java反射获取一个object属性值代码解析

private class User {
	String userName;
	String userPassword;
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getUserPassword() {
		return userPassword;
	}
	public void setUserPassword(String userPassword) {
		this.userPassword = userPassword;
	}
}

User user = new User();
user.setUserName("徐风来");
user.setUserPassword("1596666");
Object object = user;

java.lang.reflect.Field[] fields = object.getClass().getDeclaredFields();
for (java.lang.reflect.Field f : fields) {
  Log.i("xbh", f.getName());
}

java.lang.reflect.Method[] method = object.getClass().getDeclaredMethods();//获取所有方法
for(java.lang.reflect.Method m:method) {
  System.out.println(m.getName());
  if (m.getName().startsWith("get")) {
    Object o = null;
    try {
      o = m.invoke(object);
    } catch (IllegalAccessException | InvocationTargetException e) {
      e.printStackTrace();
    }
    if (o != null && !"".equals(o.toString())) {
      Log.i("xbh", o.toString());
    }
  }

java.lang.reflect.Field fi = null;
//获取属性
try {
	fi = object.getClass().getDeclaredField("userName");
}
catch (NoSuchFieldException e) {
	e.printStackTrace();
}
fi.setAccessible(true);
//设置当前对象对model私有属性的访问权限
try {
	Log.i("xbh", fi.get(object).toString());
}
catch (IllegalAccessException e) {
	e.printStackTrace();
}

Map map = (Map) u;
map.get("userAvatar");