摘要：
FASTJSON2项目使用了上面的技巧，其中JDKUtils和UnsafeUtils有上面技巧的实现：
JDKUtils：https://github.com/alibaba/fastjson2/blob/fastcode_demo_20221218/core/src/main/java/com/alibaba/fastjson2/util/JDKUtils.java
UnsafeUtils：https://github.com/alibaba/fastjson2/blob/fastcode_demo_20221218/core/src/main/java/com/alibaba/fastjson2/util/UnsafeUtils.java 阅读全文