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SpringBoot集成SpringSecurity和JWT做登陆鉴权的实现

时间:2020-04-22 08:28:05  来源:优讯网  作者:小卡司  浏览次数:
这篇文章主要介绍了SpringBoot集成SpringSecurity和JWT做登陆鉴权的实现,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧

废话

目前流行的前后端分离让Java程序员可以更加专注的做好后台业务逻辑的功能实现,提供如返回Json格式的数据接口就可以。SpringBoot的易用性和对其他框架的高度集成,用来快速开发一个小型应用是最佳的选择。

一套前后端分离的后台项目,刚开始就要面对的就是登陆和授权的问题。这里提供一套方案供大家参考。

主要看点:

  • 登陆后获取token,根据token来请求资源
  • 根据用户角色来确定对资源的访问权限
  • 统一异常处理
  • 返回标准的Json格式数据

正文

首先是pom文件:

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<dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <optional>true</optional>
    </dependency>
    <!--这是不是必须,只是我引用了里面一些类的方法-->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-solr</artifactId>
    </dependency>
        <!--这是不是必须,只是我引用了里面一些类的方法-->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
      <groupId>org.mybatis.spring.boot</groupId>
      <artifactId>mybatis-spring-boot-starter</artifactId>
      <version>1.3.2</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-configuration-processor</artifactId>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>io.springfox</groupId>
      <artifactId>springfox-swagger2</artifactId>
      <version>2.6.1</version>
    </dependency>
    <dependency>
      <groupId>io.springfox</groupId>
      <artifactId>springfox-swagger-ui</artifactId>
      <version>2.6.1</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-rest</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.security</groupId>
      <artifactId>spring-security-jwt</artifactId>
      <version>1.0.9.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>io.jsonwebtoken</groupId>
      <artifactId>jjwt</artifactId>
      <version>0.9.0</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
  </dependencies>

application.yml:

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spring :
 datasource :
  url : jdbc:mysql://127.0.0.1:3306/les_data_center?useUnicode=true&amp;
characterEncoding=UTF-8&allowMultiQueries=true&useAffectedRows=true&useSSL=false

  username : root
  password : 123456
  driverClassName : com.mysql.jdbc.Driver
 jackson:
  data-format: yyyy-MM-dd HH:mm:ss
  time-zone: GMT+8
mybatis :
 config-location : classpath:/mybatis-config.xml
# JWT
jwt:
 header: Authorization
 secret: mySecret
 #token有效期一天
 expiration: 86400
 tokenHead: "Bearer "

接着是对security的配置,让security来保护我们的API

SpringBoot推荐使用配置类来代替xml配置。那这里,我也使用配置类的方式。

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@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
 
  private final JwtAuthenticationEntryPoint unauthorizedHandler;
 
  private final AccessDeniedHandler accessDeniedHandler;
 
  private final UserDetailsService CustomUserDetailsService;
 
  private final JwtAuthenticationTokenFilter authenticationTokenFilter;
 
  @Autowired
  public WebSecurityConfig(JwtAuthenticationEntryPoint unauthorizedHandler,
               @Qualifier("RestAuthenticationAccessDeniedHandler")
AccessDeniedHandler accessDeniedHandler,

               @Qualifier("CustomUserDetailsService") UserDetailsService
CustomUserDetailsService,

               JwtAuthenticationTokenFilter authenticationTokenFilter) {
    this.unauthorizedHandler = unauthorizedHandler;
    this.accessDeniedHandler = accessDeniedHandler;
    this.CustomUserDetailsService = CustomUserDetailsService;
    this.authenticationTokenFilter = authenticationTokenFilter;
  }
 
  @Autowired
  public void configureAuthentication(AuthenticationManagerBuilder
authenticationManagerBuilder)
throws Exception {
    authenticationManagerBuilder
        // 设置UserDetailsService
        .userDetailsService(this.CustomUserDetailsService)
        // 使用BCrypt进行密码的hash
        .passwordEncoder(passwordEncoder());
  }
  // 装载BCrypt密码编码器
  @Bean
  public PasswordEncoder passwordEncoder() {
    return new BCryptPasswordEncoder();
  }
 
  @Override
  protected void configure(HttpSecurity httpSecurity) throws Exception {
    httpSecurity
        .exceptionHandling().accessDeniedHandler(accessDeniedHandler).and()
        // 由于使用的是JWT,我们这里不需要csrf
        .csrf().disable()
        .exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
        // 基于token,所以不需要session
        .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.
STATELESS).and()

 
        .authorizeRequests()
 
        // 对于获取token的rest api要允许匿名访问
        .antMatchers("/api/v1/auth", "/api/v1/signout", "/error/**",
"/api/**").permitAll()
        // 除上面外的所有请求全部需要鉴权认证
        .anyRequest().authenticated();
 
    // 禁用缓存
    httpSecurity.headers().cacheControl();
 
    // 添加JWT filter
    httpSecurity
        .addFilterBefore(authenticationTokenFilter,
UsernamePasswordAuthenticationFilter.
class);
  }
 
  @Override
  public void configure(WebSecurity web) throws Exception {
    web.ignoring().antMatchers("/v2/api-docs",
        "/swagger-resources/configuration/ui",
        "/swagger-resources",
        "/swagger-resources/configuration/security",
        "/swagger-ui.html"
    );
  }
 
  @Bean
  @Override
  public AuthenticationManager authenticationManagerBean() throws Exception {
    return super.authenticationManagerBean();
  }
}

该类中配置了几个bean来供security使用。

  1. JwtAuthenticationTokenFilter:token过滤器来验证token有效性
  2. UserDetailsService:实现了DetailsService接口,用来做登陆验证
  3. JwtAuthenticationEntryPoint :认证失败处理类
  4. RestAuthenticationAccessDeniedHandler: 权限不足处理类

那么,接下来一个一个实现这些类:

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/**
 * token校验,引用的stackoverflow一个答案里的处理方式
 * Author: JoeTao
 * createAt: 2018/9/14
 */
@Component
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {
 
  @Value("${jwt.header}")
  private String token_header;
 
  @Resource
  private JWTUtils jwtUtils;
 
  @Override
  protected void doFilterInternal(HttpServletRequest request, HttpServletResponse
response, FilterChain chain)
throws ServletException, IOException {
    String auth_token = request.getHeader(this.token_header);
    final String auth_token_start = "Bearer ";
    if (StringUtils.isNotEmpty(auth_token) && auth_token.startsWith(auth_token_start))
{

      auth_token = auth_token.substring(auth_token_start.length());
    } else {
      // 不按规范,不允许通过验证
      auth_token = null;
    }
 
    String username = jwtUtils.getUsernameFromToken(auth_token);
 
    logger.info(String.format("Checking authentication for user %s.", username));
 
    if (username != null && SecurityContextHolder.getContext().getAuthentication() ==
null) {
      User user = jwtUtils.getUserFromToken(auth_token);
      if (jwtUtils.validateToken(auth_token, user)) {
        UsernamePasswordAuthenticationToken authentication = new UsernamePasswor
dAuthenticationToken(user,
null, user.getAuthorities());
        authentication.setDetails(new WebAuthenticationDetailsSource().buildDetai
ls(request));

        logger.info(String.format("Authenticated user %s, setting security contex
t"
, username));
        SecurityContextHolder.getContext().setAuthentication(authentication);
      }
    }
    chain.doFilter(request, response);
  }
}
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/**
 * 认证失败处理类,返回401
 * Author: JoeTao
 * createAt: 2018/9/20
 */
@Component
public class JwtAuthenticationEntryPoint implements AuthenticationEntryPoint, Serializable {
 
  private static final long serialVersionUID = -8970718410437077606L;
 
  @Override
  public void commence(HttpServletRequest request,
             HttpServletResponse response,
             AuthenticationException authException) throws IOException {
    //验证为未登陆状态会进入此方法,认证错误
    System.out.println("认证失败:" + authException.getMessage());
    response.setStatus(200);
    response.setCharacterEncoding("UTF-8");
    response.setContentType("application/json; charset=utf-8");
    PrintWriter printWriter = response.getWriter();
    String body = ResultJson.failure(ResultCode.UNAUTHORIZED,
authException.getMessage()).toString();

    printWriter.write(body);
    printWriter.flush();
  }
}

因为我们使用的REST API,所以我们认为到达后台的请求都是正常的,所以返回的HTTP状态码都是200,用接口返回的code来确定请求是否正常。

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/**
* 权限不足处理类,返回403
 * Author: JoeTao
 * createAt: 2018/9/21
 */
@Component("RestAuthenticationAccessDeniedHandler")
public class RestAuthenticationAccessDeniedHandler implements AccessDeniedHandler {
  @Override
  public void handle(HttpServletRequest httpServletRequest, HttpServletResponse
response, AccessDeniedException e)
throws IOException, ServletException {
    //登陆状态下,权限不足执行该方法
    System.out.println("权限不足:" + e.getMessage());
    response.setStatus(200);
    response.setCharacterEncoding("UTF-8");
    response.setContentType("application/json; charset=utf-8");
    PrintWriter printWriter = response.getWriter();
    String body = ResultJson.failure(ResultCode.FORBIDDEN, e.getMessage()).
toString();

    printWriter.write(body);
    printWriter.flush();
  }
}
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/**
 * 登陆身份认证
 * Author: JoeTao
 * createAt: 2018/9/14
 */
@Component(value="CustomUserDetailsService")
public class CustomUserDetailsService implements UserDetailsService {
  private final AuthMapper authMapper;
 
  public CustomUserDetailsService(AuthMapper authMapper) {
    this.authMapper = authMapper;
  }
 
  @Override
  public User loadUserByUsername(String name) throws UsernameNotFoundException {
    User user = authMapper.findByUsername(name);
    if (user == null) {
      throw new UsernameNotFoundException(String.format("No user
found with username '%s'."
, name));
    }
    Role role = authMapper.findRoleByUserId(user.getId());
    user.setRole(role);
    return user;
  }
}

登陆逻辑:

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public ResponseUserToken login(String username, String password) {
    //用户验证
    final Authentication authentication = authenticate(username, password);
    //存储认证信息
    SecurityContextHolder.getContext().setAuthentication(authentication);
    //生成token
    final User user = (User) authentication.getPrincipal();
//    User user = (User) userDetailsService.loadUserByUsername(username);
    final String token = jwtTokenUtil.generateAccessToken(user);
    //存储token
    jwtTokenUtil.putToken(username, token);
    return new ResponseUserToken(token, user);
  }
 
private Authentication authenticate(String username, String password) {
    try {
      //该方法会去调用userDetailsService.loadUserByUsername()
去验证用户名和密码,如果正确,则存储该用户名密码到“security 的 context中”

      return authenticationManager.authenticate(new UsernamePasswor
dAuthenticationToken(username, password));

    } catch (DisabledException | BadCredentialsException e) {
      throw new CustomException(ResultJson.failure(ResultCode.
LOGIN_ERROR, e.getMessage()));

    }
  }

自定义异常:

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@Getter
public class CustomException extends RuntimeException{
  private ResultJson resultJson;
 
  public CustomException(ResultJson resultJson) {
    this.resultJson = resultJson;
  }
}

统一异常处理:

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/**
 * 异常处理类
 * controller层异常无法捕获处理,需要自己处理
 * Created by jt on 2018/8/27.
 */
@RestControllerAdvice
@Slf4j
public class DefaultExceptionHandler {
 
  /**
   * 处理所有自定义异常
   * @param e
   * @return
   */
  @ExceptionHandler(CustomException.class)
  public ResultJson handleCustomException(CustomException e){
    log.error(e.getResultJson().getMsg().toString());
    return e.getResultJson();
  }
}

所有经controller转发的请求抛出的自定义异常都会被捕获处理,一般情况下就是返回给调用方一个json的报错信息,包含自定义状态码、错误信息及补充描述信息。

值得注意的是,在请求到达controller之前,会被Filter拦截,如果在controller或者之前抛出的异常,自定义的异常处理器是无法处理的,需要自己重新定义一个全局异常处理器或者直接处理。

Filter拦截请求两次的问题

跨域的post的请求会验证两次,get不会。网上的解释是,post请求第一次是预检请求,Request Method: OPTIONS。
解决方法:

在webSecurityConfig里添加

1 .antMatchers(HttpMethod.OPTIONS, "/**").permitAll()

就可以不拦截options请求了。

这里只给出了最主要的代码,还有controller层的访问权限设置,返回状态码,返回类定义等等。

所有代码已上传GitHub,项目地址

到此这篇关于SpringBoot集成SpringSecurity和JWT做登陆鉴权的实现的文章就介绍到这了

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原文链接:https://www.jb51.net/article/185156.htm


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