HTTP請求獲得的數據(json或xml)進行類型轉換(String 轉 int )

//有一個參數的返回的是string類型的字符串，我想用int接收，提供給後面使用，需寫好轉換邏輯

    static class StringDeserializer extends JsonDeserializer<Integer> {
        @Override
        public Integer deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException,
                JsonProcessingException {
            return (jp.getText() == null || "".equals(jp.getText())) ? 0 : 1;
        }

    }

 

在該字段上加註解

@JsonDeserialize(using = StringDeserializer.class)
private int errorCode;

 

 

若是是xml類型的數據(String轉money)

 static class MoneyAdapter extends XmlAdapter<String, Money> {

        /**
         * {@inheritDoc}
         * 
         * @see javax.xml.bind.annotation.adapters.XmlAdapter#unmarshal(java.lang.Object)
         */
        @Override
        public Money unmarshal(String v) throws Exception {
            return new Money(v);
        }

        /**
         * {@inheritDoc}
         * 
         * @see javax.xml.bind.annotation.adapters.XmlAdapter#marshal(java.lang.Object)
         */
        @Override
        public String marshal(Money v) throws Exception {
            return v.toString();
        }

    }

在相應字段加註解，就好了　

@XmlJavaTypeAdapter(MoneyAdapter.class)
@XmlElement(name = "remain_value")
private Money remainValue;