bonsoir à tous,

je suis débutante en développement web et j'utilise le frameworks spring boot .
lorsque j'exécute mon appli j'obtiens l'erreur suivante :
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org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springSecurityFilterChain' defined in class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.servlet.Filter]: Factory method 'springSecurityFilterChain' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/security/ldap/userdetails/LdapAuthoritiesPopulator
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:587) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1250) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1099) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:304) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868) ~[spring-context-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:388) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1246) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1234) [spring-boot-2.0.0.RELEASE.jar:2.0.0.RELEASE]
	at com.example.demo.Demo1Application.main(Demo1Application.java:48) [classes/:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_73]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_73]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_73]
	at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_73]
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.0.RELEASE.jar:2.0.0.RELEASE]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.servlet.Filter]: Factory method 'springSecurityFilterChain' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/security/ldap/userdetails/LdapAuthoritiesPopulator
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:579) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	... 25 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/springframework/security/ldap/userdetails/LdapAuthoritiesPopulator
	at org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder.ldapAuthentication(AuthenticationManagerBuilder.java:206) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at com.example.demo.Config.configure(Config.java:66) ~[classes/:na]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.authenticationManager(WebSecurityConfigurerAdapter.java:265) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.getHttp(WebSecurityConfigurerAdapter.java:201) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.init(WebSecurityConfigurerAdapter.java:321) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.init(WebSecurityConfigurerAdapter.java:92) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at com.example.demo.Config$$EnhancerBySpringCGLIB$$496b2b34.init(<generated>) ~[classes/:na]
	at org.springframework.security.config.annotation.AbstractConfiguredSecurityBuilder.init(AbstractConfiguredSecurityBuilder.java:371) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at org.springframework.security.config.annotation.AbstractConfiguredSecurityBuilder.doBuild(AbstractConfiguredSecurityBuilder.java:325) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at org.springframework.security.config.annotation.AbstractSecurityBuilder.build(AbstractSecurityBuilder.java:41) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.springSecurityFilterChain(WebSecurityConfiguration.java:104) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerBySpringCGLIB$$dc3851e6.CGLIB$springSecurityFilterChain$3(<generated>) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerBySpringCGLIB$$dc3851e6$$FastClassBySpringCGLIB$$31db615c.invoke(<generated>) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:361) ~[spring-context-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$$EnhancerBySpringCGLIB$$dc3851e6.springSecurityFilterChain(<generated>) ~[spring-security-config-5.0.3.RELEASE.jar:5.0.3.RELEASE]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_73]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_73]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_73]
	at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_73]
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
	... 26 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.security.ldap.userdetails.LdapAuthoritiesPopulator
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_73]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_73]
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[na:1.8.0_73]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_73]
	... 47 common frames omitted
mon code:
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@Configuration
//@EnableWebSecurity
public class Config extends WebSecurityConfigurerAdapter{
 
 
 
        @Value("${ldap.urls}")
	private String ldapUrls;
 
	@Value("${ldap.base.dn}")
	private String ldapBaseDn;
 
 
 
 
 
	@Value("${ldap.user.dn.pattern}")
	private String ldapUserDnPattern;
 
	@Value("${ldap.enabled}")
	private String ldapEnabled;
 
	@Override
	protected void configure(HttpSecurity http) throws Exception {
        http
        	.authorizeRequests()
        		.antMatchers("/login**").permitAll()
        		.antMatchers("/profile/**").fullyAuthenticated()
            	.antMatchers("/").permitAll()
            	.and()
            .formLogin()
            	.loginPage("/login")
            	.failureUrl("/login?error")
            	.permitAll()
            	.and()
            .logout()
            	.invalidateHttpSession(true)
            	.deleteCookies("JSESSIONID")
            	.permitAll();
	}
 
 
	@Override
	protected void configure(AuthenticationManagerBuilder auth) throws Exception {
 
 
			auth
				.ldapAuthentication()
				.contextSource()
					.url(ldapUrls + ldapBaseDn)
 
					.and()
						.userDnPatterns(ldapUserDnPattern)
                                .passwordCompare().passwordEncoder(new LdapShaPasswordEncoder())
                    .passwordAttribute("userPassword");
 
 
 
    }
                }
application.properties
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ldap.enabled = true
 
####### LDAP ##############
ldap.urls= ldap://localhost:10389/
ldap.base.dn= dc=example,dc=com
 
ldap.user.dn.pattern = uid={0}