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如何解决springboot2集成oauth2踩坑的问题，相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。
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刚开始用springboot1.5集成oauth3没问题，现在升级成springboot2.1踩了不少坑，下面列举下：
Possible CSRF detected - state parameter was required but no state could be found
客户端代码
@EnableOAuth3Sso
@Configuration
public class UiSecurityConfig extends WebSecurityConfigurerAdapter {
@Override
public void configure(HttpSecurity http) throws Exception {
http.antMatcher("/**")
.authorizeRequests()
.antMatchers("/", "/login**")
.permitAll()
.anyRequest()
.authenticated();
}
}在获取到code后一直停留在登陆页面上 
在网上找了下有以下方案： 1、配置server.servlet.session.cookie.name=UPSESSIONID 但是这个试了没效果 2、设置code策略authCodeProvider.setStateMandatory(false); 这里改动了很多代码
@Configuration
@EnableOAuth3Client
@EnableGlobalMethodSecurity(prePostEnabled=true)//开启@PreAuthorize注解
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private OAuth3ClientContext oauth3ClientContext;
@Override
protected void configure(HttpSecurity http) throws Exception {
// // @formatter:off
http.authorizeRequests()
.anyRequest().authenticated().and()
.formLogin().loginPage("/login").permitAll().and()
.exceptionHandling().and()
.logout().logoutSuccessUrl("/login").permitAll()
.and().headers().frameOptions().sameOrigin()
.and().csrf()
.csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse()).and()
.addFilterBefore(ssoFilter(), BasicAuthenticationFilter.class);//这里需要配置在basic前
}
@Bean
public FilterRegistrationBean oauth3ClientFilterRegistration(OAuth3ClientContextFilter filter) {
FilterRegistrationBean registration = new FilterRegistrationBean();
registration.setFilter(filter);
registration.setOrder(-100);
return registration;
}
@Bean
@ConfigurationProperties("security.oauth3")
public ClientResources trina() {
return new ClientResources();
}
private Filter ssoFilter() {
CompositeFilter filter = new CompositeFilter();
List filters = new ArrayList();
filters.add(ssoFilter(trina(), "/login"));
filter.setFilters(filters);
return filter;
}
private Filter ssoFilter(ClientResources client, String path) {
OAuth3ClientAuthenticationProcessingFilter oAuth3ClientAuthenticationFilter = new OAuth3ClientAuthenticationProcessingFilter(
path);
OAuth3RestTemplate oAuth3RestTemplate = new OAuth3RestTemplate(client.getClient(), this.oauth3ClientContext);
oAuth3ClientAuthenticationFilter.setRestTemplate(oAuth3RestTemplate);
AuthorizationCodeAccessTokenProvider authCodeProvider = new AuthorizationCodeAccessTokenProvider();
authCodeProvider.setStateMandatory(false);
AccessTokenProviderChain provider = new AccessTokenProviderChain(
Arrays.asList(authCodeProvider));
oAuth3RestTemplate.setAccessTokenProvider(provider);
UserInfoTokenServices tokenServices = new UserInfoTokenServices(client.getResource().getUserInfoUri(),
client.getClient().getClientId());
tokenServices.setRestTemplate(oAuth3RestTemplate);
oAuth3ClientAuthenticationFilter.setTokenServices(tokenServices);
return oAuth3ClientAuthenticationFilter;
}
}
class ClientResources {
@NestedConfigurationProperty
private AuthorizationCodeResourceDetails client = new AuthorizationCodeResourceDetails();
@NestedConfigurationProperty
private ResourceServerProperties resource = new ResourceServerProperties();
public AuthorizationCodeResourceDetails getClient() {
return client;
}
public ResourceServerProperties getResource() {
return resource;
}
} 修改后访问呢连接，登陆后成功跳转到指定页面。
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