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我已经创建了一个用户登录界面，用户使用spring security进行身份验证。Spring MVC身份验证成功处理程序和控制器
我制作了一个AuthenticationSuccessHandler，它将用户重定向到一个新页面。
我也想实现loginController以获取登录用户的名称以及显示错误消息的错误凭据。这里是我的Handler代码：
public class MySimpleUrlAuthenticationSuccessHandler implements AuthenticationSuccessHandler {
protected final Log logger = LogFactory.getLog(this.getClass());
private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
protected MySimpleUrlAuthenticationSuccessHandler() {
super();
}
@Override
public void onAuthenticationSuccess(final HttpServletRequest request, final HttpServletResponse response, final Authentication authentication) throws IOException {
handle(request, response, authentication);
clearAuthenticationAttributes(request);
}
protected void handle(final HttpServletRequest request, final HttpServletResponse response, final Authentication authentication) throws IOException {
final String targetUrl = determineTargetUrl(authentication);
if (response.isCommitted()) {
logger.debug("Response has already been committed. Unable to redirect to " + targetUrl);
return;
}
redirectStrategy.sendRedirect(request, response, targetUrl);
}
protected String determineTargetUrl(final Authentication authentication) {
boolean isUser = false;
boolean isAdmin = false;
final Collection<? extends GrantedAuthority> authorities = authentication.getAuthorities();
for (final GrantedAuthority grantedAuthority : authorities) {
if (grantedAuthority.getAuthority().equals("ROLE_USER")) {
isUser = true;
break;
} else if (grantedAuthority.getAuthority().equals("ROLE_ADMIN")) {
isAdmin = true;
break;
}
}
if (isUser) {
return "/static_htm.html";
} else if (isAdmin) {
return "/console.html";
} else {
throw new IllegalStateException();
}
}
而且我controller代码：
@Controller
public class HelloController {
@RequestMapping(value="/login", method = RequestMethod.GET)
public String printWelcome(ModelMap model, Principal principal) {
String name = principal.getName();
model.addAttribute("username", name);
model.addAttribute("message", "Spring Security Hello World");
return "static_htm"; //page after successful login
}
@RequestMapping(value="/login", method = RequestMethod.GET)
public String login(ModelMap model) {
return "login"; //login page
}
@RequestMapping(value="/loginfailed", method = RequestMethod.GET)
public String loginerror(ModelMap model) {
//String errormessage = resources.getMessage("login.error", null, null);
model.addAttribute("error", "true");
return "login"; //login page
}
}
处理程序工作正常，但我没能获得用户名以及错误消息。我该怎么做才能使handler和controller一起工作？
任何建议都不胜感激。