Android Gson解析

将json字符串解析成一个javaBean：

public class MainActivity extends Activity {
	private Button startButton = null;
	private String data = "{\"name\":\"zhangsan\",\"age\":20}";
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		startButton = (Button)findViewById(R.id.button1);
		startButton.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View arg0) {
				Gson gson = new Gson();
				
				User user = gson.fromJson(data, User.class);
				System.out.println("name---->" + user.getName());
				System.out.println("age----->" + user.getAge());
			}
		});
	}


}

将json字符串解析成多个JavaBean对象：

public class MainActivity_2 extends Activity {
	private Button startButton = null;
	private String data = "[{\"name\":\"zhangsan\",\"age\":20},{\"name\":\"lisi\",\"age\":21}]";
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		startButton = (Button)findViewById(R.id.button1);
		startButton.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				Type type = new TypeToken<ArrayList<User>>(){}.getType();
				Gson gson = new Gson();
				ArrayList<User> list = gson.fromJson(data, type);
				Iterator<User> iterator = list.iterator();
				while (iterator.hasNext()) {
					User user = iterator.next();
					System.out.println("name--->" + user.getName());
					System.out.println("age---->" + user.getAge());
				}
			}
		});
	}

}

bean对象：

public class User {
	private String name;
	private int age;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

}