JSON参数转jsonnode实例代码

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

public static JsonNode parseJsonNode(String json) {
		JsonNode node = null;
		try {
			ObjectMapper objectMapper = new ObjectMapper();
			node = objectMapper.readValue(json, JsonNode.class);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return node;
	}

//如果是嵌套的json对象，遍历取值
	JsonNode colsNode = jsonNode.get("cols");
			int clen = colsNode.size();
			for (int i = 0; i < clen; i++) {
				JsonNode cols = colsNode.get(i);
				String name = cols.get("name").asText();
			}