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java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/json/JsonMapper
IDEA运行SSM项目报错：java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/json/JsonMapper
npm ERR!request to https://registry.npm.taobao.org/@vue%2fcli failed, reason:certificate has expired
安装Vue脚手架出错：npm ERR!reason: certificate has expired。解决方案：重新配置镜像。
AndroidStudio报错：java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myapp
使用AndroidStudio运行项目时报错：java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myapp/com.example.myapp.ShopActivity}: android.view.InflateException: Binary XML file line #16: Er
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