如何使用Angular Spring JSON自定义登录/身份验证

Question

我有一个角度7前端和Spring后端。

我的目标是使用JSON表单进行自定义登录。计划是：以json格式将用户名/密码从前端发送到后端。在后端进行身份验证，并将结果发送回前端。我的问题：从前端发送数据后，我在后端看不到数据（用户名和密码为空）（在我的CustomAuthenticationProvider.java中）

我的登录页面功能：

let credential = {username: this.loginForm.value.username, password: this.loginForm.value.password};

if(this.loginForm.value.username != null && this.loginForm.value.password != null) {
     this.http.post("auth", JSON.stringify(credential)).subscribe(
           response => {
                if(response.status == 200 && response.ok == true) {
                   this.globals.loggeduser = this.loginForm.value.username;
                   //and routing
                } else {
                     alert("Bad credential");
           } 
     );
}

@Component
public class CustomAuthenticationProvider implements AuthenticationProvider {

    public CustomAuthenticationProvider() {
        super();
    }

    @Override
    public Authentication authenticate(final Authentication authentication) throws AuthenticationException {
        final String username = authentication.getName();
        final String password = authentication.getCredentials().toString();

 //THE PROBLEM: username and password are empty here

            if (/* some custom auth here */) {
                final List<GrantedAuthority> grantedAuths = new ArrayList<>();
                grantedAuths.add(new SimpleGrantedAuthority("ROLE_USER"));
                final UserDetails principal = new User(username, password, grantedAuths);
                final Authentication auth = new UsernamePasswordAuthenticationToken(principal, password, grantedAuths);
             
                return auth;
            }

        return null;
    }

    @Override
    public boolean supports(Class<?> authentication) {
        return UsernamePasswordAuthenticationToken.class.isAssignableFrom(authentication);
    }

}

@Configuration
@EnableWebSecurity
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

    @Autowired
    private CustomAuthenticationProvider customAuthenticationProvider;

    @Override
    protected void configure(final AuthenticationManagerBuilder auth) throws Exception {
        auth.authenticationProvider(customAuthenticationProvider);
    }

    @Override
    protected void configure(final HttpSecurity http) throws Exception {
        http.csrf().disable()
            .authorizeRequests()
            .antMatchers(HttpMethod.GET,"/login", "/index*", "/static/**", "/*.js", 
                                        "/*.json", "/*.ico", "/*.sccs", "/*.woff2", "/*.css").permitAll()
            .anyRequest()
                .authenticated()
                .and()
            .formLogin()
                .loginPage("/")
                .loginProcessingUrl("/auth")
                .usernameParameter("username")
                .passwordParameter("password")
                .successHandler(successHandler())
                .failureHandler(failureHandler())
                .permitAll()
                .and()
            .logout()
                .permitAll();
    }

    private AuthenticationSuccessHandler successHandler() {
       ...
    }

    private AuthenticationFailureHandler failureHandler() {
       ...
    }
}

当我在用户名和密码中添加值后打印出身份验证时，我得到这个（主体和凭据是空的）：

org.springframework.security.authentication.UsernamePasswordAuthenticationToken@b37b: Principal: ; Credentials: [PROTECTED];
Authenticated: false; Details: org.springframework.security.web.authentication.WebAuthenticationDetails@b364:
RemoteIpAddress: 0:0:0:0:0:0:0:1; SessionId: null; Not granted any authorities

使用not JSON格式很好，但我需要使用JSON格式。我读了这个和这个（我尝试了这些解决方案，但没有成功）。这些都有点过时，也不好（太复杂和/或xml格式），我读到我必须使用bean编写一个自定义用户名PasswordAuthenticationFilter/但我想做一个好的、干净的java解决方案，而不必重新设计整个过程/使用xml。我能得到一些帮助/提示吗？

编辑：使用这种格式（而不是let credential=…），它可以工作（但不幸的是它不是JSON）：

let urlSearchParams = new URLSearchParams();
urlSearchParams.append('username', this.loginForm.value.username );
urlSearchParams.append('password', this.loginForm.value.password );

Answer 1

我找到了解决办法。

（注意：LoginRequest是一个有2个变量的类：用户名和密码）之后，我将此添加到我的securityConfig中，一切正常：

@Bean
public CustomAuthenticationFilter customAuthenticationFilter() throws Exception{
    CustomAuthenticationFilter customAuthenticationFilter = new CustomAuthenticationFilter();
    customAuthenticationFilter.setAuthenticationManager(authenticationManager());
    customAuthenticationFilter.setFilterProcessesUrl("/auth");
    customAuthenticationFilter.setAuthenticationSuccessHandler(successHandler());
    customAuthenticationFilter.setAuthenticationFailureHandler(failureHandler());

    return customAuthenticationFilter;
}