Spring安全性 - 创建403 Access拒绝自定义响应

Question

我有一个带有jwt身份验证的spring boot rest api.问题是我无法摆脱默认的403 Access Denied rest响应,如下所示:

{
    "timestamp": 1516206966541,
    "status": 403,
    "error": "Forbidden",
    "message": "Access Denied",
    "path": "/api/items/2"
}

我创建了自定义AccessDeniedHandler:

public class CustomAccessDeniedHandler implements AccessDeniedHandler {

    @Override
    public void handle(HttpServletRequest req,
                       HttpServletResponse res,
                       AccessDeniedException accessDeniedException) throws IOException, ServletException {



        ObjectMapper mapper = new ObjectMapper();
        res.setContentType("application/json;charset=UTF-8");
        res.setStatus(403);
        res.getWriter().write(mapper.writeValueAsString(new JsonResponse()
                .add("timestamp", System.currentTimeMillis())
                .add("status", 403)
                .add("message", "Access denied")));
    }
}

并将其添加到WebConfig类

@EnableWebSecurity
public class WebSecurity extends WebSecurityConfigurerAdapter {

    private UserDetailsService userDetailsService;
    private BCryptPasswordEncoder bCryptPasswordEncoder;

    @Autowired
    public WebSecurity(UserDetailsService userDetailsService, BCryptPasswordEncoder bCryptPasswordEncoder) {
        this.userDetailsService = userDetailsService;
        this.bCryptPasswordEncoder = bCryptPasswordEncoder;
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                .sessionManagement()
                .sessionCreationPolicy(SessionCreationPolicy.NEVER)
                .and()
                    .csrf().disable()
                    .authorizeRequests()
                    .antMatchers(HttpMethod.POST, REGISTER_URL).permitAll()
                    .anyRequest().authenticated()
                .and()
                    .exceptionHandling().accessDeniedHandler(accessDeniedHandler())
                .and()
                    .addFilter(new JWTAuthenticationFilter(authenticationManager(), tokenProvider()))
                    .addFilter(new JWTAuthorizationFilter(authenticationManager(), tokenProvider()));

    }

    @Override
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder);
    }

    @Bean
    public TokenProvider tokenProvider(){
        return new TokenProvider();
    }

    @Bean
    public AccessDeniedHandler accessDeniedHandler(){
        return new CustomAccessDeniedHandler();
    }
}

尽管如此,我仍然得到默认的拒绝访问响应.调试时我意识到handle自定义处理程序的方法甚至没有被调用.这是怎么回事？

Answer 1

我想我解决了这个问题。我没有创建 AccessDeniedHandler 的实现，而是创建了一个自定义的 AuthenticationEntryPoint 并将其设置在异常处理中。

WebConfig 现在看起来像这样：

@EnableWebSecurity
public class WebSecurity extends WebSecurityConfigurerAdapter {

    private UserDetailsService userDetailsService;
    private BCryptPasswordEncoder bCryptPasswordEncoder;

    @Autowired
    public WebSecurity(UserDetailsService userDetailsService, BCryptPasswordEncoder bCryptPasswordEncoder) {
        this.userDetailsService = userDetailsService;
        this.bCryptPasswordEncoder = bCryptPasswordEncoder;
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                    .csrf().disable()
                    .authorizeRequests()
                    .antMatchers(HttpMethod.POST, REGISTER_URL).permitAll()
                    .anyRequest().authenticated()
                .and()
                    .exceptionHandling().authenticationEntryPoint(authenticationEntryPoint())
                .and()
                    .addFilter(new JWTAuthenticationFilter(authenticationManager(), tokenProvider()))
                    .addFilter(new JWTAuthorizationFilter(authenticationManager(), tokenProvider()));

    }

    @Override
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder);
    }

    @Bean
    public TokenProvider tokenProvider(){
        return new TokenProvider();
    }

    @Bean
    public AuthenticationEntryPoint authenticationEntryPoint(){
        return new CustomAuthenticationEntryPoint();
    }
}

和 CustomAuthenticationEntryPoint：

public class CustomAuthenticationEntryPoint implements AuthenticationEntryPoint {

    @Override
    public void commence(HttpServletRequest req, HttpServletResponse res, AuthenticationException authException) throws IOException, ServletException {
        res.setContentType("application/json;charset=UTF-8");
        res.setStatus(403);
        res.getWriter().write(JsonBuilder //my util class for creating json strings
                .put("timestamp", DateGenerator.getDate())
                .put("status", 403)
                .put("message", "Access denied")
                .build());
    }
}

现在一切都如我所愿。

Answer 2

我有同样的问题并试图按照正确的答案解决，但它没有解决问题。处理此问题的最佳方法是实现自定义访问被拒绝处理程序。AuthenticationEntryPoint 实现最好处理 401、UNAUTHORIZED 访问和 AccessDeniedHandler 实现用于 403、FORBIDDEN 访问。

将实现类中的 AccessDeniedHandler 方法重写为：

@Override
public void handle(HttpServletRequest request, HttpServletResponse response, 
AccessDeniedException accessDeniedException) throws IOException, ServletException {
    response.getWriter().write("Access Denied... Forbidden");
}

并在您的安全配置中添加这个自定义访问被拒绝处理程序，如下所示：

.exceptionHandling()     
.authenticationEntryPoint(authenticationEntryPoint())
.accessDeniedHandler(accessDeniedHandler())