!231 @SysLog支持spel表达式

Merge pull request !231 from BlackR/blackr_dev

pig-common/pig-common-log/src/main/java/com/pig4cloud/pig/common/log/annotation/SysLog.java

@@ -31,6 +31,12 @@ public @interface SysLog {
 	 * 描述
 	 * @return {String}
 	 */
-	String value();
+	String value() default "";
+
+	/**
+	 * spel 表达式
+	 * @return 日志描述
+	 */
+	String expression() default "";
 
 }

pig-common/pig-common-log/src/main/java/com/pig4cloud/pig/common/log/aspect/SysLogAspect.java

@@ -16,6 +16,7 @@
 
 package com.pig4cloud.pig.common.log.aspect;
 
+import cn.hutool.core.util.StrUtil;
 import com.pig4cloud.pig.admin.api.entity.SysLog;
 import com.pig4cloud.pig.common.core.util.SpringContextHolder;
 import com.pig4cloud.pig.common.log.event.SysLogEvent;
@@ -26,6 +27,8 @@ 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.reflect.MethodSignature;
+import org.springframework.expression.EvaluationContext;
 
 /**
  * 操作日志使用spring event异步入库
@@ -43,8 +46,23 @@ public class SysLogAspect {
 		String strMethodName = point.getSignature().getName();
 		log.debug("[类名]:{},[方法]:{}", strClassName, strMethodName);
 
+		String value = sysLog.value();
+		String expression = sysLog.expression();
+		// 当前表达式存在 SPEL，会覆盖 value 的值
+		if (StrUtil.isNotBlank(expression)) {
+			// 解析SPEL
+			MethodSignature signature = (MethodSignature) point.getSignature();
+			EvaluationContext context = SysLogUtils.getContext(point.getArgs(), signature.getMethod());
+			try {
+				value = SysLogUtils.getValue(context, expression, String.class);
+			} catch (Exception e) {
+				// SPEL 表达式异常，获取 value 的值
+				log.error("@SysLog 解析SPEL {} 异常", expression);
+			}
+		}
+
 		SysLog logVo = SysLogUtils.getSysLog();
-		logVo.setTitle(sysLog.value());
+		logVo.setTitle(value);
 
 		// 发送异步日志事件
 		Long startTime = System.currentTimeMillis();

pig-common/pig-common-log/src/main/java/com/pig4cloud/pig/common/log/util/SysLogUtils.java

@@ -21,6 +21,11 @@ import cn.hutool.extra.servlet.ServletUtil;
 import cn.hutool.http.HttpUtil;
 import com.pig4cloud.pig.admin.api.entity.SysLog;
 import lombok.experimental.UtilityClass;
+import org.springframework.core.LocalVariableTableParameterNameDiscoverer;
+import org.springframework.expression.EvaluationContext;
+import org.springframework.expression.Expression;
+import org.springframework.expression.spel.standard.SpelExpressionParser;
+import org.springframework.expression.spel.support.StandardEvaluationContext;
 import org.springframework.http.HttpHeaders;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.Authentication;
@@ -31,6 +36,7 @@ import org.springframework.web.context.request.RequestContextHolder;
 import org.springframework.web.context.request.ServletRequestAttributes;
 
 import javax.servlet.http.HttpServletRequest;
+import java.lang.reflect.Method;
 import java.util.Objects;
 
 /**
@@ -90,4 +96,37 @@ public class SysLogUtils {
 		return authentication.getName();
 	}
 
+	/**
+	 * 获取spel 定义的参数值
+	 *
+	 * @param context 参数容器
+	 * @param key     key
+	 * @param clazz   需要返回的类型
+	 * @param <T>     返回泛型
+	 * @return 参数值
+	 */
+	public <T> T getValue(EvaluationContext context, String key, Class<T> clazz) {
+		SpelExpressionParser spelExpressionParser = new SpelExpressionParser();
+		Expression expression = spelExpressionParser.parseExpression(key);
+		return expression.getValue(context, clazz);
+	}
+
+	/**
+	 * 获取参数容器
+	 *
+	 * @param arguments       方法的参数列表
+	 * @param signatureMethod 被执行的方法体
+	 * @return 装载参数的容器
+	 */
+	public EvaluationContext getContext(Object[] arguments, Method signatureMethod) {
+		String[] parameterNames = new LocalVariableTableParameterNameDiscoverer().getParameterNames(signatureMethod);
+		EvaluationContext context = new StandardEvaluationContext();
+		if (parameterNames == null) {
+			return context;
+		}
+		for (int i = 0; i < arguments.length; i++) {
+			context.setVariable(parameterNames[i], arguments[i]);
+		}
+		return context;
+	}
 }