C語(yǔ)言中使用JSON傳輸圖片需要將圖片轉(zhuǎn)換成二進(jìn)制數(shù)據(jù)流，然后將數(shù)據(jù)流經(jīng)過(guò)Base64編碼后再打包成JSON數(shù)據(jù)格式進(jìn)行傳輸。

#include#include#include#include "cJSON.h"
//讀取文件并轉(zhuǎn)換為Base64 
char* readFileToBase64(char *filePath){
FILE *fp = fopen(filePath, "rb");
if (fp == NULL){
return NULL;
}
fseek(fp, 0, SEEK_END);
int fileSize = ftell(fp);
fseek(fp, 0, SEEK_SET);
char* buffer = (char*)malloc(fileSize);
if (buffer == NULL){
fclose(fp);
return NULL;
} 
memset(buffer, 0, fileSize);
fread(buffer, 1, fileSize, fp);
fclose(fp);
char *base64Data = base64_encode((const unsigned char*)buffer, fileSize);
free(buffer);
return base64Data;
}
//主函數(shù) 
int main(){
//讀取圖片文件，并轉(zhuǎn)換為Base64編碼 
char *base64Data = readFileToBase64("test.jpg");
if (base64Data == NULL){
printf("讀取文件錯(cuò)誤\n");
return -1;
}
//生成JSON數(shù)據(jù) 
cJSON *root = cJSON_CreateObject();
cJSON_AddStringToObject(root, "type", "image");
cJSON_AddStringToObject(root, "base64Data", base64Data);
//釋放內(nèi)存 
cJSON_Delete(root);
free(base64Data);
return 0;
}

以上是C語(yǔ)言中使用JSON傳輸圖片的簡(jiǎn)要介紹，可以根據(jù)實(shí)際需求進(jìn)行代碼編寫(xiě)。