使用beanUtils操纵javabean

package com.lan.beanutils;

import java.lang.reflect.InvocationTargetException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;


import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.ConversionException;
import org.apache.commons.beanutils.ConvertUtils;
import org.apache.commons.beanutils.Converter;
import org.junit.Test;

import sun.java2d.pipe.SpanShapeRenderer.Simple;

//使用beanUtils操作bean的属性
public class Demo {

	@Test
	public void test1() throws IllegalAccessException, InvocationTargetException{
		
		Person person = new Person();
		
		BeanUtils.setProperty(person, "name", "xxxx");
		
		System.out.println(person.getName());
	}
	
	@Test
	public void test2() throws IllegalAccessException, InvocationTargetException{
		
		String nameString = "aaa";
		String passwordString = "123";
		String age = "33";
		String birthdayString = "1988-01-01";
		
		Person person = new Person();
		BeanUtils.setProperty(person, "name", nameString);
		BeanUtils.setProperty(person, "password", passwordString);
		BeanUtils.setProperty(person, "age", age);//只支持8种基本数据类型自动转换
		//BeanUtils.setProperty(person, "birthday", birthdayString);
		
		System.out.println(person.getName());
		System.out.println(person.getPassword());
		System.out.println(person.getAge());
		//System.out.println(person.getBirthday());
		
		
		//为了让日期赋到bean的birthday属性上，我们给beanUtils注册一个日期转换器
		ConvertUtils.register(new Converter() {
			
			@Override
			public Object convert(Class type, Object value) {
			
				if (value == null) {
					return null;
				}
				
				if (!(value instanceof String)) {
					throw new ConversionException("只支持String类型的转换!");
				}
				
				String str = (String)value;
				
				if (str.trim().equals("")) {
					return null;
				}
				
				SimpleDateFormat df= new SimpleDateFormat("yyyy-MM-dd");
				try {
					return df.parse(str);
				} catch (ParseException e) {
					throw new RuntimeException(e);//异常链不能断
				}
			}
		}, Date.class);
		
		
		BeanUtils.setProperty(person, "birthday", birthdayString);
		System.out.println(person.getBirthday());

                Date date = person.getBirthday();
		System.out.println(date.toLocaleString());
	}
}

package com.lan.beanutils;


import java.util.Date;



//javabean
public class Person {
	
	private String name;
	private String password;
	private int age;
	private Date birthday;
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public Date getBirthday() {
		return birthday;
	}
	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}
	
}