如何在Spring Security SecurityConfig中获取用户给定的用户名和密码？

Question

对于一些要求，我需要从登录页面的用户给定的用户名和密码。（

但是，我无法设法进入以下SecurityConfig的配置方法。

@EnableWebSecurity公共类SecurityConfig扩展WebSecurity配置适配器{

@Autowired
PasswordEncoder passwordEncoder;

@Autowired
DataSource dataSource;

@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {

    **// Wants to get user-given username and password**


         auth.jdbcAuthentication().dataSource(dataSource)
         .passwordEncoder(passwordEncoder())
         .usersByUsernameQuery("select username,password, true from user where username=?")
        .authoritiesByUsernameQuery("select u.username, r.rolename from user u, role r where u.roleId = r.id and u.username=?");


     }

}

Answer 1

这里不应该这样做。如果你想获得用户凭据，你应该在你的过滤器中实现它。例如，你可以定义一个新的。

@Component
@Order(Ordered.HIGHEST_PRECEDENCE)
class AuthFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }


    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
            ServletException {
        if (request.getContentType() != null && request.getContentType().contains("application/json") && Objects.equals(((RequestFacade) request).getServletPath(), "/oauth/token")) {
            InputStream is = request.getInputStream();
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();

            int nRead;
            byte[] data = new byte[16384];

            while ((nRead = is.read(data, 0, data.length)) != -1) {
                buffer.write(data, 0, nRead);
            }
            buffer.flush();
            byte[] json = buffer.toByteArray();

            HashMap<String, String> result = new ObjectMapper().readValue(json, HashMap.class);
            HashMap<String, String[]> r = new HashMap<>();
            for (String key : result.keySet()) {
                String[] val = new String[1];
                val[0] = result.get(key);
                r.put(key, val);
            }

            String[] val = new String[1];
            val[0] = ((RequestFacade) request).getMethod();
            r.put("_method", val);

            HttpServletRequest s = new MyServletRequestWrapper(((HttpServletRequest) request), r);
            chain.doFilter(s, response);
        } else {
            chain.doFilter(request, response);
        }
    }

    @Override
    public void destroy() {
    }
}

例如，这段代码获取查询参数并将其放入请求体中。