首先jackson的json对象是:
ObjectMapper mapper = new ObjectMapper();
一:string to json
jackson树模型解析数据
将json-string转化成一棵树rootnode:JsonNode rootNode = mapper.readTree(stringJson, JsonNode.class)
然后分别获取每个节点:eg JsonNode value1Node = rootNode.get("key1")
然后将value1Node转化成你想要的类型如String:value1Node.asText()
jsonparser
JsonFactory factory = new JsonFactory();
JsonParser parser = factory.createParser(stringJson);