net.sf.json.JSONException: There is a cycle in the hierarchy
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需要在类中添加过滤，过滤掉hibernate配置文件中的多对多、多对一关系。 JsonConfig config = new JsonConfig(); config.setJsonPropertyFilter(new PropertyFilter() { public boolean apply(Object source,String name,Object value) { if (name.equals("emisTPersonorgs")) { return true; } else { return false; } } }); JSONObject json = JSONObject.fromObject(reader,config); 这个问题也涉及到以下这个异常：
2010-9-14 15:24:25 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet action threw exception java.lang.AbstractMethodError: oracle.jdbc.driver.T4CConnection.getClientInfo()Ljava/util/Properties; at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.logicalcobwebs.proxool.ProxyConnection.invoke(ProxyConnection.java:68) at org.logicalcobwebs.cglib.proxy.Proxy$ProxyImpl$$EnhancerByCGLIB$$b7939e3d.getClientInfo(<generated>) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.commons.beanutils.PropertyUtilsBean.invokeMethod(PropertyUtilsBean.java:2155) at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1323) at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:762) at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:837) at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:426) at net.sf.json.JSONObject._fromBean(JSONObject.java:918) at net.sf.json.JSONObject.fromObject(JSONObject.java:168) at net.sf.json.AbstractJSON._processValue(AbstractJSON.java:265) at net.sf.json.JSONObject._processValue(JSONObject.java:2808) at net.sf.json.JSONObject.processValue(JSONObject.java:2874) at net.sf.json.JSONObject.setInternal(JSONObject.java:2889) at net.sf.json.JSONObject.setValue(JSONObject.java:1577) at net.sf.json.JSONObject._fromBean(JSONObject.java:934) at net.sf.json.JSONObject.fromObject(JSONObject.java:168) at net.sf.json.AbstractJSON._processValue(AbstractJSON.java:265) at net.sf.json.JSONObject._processValue(JSONObject.java:2808) at net.sf.json.JSONObject.processValue(JSONObject.java:2874) at net.sf.json.JSONObject.setInternal(JSONObject.java:2889) at net.sf.json.JSONObject.setValue(JSONObject.java:1577) at net.sf.json.JSONObject._fromBean(JSONObject.java:934) at net.sf.json.JSONObject.fromObject(JSONObject.java:168) at net.sf.json.AbstractJSON._processValue(AbstractJSON.java:265) at net.sf.json.JSONObject._processValue(JSONObject.java:2808) at net.sf.json.JSONObject.processValue(JSONObject.java:2874) at net.sf.json.JSONObject.setInternal(JSONObject.java:2889) at net.sf.json.JSONObject.setValue(JSONObject.java:1577) at net.sf.json.JSONObject._fromBean(JSONObject.java:934) at net.sf.json.JSONObject.fromObject(JSONObject.java:168) at net.sf.json.AbstractJSON._processValue(AbstractJSON.java:265) at net.sf.json.JSONObject._processValue(JSONObject.java:2808) at net.sf.json.JSONObject.processValue(JSONObject.java:2874) at net.sf.json.JSONObject.setInternal(JSONObject.java:2889) at net.sf.json.JSONObject.setValue(JSONObject.java:1577) at net.sf.json.JSONObject._fromBean(JSONObject.java:934) at net.sf.json.JSONObject.fromObject(JSONObject.java:168) at net.sf.json.AbstractJSON._processValue(AbstractJSON.java:265) at net.sf.json.JSONObject._processValue(JSONObject.java:2808) at net.sf.json.JSONObject.processValue(JSONObject.java:2874) at net.sf.json.JSONObject.setInternal(JSONObject.java:2889) at net.sf.json.JSONObject.setValue(JSONObject.java:1577) at net.sf.json.JSONObject._fromBean(JSONObject.java:934) at net.sf.json.JSONObject.fromObject(JSONObject.java:168) at net.sf.json.AbstractJSON._processValue(AbstractJSON.java:265) at net.sf.json.JSONArray._processValue(JSONArray.java:2514) at net.sf.json.JSONArray.processValue(JSONArray.java:2539) at net.sf.json.JSONArray.addValue(JSONArray.java:2526) at net.sf.json.JSONArray._fromArray(JSONArray.java:982) at net.sf.json.JSONArray.fromObject(JSONArray.java:133) at net.sf.json.AbstractJSON._processValue(AbstractJSON.java:237) at net.sf.json.JSONArray._processValue(JSONArray.java:2514) at net.sf.json.JSONArray.processValue(JSONArray.java:2539) at net.sf.json.JSONArray.addValue(JSONArray.java:2526) at net.sf.json.JSONArray._fromCollection(JSONArray.java:1057) at net.sf.json.JSONArray.fromObject(JSONArray.java:123) at net.sf.json.AbstractJSON._processValue(AbstractJSON.java:237) at net.sf.json.JSONObject._processValue(JSONObject.java:2808) at net.sf.json.JSONObject.processValue(JSONObject.java:2874) at net.sf.json.JSONObject.setInternal(JSONObject.java:2889) at net.sf.json.JSONObject.setValue(JSONObject.java:1577) at net.sf.json.JSONObject._fromBean(JSONObject.java:934) at net.sf.json.JSONObject.fromObject(JSONObject.java:168) at cn.gov.cepb.emis.emcase.struts.casetask.CaseTaskAction.getPersonList(CaseTaskAction.java:109) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269) at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462) at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378) at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:99) at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109) at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.SessionFixationProtectionFilter.doFilterHttp(SessionFixationProtectionFilter.java:67) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.providers.anonymous.AnonymousProcessingFilter.doFilterHttp(AnonymousProcessingFilter.java:105) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.rememberme.RememberMeProcessingFilter.doFilterHttp(RememberMeProcessingFilter.java:116) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter.doFilterHttp(SecurityContextHolderAwareRequestFilter.java:91) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.basicauth.BasicProcessingFilter.doFilterHttp(BasicProcessingFilter.java:174) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:277) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:89) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.concurrent.ConcurrentSessionFilter.doFilterHttp(ConcurrentSessionFilter.java:99) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:175) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619)
这个问题我在网上查询了一下，很多人都是说是oracle驱动的问题，我所产生的这个异常是因为在json过滤的时候没有把实体中其他对象关系过滤掉，所以抛出异常 （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |