代码.txt

package com.tgy.rtls.web.aspect;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.tgy.rtls.data.entity.map.Map_2d;
import com.tgy.rtls.data.entity.user.Member;
import com.tgy.rtls.data.service.map.Map2dService;
import com.tgy.rtls.data.service.user.impl.MemberService;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.subject.Subject;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.DefaultParameterNameDiscoverer;
import org.springframework.core.ParameterNameDiscoverer;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.ResponseBody;

import java.lang.reflect.Method;
import java.util.*;

/**
 * @BelongsProject: rtls
 * @BelongsPackage: com.tgy.rtls.data.common
 * @Author: wuwei
 * @CreateTime: 2022-08-25 11:45
 * @Description: TODO
 * @Version: 1.0
 */
//标识切面
@Aspect
@Component
public  class PermissionAspect {
    private static Logger logger = LoggerFactory.getLogger(PermissionAspect.class);
    @Autowired
    private MemberService memberService;
    /**
     * 切入点
     * 切入点为包路径下的：execution(public * com.tgy.rtls.web.controller..*(..))：
     * com.tgy.rtls.web.controller包下任意类任意返回值的 public 的方法
     * <p>
     * 切入点为注解的： @annotation(MyPermission)
     * 存在 MyPermission 注解的方法
     */
    @Pointcut("@annotation(com.tgy.rtls.web.aspect.MyPermission)")
    private void permission() {

    }

    /**
     * 目标方法调用之前执行
     */
    @Before("permission()")
    public void doBefore() {
        System.out.println("================== step 2: before ==================");
    }

    /**
     * 目标方法调用之后执行
     */
    @After("permission()")
    public void doAfter() {
        System.out.println("================== step 4: after ==================");
    }

    /**
     * 环绕
     * 会将目标方法封装起来
     * 具体验证业务数据
     */
    @Around("permission()")
    @ResponseBody
    public  Object doAround(ProceedingJoinPoint joinPoint) throws Throwable {
        logger.info("调用doAround方法---->开始校验权限");
        Object[] args = new Object[0];
        try {
            MethodSignature signature = (MethodSignature) joinPoint.getSignature();
            Method method = signature.getMethod();
            args = joinPoint.getArgs();
            //获取到请求参数
            Subject subject = SecurityUtils.getSubject();
            Member member = (Member) subject.getPrincipal();

            StringBuilder  stringBuilder  = new StringBuilder ();
            List<Map_2d> map2dList = memberService.getMapId(member.getUid());

           for (Map_2d str : map2dList) {
              stringBuilder.append(str.getId()).append(",").toString();
           }
            Map<String, Object> fieldsName = getFieldsName(joinPoint);
           // for (int i = fieldsName.size(); i >0; i--) {
                args[fieldsName.size()-1]= stringBuilder.substring(0,stringBuilder.length()-1);
           // }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return joinPoint.proceed(args);
    }

    /**
     * 获取参数列表
     *
     * @param joinPoint
     * @return
     * @throws ClassNotFoundException
     * @throws NoSuchMethodException
     */
    private static Map<String, Object> getFieldsName(ProceedingJoinPoint joinPoint) {
        //获取参数值
        Object[] args = joinPoint.getArgs();
        ParameterNameDiscoverer pnd = new DefaultParameterNameDiscoverer();
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        Method method = signature.getMethod();
        //获取参数名
        String[] parameterNames = pnd.getParameterNames(method);
        Map<String, Object> paramMap = new HashMap<>();
        for (int i = parameterNames.length-1; i >=0; i--) {
            paramMap.put(parameterNames[i], args[i]);
        }
        return paramMap;
    }
}
-- aop 动态获取参数代码
private static final String MPAS_ID = "maps";
    */
    @Around("permission()")
    @ResponseBody
    public  Object doAround(ProceedingJoinPoint joinPoint) throws Throwable {
        logger.info("调用doAround方法---->开始校验权限");
        Object[] args = new Object[0];
        try {
            args = joinPoint.getArgs();
            ParameterNameDiscoverer pnd = new DefaultParameterNameDiscoverer();
            MethodSignature signature = (MethodSignature) joinPoint.getSignature();
            Method method = signature.getMethod();

            //获取到请求参数
            Subject subject = SecurityUtils.getSubject();
            Member member = (Member) subject.getPrincipal();

            StringBuilder  stringBuilder  = new StringBuilder ();
            List<Map_2d> map2dList = memberService.getMapId(member.getUid());

           for (Map_2d str : map2dList) {
              stringBuilder.append(str.getId()).append(",").toString();
           }
            //获取参数名
            String[] parameterNames = pnd.getParameterNames(method);
            int index =-1;
            if (parameterNames != null) {
                for (int i = 0; i < parameterNames.length; i++) {
                    if (MPAS_ID.equals(parameterNames[i])) {
                        index = i;

                    }
                }
                args[index] = stringBuilder.substring(0, stringBuilder.length() - 1);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return joinPoint.proceed(args);
    }