spring-security Getting started with spring-security Spring Securitiy to protect REST API endpoints

Example

Add below entries in pom.xml.

<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-web</artifactId>
    <version>3.1.0.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-config</artifactId>
    <version>3.1.0.RELEASE</version>
</dependency>

Important for Spring version greater than 3.1:

Bean creation error for org.springframework.security.filterChains comes when you are using Spring version higher than 3.1 and have not added dependencies manually for spring-aop, spring-jdbc, spring-tx and spring-expressions in your pom.xml.

Add below entries in Spring context. We want to protect two REST endpoints (helloworld & goodbye). Adjust XSD version according to Spring version.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:security="http://www.springframework.org/schema/security"
   xmlns:context="http://www.springframework.org/schema/context"
   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
                       http://www.springframework.org/schema/security
                       http://www.springframework.org/schema/security/spring-security-3.1.xsd">
                               
    <security:http auto-config='true' create-session="never">
        <security:intercept-url pattern="/helloworld/**" access="ROLE_USER" />
        <security:intercept-url pattern="/goodbye/**" access="ROLE_ADMIN" />
        <security:intercept-url pattern="/**" access="IS_AUTHENTICATED_ANONYMOUSLY" />
        <security:http-basic />
    </security:http>

    <security:authentication-manager>
        <security:authentication-provider>
            <security:user-service>
                <security:user name="username1" password="password1"
                    authorities="ROLE_USER" />
                <security:user name="username2" password="password2"
                    authorities="ROLE_ADMIN" />
            </security:user-service>
        </security:authentication-provider>
    </security:authentication-manager>
</beans>

Add below entries in web.xml.

<!-- Spring security-->
<filter>
    <filter-name>springSecurityFilterChain</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
    <filter-name>springSecurityFilterChain</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:security-context.xml</param-value>
</context-param>