Priyanka Priyanka - 6 days ago 3
Java Question

How Convert Complex Json String to Object .?

I wanna convert Json String to Object class. I tried several times with several codes but its gave me a error. Also now its gives null for list

Infor are below

Here is my Json

{
"customer": {
"msisdn": "123456789",
"imsi": "0987654321",
"title": "Mr",
"firstName": "Bilbo",
"lastName": "Baggins",
"dob": "21/10/2006",
"identificationType": "PP",
"identificationNumber": "PP12345DC",
"onBehalfOf": "my_Merchant",
"purchaseCategoryCode": "Game",
"accountType": "Postpaid",
"ownerType": "Paymaster",
"status": "Confirmed",
"requestIdentifier": "REQ12345678",
"responseIdentifier": "RES12345678",
"address": {
"line1": "Bag End",
"line2": "",
"line3": "",
"city": "The Shire",
"country": "Middle Earth"
},
"additionalInfo ": [{
"tag": "creditLimit",
"value": "2500"
}, {
"tag": "creditLimit",
"value": "2500"
}],
"resourceURL": "http://google.com/abc/123"
}
}


Here is my Main class code

public class TestJsonDemo{
public static void main(String[] args) throws JsonParseException, JsonMappingException, IOException {
String testString="{\r\n" +
" \"customer\": {\r\n" +
" \"msisdn\": \"123456789\",\r\n" +
" \"imsi\": \"0987654321\",\r\n" +
" \"title\": \"Mr\",\r\n" +
" \"firstName\": \"Bilbo\",\r\n" +
" \"lastName\": \"Baggins\",\r\n" +
" \"dob\": \"21/10/2006\",\r\n" +
" \"identificationType\": \"PP\",\r\n" +
" \"identificationNumber\": \"PP12345DC\",\r\n" +
" \"onBehalfOf\": \"my_Merchant\",\r\n" +
" \"purchaseCategoryCode\": \"Game\",\r\n" +
" \"accountType\": \"Postpaid\",\r\n" +
" \"ownerType\": \"Paymaster\",\r\n" +
" \"status\": \"Confirmed\",\r\n" +
" \"requestIdentifier\": \"REQ12345678\",\r\n" +
" \"responseIdentifier\": \"RES12345678\",\r\n" +
" \"address\": {\r\n" +
" \"line1\": \"Bag End\",\r\n" +
" \"line2\": \"\",\r\n" +
" \"line3\": \"\",\r\n" +
" \"city\": \"The Shire\",\r\n" +
" \"country\": \"Middle Earth\"\r\n" +
" },\r\n" +
" \"additionalInfo \": [{\r\n" +
" \"tag\": \"creditLimit\",\r\n" +
" \"value\": \"2500\"\r\n" +
" }, {\r\n" +
" \"tag\": \"creditLimit\",\r\n" +
" \"value\": \"2500\"\r\n" +
" }],\r\n" +
" \"resourceURL\": \"http://google.com/abc/123\"\r\n" +
" }\r\n" +
"}";

Gson gson=new Gson();
CustomerInfo customerInfo = gson.fromJson(testString, CustomerInfo.class);
System.out.println(customerInfo);
}
}


Here is my out

ClassPojo [customer = ClassPojo [lastName = Baggins, additionalInfo = null, resourceURL = http://google.com/abc/123, status = Confirmed, msisdn = 123456789, ownerType = Paymaster, identificationType = PP, onBehalfOf = my_Merchant, responseIdentifier = RES12345678, requestIdentifier = REQ12345678, title = Mr, address = ClassPojo [line1 = Bag End, line3 = , country = Middle Earth, city = The Shire, line2 = ], dob = 21/10/2006, purchaseCategoryCode = Game, accountType = Postpaid, imsi = 0987654321, firstName = Bilbo, identificationNumber = PP12345DC]]


But its additionalInfo = null :-(

How to resolve this one.?

Here with I'll attach remaining POJO classes too

Thanks

class CustomerInfo {
private Customer customer;

public Customer getCustomer() {
return customer;
}

public void setCustomer(Customer customer) {
this.customer = customer;
}

@Override
public String toString() {
return "ClassPojo [customer = " + customer + "]";
}
}

class Customer {
private String lastName;

private AdditionalInfo[] additionalInfo;

private String resourceURL;

private String status;

private String msisdn;

private String ownerType;

private String identificationType;

private String onBehalfOf;

private String responseIdentifier;

private String requestIdentifier;

private String title;

private Address address;

private String dob;

private String purchaseCategoryCode;

private String accountType;

private String imsi;

private String firstName;

private String identificationNumber;

public String getLastName() {
return lastName;
}

public void setLastName(String lastName) {
this.lastName = lastName;
}

public AdditionalInfo[] getAdditionalInfo() {
return additionalInfo;
}

public void setAdditionalInfo(AdditionalInfo[] additionalInfo) {
this.additionalInfo = additionalInfo;
}

public String getResourceURL() {
return resourceURL;
}

public void setResourceURL(String resourceURL) {
this.resourceURL = resourceURL;
}

public String getStatus() {
return status;
}

public void setStatus(String status) {
this.status = status;
}

public String getMsisdn() {
return msisdn;
}

public void setMsisdn(String msisdn) {
this.msisdn = msisdn;
}

public String getOwnerType() {
return ownerType;
}

public void setOwnerType(String ownerType) {
this.ownerType = ownerType;
}

public String getIdentificationType() {
return identificationType;
}

public void setIdentificationType(String identificationType) {
this.identificationType = identificationType;
}

public String getOnBehalfOf() {
return onBehalfOf;
}

public void setOnBehalfOf(String onBehalfOf) {
this.onBehalfOf = onBehalfOf;
}

public String getResponseIdentifier() {
return responseIdentifier;
}

public void setResponseIdentifier(String responseIdentifier) {
this.responseIdentifier = responseIdentifier;
}

public String getRequestIdentifier() {
return requestIdentifier;
}

public void setRequestIdentifier(String requestIdentifier) {
this.requestIdentifier = requestIdentifier;
}

public String getTitle() {
return title;
}

public void setTitle(String title) {
this.title = title;
}

public Address getAddress() {
return address;
}

public void setAddress(Address address) {
this.address = address;
}

public String getDob() {
return dob;
}

public void setDob(String dob) {
this.dob = dob;
}

public String getPurchaseCategoryCode() {
return purchaseCategoryCode;
}

public void setPurchaseCategoryCode(String purchaseCategoryCode) {
this.purchaseCategoryCode = purchaseCategoryCode;
}

public String getAccountType() {
return accountType;
}

public void setAccountType(String accountType) {
this.accountType = accountType;
}

public String getImsi() {
return imsi;
}

public void setImsi(String imsi) {
this.imsi = imsi;
}

public String getFirstName() {
return firstName;
}

public void setFirstName(String firstName) {
this.firstName = firstName;
}

public String getIdentificationNumber() {
return identificationNumber;
}

public void setIdentificationNumber(String identificationNumber) {
this.identificationNumber = identificationNumber;
}

@Override
public String toString() {
return "ClassPojo [lastName = " + lastName + ", additionalInfo = "
+ additionalInfo + ", resourceURL = " + resourceURL
+ ", status = " + status + ", msisdn = " + msisdn
+ ", ownerType = " + ownerType + ", identificationType = "
+ identificationType + ", onBehalfOf = " + onBehalfOf
+ ", responseIdentifier = " + responseIdentifier
+ ", requestIdentifier = " + requestIdentifier + ", title = "
+ title + ", address = " + address + ", dob = " + dob
+ ", purchaseCategoryCode = " + purchaseCategoryCode
+ ", accountType = " + accountType + ", imsi = " + imsi
+ ", firstName = " + firstName + ", identificationNumber = "
+ identificationNumber + "]";
}
}

class AdditionalInfo {
private String tag;

private String value;

public String getTag() {
return tag;
}

public void setTag(String tag) {
this.tag = tag;
}

public String getValue() {
return value;
}

public void setValue(String value) {
this.value = value;
}

@Override
public String toString() {
return "ClassPojo [tag = " + tag + ", value = " + value + "]";
}
}

class Address {
private String line1;

private String line3;

private String country;

private String city;

private String line2;

public String getLine1() {
return line1;
}

public void setLine1(String line1) {
this.line1 = line1;
}

public String getLine3() {
return line3;
}

public void setLine3(String line3) {
this.line3 = line3;
}

public String getCountry() {
return country;
}

public void setCountry(String country) {
this.country = country;
}

public String getCity() {
return city;
}

public void setCity(String city) {
this.city = city;
}

public String getLine2() {
return line2;
}

public void setLine2(String line2) {
this.line2 = line2;
}

@Override
public String toString() {
return "ClassPojo [line1 = " + line1 + ", line3 = " + line3
+ ", country = " + country + ", city = " + city + ", line2 = "
+ line2 + "]";
}
}

Answer

You have a small mistake in your JSON file, if you check the name "additionalInfo" you have and extra space at the end and that make it fails

"additionalInfo "

Change to

"additionalInfo"