网站备案核,网页界面设计的主要内容,icp备案查询工具,cms网站怎么做前后端分离的开发中#xff0c;用户http请求应用服务的接口时, 如果要求检测该用户是否已登录。可以实现的方法有多种#xff0c; 本示例是通过aop 的方式实现#xff0c;简单有效。 约定#xff1a;前端http的post 请求 export async function request(url,data) {const … 前后端分离的开发中用户http请求应用服务的接口时, 如果要求检测该用户是否已登录。可以实现的方法有多种 本示例是通过aop 的方式实现简单有效。 约定前端http的post 请求 export async function request(url,data) {const config {method: POST,headers: {Content-Type: application/json},}//每个请求的参数要求附加sessionid, 该sessionid 是登录时生成的const paramsData Object.assign(data,{sessionid:globalData.sessionID || })config.body JSON.stringify(paramsData)try {const res await window.fetch(url, config)if(res.status!200){return {status: res.status,data:{},headers: res.headers,url: res.url,statusText:res.statusText}}return {status: res.status,data:await res.json(),headers: res.headers,url: res.url,}} catch (err) {return {status: 404,data:{},headers: res.headers,url: res.url,statusText:fetch error:err.toString()}}} 1、在pom.xml 引用 dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-aop/artifactId/dependency 2、创建插入标记 Target({ElementType.METHOD}) // 只在对象方法上标记 Retention(RetentionPolicy.RUNTIME) //运行时反射 public interface Interceptor {String additionalMessage() default ; } 3、实现切入类 Aspect Component Slf4j public class LoggingAspect {Autowiredpublic StringRedisTemplate redisTemplatelocate;private T T getSessionID(Object postData,ClassT clazz){return (T)postData;}Around(annotation(Interceptor)) //有标记的地方将实现以下和切入public Object logExecutionTime(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {//获取切入方法的参数就是前部请求的json数据Object[] args proceedingJoinPoint.getArgs();//获取其中的sessionid// requestBase 实体类只有一个参sessionid , 做为其它实体类的父类用于接收接口上传的参数。RequestBase requestBasegetSessionID(args[0],RequestBase.class);log.info(sessionid:{},requestBase.getSessionid());//检测该sessionid 是否存在(redis)if (requestBase.getSessionid()null || !redisTemplatelocate.hasKey(requestBase.getSessionid())) {//用户未登陆throw new Exception(用户未登陆);}//获取 request 和 responseServletRequestAttributes servletRequestAttributes ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes());log.info(request:{},servletRequestAttributes.getRequest());log.info(response:{},servletRequestAttributes.getResponse());MethodSignature methodSignature (MethodSignature) proceedingJoinPoint.getSignature();String className methodSignature.getDeclaringType().getSimpleName();String methodName methodSignature.getMethod().getName();Instant startTime Instant.now();//实行被切入的方法Object result proceedingJoinPoint.proceed();String additionalMessage methodSignature.getMethod().getAnnotation(Interceptor.class).additionalMessage();long elapsedTime Duration.between(startTime, Instant.now()).toMillis();log.info(Class Name: {}, Method Name: {}, Additional Message: {}, Elapsed Time: {}ms,className, methodName, additionalMessage, elapsedTime);log.info(Result: {}, result);return result;} } 4 建立api接口在需要检测的方法上加入Interceptor 就完成切入的检测。 RestController Slf4j public class ExampleController {PostMapping(/t1)Interceptor(additionalMessage 要求检测登录)ResponseBodypublic ResponseEntityRequestBase getData(RequestBody DataRequest req) {try {return new ResponseEntity(req, HttpStatus.OK);} catch (Exception e) {return new ResponseEntity(null, HttpStatus.BAD_REQUEST);}} } 5 实体类 Data public class DataRequest extends RequestBase {private String name; }Data public class RequestBase{private String sessionid; }该方法只适用于少部分需要检测而大部份不需要检测的情况下如果整个包都需要检测的利用execution方 法实现 Pointcut(execution(public * com.example.myapp..*.*(..))) Aspect Component Slf4j public class LoginExecution {Autowiredpublic StringRedisTemplate redisTemplatelocate;private T T getSessionID(Object postData,ClassT clazz){return (T)postData;}//切入点 com.aop.ttt 下的所有public 方法Pointcut(execution(public * com.aop.ttt..*.*(..)))public void publicMethods() {}Around(publicMethods())public Object logExecutionTime(ProceedingJoinPoint joinPoint) throws Throwable {//获取切入方法的参数就是前部请求的json数据Object[] args joinPoint.getArgs();//获取其中的sessionid// requestBase 实体类只有一个参sessionid , 做为其它实体类的父类用于接收接口上传的参数。RequestBase requestBasegetSessionID(args[0],RequestBase.class);log.info(sessionid:{},requestBase.getSessionid());//检测该sessionid 是否存在(redis)if (requestBase.getSessionid()null || !redisTemplatelocate.hasKey(requestBase.getSessionid())) {//用户未登陆throw new Exception(用户未登陆);}//获取 request 和 responseServletRequestAttributes servletRequestAttributes ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes());log.info(request:{},servletRequestAttributes.getRequest());log.info(response:{},servletRequestAttributes.getResponse());MethodSignature methodSignature (MethodSignature) joinPoint.getSignature();String className methodSignature.getDeclaringType().getSimpleName();String methodName methodSignature.getMethod().getName();Instant startTime Instant.now();//实行被切入的方法Object result joinPoint.proceed();long elapsedTime Duration.between(startTime, Instant.now()).toMillis();log.info(Class Name: {}, Method Name: {}, Elapsed Time: {}ms,className, methodName, elapsedTime);log.info(Result: {}, result);return result;} }