您可能知道可以使用其中一个constructors或QByteArray::fromRawData从原始指针创建QByteArray。前者将深度复制原始指针，因此您必须支付成本，但后者将只使用指针。他们都没有获得指针的所有权。是否还有其他方法可以从原始指针创建QByteArray，它不仅取得了指针的所有权，而且还没有深度复制指针？
答案 0 :(得分：2)
不，没有办法将所有权转移到@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SpringSecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private UserDetailsService userDetailsService;
@Autowired
private CustomLoginHandler customLoginHandler;
@Autowired
private CustomLogoutHandler customLogoutHandler;
@Autowired
private CustomAccessDeniedHandler customAccessDeniedHandler;
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(userDetailsService);
}
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
.antMatchers("/api/admin/**").hasRole("ADMIN")
.antMatchers("/api/basic/**").hasRole("BASIC")
.antMatchers("/api/session").permitAll()
.antMatchers(HttpMethod.GET).permitAll()
.antMatchers("/api/**").hasRole("BASIC");
http.formLogin();
http.logout()
.logoutUrl("/api/session/logout")
.addLogoutHandler(customLogoutHandler)
.logoutSuccessHandler(customLogoutHandler);
http.exceptionHandling()
.accessDeniedHandler(customAccessDeniedHandler)
.authenticationEntryPoint(customAccessDeniedHandler);
http.csrf()
.ignoringAntMatchers("/api/session/**");
http.addFilterBefore(new AcceptHeaderLocaleFilter(), UsernamePasswordAuthenticationFilter.class);
http.addFilterAt(customAuthenticationFilter(), UsernamePasswordAuthenticationFilter.class);
http.addFilterAfter(new CsrfTokenResponseHeaderBindingFilter(), CsrfFilter.class);
}
private CustomAuthenticationFilter customAuthenticationFilter() throws Exception {
CustomAuthenticationFilter filter = new CustomAuthenticationFilter();
filter.setAuthenticationSuccessHandler(customLoginHandler);
filter.setAuthenticationFailureHandler(customLoginHandler);
filter.setAuthenticationManager(authenticationManager());
filter.setFilterProcessesUrl("/api/session/login");
return filter;
}
private static void responseText(HttpServletResponse response, String content) throws IOException {
response.setContentType(MediaType.APPLICATION_JSON_UTF8_VALUE);
byte[] bytes = content.getBytes(StandardCharsets.UTF_8);
response.setContentLength(bytes.length);
response.getOutputStream().write(bytes);
response.flushBuffer();
}
@Component
public static class CustomAccessDeniedHandler extends BaseController implements AuthenticationEntryPoint, AccessDeniedHandler {
// NoLogged Access Denied
@Override
public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException {
responseText(response, errorMessage(authException.getMessage()));
}
// Logged Access Denied
@Override
public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException accessDeniedException) throws IOException {
responseText(response, errorMessage(accessDeniedException.getMessage()));
}
}
@Component
public static class CustomLoginHandler extends BaseController implements AuthenticationSuccessHandler, AuthenticationFailureHandler {
// Login Success
@Override
public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException {
LOGGER.info("User login successfully, name={}", authentication.getName());
responseText(response, objectResult(SessionController.getJSON(authentication)));
}
// Login Failure
@Override
public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException {
responseText(response, errorMessage(exception.getMessage()));
}
}
@Component
public static class CustomLogoutHandler extends BaseController implements LogoutHandler, LogoutSuccessHandler {
// Before Logout
@Override
public void logout(HttpServletRequest request, HttpServletResponse response, Authentication authentication) {
}
// After Logout
@Override
public void onLogoutSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException {
responseText(response, objectResult(SessionController.getJSON(null)));
}
}
private static class AcceptHeaderLocaleFilter implements Filter {
private AcceptHeaderLocaleResolver localeResolver;
private AcceptHeaderLocaleFilter() {
localeResolver = new AcceptHeaderLocaleResolver();
localeResolver.setDefaultLocale(Locale.US);
}
@Override
public void init(FilterConfig filterConfig) {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
Locale locale = localeResolver.resolveLocale((HttpServletRequest) request);
LocaleContextHolder.setLocale(locale);
chain.doFilter(request, response);
}
@Override
public void destroy() {
}
}
}
public class CustomAuthenticationFilter extends UsernamePasswordAuthenticationFilter {
@Override
public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {
UsernamePasswordAuthenticationToken authRequest;
try (InputStream is = request.getInputStream()) {
DocumentContext context = JsonPath.parse(is);
String username = context.read("$.username", String.class);
String password = context.read("$.password", String.class);
authRequest = new UsernamePasswordAuthenticationToken(username, password);
} catch (IOException e) {
e.printStackTrace();
authRequest = new UsernamePasswordAuthenticationToken("", "");
}
setDetails(request, authRequest);
return this.getAuthenticationManager().authenticate(authRequest);
}
}
。这将要求班级支持custom cleanup handler，就像QScopedPointer。