Can not find the tag library descriptor for "http://java.sun.com/jsp/
jstl/core"
pow.xml 中也有错cannot read lifecycle mapping metadata for artfact什么的这是怎么回事儿呢
Can not find the tag library descriptor for "http://java.sun.com/jsp/
jstl/core"
是因为你的jsp需要导入jstl.jar 包。这个包在课程中是没有介绍的。所以需要你自己去网上找下相关的配置
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>