[英]Deserializing json with GSON in Java
I have Json我有 Json
{"0x3b198e26e473b8fab2085b37978e36c9de5d7f68":{"usd":541.56},"0x54523d5fb56803bac758e8b10b321748a77ae9e9":{"usd":0.059097},"0x330540a9d998442dcbc396165d3ddc5052077bb1":{"usd":1.649e-09}}
Next, I am using gson trying to convert json to price object接下来,我正在使用 gson 尝试将 json 转换为价格 object
RequestEntity requestEntity = new RequestEntity(requestHeaders, HttpMethod.valueOf("GET"), uri);
restTemplate.exchange(requestEntity, String.class);
ResponseEntity<String> responseEntity = restTemplate.exchange(requestEntity, String.class);
String response = responseEntity.getBody();
System.out.println(response);
Gson gson = new Gson();
Price price = gson.fromJson(response, Price.class);
Price.java价格.java
public class Price {
private Wallet wallet;
private Wallet token;
private Wallet contract;
public Wallet getWallet() {
return wallet;
}
public void setWallet(Wallet wallet) {
this.wallet = wallet;
}
public Wallet getToken() {
return token;
}
public void setToken(Wallet token) {
this.token = token;
}
public Wallet getContract() {
return contract;
}
public void setContract(Wallet contract) {
this.contract = contract;
}
}
Wallet.java钱包.java
public class Wallet {
private Currencies currencies;
public Currencies getCurrencies() {
return currencies;
}
public void setCurrencies(Currencies currencies) {
this.currencies = currencies;
}
}
Currencies.java货币.java
public class Currencies {
String currency;
Integer value;
public String getCurrency() {
return currency;
}
public void setCurrency(String currency) {
this.currency = currency;
}
public Integer getValue() {
return value;
}
public void setValue(Integer value) {
this.value = value;
}
}
I need to name the class fields " 0x3b198e26e473b8fab2085b37978e36c9de5d7f68 ", " 0x54523d5fb56803bac758e8b10b321748a77ae9e9 " and " 0x330540a9d998442dcbc396165d3dbb150 "? I need to name the class fields " 0x3b198e26e473b8fab2085b37978e36c9de5d7f68 ", " 0x54523d5fb56803bac758e8b10b321748a77ae9e9 " and " 0x330540a9d998442dcbc396165d3dbb150 "? If so, these are not valid names.
如果是这样,这些不是有效的名称。
Otherwise I get null when calling否则我在调用时得到 null
System.out.println(price.getWallet());
I hope you can utilize custom deserializers here我希望你可以在这里使用自定义反序列化器
register them for Gson like this:像这样为 Gson 注册它们:
GsonBuilder gsonBldr = new GsonBuilder();
gsonBldr.registerTypeAdapter(Price.class, new PriceCustomDeserializer());
gsonBldr.registerTypeAdapter(Wallet.class, new WalletCustomDeserializer());
gsonBldr.registerTypeAdapter(Currencies.class, new CurrenciesCustomDeserializer());
and deserializers implementation:和反序列化器实现:
public class PriceCustomDeserializer implements JsonDeserializer<Price> {
@Override
public Price deserialize
(JsonElement jElement, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
JsonObject jObject = jElement.getAsJsonObject();
//parse 3 values (without names) from json by order
}
}
//add remaining 2 deserializers
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