HTTP请求得到的数据(json或xml)进行类型转换(String 转 int )

Posted 2020-08-23 莲藕排骨汤

//有一个参数的返回的是string类型的字符串，我想用int接收，提供给后面使用，需写好转换逻辑

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

    }

 

在该字段上加注解

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

 

 

如果是xml类型的数据(String转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();
        }

    }

在相应字段加注解，就行了　

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