springMVC 整合freemarker 出现版本错误

java.lang.IllegalAccessError: tried to access method freemarker.ext.servlet.AllHttpScopesHashModel.<init>(Lfreemarker/template/ObjectWrapper;Ljavax/servlet/ServletContext;Ljavax/servlet/http/HttpServletRequest;)V from class org.springframework.web.servlet.view.freemarker.Fr eeMarkerView

 

原因是freemarker包版本太低了。更换到freemarker-2.3.15以上就可以了。

我是用到2.3.20

<dependency>
  <groupId>org.freemarker</groupId>
  <artifactId>freemarker-gae</artifactId>
  <version>2.3.20</version>
</dependency>