##It is possible when there is a red cross when importing the web project The path environment does not support the need to configure the path of your own computer, so you need to build pathThere is a java code error or...jsp file error (https://img-blog.csdnimg.cn/20190613172126598.png)Right-click the project name and select Build Path—Configure Build PathThe solution to the red cross when importing a project in eclipse: first right-click the project name, select [Configure Build Path] in [Build Path]; then select remove in Libraries; and finally add the JRE environment.
#Then The red cross is gone and the project can run normally
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