爬虫的编写：

 # -*- coding: utf-8 -*-
#encoding=utf-8
import scrapy
from maizi.items import MaiziItem
reload(__import__('sys')).setdefaultencoding('utf-8') 

class MaimaiSpider(scrapy.Spider):
    name = "maimai"
    allowed_domains = ["http://www.zaobao.com/news/china/"]
    start_urls = (
        'http://www.zaobao.com/news/china//',
    )

    def parse(self, response):

        for li in response.xpath('//*[@id="l_title"]/ul/li'):
            item = MaiziItem()
            item['title'] = li.xpath('a[1]/p/text()').extract()
            item['link']=li.xpath('a[1]/@href').extract()
            item['desc'] = li.xpath('a[2]/p/text()').extract()

            yield item#返回项目

item的定义：

 import scrapy


class MaiziItem(scrapy.Item):
    title = scrapy.Field()
    link=scrapy.Field()
    desc =scrapy.Field()

爬虫结果输出：
是中文乱码，请问怎么改。