Release v2.2.0

[gudqs7]

1.fix: 修复 @RequestMapping 注解 path/value 字段类型错误问题 #29
2:refactor: 代码结构大变动

English：
1.fix: fix @RequestMapping annotation pathvalue field type error problem #29
2:refactor: Big changes in code structure

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This discussion was created from the release Release v2.2.0.