当我们获取了图书的条码后,可以使用WebResponse 和HttpWebRequest从豆瓣网获取图书的信息.获取图书信息的地址:
"http://api.douban.com/book/subject/isbn/ 加上图书的条码,可以是只有数字,也可以在中间加入"-"(不包括引号)如:978-7-115-18103-9.
注意,返回的数据需要使用UTF-8编码,如果使用GB2312,将会是乱码.
将下面的函数加入工程,在适当的地方调用,传入ISBN号,即可获取图书相关的信息.
public string GetBookInfo(string ISBN)
{
string url = "http://api.douban.com/book/subject/isbn/";
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url + ISBN);
WebResponse response = request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("utf-8"));
string BookInfo = reader.ReadToEnd();
reader.Close();
reader.Dispose();
response.Close();
return BookInfo;
}
在没有申请豆瓣网的APIKEY时,每分钟只能调用10次,如果申请了可以达到40次.
若要包含APIKEY,则在访问时的URL改为:
http://api.douban.com/book/subject/isbn/ISBN?APIKEY=你的APIKEY ,其中的ISBN即书号,最后你的APIKEY需要替换成你的号码.
查询例子：
http://api.douban.com/book/subject/isbn/978-7-115-18103-9
查询出来的结果：
<?xml version="1.0" encoding="UTF-8" ?>
-
<
entry
xmlns
="
http://www.w3.org/2005/Atom
"
xmlns:db
="
http://www.douban.com/xmlns/
"
xmlns:gd
="
http://schemas.google.com/g/2005
"
xmlns:openSearch
="
http://a9.com/-/spec/opensearchrss/1.0/
"
xmlns:opensearch
="
http://a9.com/-/spec/opensearchrss/1.0/
">
<
id
>
http://api.douban.com/book/subject/3171438
</
id
>
<
title
>
数控加工与编程
</
title
>
<
category
scheme
="
http://www.douban.com/2007#kind
"
term
="
http://www.douban.com/2007#book
" />
<
link
href
="
http://api.douban.com/book/subject/3171438
"
rel
="
self
" />
<
link
href
="
http://book.douban.com/subject/3171438/
"
rel
="
alternate
" />
<
link
href
="
http://img1.douban.com/spic/s5924224.jpg
"
rel
="
image
" />
<
link
href
="
http://m.douban.com/book/subject/3171438/
"
rel
="
mobile
" />
<
summary
>
《高职高专机电类规划教材•数控加工与编程》以Fanuc 0i系统为蓝本，深入浅出地讲述了数控车床、加工中心的基本理论知识及其编程方法。书中所有程序中的每行语句后都附有详细、清晰的注释说明，所有程序都在数控机床上实际运行过。《高职高专机电类规划教材•数控加工与编程》各章设有思考与练习，便于学生更好地掌握所学内容，并附有Fanuc 0i系统、华中数控系统常用指令表及说明，供读者查阅和学习。
</
summary
>
<
db:attribute name
="
isbn10
">
7115181039
</
db:attribute
>
<
db:attribute name
="
isbn13
">
9787115181039
</
db:attribute
>
<
db:attribute name
="
title
">
数控加工与编程
</
db:attribute
>
<
db:attribute name
="
pages
">
213
</
db:attribute
>
<
db:attribute name
="
author
">
顾晔 编
</
db:attribute
>
<
db:attribute name
="
price
">
24.00元
</
db:attribute
>
<
db:attribute name
="
pubdate
">
2008-9
</
db:attribute
>
<
gd:rating
average
="
0
"
max
="
10
"
min
="
0
"
numRaters
="
0
" />
</
entry
>
中图法目录查询：