The compilation problem is also related to the maven compilation level setting

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.6</source>
<target >1.6</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>

Error when loading web project: Tomcat version 6.0 only supports J2EE 1.2, 1.3, 1.4, and Java EE 5 Web modul
2013 -10-22 10:42 8479 people read comments (3) Collection report The servlet project developed

with eclipse cannot be loaded to the tomcat6.0 server because the servlet version is too high

<installed facet="jst.web" version=" 3.0"/> Just change version="3.0" to version="2.5" and restart eclipse! ! !

Specific steps:

Find your eclipse: D:\eclipse\workspace-jee\project name\.settings\org.eclipse.wst.common.project.facet.core.xml this configuration file, put <installed facet="jst.web" version ="3.0"/> Just change version="3.0" to version="2.5" and restart eclipse! ! !

Or download a higher version of Tomcat (above Tomcat 7.0).


===================================================== ========
Resolve "Dynamic Web Module 3.0 requires Java 1.6 or newer." error ////////////////// whether it is the top-level employeeBenefits-main that depends on Also
///////////////////////////////////////bit, there will be the most underlying layer and all JAR, no Hold it in the lower layer, if the compiled version fails, the jar cannot be
compiled . Add to the <build></build> tag of the pom.xml of the project:
[xml] view plaincopyprint?

    <plugins> 
        <plugin> 
            <groupId>org.apache.maven.plugins</groupId> 
            <artifactId>maven-compiler-plugin</artifactId> 
            <version>2.3.2</version> 
            <configuration> 
                <source>1.6</source> 
                <target>1.6</target> 
            </configuration> 
        </plugin> 
    < /plugins> 


Save, right-click on the project folder after the project is built, select Maven->Update Project Configuration, the problem is solved. Changed the pom file to update the project