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問題

springcloud 版本為 Finchley.RELEASE

springboot 版本為 2.0.3.RELEASE

現在有需求，/swagger-ui.html 頁面需要添加登錄認證，但是本來的接口不需要登錄認證

升級springboot之前的做法是直接在application.yml 文件中添加以下配置：

									security:

									 basic:

									  enabled: true # 啟用SpringSecurity的安全配置項

									  path: /swagger-ui.html

									 user:

									  name: aijianzi # 認證用戶名

									  password: course # 認證密碼

									  role:    # 授權角色

									  - USER

升級后這種配置就出錯了，連編譯都出錯，如下圖：

解決過程

查找源代碼，找到如下：

來自：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.0-Migration-Guide

Security
Spring Boot 2 greatly simplifies the default security configuration and makes adding custom security easy. Rather than having several security-related auto-configurations, Spring Boot now has a single behavior that backs off as soon as you add your own WebSecurityConfigurerAdapter.

You are affected if you were using any of the following properties:

security.basic.authorize-mode
security.basic.enabled
security.basic.path
security.basic.realm
security.enable-csrf
security.headers.cache
security.headers.content-security-policy
security.headers.content-security-policy-mode
security.headers.content-type
security.headers.frame
security.headers.hsts
security.headers.xss
security.ignored
security.require-ssl
security.sessions

翻譯：Spring Boot 2極大地簡化了默認的安全配置，并使添加定制安全性變得更加容易。Spring Boot并沒有使用幾個與安全相關的自動配置，而是在添加自己的WebSecurityConfigurerAdapter時就有了一個單獨的行為。如果您使用以下屬性，您將受到影響

再找到：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-Security-2.0

Security Auto-configuration
Spring Boot 2.0 does not provide separate auto-configuration for user-defined endpoints and actuator endpoints. When Spring Security is on the classpath, the auto-configuration secures all endpoints by default. It adds the @EnableWebSecurity annotation and relies on Spring Security's content-negotiation strategy to determine whether to use httpBasic or formLogin. A user with a a default username and generated password is added, which can be used to login.

翻譯：Spring Boot 2.0沒有為用戶定義的端點和執行器端點提供單獨的自動配置。當Spring Security在類路徑上時，自動配置默認為所有端點。它添加了@EnableWebSecurity 注釋，并依賴于Spring Security的內容協商策略來決定是否使用httpBasic或formLogin。添加了一個默認用戶名和生成密碼的用戶，這可以用來登錄。

解決

對于不同的URL，安全性是不同的，關鍵在于重載WebSecurityConfigurerAdapter 類的configure(HttpSecurity) 方法。具體可以參考以上的兩個鏈接

我的完整實現如下：

1、pom.xml 中添加依賴：

									<dependency>

									  <groupId>org.springframework.boot</groupId>

									  <artifactId>spring-boot-starter-security</artifactId>

									</dependency>

2、application.yml 文件中配置登錄用戶名和密碼（如果只到這里，那么所有的請求都會被攔截）

									spring:

									 security:

									 user:

									  name: admin

									  password: admin

3、添加自定義的配置類，注解@Configuration @EnableWebSecurity

									import org.springframework.context.annotation.Configuration;

									import org.springframework.security.config.annotation.web.builders.HttpSecurity;

									import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;

									import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

									/**

									 * @author jiashubing

									 * @since 2018/7/16

									 */

									@Configuration

									@EnableWebSecurity

									public class ActuatorWebSecurityConfigurationAdapter extends WebSecurityConfigurerAdapter {

									  @Override

									  protected void configure(HttpSecurity http) throws Exception {

									    http

									        .authorizeRequests()

									        //普通的接口不需要校驗

									        .antMatchers("/courseApi/**").permitAll()

									        // swagger頁面需要添加登錄校驗

									        .antMatchers("/swagger-ui.html").authenticated()

									        .and()

									        .formLogin();

									  }

									}