1. 用浏览器过掉验证，拷贝 cookie ，带 cookie 抓（可能 cookie 包含 ip 信息）
2.

```
class Handler(BaseHandler):
crawl_config = {
}

@every(minutes=24 * 60)
def on_start(self):
self.crawl('http://ips.chacuo.net/', callback=self.chk_jschl , fetch_type='js', js_script=r'''
function() {
var script = document.querySelector('script').textContent;
console.log(script);
script = script.match(new RegExp("setTimeout\\(function\\(\\){([\\s\\S\n]+)f.submit", 'm'))[1] + 'a.value;';
console.log(script);
return eval(script);
}
''')

@catch_status_code_error
@config(age=10 * 24 * 60 * 60)
def chk_jschl (self, response):
print response.cookies
print response.js_script_result
self.crawl('http://ips.chacuo.net/cdn-cgi/l/chk_jschl', params={
'jschl_vc': response.doc('input[name=jschl_vc]').val(),
'pass': response.doc('input[name=pass]').val(),
'jschl-answer': response.js_script_result
}, callback=self.detail_page, cookies=response.cookies, headers={
'Referer': 'http://ips.chacuo.net/'
})
```