@Test
public void test1(){

	ObjectNode root = JsonUtil.createObjectNode();
	ObjectNode node1 = JsonUtil.createObjectNode();
	ObjectNode node2 = JsonUtil.createObjectNode();
	node2.put("zhang", 1);
	node1.put("aaaa", "1111");
	node1.set("bbb", node2);
	root.set("child",node1);
	System.out.println(root.toString());
}