C# 根据ip获取城市等相关信息_.net

C# 根据ip获取城市等相关信息

 
/// <summary> 
/// 得到真实ip以及所在地详细信息（porschev） 
/// </summary> 
/// <returns></returns> 
public string getipdetails() 
{ 
//设置获取ip地址和国家源码的网址 
string url = "http://www.ip138.com/ips8.asp"; 
string regstr = "(?<=<td\\s*align=\\\"center\\\">)[^<]*?(?=<br/><br/></td>)"; 
//ip正则 
string ipregstr = "((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)"; 
//ip地址 
string ip = string.empty; 
//国家 
string country = string.empty; 
//省市 
string adr = string.empty; 
//得到网页源码 
string html = gethtml(url); 
regex reg = new regex(regstr, regexoptions.none); 
match ma = reg.match(html); html = ma.value; 
regex ipreg = new regex(ipregstr, regexoptions.none); 
ma = ipreg.match(html); 
//得到ip 
ip = ma.value; 
int index = html.lastindexof("：") + 1; 
//得到国家 
country = html.substring(index); 
adr = getadrbyip(ip); 
return "ip：" + ip + " 国家：" + country + " 省市：" + adr; 
} 
/// <summary> 
/// 通过ip得到ip所在地省市（porschev） 
/// </summary> 
/// <param name="ip"></param> 
/// <returns></returns> 
public string getadrbyip(string ip) 
{ 
string url = "http://www.cz88.net/ip/?ip=" + ip; 
string regstr = "(?<=<span\\s*id=\\\"cz_addr\\\">).*?(?=</span>)"; 
//得到网页源码 
string html = gethtml(url); 
regex reg = new regex(regstr, regexoptions.none); 
match ma = reg.match(html); 
html = ma.value; 
string[] arr = html.split(' '); 
return arr[0]; 
} 

复制代码代码如下:

 
/// <summary> 
/// 获取html源码信息(porschev) 
/// </summary> 
/// <param name="url">获取地址</param> 
/// <returns>html源码</returns> 
public string gethtml(string url) 
{ 
string str = ""; 
try 
{ 
uri uri = new uri(url); 
webrequest wr = webrequest.create(uri); 
stream s = wr.getresponse().getresponsestream(); 
streamreader sr = new streamreader(s, encoding.default); 
str = sr.readtoend(); 
} 
catch (exception e) 
{ 
} 
return str; 
} 