examples of spring-framework from http://babdev.blogspot.co.at

To Build :
  
    Change to the sub project root directory, and issue the mvn package command.
  
    >cd <sub-project-root>
    >mvn package 
    

TroubleShooting :

  Problem : 
      STS gives an error, "Dynamic Web Module 3.0 requires Java 1.6 or newer”

  Solution : 
      http://qussay.com/2013/09/13/solving-dynamic-web-module-3-0-requires-java-1-6-or-newer-in-maven-projects/
      
      1) Check that your project is configured to use Java 1.7.
      
          Right click your project > Properties > Java Compiler and set “Compiler compliance level” to 1.7.
        
      2) Next select Project Facets > Java and set its version to 1.7
      
          If you didn’t find 1.7, add it to eclipse :
          Navigate to eclipse Preferences > Java > Installed JREs, click Add, and locate your installed Java path.
        
      3) Open your project’s pom.xml and add this plugin tag

          <build>
              <plugins>
                  <plugin>
                  <groupId>org.apache.maven.plugins</groupId>
                  <artifactId>maven-compiler-plugin</artifactId>
                  <version>3.1</version>
                  <configuration>
                      <source>1.7</source>
                      <target>1.7</target>
                  </configuration>
              </plugin>
              </plugins>
          </build>
      
      4) Finally, right click on your project > Maven > Update Project…