[英]On parsing gson.toJson(obj) giving null
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;
}
}
我应该在方法之外做内部类吗?
还是这是序列化问题?
这很可能是可见性问题。
可以将ShipAddress
移到其自己的类文件中,或使其成为public static
内部类。
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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