Spring Security 5 使用JSON 登錄

 Spring Security 使用JSON 登錄，對源碼入侵幾乎沒有，不影響其它功能修改引起的問題。

public class CustomUsernamePasswordAuthenticationFilter extends UsernamePasswordAuthenticationFilter {

    @Override
    @SneakyThrows(IOException.class) //lombok try catch
    public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {
        if (request.getContentType().contains(MediaType.APPLICATION_JSON_VALUE)) {
            ObjectMapper mapper = new ObjectMapper();
            Map<String,String> map = mapper.readValue(request.getInputStream(), Map.class);
            String username = map.get(super.getUsernameParameter());
            String password = map.get(super.getPasswordParameter());
            if (username == null) {
                username = "";
            }
            if (password == null) {
                password = "";
            }
            username = username.trim();
            UsernamePasswordAuthenticationToken authRequest = new UsernamePasswordAuthenticationToken(
                    username, password);
            setDetails(request, authRequest);
            return this.getAuthenticationManager().authenticate(authRequest);
        }
        return super.attemptAuthentication(request, response);
    }
}

@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
       http.addFilterAt(usernamePasswordAuthenticationFilter(), UsernamePasswordAuthenticationFilter.class)
    }
    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
    
    UsernamePasswordAuthenticationFilter usernamePasswordAuthenticationFilter() throws Exception {
        CustomUsernamePasswordAuthenticationFilter filter = new CustomUsernamePasswordAuthenticationFilter();
        filter.setAuthenticationManager(authenticationManagerBean());
        return filter;
    }
}