前期准备工作
The compiler compliance specified is 1.5 but a JRE 13 is used
<build>
<finalName>beauty_ssm</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>13</source>
<target>13</target>
<encoding>UTF8</encoding>
</configuration>
</plugin>
</plugins>
</build>
Alt+F5
修改Dynamic Web Module
在项目路径下beauty_ssm\.settings
修改web.xml
删掉web.xml