests - No active profile set, falling back to default profiles: default
21:52:45.159 [main] INFO c.c.ws.SpringWsApplicationTests - Started SpringWsApplicationTests in 3.666 seconds (JVM running for 4.281)
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 4.004 sec <<< FAILURE! - in com.codenotfound.ws.SpringWsApplicationTests
testListFlights(com.codenotfound.ws.SpringWsApplicationTests) Time elapsed: 0.263 sec <<< ERROR!
org.springframework.ws.client.WebServiceTransportException: [401]
at org.springframework.ws.client.core.WebServiceTemplate.handleError(WebServiceTemplate.java:699)
at org.springframework.ws.client.core.WebServiceTemplate.doSendAndReceive(WebServiceTemplate.java:609)
at org.springframework.ws.client.core.WebServiceTemplate.sendAndReceive(WebServiceTemplate.java:555)
at org.springframework.ws.client.core.WebServiceTemplate.marshalSendAndReceive(WebServiceTemplate.java:390)
at org.springframework.ws.client.core.WebServiceTemplate.marshalSendAndReceive(WebServiceTemplate.java:383)
at org.springframework.ws.client.core.WebServiceTemplate.marshalSendAndReceive(WebServiceTemplate.java:373)
at com.codenotfound.ws.client.TicketAgentClient.listFlights(TicketAgentClient.java:30)
at com.codenotfound.ws.SpringWsApplicationTests.testListFlights(SpringWsApplicationTests.java:26)
Results :
Tests in error:
SpringWsApplicationTests.testListFlights:26 ╗ WebServiceTransport [401]
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.460 s
[INFO] Finished at: 2017-04-29T21:52:45+02:00
[INFO] Final Memory: 18M/227M
[INFO] ------------------------------------------------------------------------
Setting up basic authentication on the client side using Spring WS is pretty simple when using the Apache client. The server side is even easier when running on Spring Boot.
Drop me a line if you found the example useful. Or let me know in case of questions.