update 优化 CryptoFilter null判断工具

疯狂的狮子Li

2023-07-19 77ea3ce51464e69915922b276ca4d45bbd15e2b1

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/**
 * 演示用例
 * copy from https://github.com/PowerJob/PowerJob/tree/master/powerjob-worker-samples/src/main/java/tech/powerjob/samples
 */
 
package org.dromara.job;