struts2--java.lang.IllegalAccessException: Class ognl.OgnlRuntime can not access a member of

这个问题是我碰到的一个比较纠结的问题，如果第一次碰到肯定能让你也很纠结，哈哈

[c-sharp] view plaincopyprint?
01.2010-10-19 18:27:22 com.opensymphony.xwork2.util.logging.jdk.JdkLogger warn
02.警告: Error setting expression 'nnew.nTitle' with value '[Ljava.lang.String;@df804e'
03.ognl.NoSuchPropertyException: com.center.vo.News_Table.nTitle [java.lang.IllegalAccessException: Class ognl.OgnlRuntime can not access a member of class com.center.vo.News_Table with modifiers "private"]
04.    at ognl.OgnlRuntime.setFieldValue(OgnlRuntime.java:1663)
05.    at ognl.ObjectPropertyAccessor.setPossibleProperty(ObjectPropertyAccessor.java:87)
06.    at ognl.ObjectPropertyAccessor.setProperty(ObjectPropertyAccessor.java:162)
07.    at com.opensymphony.xwork2.ognl.accessor.ObjectAccessor.setProperty(ObjectAccessor.java:27)
08.    at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2245)
09.    at ognl.ASTProperty.setValueBody(ASTProperty.java:127)
10.    at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220)
11.    at ognl.SimpleNode.setValue(SimpleNode.java:301)
12.    at ognl.ASTChain.setValueBody(ASTChain.java:227)
13.    at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220)
14.    at ognl.SimpleNode.setValue(SimpleNode.java:301)
15.    at ognl.Ognl.setValue(Ognl.java:737)
16.    at com.opensymphony.xwork2.ognl.OgnlUtil.setValue(OgnlUtil.java:209)
17.    at com.opensymphony.xwork2.ognl.OgnlValueStack.trySetValue(OgnlValueStack.java:173)
18.    at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:160)
19.    at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:151)
20.    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.setParameters(ParametersInterceptor.java:288)
21.    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:199)
22.    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
23.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
24.    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
25.    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
26.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
27.    at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)
28.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
29.    at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
30.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
31.    at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
32.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
33.    at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243)
34.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
35.    at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
36.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
37.    at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
38.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
39.    at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)
40.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
41.    at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:142)
42.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
43.    at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:166)
44.    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
45.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
46.    at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
47.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
48.    at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
49.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
50.    at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190)
51.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
52.    at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
53.    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
54.    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
55.    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:485)
56.    at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
57.    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
58.    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
59.    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
60.    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
61.    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
62.    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
63.    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
64.    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
65.    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
66.    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
67.    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
68.    at java.lang.Thread.run(Unknown Source)
69.Caused by: java.lang.IllegalAccessException: Class ognl.OgnlRuntime can not access a member of class com.center.vo.News_Table with modifiers "private"
70.    at sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
71.    at java.lang.reflect.Field.doSecurityCheck(Unknown Source)
72.    at java.lang.reflect.Field.getFieldAccessor(Unknown Source)
73.    at java.lang.reflect.Field.set(Unknown Source)
74.    at ognl.OgnlRuntime.setFieldValue(OgnlRuntime.java:1655)

引起这种原因就是属性名称的不规范！！就像上面的错误信息中写出的，"nTitle"这样的属性名生成set和get方法是不规范的！所以struts2用DomainModel传递参数，会引起struts2的"误会"！！是不是很纠结啊