优化spel表达式解析工具类

src/main/java/cn/iocoder/dashboard/common/annotation/BizTracing.java

@@ -13,7 +13,13 @@ import java.lang.annotation.*;
  */
 public @interface BizTracing {
 
+    /**
+     * 交易流水tag名
+     */
     String BIZ_ID_TAG = "bizId";
+    /**
+     * 交易类型tag名
+     */
     String BIZ_TYPE_TAG = "bizType";
 
     String bizId();

src/main/java/cn/iocoder/dashboard/common/annotation/BizTracingAop.java

@@ -21,8 +21,8 @@ public class BizTracingAop {
 
     @Around(value = "@annotation(bizTracing)")
     public void tagBizInfo(ProceedingJoinPoint joinPoint, BizTracing bizTracing) {
-        String bizId = SpElUtil.analysisSpEl(bizTracing.bizId(), joinPoint);
-        String bizType = SpElUtil.analysisSpEl(bizTracing.bizType(), joinPoint);
+        String bizId = (String) SpElUtil.analysisSpEl(bizTracing.bizId(), joinPoint);
+        String bizType = (String) SpElUtil.analysisSpEl(bizTracing.bizType(), joinPoint);
         if (StrUtil.isBlankIfStr(bizId)) {
             log.error("empty biz: bizId[{}], bizType[{}].", bizId, bizType);
             return;

src/main/java/cn/iocoder/dashboard/util/sping/SpElUtil.java

@@ -9,15 +9,31 @@ import org.springframework.expression.spel.standard.SpelExpressionParser;
 import org.springframework.expression.spel.support.StandardEvaluationContext;
 
 import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 
+/**
+ * SpEl解析类
+ *
+ * @author mashu
+ */
 public class SpElUtil {
 
+    private static SpelExpressionParser parser = new SpelExpressionParser();
+    private static DefaultParameterNameDiscoverer nameDiscoverer = new DefaultParameterNameDiscoverer();
+
     private SpElUtil() {
     }
 
-    public static String analysisSpEl(String spElString, ProceedingJoinPoint joinPoint) {
-        SpelExpressionParser parser = new SpelExpressionParser();
-        DefaultParameterNameDiscoverer nameDiscoverer = new DefaultParameterNameDiscoverer();
+    /**
+     * 解析切面SpEL
+     *
+     * @param spElString 表达式
+     * @param joinPoint  切面点
+     * @return 执行界面
+     */
+    public static Object analysisSpEl(String spElString, ProceedingJoinPoint joinPoint) {
         // 通过joinPoint获取被注解方法
         MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature();
         Method method = methodSignature.getMethod();
@@ -33,8 +49,22 @@ public class SpElUtil {
         for (int i = 0; i < args.length; i++) {
             context.setVariable(paramNames[i], args[i]);
         }
-        Object value = expression.getValue(context);
-        return value == null ? "null" : value.toString();
+        return expression.getValue(context);
+    }
 
+    /**
+     * 批量解析切面SpEL
+     *
+     * @param spElStrings 表达式
+     * @param joinPoint   切面点
+     * @return 执行界面
+     */
+    public static Map<String, Object> analysisSpEls(List<String> spElStrings, ProceedingJoinPoint joinPoint) {
+        if (null == spElStrings) {
+            return null;
+        }
+        Map<String, Object> resultMap = new HashMap<>(spElStrings.size());
+        spElStrings.forEach(expression -> resultMap.put(expression, analysisSpEl(expression, joinPoint)));
+        return resultMap;
     }
 }