c语言easy,【EasyDL】C语言请求示例代码

此文给出的为 C语言调用百度EasyDL的示例代码 图片转base64请自行处理

在用sprintf这个函数的时候 把json数据格式化输入的时候 要自己添加结束符

其他语言调用336001错误解决方案或示例代码 http://aixiaoshuai.mydoc.io/?t&＃61;236073

C语言示例代码&＃xff1a;

来源于热心开发者

#include

#include

#include

#include

#include

#include

#include

//图片的base64数据 不需要urlencode处理

const char * base64char &＃61; "";

unsigned long get_file_size(const char * path)

{

unsigned long filesize &＃61;-1;

struct stat statbuff;

if(stat(path,&statbuff) <0)

{

return filesize;

}

else

filesize &＃61; statbuff.st_size;

return filesize;

}

char * base64_encode( const unsigned char * bindata, char * base64, int binlength )

{

int i, j;

unsigned char current;

for ( i &＃61; 0, j &＃61; 0 ; i

{

current &＃61; (bindata[i] >> 2) ;

current &&＃61; (unsigned char)0x3F;

base64[j&＃43;&＃43;] &＃61; base64char[(int)current];

current &＃61; ( (unsigned char)(bindata[i] <<4 ) ) & ( (unsigned char)0x30 ) ;

if ( i &＃43; 1 >&＃61; binlength )

{

base64[j&＃43;&＃43;] &＃61; base64char[(int)current];

base64[j&＃43;&＃43;] &＃61; &＃39;&＃61;&＃39;;

base64[j&＃43;&＃43;] &＃61; &＃39;&＃61;&＃39;;

break;

}

current |&＃61; ( (unsigned char)(bindata[i&＃43;1] >> 4) ) & ( (unsigned char) 0x0F );

base64[j&＃43;&＃43;] &＃61; base64char[(int)current];

current &＃61; ( (unsigned char)(bindata[i&＃43;1] <<2) ) & ( (unsigned char)0x3C ) ;

if ( i &＃43; 2 >&＃61; binlength )

{

base64[j&＃43;&＃43;] &＃61; base64char[(int)current];

base64[j&＃43;&＃43;] &＃61; &＃39;&＃61;&＃39;;

break;

}

current |&＃61; ( (unsigned char)(bindata[i&＃43;2] >> 6) ) & ( (unsigned char) 0x03 );

base64[j&＃43;&＃43;] &＃61; base64char[(int)current];

current &＃61; ( (unsigned char)bindata[i&＃43;2] ) & ( (unsigned char)0x3F ) ;

base64[j&＃43;&＃43;] &＃61; base64char[(int)current];

}

base64[j] &＃61; &＃39;\0&＃39;;

return base64;

}

int base64_decode( const char * base64, unsigned char * bindata )

{

int i, j;

unsigned char k;

unsigned char temp[4];

for ( i &＃61; 0, j &＃61; 0; base64[i] !&＃61; &＃39;\0&＃39; ; i &＃43;&＃61; 4 )

{

memset( temp, 0xFF, sizeof(temp) );

for ( k &＃61; 0 ; k <64 ; k &＃43;&＃43; )

{

if ( base64char[k] &＃61;&＃61; base64[i] )

temp[0]&＃61; k;

}

for ( k &＃61; 0 ; k <64 ; k &＃43;&＃43; )

{

if ( base64char[k] &＃61;&＃61; base64[i&＃43;1] )

temp[1]&＃61; k;

}

for ( k &＃61; 0 ; k <64 ; k &＃43;&＃43; )

{

if ( base64char[k] &＃61;&＃61; base64[i&＃43;2] )

temp[2]&＃61; k;

}

for ( k &＃61; 0 ; k <64 ; k &＃43;&＃43; )

{

if ( base64char[k] &＃61;&＃61; base64[i&＃43;3] )

temp[3]&＃61; k;

}

bindata[j&＃43;&＃43;] &＃61; ((unsigned char)(((unsigned char)(temp[0] <<2))&0xFC)) |

((unsigned char)((unsigned char)(temp[1]>>4)&0x03));

if ( base64[i&＃43;2] &＃61;&＃61; &＃39;&＃61;&＃39; )

break;

bindata[j&＃43;&＃43;] &＃61; ((unsigned char)(((unsigned char)(temp[1] <<4))&0xF0)) |

((unsigned char)((unsigned char)(temp[2]>>2)&0x0F));

if ( base64[i&＃43;3] &＃61;&＃61; &＃39;&＃61;&＃39; )

break;

bindata[j&＃43;&＃43;] &＃61; ((unsigned char)(((unsigned char)(temp[2] <<6))&0xF0)) |

((unsigned char)(temp[3]&0x3F));

}

return j;

}

void encode(FILE * fp_in, FILE * fp_out)

{

unsigned char bindata[2050];

char base64[4096];

size_t bytes;

while ( !feof( fp_in ) )

{

bytes &＃61; fread( bindata, 1, 2049, fp_in );

base64_encode( bindata, base64, bytes );

fprintf( fp_out, "%s", base64 );

}

}

void decode(FILE * fp_in, FILE * fp_out)

{

int i;

unsigned char bindata[2050];

char base64[4096];

size_t bytes;

while ( !feof( fp_in ) )

{

for ( i &＃61; 0 ; i <2048 ; i &＃43;&＃43; )

{

base64[i] &＃61; fgetc(fp_in);

if ( base64[i] &＃61;&＃61; EOF )

break;

else if ( base64[i] &＃61;&＃61; &＃39;\n&＃39; || base64[i] &＃61;&＃61; &＃39;\r&＃39; )

i --;

}

bytes &＃61; base64_decode( base64, bindata );

fwrite( bindata, bytes, 1, fp_out );

}

}

FILE *fp;

//这个函数是为了符合CURLOPT_WRITEFUNCTION而构造的

//完成数据保存功能

size_t WriteData(void *ptr, size_t size, size_t nmemb, void *stream)

{

int written &＃61; fwrite(ptr, size, nmemb, (FILE *)fp);

return written;

}

int postUrl()

{

CURL *curl;

CURLcode res;

char * imagedatapoint &＃61; NULL;

char szJsonData[65535] &＃61; {0};

sprintf(szJsonData,"{\"image\":\"%s\",\"top_num\":5}",imagedatapoint);//imagedatapoint 是base64编码好的图像数据编码函数上面有

char strCurlOpt_url[] &＃61;"https://aip.baidubce.com/rpc/2.0/ai_custom/v1/classification/ncpsb?access_token&＃61;24.6871ee410bf772d.......";

//等号后面换成你自己的access_token. 接口地址记得替换成自己的哦

if((fp&＃61;fopen("/usr/local/x86_curl/1.txt","w"))&＃61;&＃61;NULL)

{

printf("fopen( /opt/1.txt) fail\n");

exit(1);

}

struct curl_slist * header &＃61; NULL;

header &＃61; curl_slist_append(header,"Content-Type: application/json;charset&＃61;UTF-8");

if(NULL &＃61;&＃61; header)

{

printf("append is error\n");

exit(-1);

}

curl &＃61; curl_easy_init();

if (curl)

{

curl_easy_setopt(curl, CURLOPT_HTTPHEADER, header);

curl_easy_setopt(curl, CURLOPT_URL,strCurlOpt_url); // 指定url

curl_easy_setopt(curl, CURLOPT_HTTPPOST, 1L);

curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);

curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);

curl_easy_setopt(curl, CURLOPT_POSTFIELDS,szJsonData);

curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteData);

res &＃61; curl_easy_perform(curl);

printf("%d %s\n",res, curl_easy_strerror(res));

curl_easy_cleanup(curl);

curl_slist_free_all(header);

}

fclose(fp);

return 1;

}

int main(void)

{

curl_global_init(CURL_GLOBAL_SSL);

postUrl();

}