Class CronValidator
java.lang.Object
cloud.opencode.base.cron.CronValidator
Cron Validator - Cron Expression Validation Utility
Cron验证器 - Cron表达式验证工具类
Validates cron expressions for syntax correctness and optional minimum interval.
Supports all syntax recognized by CronExpression including aliases,
special characters (L, W, #), and macros.
验证Cron表达式的语法正确性和可选的最小间隔。
支持 CronExpression 识别的所有语法,包括别名、
特殊字符(L、W、#)和宏。
Features | 主要功能:
- Syntax validation via parse - 通过解析进行语法验证
- Minimum interval enforcement - 最小间隔强制检查
- Estimated interval calculation - 预估间隔计算
- Boolean isValid check (no exception) - 布尔isValid检查(无异常)
Usage Examples | 使用示例:
// Quick check | 快速检查
CronValidator.isValid("0 9 * * MON-FRI") // true
CronValidator.isValid("invalid") // false
// Validate with exception | 验证(抛异常)
CronValidator.validate("0 9 * * MON-FRI"); // OK
// Minimum interval check | 最小间隔检查
CronValidator.validate("* * * * * *", Duration.ofSeconds(5)); // throws
Security | 安全性:
- Thread-safe: Yes (stateless static methods) - 线程安全: 是(无状态静态方法)
- Null-safe: Yes - 空值安全: 是
- Since:
- JDK 25, opencode-base-cron V1.0.0
- Author:
- Leon Soo www.LeonSoo.com
- See Also:
-
Method Summary
Modifier and TypeMethodDescriptionstatic DurationgetEstimatedInterval(String expression) Gets the estimated interval between consecutive executions 获取连续执行之间的预估间隔static booleanChecks if a cron expression is valid 检查Cron表达式是否有效static voidValidates a cron expression 验证Cron表达式static voidValidates a cron expression with a minimum interval check 验证Cron表达式并检查最小间隔
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Method Details
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validate
Validates a cron expression 验证Cron表达式- Parameters:
expression- the cron expression | Cron表达式- Throws:
OpenCronException- if invalid | 如果无效
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validate
Validates a cron expression with a minimum interval check 验证Cron表达式并检查最小间隔- Parameters:
expression- the cron expression | Cron表达式minInterval- the minimum interval between executions | 执行之间的最小间隔- Throws:
OpenCronException- if invalid or interval too short | 如果无效或间隔太短
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isValid
Checks if a cron expression is valid 检查Cron表达式是否有效- Parameters:
expression- the cron expression | Cron表达式- Returns:
- true if valid | 如果有效返回true
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getEstimatedInterval
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