freemarker整合springMVC,报错Handler processing failed; nested exception is java.lang.IllegalAccessError:

freemarker整合springMVC

报错：

HTTP Status 500 - Handler processing failed; nested exception is 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.FreeMarkerView

type Exception report

message Handler processing failed; nested exception is 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.FreeMarkerView

description The server encountered an internal error that prevented it from fulfilling this request.

org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is 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.FreeMarkerView
org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1287)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:961)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

找 IllegalAccessError 这个错误显然有些不对，百度之发现碰到的都说这个是freemarker的版本问题，但我上maven库搜索



版本已经用的是最高的，之后发现应该用apache freemarker的版本。如下



总而言之，原因就是freemarker包版本太低了。更换到freemarker-2.3.15以上就可以了。 比如

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