ManyToOne匹配不到数据时，ID会给个0。同时点击查看或编辑按钮，会出NullPointException。

[cfly]

版本情况

JDK版本： openjdk_8_302
erupt版本： 1.8.5 （请确保最新尝试是否还有问题）

问题描述（包括截图）

ManyToOne匹配不到数据时，ID会给个0。同时点击查看或编辑按钮，会出NullPointException。

1. 复现代码

    @ManyToOne
    @JoinColumn(name="task_id")
    @EruptField(
            views = {@View(title = "拜访照片", column = "img", type = ViewType.IMAGE, show = false ),
                    @View(title = "拜访照片val", column = "img", show = false ),
                    @View(title = "拜访ID", column = "id", show = false )
            }
    )
    private VisitTask visitTask;

2. 堆栈信息
   java.lang.NullPointerException: null
   at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:57) ~[na:1.8.0_302]
   at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:36) ~[na:1.8.0_302]
   at java.lang.reflect.Field.get(Field.java:393) ~[na:1.8.0_302]
   at xyz.erupt.core.util.EruptUtil.generateEruptDataMap(EruptUtil.java:55) ~[erupt-core-1.8.5.jar!/:na]
   at xyz.erupt.core.controller.EruptDataController.getEruptDataById(EruptDataController.java:93) ~[erupt-core-1.8.5.jar!/:na]
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_302]
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_302]
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_302]
   at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_302]
   at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197) ~[spring-web-5.3.9.jar!/:5.3.9]
   at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141) ~[spring-web-5.3.9.jar!/:5.3.9]
   at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.3.9.jar!/:5.3.9]
   at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.9.jar!/:5.3.9]
   at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.9.jar!/:5.3.9]
   at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.9.jar!/:5.3.9]
   at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1064) ~[spring-webmvc-5.3.9.jar!/:5.3.9]
   at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.9.jar!/:5.3.9]
   at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.9.jar!/:5.3.9]
   at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.9.jar!/:5.3.9]
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.52.jar!/:na]
   at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.9.jar!/:5.3.9]
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.52.jar!/:na]
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.52.jar!/:na]
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar!/:na]
   at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.52.jar!/:na]
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.52.jar!/:na]
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar!/:na]
   at xyz.erupt.security.interceptor.HttpServletRequestFilter.doFilter(HttpServletRequestFilter.java:48) ~[erupt-security-1.8.5.jar!/:na]

3. 测试涉及到的文件（注意脱密）