实现功能：对某个目录下所有请求接口进行拦截判断，如检测登录状态等。
需要pom.xml引入aop:
org.springframework.boot
spring-boot-starter-aop
具体实现：
package com.tuijie.gainguest.common.aspect;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
//import com.tuijie.gainguest.common.enums.JsonCodeEnum;
//import com.tuijie.gainguest.common.result.JsonResp;
//import com.tuijie.gainguest.controller.Constants;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
/**
* @Author: admin
* @Description: 切面AOP
* @Date Created in 9:39 AM 2020/3/31
* @Modified By:
*/
@Aspect
@Component
@Slf4j //log日志，可选
public class SysPointcut {
// 放行接口
private final static String[] excludePathPatterns = {
"/api/sysUserAdmin/login",
"/api/sysUserAdmin/logout",
};
private static final SerializerFeature[] serializerFeatures;
static {
serializerFeatures = new SerializerFeature[] {
SerializerFeature.WriteMapNullValue,
SerializerFeature.WriteNullListAsEmpty
};
}
/**
* 后台管理切面AOP
* 定义切入点，切入点为com.tuijie.gainguest.controller.admin包下所有类-接口
* 通过@Pointcut注解声明频繁使用的切点表达式
*/
@Pointcut("execution(* com.tuijie.gainguest.controller.admin..*.*(..)))")
public void BrokerAspect() {}
@Around("BrokerAspect()")
public Object beforeExec(ProceedingJoinPoint pjp) throws Throwable {
//获取request信息
RequestAttributes ra = RequestContextHolder.getRequestAttributes();
ServletRequestAttributes sra = (ServletRequestAttributes) ra;
assert sra != null;
HttpServletRequest request = sra.getRequest();
HttpSession session = request.getSession();
String uri = request.getRequestURI();
if (!Arrays.asList(excludePathPatterns).contains(uri)) {
Object admin = session.getAttribute(/*Constants.ACCOUNT_SESSION*/"test");
// JsonResp jsonResp;
if (admin == null) {
log.warn("未登录: [{}] [{}]", session.getId(), uri);
// jsonResp = JsonResp.fail(JsonCodeEnum.OVERTIME.getMessage(), JsonCodeEnum.OVERTIME.getCode());
HttpServletResponse response = sra.getResponse();
assert response != null;
response.setCharacterEncoding("utf-8");
response.setContentType("application/json; charset=UTF-8");
PrintWriter writer = response.getWriter();
writer.write(JSON.toJSONString(/*jsonResp*/new HashMap(){{put("id", 1);}}, serializerFeatures));
writer.flush();
writer.close();
return null;
}
}
return pjp.proceed();
}
}
Original: https://www.cnblogs.com/007sx/p/12605377.html
Author: 007少侠
Title: spring boot 使用aop实现拦截器
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