防抖

cash-common/cash-common-tools/src/main/java/com/czg/Main.java

@@ -1,11 +0,0 @@
-package com.czg;
-
-/**
- * @author tankaikai
- * @since ${YEAR}-${MONTH}-${DAY} ${TIME}
- */
-public class Main {
-    public static void main(String[] args) {
-        System.out.println("Hello world!");
-    }
-}

cash-common/cash-common-tools/src/main/java/com/czg/SysParamsDTO2.java

@@ -1,27 +0,0 @@
-package com.czg;
-
-import com.czg.validator.group.DefaultGroup;
-import com.czg.validator.group.InsertGroup;
-import com.czg.validator.group.UpdateGroup;
-import jakarta.validation.constraints.NotBlank;
-import jakarta.validation.constraints.NotNull;
-import lombok.Data;
-import lombok.experimental.Accessors;
-
-/**
- * @author GYJoker
- */
-@Data
-@Accessors(chain = true)
-public class SysParamsDTO2 {
-
-    @NotBlank(message = "参数编码不能为空", groups = {InsertGroup.class, UpdateGroup.class})
-    private String paramCode;
-
-    @NotBlank(message = "参数值不能为空", groups = DefaultGroup.class)
-    private String paramValue;
-
-    @NotNull(message = "参数类型不能为空", groups = {UpdateGroup.class, UpdateGroup.class})
-    private Integer paramType;
-    private String remark;
-}

cash-common/cash-common-tools/src/main/java/com/czg/utils/SpELUtil.java

@@ -0,0 +1,53 @@
+package com.czg.utils;
+
+import org.aspectj.lang.ProceedingJoinPoint;
+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.spel.standard.SpelExpressionParser;
+import org.springframework.expression.spel.support.StandardEvaluationContext;
+
+import java.lang.reflect.Method;
+import java.util.Objects;
+
+/**
+ * @author ww
+ */
+public class SpELUtil {
+    /**
+     * 用于SpEL表达式解析.
+     */
+    private static final SpelExpressionParser PARSER = new SpelExpressionParser();
+
+    /**
+     * 用于获取方法参数定义名字.
+     */
+    private static final DefaultParameterNameDiscoverer NAME_DISCOVERER = new DefaultParameterNameDiscoverer();
+
+    /**
+     * 解析SpEL表达式
+     */
+    public static String getByEl(String spElStr, ProceedingJoinPoint joinPoint) {
+        // 通过joinPoint获取被注解方法
+        MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature();
+        Method method = methodSignature.getMethod();
+        // 使用Spring的DefaultParameterNameDiscoverer获取方法形参名数组
+        String[] paramNames = NAME_DISCOVERER.getParameterNames(method);
+//        // 解析过后的Spring表达式对象
+        Expression expression = PARSER.parseExpression(spElStr);
+        // Spring的表达式上下文对象
+        EvaluationContext context = new StandardEvaluationContext();
+        // 通过joinPoint获取被注解方法的形参
+        Object[] args = joinPoint.getArgs();
+        // 给上下文赋值
+        for (int i = 0; i < args.length; i++) {
+            assert paramNames != null;
+            context.setVariable(paramNames[i], args[i]);
+        }
+        if(expression.getValue(context)==null){
+            return "";
+        }
+        return Objects.requireNonNull(expression.getValue(context)).toString();
+    }
+}