[英]On parsing gson.toJson(obj) giving null
wWhen I am passing object of local-inner-class ShipAddress
to toJson()
method of Gson
class this is returning null on parsing it. w当我将本地内部类ShipAddress
对象传递给Gson
类的toJson()
方法时,在解析它时返回null。
public class CrusialDateRest {
public String getShippingAddressesDetails() {
Gson gson = new GsonBuilder().create();
try {
Collection<ImplAddress> savedAddressBeans = new ArrayList<ImplAddress>();
Collection<CtFlexField> countryFields = new ArrayList<CtFlexField>();
Collection<CtFlexField> debitorFields = new ArrayList<CtFlexField>();
class ShipAddress{
Collection<ImplAddress> savedAddressBean = new ArrayList<ImplAddress>();
Collection<CtFlexField> countryField = new ArrayList<CtFlexField>();
Collection<CtFlexField> debitorField = new ArrayList<CtFlexField>();
ShipAddress( Collection<ImplAddress> savedAddressBeans, Collection<CtFlexField> countryFields,Collection<CtFlexField> debitorFields){
savedAddressBean=savedAddressBeans;
countryField=countryFields;
debitorField=debitorFields;
}
}
String addrId= XmlParser.getNodeValue(address, Statics.BUYFLOW_NAMESPACE, "AddressId");
String addrStreet1 = XmlParser.getNodeValue(address, Statics.BUYFLOW_NAMESPACE, "AddrStreet1");
String addrStreet2 = XmlParser.getNodeValue(address, Statics.BUYFLOW_NAMESPACE, "AddrStreet2");
String addrStreet3 = XmlParser.getNodeValue(address, Statics.BUYFLOW_NAMESPACE, "AddrStreet3");
ImplAddress impladdress = new ImplAddress();
impladdress.setAddressId(addrId);
impladdress.setAddrStreet1(addrStreet1);
impladdress.setAddrStreet2(addrStreet2);
impladdress.setAddrStreet3(addrStreet3);
savedAddressBeans.add(impladdress);
}
CtFlexField[] flexField = flexFields.getFlexField();
for (CtFlexField flex : flexField) {
if(flex.getBundle().equalsIgnoreCase("Countries")){
countryFields.add(flex);
}
else if(flex.getBundle().equalsIgnoreCase("CommonBundle")){
debitorFields.add(flex);
}
}
jsonResponse = gson.toJson(new ShipAddress(savedAddressBeans,countryFields,debitorFields));
OUT.debug("jsonResponse--"+jsonResponse);
} catch (Exception e) {
OUT.error("rest method getShippingAddresses error", e);
}
return jsonResponse;
}
}
Should I make inner class outside method? 我应该在方法之外做内部类吗?
Or is this a serialization issue? 还是这是序列化问题?
It's most likely a visibility issue. 这很可能是可见性问题。
Either move ShipAddress
into its own class file, or make it a public static
inner class. 可以将ShipAddress
移到其自己的类文件中,或使其成为public static
内部类。
Note that public static classes cannot be declared inside of methods, you would have to move the class out of getShippingAddressDetails()
method. 请注意,不能在方法内部声明公共静态类,您必须将类移出getShippingAddressDetails()
方法。
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