SpringBoot整合CAS服务

Spring Boot整合CAS（Central Authentication Service）服务，你可以使用Spring Security的支持来实现。以下是一个基本的示例来说明如何配置Spring Boot应用程序以使用CAS服务。

1. 添加依赖到你的pom.xml：

<dependencies>
    <!-- Spring Security 依赖 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <!-- CAS Client 依赖 -->
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-cas-client</artifactId>
    </dependency>
</dependencies>

2. 在application.properties或application.yml中配置CAS服务的相关属性：

# CAS服务的URL
cas.server-url-prefix=https://yourcas.server.com/cas
# CAS服务登录成功后的URL
cas.server-login-url=https://yourcas.server.com/cas/login
# 应用的服务首页URL
cas.service-home=http://localhost:8080/
# CAS客户端校验登录成功后的校验URL
cas.validation-url=https://yourcas.server.com/cas/p3/serviceValidate

3. 配置CAS客户端，在一个配置类中添加如下配置：

import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.cas.web.CasAuthenticationEntryPoint;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler;
 
@Configuration
public class CasSecurityConfig extends WebSecurityConfigurerAdapter {
 
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .anyRequest().authenticated()
                .and()
            .exceptionHandling()
                .authenticationEntryPoint(casAuthenticationEntryPoint())
                .and()
            .logout()
                .logoutUrl("/logout")
                .addLogoutHandler(new SecurityContextLogoutHandler())
                .addLogoutHandler(casLogoutHandler())
                .invalidateHttpSession(true)
                .deleteCookies("JSESSIONID")
                .and()
            .csrf()
                .disable();
    }
 
    private CasAuthenticationEntryPoint casAuthenticationEntryPoint() {
        CasAuthenticationEntryPoint entryPoint = new CasAuthenticationEntryPoint();
        entryPoint.setLoginUrl("http