SpringStudy/SpringSecurity/src/main/java/cc/bnblogs/springsecurity/controller/BrowserSecurityController.java

package cc.bnblogs.springsecurity.controller;

import org.springframework.http.HttpStatus;
import org.springframework.security.web.DefaultRedirectStrategy;
import org.springframework.security.web.RedirectStrategy;
import org.springframework.security.web.savedrequest.HttpSessionRequestCache;
import org.springframework.security.web.savedrequest.RequestCache;
import org.springframework.security.web.savedrequest.SavedRequest;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@RestController
public class BrowserSecurityController {
    private final RequestCache requestCache = new HttpSessionRequestCache();
    private final RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();

    @GetMapping("/authentication/require")
    @ResponseStatus(HttpStatus.UNAUTHORIZED)
    public String requireAuthentication(HttpServletRequest request, HttpServletResponse response) throws IOException {
        SavedRequest savedRequest = requestCache.getRequest(request,response);
        if (savedRequest != null) {
            String targetUrl = savedRequest.getRedirectUrl();
            if (StringUtils.endsWithIgnoreCase(targetUrl,".html")) {
                redirectStrategy.sendRedirect(request,response,"/login.html");
            }
            if (StringUtils.pathEquals(targetUrl,"http://localhost:8080/login")) {
                redirectStrategy.sendRedirect(request,response,"/login.html");
            }
        }
        return "您访问的资源需要身份认证!";
    }
}