今天使用MyBatisPlus生成代码，出现NoClassDefFoundError: freemarker/template/Configuration，代码无法生成。异常如下：

Exception in thread "main" java.lang.NoClassDefFoundError: freemarker/template/Configuration
    at com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine.init(FreemarkerTemplateEngine.java:45)
    at com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine.init(FreemarkerTemplateEngine.java:38)
    at com.baomidou.mybatisplus.generator.AutoGenerator.execute(AutoGenerator.java:98)
    at DBCodeGenerator.main(DBCodeGenerator.java:99)
Caused by: java.lang.ClassNotFoundException: freemarker.template.Configuration
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 4 more

解决方案（导入依赖即可）：

    <dependency>
        <groupId>org.freemarker</groupId>
        <artifactId>freemarker</artifactId>
        <version>2.3.28</version>
    </dependency>