【7.2.4】【rule】增加一个正则提取日期的表达式

kernel-a-rule/src/main/java/cn/stylefeng/roses/kernel/rule/util/DateRegexUtil.java

@@ -0,0 +1,41 @@
+package cn.stylefeng.roses.kernel.rule.util;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * 日期正则工具
+ *
+ * @author fengshuonan
+ * @date 2022/8/2 15:04
+ */
+public class DateRegexUtil {
+
+    /**
+     * 从指定字符串中提取日期的字符
+     *
+     * @author fengshuonan
+     * @date 2022/8/2 15:04
+     */
+    public static String extractDate(String originStr) {
+
+        String datePatternReg = ".*([0-9]{4}-[0-9]{2}-[0-9]{2}).*";
+        String simpleDatePatternReg = ".*([0-9]{2}-[0-9]{2}).*";
+        Pattern datePattern = Pattern.compile(datePatternReg);
+        Pattern simpleDatePattern = Pattern.compile(simpleDatePatternReg);
+
+        // 首先用年月日的表达式匹配
+        Matcher datePatternMatcher = datePattern.matcher(originStr);
+        if (datePatternMatcher.find()) {
+            return datePatternMatcher.group(1);
+        } else {
+            Matcher simpleDatePatternMatcher = simpleDatePattern.matcher(originStr);
+            if (simpleDatePatternMatcher.find()) {
+                return simpleDatePatternMatcher.group(1);
+            } else {
+                return "";
+            }
+        }
+    }
+
+}