第SpringBoot訪(fǎng)問(wèn)安全之認(rèn)證和鑒權(quán)詳解目錄攔截器認(rèn)證鑒權(quán)在web應(yīng)用中有大量場(chǎng)景需要對(duì)用戶(hù)進(jìn)行安全校，一般人的做法就是硬編碼的方式直接埋到到業(yè)務(wù)代碼中，但可曾想過(guò)這樣做法會(huì)導(dǎo)致代碼不夠簡(jiǎn)潔（大量重復(fù)代碼）、有個(gè)性化時(shí)難維護(hù)（每個(gè)業(yè)務(wù)邏輯訪(fǎng)問(wèn)控制策略都不相同甚至差異很大）、容易發(fā)生安全泄露（有些業(yè)務(wù)可能不需要當(dāng)前登錄信息，但被訪(fǎng)問(wèn)的數(shù)據(jù)可能是敏感數(shù)據(jù)由于遺忘而沒(méi)有受到保護(hù)）。

為了更安全、更方便的進(jìn)行訪(fǎng)問(wèn)安全控制，我們可以想到的就是使用springmvc的攔截器（HandlerInterceptor），但其實(shí)更推薦使用更為成熟的springsecurity來(lái)完成認(rèn)證和鑒權(quán)。

攔截器

攔截器HandlerInterceptor確實(shí)可以幫我們完成登錄攔截、或是權(quán)限校驗(yàn)、或是防重復(fù)提交等需求。其實(shí)基于它也可以實(shí)現(xiàn)基于url或方法級(jí)的安全控制。

如果你對(duì)springmvc的請(qǐng)求處理流程相對(duì)的了解，它的原理容易理解。

publicinterfaceHandlerInterceptor{

*Intercepttheexecutionofahandler.CalledafterHandlerMappingdetermined

*anappropriatehandlerobject,butbeforeHandlerAdapterinvokesthehandler.

*在業(yè)務(wù)處理器處理請(qǐng)求之前被調(diào)用。預(yù)處理，可以進(jìn)行編碼、安全控制、權(quán)限校驗(yàn)等處理

*handler：controller內(nèi)的方法，可以通過(guò)HandlerMethodmethod=((HandlerMethod)handler);獲取到@RequestMapping

booleanpreHandle(HttpServletRequestrequest,HttpServletResponseresponse,Objecthandler)throwsException;

*Intercepttheexecutionofahandler.CalledafterHandlerAdapteractually

*invokedthehandler,butbeforetheDispatcherServletrenderstheview.

*在業(yè)務(wù)處理器處理請(qǐng)求執(zhí)行完成后，生成視圖之前執(zhí)行。后處理（調(diào)用了Service并返回ModelAndView，但未進(jìn)行頁(yè)面渲染），有機(jī)會(huì)修改ModelAndView

voidpostHandle(HttpServletRequestrequest,HttpServletResponseresponse,Objecthandler,ModelAndViewmodelAndView)throwsException;

*Callbackaftercompletionofrequestprocessing,thatis,afterrendering

*theview.Willbecalledonanyoutcomeofhandlerexecution,thusallows

*forproperresourcecleanup.

*在DispatcherServlet完全處理完請(qǐng)求后被調(diào)用，可用于清理資源等。返回處理（已經(jīng)渲染了頁(yè)面）

voidafterCompletion(HttpServletRequestrequest,HttpServletResponseresponse,Objecthandler,Exceptionex)throwsException;

//你可以基于有些url進(jìn)行攔截

@Configuration

publicclassUserSecurityInterceptorextendsWebMvcConfigurerAdapter{

@Override

publicvoidaddInterceptors(InterceptorRegistryregistry){

String[]securityUrls=newString[]{"/**"};

String[]excludeUrls=newString[]{"/**/esb/**","/**/dictionary/**"};

registry.addInterceptor(userLoginInterceptor()).excludePathPatterns(excludeUrls).addPathPatterns(securityUrls);

super.addInterceptors(registry);

/**fixed:url中包含//報(bào)錯(cuò)

*org.springframework.security.web.firewall.RequestRejectedException:TherequestwasrejectedbecausetheURLwasnotnormalized.

*@return

@Bean

publicHttpFirewallallowUrlEncodedSlashHttpFirewall(){

DefaultHttpFirewallfirewall=newDefaultHttpFirewall();

firewall.setAllowUrlEncodedSlash(true);

returnfirewall;

@Bean

publicAuthInterceptoruserLoginInterceptor(){

returnnewAuthInterceptor();

publicclassAuthInterceptorimplementsHandlerInterceptor{

publicLoggerlogger=LoggerFactory.getLogger(AuthInterceptor.class);

@Autowired

privateApplicationContextapplicationContext;

publicAuthInterceptor(){

@Override

publicbooleanpreHandle(HttpServletRequestrequest,HttpServletResponseresponse,Objecthandler)throwsException{

LoginUserInfouser=null;

try{

user=(LoginUserInfo)SSOUserUtils.getCurrentLoginUser();

}catch(Exceptione){

logger.error("從SSO登錄信息中獲取用戶(hù)信息失?。≡敿?xì)錯(cuò)誤信息：%s",e);

thrownewServletException("從SSO登錄信息中獲取用戶(hù)信息失?。?,e);

String[]profiles=applicationContext.getEnvironment().getActiveProfiles();

if(!Arrays.isNullOrEmpty(profiles)){

if("dev".equals(profiles[0])){

returntrue;

if(user==null||UserUtils.ANONYMOUS_ROLE_ID.equals(user.getRoleId())){

thrownewServletException("獲取登錄用戶(hù)信息失?。?);

returntrue;

@Override

publicvoidpostHandle(HttpServletRequestrequest,HttpServletResponseresponse,Objecthandler,ModelAndViewmodelAndView)throwsException{

@Override

publicvoidafterCompletion(HttpServletRequestrequest,HttpServletResponseresponse,Objecthandler,Exceptionex)throwsException{

}

認(rèn)證

確認(rèn)一個(gè)訪(fǎng)問(wèn)請(qǐng)求發(fā)起的時(shí)候背后的用戶(hù)是誰(shuí)，他的用戶(hù)信息是怎樣的。在springsecurity里面認(rèn)證支持很多種方式，最簡(jiǎn)單的就是用戶(hù)名密碼，還有LDAP、OpenID、CAS等等。

而在我們的系統(tǒng)里面，用戶(hù)信息需要通過(guò)kxtx-sso模塊進(jìn)行獲取。通過(guò)sso認(rèn)證比較簡(jiǎn)單，就是要確認(rèn)用戶(hù)是否通過(guò)會(huì)員系統(tǒng)登錄，并把登錄信息包裝成授權(quán)對(duì)象放到SecurityContext中，通過(guò)一個(gè)filter來(lái)完成：

@Data

@EqualsAndHashCode(callSuper=false)

publicclassSsoAuthenticationextendsAbstractAuthenticationToken{

privatestaticfinallongserialVersionUID=-1799455508626725119L;

privateLoginUserInfouser;

publicSsoAuthentication(LoginUserInfouser){

super(null);

this.user=user;

@Override

publicObjectgetCredentials(){

return"kxsso";

@Override

publicObjectgetPrincipal(){

returnuser;

@Override

publicStringgetName(){

returnuser.getName();

publicclassSsoAuthenticationProcessingFilterextendsOncePerRequestFilter{

@Override

protectedvoiddoFilterInternal(HttpServletRequestrequest,HttpServletResponseresponse,FilterChainfilterChain)

throwsServletException,IOException{

LoginUserInfouser=(LoginUserInfo)SSOUserUtils.getCurrentLoginUser();

SsoAuthenticationauth=newSsoAuthentication(user);

SecurityContextHolder.getContext().setAuthentication(auth);

filterChain.doFilter(request,response);

@Component

publicclassSsoAuthenticationProviderimplementsAuthenticationProvider{

@Value("${env}")

Stringenv;

@Override

publicAuthenticationauthenticate(Authenticationauthentication)throwsAuthenticationException{

LoginUserInfologinUserInfo=(LoginUserInfo)authentication.getPrincipal();

*DEV環(huán)境允許匿名用戶(hù)訪(fǎng)問(wèn)，方便調(diào)試，其他環(huán)境必須登錄。

if(!UserUtils.ANONYMOUS_ROLE_ID.equals(loginUserInfo.getRoleId())||"dev".equals(env)){

authentication.setAuthenticated(true);

}else{

thrownewBadCredentialsException("請(qǐng)登錄");

returnauthentication;

@Override

publicbooleansupports(Classauthentication){

returnSsoAuthentication.class.equals(authentication);

@Configuration

@EnableWebSecurity

@EnableGlobalMethodSecurity(securedEnabled=true,prePostEnabled=true)

publicclassWebSecurityConfigextendsWebSecurityConfigurerAdapter{

protectedvoidconfigure(HttpSecurityhttp)throwsException{

//關(guān)閉session

http.sessionManagement().sessionCreationPolicy(Sessi