package org.xiazdong.beanutils;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

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.apache.commons.beanutils.locale.converters.DateLocaleConverter;
import org.junit.Test;
import org.xiazdong.Person;

public class Demo01 {

    // 設置屬性
    @Test
    public void test1() throws Exception {
        Person p = new Person();
        BeanUtils.setProperty(p, "name", "xiazdong");
        BeanUtils.setProperty(p, "age", 20);
        System.out.println(p.getName());
        System.out.println(p.getAge());
    }

    // 自定義轉換器
    @Test
    public void test2() throws Exception {
        Person p = new Person();
        ConvertUtils.register(new Converter() {

            @Override
            public Object convert(Class type, Object value) {
                if (value == null) {
                    return null;
                }
                if (!(value instanceof String)) {
                    throw new ConversionException("conversion error");
                }
                String str = (String) value;
                if (str.trim().equals("")) {
                    return null;
                }
                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
                try {
                    return sdf.parse(str);
                } catch (ParseException e) {
                    throw new RuntimeException(e);
                }

            }

        }, Date.class);
        BeanUtils.setProperty(p, "birth", "2011-10-10");
        System.out.println(p.getBirth().toLocaleString());
    }

    // 使用內置的轉換器
    @Test
    public void test3() throws Exception {
        Person p = new Person();
        ConvertUtils.register(new DateLocaleConverter(), Date.class);
        BeanUtils.setProperty(p, "birth", "2011-10-10");
        System.out.println(p.getBirth().toLocaleString());
    }

    // 使用內置的轉換器
    @Test
    public void test4() throws Exception {
        Map map = new HashMap();
        map.put("name", "xiazdong");
        map.put("age", "20");
        map.put("birth", "2010-10-10");
        ConvertUtils.register(new DateLocaleConverter(), Date.class);
        Person p = new Person();
        BeanUtils.populate(p, map);
        System.out.println(p.getAge());
        System.out.println(p.getBirth());
    }
}