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;  
    }  
      
}