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最近从新浪开放IP接口上读取IP的归属地信息，结果发现读取过来的IP归属地信息是gbk编码，而数据库则是utf8编码，如果直接把gbk编码的信息写入到数据库，则出现乱码，所以必须在持续里把数据进行utf8编码转换，经网络搜索，找到如下方法
#include <iconv.h>
int code_convert(char *from_charset,char *to_charset,char *inbuf,size_t inlen,char *outbuf,size_t outlen)
{
iconv_t cd;
int rc;
char **pin = &inbuf;
char **pout = &outbuf;
cd = iconv_open(to_charset,from_charset);
if (cd==0)
return -1;
memset(outbuf,0,outlen);
if (iconv(cd,pin,&inlen,pout,&outlen) == -1)
return -1;
iconv_close(cd);
return 0;
}
int u2g(char *inbuf,int inlen,char *outbuf,size_t outlen)
{
return code_convert("utf-8","gb2312",inbuf,inlen,outbuf,outlen);
}
int g2u(char *inbuf,size_t inlen,char *outbuf,size_t outlen)
{
return code_convert("gb2312","utf-8",inbuf,inlen,outbuf,outlen);
}
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