PROJECT BUILD ERROR: 'DEPENDENCIES.DEPENDENCY.VERSION' FOR JAVAX.SERVLET:JSTL:JAR IS MISSING

The reason for this is probably that the version of the dependency is uniformly configured in the configuration file, and the newly added dependency cannot find the version (Because the version number is uniformly stipulated).
If you add dependencies yourself, you must configure a dependencyManagement.

solution¶

Outside the dependencies tab, add dependencyManagement

<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>828.com</groupId>
    <artifactId>8-28-01</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <dependencyManagement>
        <dependencies>

            <dependency>
                <groupId>org.apache.tomcat.embed</groupId>
                <artifactId>tomcat-embed-jasper</artifactId>
                <scope>provided</scope>
            </dependency>

            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jstl</artifactId>
                <scope>provided</scope>
            </dependency>

        </dependencies>
    </dependencyManagement>
</project>