at java.lang.reflect.AccessibleObject.setAccessible0(AccessibleObject.java:118)
at java.lang.reflect.AccessibleObject.setAccessible(AccessibleObject.java:108)
at com.google.gson.internal.ConstructorConstructor.newDefaultConstructor(ConstructorConstructor.java:84)
at com.google.gson.internal.ConstructorConstructor.getConstructor(ConstructorConstructor.java:66)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:64)
at com.google.gson.internal.bind.MiniGson.getAdapter(MiniGson.java:92)
at com.google.gson.internal.bind.ArrayTypeAdapter$1.create(ArrayTypeAdapter.java:45)
at com.google.gson.internal.bind.MiniGson.getAdapter(MiniGson.java:92)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.<init>(ReflectiveTypeAdapterFactory.java:75)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:74)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:112)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:65)
at com.google.gson.internal.bind.MiniGson.getAdapter(MiniGson.java:92)
at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:53)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.write(ReflectiveTypeAdapterFactory.java:82)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:194)
at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:66)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.write(ReflectiveTypeAdapterFactory.java:82)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:194)
at com.google.gson.internal.bind.ObjectTypeAdapter.write(ObjectTypeAdapter.java:102)
at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:66)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.write(CollectionTypeAdapterFactory.java:93)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.write(CollectionTypeAdapterFactory.java:57)
at com.google.gson.Gson.toJson(Gson.java:512)
at com.google.gson.Gson.toJson(Gson.java:491)
at com.google.gson.Gson.toJson(Gson.java:446)
at com.google.gson.Gson.toJson(Gson.java:426)
at com.hzq.interviewserver.action.UserAction.getAllTopic(UserAction.java:105)
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 com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:133)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:142)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:166)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:485)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
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:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:600)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1703)
at java.lang.Thread.run(Thread.java:619)
6 个解决方案
#1
各位大神帮帮忙，小弟实在找不出是什么问题
#2
public String getAllTopic(){
String result = "";
if ("true".equals(isAndroid)) {// 来自手机端请求
System.out.println("categoryid="+categoryid);
tList = userService.getAllTopic(Integer.parseInt(categoryid));
System.out.println("tList="+tList);
if(tList != null){
// GsonBuilder gBuilder = new GsonBuilder();
// Gson g = gBuilder.create();
try {
Gson g = new Gson();
System.out.println("g="+g);
result = g.toJson(tList);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}else{
result = "topic_failed";
}
write(result);
}
return "success_android";
}
在这句报的错result = g.toJson(tList);
String result = "";
if ("true".equals(isAndroid)) {// 来自手机端请求
System.out.println("categoryid="+categoryid);
tList = userService.getAllTopic(Integer.parseInt(categoryid));
System.out.println("tList="+tList);
if(tList != null){
// GsonBuilder gBuilder = new GsonBuilder();
// Gson g = gBuilder.create();
try {
Gson g = new Gson();
System.out.println("g="+g);
result = g.toJson(tList);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}else{
result = "topic_failed";
}
write(result);
}
return "success_android";
}
在这句报的错result = g.toJson(tList);
#3
该回复于2014-03-16 17:15:17被管理员删除
#4
tList里面的对象是什么类型，这个类型的构造方法的代码贴出来看看，是不是没有无参构造方法导致的。
#5
constructor 的问题
#6
为什么我的有无参的构造方法，还是没有用
#1
各位大神帮帮忙，小弟实在找不出是什么问题
#2
public String getAllTopic(){
String result = "";
if ("true".equals(isAndroid)) {// 来自手机端请求
System.out.println("categoryid="+categoryid);
tList = userService.getAllTopic(Integer.parseInt(categoryid));
System.out.println("tList="+tList);
if(tList != null){
// GsonBuilder gBuilder = new GsonBuilder();
// Gson g = gBuilder.create();
try {
Gson g = new Gson();
System.out.println("g="+g);
result = g.toJson(tList);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}else{
result = "topic_failed";
}
write(result);
}
return "success_android";
}
在这句报的错result = g.toJson(tList);
String result = "";
if ("true".equals(isAndroid)) {// 来自手机端请求
System.out.println("categoryid="+categoryid);
tList = userService.getAllTopic(Integer.parseInt(categoryid));
System.out.println("tList="+tList);
if(tList != null){
// GsonBuilder gBuilder = new GsonBuilder();
// Gson g = gBuilder.create();
try {
Gson g = new Gson();
System.out.println("g="+g);
result = g.toJson(tList);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}else{
result = "topic_failed";
}
write(result);
}
return "success_android";
}
在这句报的错result = g.toJson(tList);
#3
该回复于2014-03-16 17:15:17被管理员删除
#4
tList里面的对象是什么类型，这个类型的构造方法的代码贴出来看看，是不是没有无参构造方法导致的。
#5
constructor 的问题
#6
为什么我的有无参的构造方法，还是没有用