Jackson ObjectNode JsonNode --＞ FastJson JSONObject

//构造二级json
ObjectNode objectNode = new ObjectMapper().createObjectNode();
objectNode.put("key", "value");
objectNode.put("key2", 12);
ObjectNode objectNode2 = objectNode.putObject("object");
//需要反射遍历实现
objectNode2.put("name", "dean");
objectNode2.put("address", "renminroad");

//构建二级json，直接使用对象
JsonNode jsonNode = new ObjectMapper().convertValue(new User("name"), JsonNode.class);
objectNode.set("object2", jsonNode);

//取值，支持一层一层依次取，也支持json path形式的直接读取
String json = "{\"aa\":12, \"bb\":{\"cc\":\"sometext\"}}";
ObjectNode objectNodeTree = (ObjectNode) new ObjectMapper().readTree(json);//从json 转 
System.out.println(objectNodeTree);//转向 json
System.out.println(objectNodeTree.get("aa").asInt());
System.out.println(objectNodeTree.get("bb").get("cc").asText());

//


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23