詳解Spring Boot 使用Spring security 集成CAS

1.創建工程

創建Maven工程：springboot-security-cas

2.加入依賴

創建工程後，打開pom.xml，在pom.xml中加入以下內容：

<parent> 
    <groupId>org.springframework.boot</groupId> 
    <artifactId>spring-boot-starter-parent</artifactId> 
    <version>1.4.3.RELEASE</version> 
  </parent> 
  <properties> 
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
    <java.version>1.8</java.version> 
  </properties> 
  <dependencies> 
    <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter</artifactId> 
    </dependency> 
    <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-web</artifactId> 
    </dependency> 
    <!-- security starter Poms --> 
    <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-security</artifactId> 
    </dependency> 
    <!-- security 對CAS支持 --> 
    <dependency> 
      <groupId>org.springframework.security</groupId> 
      <artifactId>spring-security-cas</artifactId> 
    </dependency> 
    <!-- security taglibs --> 
    <dependency> 
      <groupId>org.springframework.security</groupId> 
      <artifactId>spring-security-taglibs</artifactId> 
    </dependency> 
    <!-- 熱加載 --> 
    <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-devtools</artifactId> 
      <optional>true</optional> 
    </dependency> 
    <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-configuration-processor</artifactId> 
      <optional>true</optional> 
    </dependency> 
  </dependencies> 
  <build> 
    <plugins> 
      <plugin> 
        <groupId>org.springframework.boot</groupId> 
        <artifactId>spring-boot-maven-plugin</artifactId> 
      </plugin> 
    </plugins> 
  </build> 

3.創建application.properties

創建application.properties文件，加入以下內容：

#CAS服務地址 
cas.server.host.url=http://localhost:8081/cas 
#CAS服務登錄地址 
cas.server.host.login_url=${cas.server.host.url}/login 
#CAS服務登出地址 
cas.server.host.logout_url=${cas.server.host.url}/logout?service=${app.server.host.url} 
#應用訪問地址 
app.server.host.url=http://localhost:8080 
#應用登錄地址 
app.login.url=/login 
#應用登出地址 
app.logout.url=/logout 

4.創建入口啟動類（MainConfig）

創建入口啟動類MainConfig，完整代碼如下：

package com.chengli.springboot; 
 
import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 
import org.springframework.security.access.prepost.PreAuthorize; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RestController; 
 
@RestController 
@SpringBootApplication 
public class MainConfig { 
  public static void main(String[] args) { 
    SpringApplication.run(MainConfig.class, args); 
  } 
 
  @RequestMapping("/") 
  public String index() { 
    return "訪問了首頁哦"; 
  } 
 
  @RequestMapping("/hello") 
  public String hello() { 
    return "不驗證哦"; 
  } 
 
  @PreAuthorize("hasAuthority('TEST')")//有TEST權限的才能訪問 
  @RequestMapping("/security") 
  public String security() { 
    return "hello world security"; 
  } 
 
  @PreAuthorize("hasAuthority('ADMIN')")//必須要有ADMIN權限的才能訪問 
  @RequestMapping("/authorize") 
  public String authorize() { 
    return "有權限訪問"; 
  } 
   
  /**這裡注意的是，TEST與ADMIN只是權限編碼，可以自己定義一套規則，根據實際情況即可*/ 
} 

5.創建Security配置類（SecurityConfig）

創建Security配置類SecurityConfig，完整代碼如下：

package com.chengli.springboot.security; 
 
import org.jasig.cas.client.session.SingleSignOutFilter; 
import org.jasig.cas.client.validation.Cas20ServiceTicketValidator; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.context.annotation.Bean; 
import org.springframework.context.annotation.Configuration; 
import org.springframework.security.cas.ServiceProperties; 
import org.springframework.security.cas.authentication.CasAssertionAuthenticationToken; 
import org.springframework.security.cas.authentication.CasAuthenticationProvider; 
import org.springframework.security.cas.web.CasAuthenticationEntryPoint; 
import org.springframework.security.cas.web.CasAuthenticationFilter; 
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder; 
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity; 
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; 
import org.springframework.security.core.userdetails.AuthenticationUserDetailsService; 
import org.springframework.security.web.authentication.logout.LogoutFilter; 
import org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler; 
 
import com.chengli.springboot.custom.CustomUserDetailsService; 
import com.chengli.springboot.properties.CasProperties; 
 
@Configuration 
@EnableWebSecurity //啟用web權限 
@EnableGlobalMethodSecurity(prePostEnabled = true) //啟用方法驗證 
public class SecurityConfig extends WebSecurityConfigurerAdapter { 
  @Autowired 
  private CasProperties casProperties; 
   
  /**定義認證用戶信息獲取來源，密碼校驗規則等*/ 
  @Override 
  protected void configure(AuthenticationManagerBuilder auth) throws Exception { 
    super.configure(auth); 
    auth.authenticationProvider(casAuthenticationProvider()); 
    //inMemoryAuthentication 從內存中獲取 
    //auth.inMemoryAuthentication().withUser("chengli").password("123456").roles("USER") 
    //.and().withUser("admin").password("123456").roles("ADMIN"); 
     
    //jdbcAuthentication從數據庫中獲取，但是默認是以security提供的表結構 
    //usersByUsernameQuery 指定查詢用戶SQL 
    //authoritiesByUsernameQuery 指定查詢權限SQL 
    //auth.jdbcAuthentication().dataSource(dataSource).usersByUsernameQuery(query).authoritiesByUsernameQuery(query); 
     
    //注入userDetailsService，需要實現userDetailsService接口 
    //auth.userDetailsService(userDetailsService); 
  } 
   
  /**定義安全策略*/ 
  @Override 
  protected void configure(HttpSecurity http) throws Exception { 
    http.authorizeRequests()//配置安全策略 
      //.antMatchers("/","/hello").permitAll()//定義/請求不需要驗證 
      .anyRequest().authenticated()//其余的所有請求都需要驗證 
      .and() 
    .logout() 
      .permitAll()//定義logout不需要驗證 
      .and() 
    .formLogin();//使用form表單登錄 
     
    http.exceptionHandling().authenticationEntryPoint(casAuthenticationEntryPoint()) 
      .and() 
      .addFilter(casAuthenticationFilter()) 
      .addFilterBefore(casLogoutFilter(), LogoutFilter.class) 
      .addFilterBefore(singleSignOutFilter(), CasAuthenticationFilter.class); 
     
    //http.csrf().disable(); //禁用CSRF 
  } 
   
  /**認證的入口*/ 
  @Bean 
  public CasAuthenticationEntryPoint casAuthenticationEntryPoint() { 
    CasAuthenticationEntryPoint casAuthenticationEntryPoint = new CasAuthenticationEntryPoint(); 
    casAuthenticationEntryPoint.setLoginUrl(casProperties.getCasServerLoginUrl()); 
    casAuthenticationEntryPoint.setServiceProperties(serviceProperties()); 
    return casAuthenticationEntryPoint; 
  } 
   
  /**指定service相關信息*/ 
  @Bean 
  public ServiceProperties serviceProperties() { 
    ServiceProperties serviceProperties = new ServiceProperties(); 
    serviceProperties.setService(casProperties.getAppServerUrl() + casProperties.getAppLoginUrl()); 
    serviceProperties.setAuthenticateAllArtifacts(true); 
    return serviceProperties; 
  } 
   
  /**CAS認證過濾器*/ 
  @Bean 
  public CasAuthenticationFilter casAuthenticationFilter() throws Exception { 
    CasAuthenticationFilter casAuthenticationFilter = new CasAuthenticationFilter(); 
    casAuthenticationFilter.setAuthenticationManager(authenticationManager()); 
    casAuthenticationFilter.setFilterProcessesUrl(casProperties.getAppLoginUrl()); 
    return casAuthenticationFilter; 
  } 
   
  /**cas 認證 Provider*/ 
  @Bean 
  public CasAuthenticationProvider casAuthenticationProvider() { 
    CasAuthenticationProvider casAuthenticationProvider = new CasAuthenticationProvider(); 
    casAuthenticationProvider.setAuthenticationUserDetailsService(customUserDetailsService()); 
    //casAuthenticationProvider.setUserDetailsService(customUserDetailsService()); //這裡只是接口類型，實現的接口不一樣，都可以的。 
    casAuthenticationProvider.setServiceProperties(serviceProperties()); 
    casAuthenticationProvider.setTicketValidator(cas20ServiceTicketValidator()); 
    casAuthenticationProvider.setKey("casAuthenticationProviderKey"); 
    return casAuthenticationProvider; 
  } 
   
  /*@Bean 
  public UserDetailsService customUserDetailsService(){ 
    return new CustomUserDetailsService(); 
  }*/ 
   
  /**用戶自定義的AuthenticationUserDetailsService*/ 
  @Bean 
  public AuthenticationUserDetailsService<CasAssertionAuthenticationToken> customUserDetailsService(){ 
    return new CustomUserDetailsService(); 
  } 
   
  @Bean 
  public Cas20ServiceTicketValidator cas20ServiceTicketValidator() { 
    return new Cas20ServiceTicketValidator(casProperties.getCasServerUrl()); 
  } 
   
  /**單點登出過濾器*/ 
  @Bean 
  public SingleSignOutFilter singleSignOutFilter() { 
    SingleSignOutFilter singleSignOutFilter = new SingleSignOutFilter(); 
    singleSignOutFilter.setCasServerUrlPrefix(casProperties.getCasServerUrl()); 
    singleSignOutFilter.setIgnoreInitConfiguration(true); 
    return singleSignOutFilter; 
  } 
   
  /**請求單點退出過濾器*/ 
  @Bean 
  public LogoutFilter casLogoutFilter() { 
    LogoutFilter logoutFilter = new LogoutFilter(casProperties.getCasServerLogoutUrl(), new SecurityContextLogoutHandler()); 
    logoutFilter.setFilterProcessesUrl(casProperties.getAppLogoutUrl()); 
    return logoutFilter; 
  } 
} 

6.用戶自定義類

（1）定義CasProperties，用於將properties文件指定的內容注入以方便使用，這裡不注入也是可以的，可以獲取Spring 當前的環境，代碼如下：

package com.chengli.springboot.properties; 
import org.springframework.beans.factory.annotation.Value; 
import org.springframework.stereotype.Component; 
 
/** 
 * CAS的配置參數 
 * @author ChengLi 
 */ 
@Component 
public class CasProperties { 
  @Value("${cas.server.host.url}") 
  private String casServerUrl; 
 
  @Value("${cas.server.host.login_url}") 
  private String casServerLoginUrl; 
 
  @Value("${cas.server.host.logout_url}") 
  private String casServerLogoutUrl; 
 
  @Value("${app.server.host.url}") 
  private String appServerUrl; 
 
  @Value("${app.login.url}") 
  private String appLoginUrl; 
 
  @Value("${app.logout.url}") 
  private String appLogoutUrl; 
......省略 getters setters 方法 
} 

（2）定義CustomUserDetailsService類，代碼如下：

package com.chengli.springboot.custom; 
 
import java.util.HashSet; 
import java.util.Set; 
 
import org.springframework.security.cas.authentication.CasAssertionAuthenticationToken; 
import org.springframework.security.core.userdetails.AuthenticationUserDetailsService; 
import org.springframework.security.core.userdetails.UserDetails; 
import org.springframework.security.core.userdetails.UsernameNotFoundException; 
 
/** 
 * 用於加載用戶信息 實現UserDetailsService接口，或者實現AuthenticationUserDetailsService接口 
 * @author ChengLi 
 * 
 */ 
public class CustomUserDetailsService /* 
  //實現UserDetailsService接口，實現loadUserByUsername方法 
  implements UserDetailsService { 
  @Override 
  public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { 
    System.out.println("當前的用戶名是："+username); 
    //這裡我為了方便，就直接返回一個用戶信息，實際當中這裡修改為查詢數據庫或者調用服務什麼的來獲取用戶信息 
    UserInfo userInfo = new UserInfo(); 
    userInfo.setUsername("admin"); 
    userInfo.setName("admin"); 
    Set<AuthorityInfo> authorities = new HashSet<AuthorityInfo>(); 
    AuthorityInfo authorityInfo = new AuthorityInfo("TEST"); 
    authorities.add(authorityInfo); 
    userInfo.setAuthorities(authorities); 
    return userInfo; 
  }*/ 
   
   
  //實現AuthenticationUserDetailsService，實現loadUserDetails方法 
  implements AuthenticationUserDetailsService<CasAssertionAuthenticationToken> { 
 
  @Override 
  public UserDetails loadUserDetails(CasAssertionAuthenticationToken token) throws UsernameNotFoundException { 
    System.out.println("當前的用戶名是："+token.getName()); 
    /*這裡我為了方便，就直接返回一個用戶信息，實際當中這裡修改為查詢數據庫或者調用服務什麼的來獲取用戶信息*/ 
    UserInfo userInfo = new UserInfo(); 
    userInfo.setUsername("admin"); 
    userInfo.setName("admin"); 
    Set<AuthorityInfo> authorities = new HashSet<AuthorityInfo>(); 
    AuthorityInfo authorityInfo = new AuthorityInfo("TEST"); 
    authorities.add(authorityInfo); 
    userInfo.setAuthorities(authorities); 
    return userInfo; 
  } 
 
} 

（3）定義AuthorityInfo類，用於加載當前登錄用戶的權限信息，實現GrantedAuthority接口，代碼如下：

package com.chengli.springboot.custom; 
 
import org.springframework.security.core.GrantedAuthority; 
 
/** 
 * 權限信息 
 * 
 * @author ChengLi 
 * 
 */ 
public class AuthorityInfo implements GrantedAuthority { 
  private static final long serialVersionUID = -175781100474818800L; 
 
  /** 
   * 權限CODE 
   */ 
  private String authority; 
 
  public AuthorityInfo(String authority) { 
    this.authority = authority; 
  } 
 
  @Override 
  public String getAuthority() { 
    return authority; 
  } 
 
  public void setAuthority(String authority) { 
    this.authority = authority; 
  } 
 
} 

（4）定義UserInfo類，用於加載當前用戶信息，實現UserDetails接口，代碼如下：

package com.chengli.springboot.custom; 
 
import java.util.Collection; 
import java.util.HashSet; 
import java.util.Set; 
 
import org.springframework.security.core.GrantedAuthority; 
import org.springframework.security.core.userdetails.UserDetails; 
 
/** 
 * 用戶信息 
 * @、這裡我寫了幾個較為常用的字段，id，name，username，password，可以根據實際的情況自己增加 
 * @author ChengLi 
 * 
 */ 
public class UserInfo implements UserDetails { 
  private static final long serialVersionUID = -1041327031937199938L; 
 
  /** 
   * 用戶ID 
   */ 
  private Long id; 
 
  /** 
   * 用戶名稱 
   */ 
  private String name; 
 
  /** 
   * 登錄名稱 
   */ 
  private String username; 
 
  /** 
   * 登錄密碼 
   */ 
  private String password; 
 
  private boolean isAccountNonExpired = true; 
 
  private boolean isAccountNonLocked = true; 
 
  private boolean isCredentialsNonExpired = true; 
 
  private boolean isEnabled = true; 
 
  private Set<AuthorityInfo> authorities = new HashSet<AuthorityInfo>(); 
....省略getters setters 方法 
} 

到這裡基本就已經完成了，運行CAS Server ，將以上的application.properties文件中的地址修改為實際的地址即可運行。

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持。