admin
2024-01-23 81da61b828e29b7745e1382dfbbaeb685dc083ef
fanli/src/main/java/com/yeshi/fanli/aspect/RequestSerializableServiceAspect.java
@@ -1,114 +1,115 @@
package com.yeshi.fanli.aspect;
import java.lang.reflect.Method;
import javax.annotation.Resource;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.core.DefaultParameterNameDiscoverer;
import org.springframework.expression.EvaluationContext;
import org.springframework.expression.Expression;
import org.springframework.expression.ExpressionParser;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;
import org.springframework.stereotype.Component;
import com.yeshi.fanli.util.Constant;
import com.yeshi.fanli.util.StringUtil;
import com.yeshi.fanli.util.annotation.RequestSerializableByKeyService;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.params.SetParams;
@Component
@Aspect
public class RequestSerializableServiceAspect {
   @Resource
   private JedisPool jedisPool;
   private ExpressionParser parser = new SpelExpressionParser();
   private DefaultParameterNameDiscoverer nameDiscoverer = new DefaultParameterNameDiscoverer();
   public String generateKeyBySpEL(String spELString, ProceedingJoinPoint joinPoint) {
      MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature();
      String[] paramNames = nameDiscoverer.getParameterNames(methodSignature.getMethod());
      Expression expression = parser.parseExpression(spELString);
      EvaluationContext context = new StandardEvaluationContext();
      Object[] args = joinPoint.getArgs();
      for (int i = 0; i < args.length; i++) {
         context.setVariable(paramNames[i], args[i]);
      }
      return expression.getValue(context).toString();
   }
   @Around("execution(public * com.yeshi.fanli.service.impl..*.*(..))")
   public Object requestSerializable(ProceedingJoinPoint joinPoint) throws Throwable {
      Signature signature = joinPoint.getSignature();
      MethodSignature methodSignature = (MethodSignature) signature;
      Method targetMethod = methodSignature.getMethod();
      String cacheKey = null;
      try {
         Method realMethod = joinPoint.getTarget().getClass().getDeclaredMethod(joinPoint.getSignature().getName(),
               targetMethod.getParameterTypes());
         if (realMethod.isAnnotationPresent(RequestSerializableByKeyService.class)) {
            RequestSerializableByKeyService rs = realMethod.getAnnotation(RequestSerializableByKeyService.class);
            String key = rs.key();
            cacheKey = generateKeyBySpEL(key, joinPoint);
            try {// redis做原子性保护
               if (!StringUtil.isNullOrEmpty(cacheKey)) {
                  cacheKey = joinPoint.getTarget().getClass().getName() + "." + targetMethod.getName() + "-"
                        + cacheKey;
                  cacheKey = "service-" + StringUtil.Md5(cacheKey);
                  // jiedis原子性做拦截
                  Jedis jedis = jedisPool.getResource();
                  try {
                     Constant.waitingThreadSet.add(Thread.currentThread().getId());
                     String result = null;
                     long startTime = System.currentTimeMillis();
                     // 等待响应
                     while (StringUtil.isNullOrEmpty(result)) {
                        result = jedis.set(cacheKey, "1", new SetParams().nx().ex(30));
                        if (StringUtil.isNullOrEmpty(result)) {
                           try {
                              Thread.sleep(50);
                           } catch (InterruptedException e) {
                              e.printStackTrace();
                           }
                           if (System.currentTimeMillis() - startTime > 1000 * 60L) {
                              Constant.waitingThreadSet.remove(Thread.currentThread().getId());
                              return null;
                           }
                        }
                     }
                     if (!StringUtil.isNullOrEmpty(result)) {
                        try {
                           return joinPoint.proceed();
                        } finally {
                           jedis.del(cacheKey);
                           Constant.waitingThreadSet.remove(Thread.currentThread().getId());
                        }
                     }
                  } finally {
                     jedis.close();
                  }
               }
            } catch (Exception e) {// 原子性保护出错
                  return joinPoint.proceed();
            }
         }
      } catch (NoSuchMethodException e) {
         e.printStackTrace();
      } catch (SecurityException e) {
         e.printStackTrace();
      }
      return joinPoint.proceed();
   }
}
package com.yeshi.fanli.aspect;
import java.lang.reflect.Method;
import javax.annotation.Resource;
import com.yeshi.fanli.util.RedisManager;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.core.DefaultParameterNameDiscoverer;
import org.springframework.expression.EvaluationContext;
import org.springframework.expression.Expression;
import org.springframework.expression.ExpressionParser;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;
import org.springframework.stereotype.Component;
import com.yeshi.fanli.util.Constant;
import com.yeshi.fanli.util.StringUtil;
import com.yeshi.fanli.util.annotation.RequestSerializableByKeyService;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.params.SetParams;
@Component
@Aspect
public class RequestSerializableServiceAspect {
   @Resource
   private RedisManager redisManager;
   private ExpressionParser parser = new SpelExpressionParser();
   private DefaultParameterNameDiscoverer nameDiscoverer = new DefaultParameterNameDiscoverer();
   public String generateKeyBySpEL(String spELString, ProceedingJoinPoint joinPoint) {
      MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature();
      String[] paramNames = nameDiscoverer.getParameterNames(methodSignature.getMethod());
      Expression expression = parser.parseExpression(spELString);
      EvaluationContext context = new StandardEvaluationContext();
      Object[] args = joinPoint.getArgs();
      for (int i = 0; i < args.length; i++) {
         context.setVariable(paramNames[i], args[i]);
      }
      return expression.getValue(context).toString();
   }
   @Around("execution(public * com.yeshi.fanli.service.impl..*.*(..))")
   public Object requestSerializable(ProceedingJoinPoint joinPoint) throws Throwable {
      Signature signature = joinPoint.getSignature();
      MethodSignature methodSignature = (MethodSignature) signature;
      Method targetMethod = methodSignature.getMethod();
      String cacheKey = null;
      try {
         Method realMethod = joinPoint.getTarget().getClass().getDeclaredMethod(joinPoint.getSignature().getName(),
               targetMethod.getParameterTypes());
         if (realMethod.isAnnotationPresent(RequestSerializableByKeyService.class)) {
            RequestSerializableByKeyService rs = realMethod.getAnnotation(RequestSerializableByKeyService.class);
            String key = rs.key();
            cacheKey = generateKeyBySpEL(key, joinPoint);
            try {// redis做原子性保护
               if (!StringUtil.isNullOrEmpty(cacheKey)) {
                  cacheKey = joinPoint.getTarget().getClass().getName() + "." + targetMethod.getName() + "-"
                        + cacheKey;
                  cacheKey = "service-" + StringUtil.Md5(cacheKey);
                  // jiedis原子性做拦截
                  Jedis jedis = redisManager.getJedis();
                  try {
                     Constant.waitingThreadSet.add(Thread.currentThread().getId());
                     String result = null;
                     long startTime = System.currentTimeMillis();
                     // 等待响应
                     while (StringUtil.isNullOrEmpty(result)) {
                        result = jedis.set(cacheKey, "1", new SetParams().nx().ex(30));
                        if (StringUtil.isNullOrEmpty(result)) {
                           try {
                              Thread.sleep(50);
                           } catch (InterruptedException e) {
                              e.printStackTrace();
                           }
                           if (System.currentTimeMillis() - startTime > 1000 * 60L) {
                              Constant.waitingThreadSet.remove(Thread.currentThread().getId());
                              return null;
                           }
                        }
                     }
                     if (!StringUtil.isNullOrEmpty(result)) {
                        try {
                           return joinPoint.proceed();
                        } finally {
                           jedis.del(cacheKey);
                           Constant.waitingThreadSet.remove(Thread.currentThread().getId());
                        }
                     }
                  } finally {
                     jedis.close();
                  }
               }
            } catch (Exception e) {// 原子性保护出错
                  return joinPoint.proceed();
            }
         }
      } catch (NoSuchMethodException e) {
         e.printStackTrace();
      } catch (SecurityException e) {
         e.printStackTrace();
      }
      return joinPoint.proceed();
   }
}