传统的对象POJO

其实就是普通的对象

public class Document {private String name;private int time;public String getName() {return name;}public void setName(String name) {this.name = name;}public int getTime() {return time;}public void setTime(int time) {this.time = time;}
}

Java_Beans_API_20">Java Beans API（了解即可）

https://en.wikipedia.org/wiki/JavaBeans

public static void main(String[] args) throws IntrospectionException {// 内省 可以获取Bean的一些基本信息 BeanInfo beanInfo = Introspector.getBeanInfo(Document.class, Object.class);Arrays.stream(beanInfo.getPropertyDescriptors()).forEach(propertyDescriptor -> {String name = propertyDescriptor.getName();if ("name".equals(name)) {propertyDescriptor.setPropertyEditorClass(String2Integer.class);}});
}
static class String2Integer extends PropertyEditorSupport {@Overridepublic void setAsText(String text) throws IllegalArgumentException {Integer val = Integer.valueOf(text);setValue(val);}
}