用安卓自带的原生方法解析从webservice获取的json数据

之前试过用geon还有fastjson但是老是报错。还是用原生自带的json方法。这里我来接受一组json数据

譬如我们想要获取一堆人员信息，

[
  {"username":"马晕","company":"albaba"},
  {"username":"刘强西","company":"jingdong"},
  {"username":"马花疼","company":"qq"},
  {"username":"李艳红","company":"baidu"}
]

这里我们根据我们获得的数据进行映射:生成一个人员类实体

public class User implements Serializable {

	
	private String username;
	private String company;
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getCompany() {
		return company;
	}
	public void setCompany(String company) {
		this.company = company;
	}
	
	
}

那我们在做一个UserList的实体类 用来转换json数据为了对象组

public class UserList implements Serializable {
	
	private List<User> userList= new ArrayList<User>();
	//信息组的人员的总人数
	private int usersCount;
	
	public int getUsersCount() {
		return  usersCount;
	}	
	
	public List<User> getUserList() {
		return userList;
	}

    //解析json并转化成对象组
	public static UserList parse(JSONArray obj) throws JSONException {
			
		UserList list = new UserList();	
		if(null != obj){
			//获取对象组长度作为总人数
			list.usersCount = obj.length();
			for(int i=0;i<obj.length();i++){
				JSONObject userJson = obj.getJSONObject(i);
				User user = new User();
				user.setUsername(userJson.getString("username"));
				user.setCompany(userJson.getString("company"));
				list.userList.add(user);
			}		
		}		
		return list;
	}

}

String usersString = "[
  {"username":"马晕","company":"albaba"},
  {"username":"刘强西","company":"jingdong"},
  {"username":"马花疼","company":"qq"},
  {"username":"李艳红","company":"baidu"}
]";

	/**
	 * 字符串转JSON
	 * 
	 * @param json
	 * @return
	 * @throws JSONException
	 */
	public static JSONArray toJSONArray(String json) throws JSONException {
		return new JSONArray(json);
	}