Java解析Json数据的两种方式

JSON数据解析的有点在于他的体积小，在网络上传输的时候可以更省流量，所以使用越来越广泛，下面介绍使用JsonObject和JsonArray的两种方式解析Json数据。

使用以上两种方式解析json均需要依赖json-lib.jar开发包使用依赖包

1、JsonObject

使用JsonObject解析只有一条数据的json是非常方便的例如："{"name":"zhangsan","password":"zhangsan123","email":"10371443@qq.com"}"

public static void main(String[] args) {

		 String jsonString ="{"name":"zhangsan","password":"zhangsan123","email":"10371443@qq.com"}";
		 JSONObject json = JSONObject.fromObject(jsonString);
		 User user = new User();
		 user.setName(json.getString("name"));
		 user.setPassword(json.getString("password"));
		 user.setEmail(json.getString("email"));
		 System.out.println(user.toString());
	}

2、JsonArray

使用JsonArray解析数组数据的json是非常方便的例如："[{"name":"zhangsan","password":"zhangsan123","email":"10371443@qq.com"},{"name":"lisi","password":"lisi123","email":"1435123@qq.com"}]"

String json = <span style="color: rgb(51, 51, 51); font-family: Arial; font-size: 14px; line-height: 26px;">"[{"name":"zhangsan","password":"zhangsan123","email":"10371443@qq.com"},</span><span style="color: rgb(51, 51, 51); font-family: Arial; font-size: 14px; line-height: 26px;">{"name":"lisi","password":"lisi123","email":"1435123@qq.com"}</span><span style="color: rgb(51, 51, 51); font-family: Arial; font-size: 14px; line-height: 26px;">]"</span>;
		 JSONArray jsonArray = JSONArray.fromObject(json);
		 ArrayList<User> users = new ArrayList<User>();
		 for (int i = 0; i < jsonArray.size(); i++) {
			 User userM = new User();
			 user.setName(jsonArray.getJSONObject(i).getString("name"));
			 user.setpassword(jsonArray.getJSONObject(i).getString("password"));
			 user.setEmail(jsonArray.getJSONObject(i).getString("email"));
			 users.add(user);
		}
		 for (User user : users) {
			System.out.println(user.toString());
		}

通过以上两种方式可以解析不同格式的json数据