jackson数据编码解码总结

jackson编码：

Map<String, Object> map = new HashMap<String, Object>();

ObjectMapper mapper = new ObjectMapper();

 mapper.writeValueAsString(map);

jackson解码：

String data="{a:b}";

ObjectMapper mapper = new ObjectMapper();

OrderModel om = mapper.readValue(urlStr, Class<T>);

String data="[{a:b}]";

ObjectMapper mapper = new ObjectMapper();

List< Class<T>> list = mapper.readValue(data,TypeFactory.collectionType(ArrayList.class,  Class<T>));