vue+springboot前后端分離實(shí)現(xiàn)單點(diǎn)登錄跨域問題解決方法

@Configuration
public class CorsConfiguration {
 @Bean
 public WebMvcConfigurer corsConfigurer() {
 return new WebMvcConfigurerAdapter() {
 @Override
 public void addCorsMappings(CorsRegistry registry) {
 registry.addMapping("/**")
 .allowedHeaders("*")
 .allowedMethods("*")
 .allowedOrigins("*");
 }
 };
 }
}

public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
 //用戶已經(jīng)登錄
 if (request.getSession().getAttribute("user") != null) {
 return true;
 }
 //從單點(diǎn)登錄返回之后的狀態(tài)，本系統(tǒng)還不處于登錄狀態(tài)
 //根據(jù)code值去獲取access_token，然后再根據(jù)access_token去獲取用戶信息，并將用戶信息存到session中
 String state = request.getParameter("state");
 String uri = getUri(request);
 if (isLoginFromSSO(state)) {
 String code = request.getParameter("code");
 Object cacheUrl = request.getSession().getAttribute(state);
 if (cacheUrl == null) {
 response.sendRedirect(uri);
 return false;
 }
 HttpUtil client = new HttpUtil();
 StringBuffer sb = new StringBuffer();
 sb.append("code=").append(code)
 .append("&grant_type=").append("authorization_code")
 .append("&client_id=").append(SSOAuth.ClientID)
 .append("&client_secret=").append(SSOAuth.ClientSecret)
 .append("&redirect_uri=").append(URLEncoder.encode((String) cacheUrl));
 String resp = client.post(SSOAuth.AccessTokenUrl, sb.toString());
 Map<String, String> map = new Gson().fromJson(resp, Map.class);
 //根據(jù)access_token去獲取用戶信息
 String accessToken = map.get("access_token");
 HttpUtil http = new HttpUtil();
 http.addHeader("Authorization", "Bearer " + accessToken);
 String encrypt = http.get(SSOAuth.UserUrl);
 String userinfo = decryptUserInfo(encrypt);
 //封裝成user對象
 User user = new Gson().fromJson(userinfo, User.class);
 request.getSession().setAttribute("user", user);
 return true;
 }
 //跳轉(zhuǎn)到單點(diǎn)登錄界面
 state = Const._SSO_LOGIN + Const.UNDERLINE + RandomUtil.getUUID();
 request.getSession().setAttribute(state, uri);
 String redirectUrl = buildAuthCodeUrl(uri, state);
 response.sendRedirect(redirectUrl);
 return false;
}

window.location.href=this.$api.config.baseUrl+"/system/user/login"

axios.defaults.withCredentials=true;

@Bean
public WebMvcConfigurer corsConfigurer() {
 return new WebMvcConfigurerAdapter() {
 @Override
 public void addCorsMappings(CorsRegistry registry) {
 registry.addMapping("/**")
 .allowedHeaders("*")
 .allowedMethods("*")
 .allowedOrigins("*").allowCredentials(true);
 }
 };
}

//option預(yù)檢查，直接通過請求
if ("OPTIONS".equals(request.getMethod())){
 return true;
}