c 处理基于java服务端byte[]数组接收图片( xsd__base64Binary)

背景：java端基于webservice实现服务端，c作为客户端，通过gsoap传输图片给服务端。

实现步骤：

1、c端通过服务端wsdl文件生成客户端代码，图片接收部分的结构体如下：

struct xsd__base64Binary{
unsigned char *__ptr;
int __size;
char *id;	/* optional element of type xsd:string */
char *type;	/* optional element of type xsd:string */
char *options;	/* optional element of type xsd:string */
};

2、读取图片数据，并赋值给次结构体

merchantLogoByte.__ptr = soap_malloc( &add_soap, size);
memcpy(merchantLogoByte.__ptr, data, size); //data 图片数据
merchantLogoByte.__size = size;            //size图片大小

3、代码示例

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "AppWebServiceSoapBinding.nsmap"
#include "soapH.h"
#include "soapStub.h"

#define BUFSIZE 10240

/****************************************************************
函数说明    :pos签到
入口参数    :mbs数据结构体
返回类型    :交易结果
0-成功
非0-失败
初始时间    :2014-9-18 yuweichao
修改记录    :
用途功能    :用于去后台校验版本信息、生成POS机一级菜单。
****************************************************************/
int main ()
{
struct soap add_soap;
struct ns3__AddMerchantRequest _request;
struct ns4__spWSProcessRegistResponse _param_7;
struct xsd__base64Binary merchantLogoByte;
char aRcvmsg_buf[BUFSIZE];
char aTmp[256] = {0};

memset(&_request, 0x00, sizeof(struct ns3__AddMerchantRequest));
memset(&_param_7, 0x00, sizeof(struct ns4__validateAdminTelCellNumResponse));
memset(&merchantLogoByte, 0x00, sizeof(struct xsd__base64Binary));
//	sleep(10);
printf("交易处理开始 \n");
soap_init (&add_soap);
soap_set_mode(&add_soap,SOAP_C_UTFSTRING); /*设置字符集，要不客户端及服务端都会乱码*/
soap_set_namespaces(&add_soap, namespaces);/*分配命名空间*/
add_soap.connect_timeout = 60;/*设置连接超时时间 大于0 seconds 小于 0 usec*/
add_soap.send_timeout = 60;/*设置发送超时时间 大于0 seconds 小于 0 usec*/
add_soap.accept_timeout = 60;/*设置接收超时时间 大于0 seconds 小于 0 usec*/
add_soap.recv_timeout = 60;/*设置接收超时时间 大于0 seconds 小于 0 usec*/

_request.adminName = "Yu";
_request.adminPwd  ="bcb15f821479b4d5772bd0ca866c00ad5f926e3580720659cc80d39c9d09802a";
_request.adminTelCellNum = "11111111111";
_request.merchantAddress ="西安";
_request.merchantClassfiy="2";
_request.merchantEmail   ="hh@163.com";
_request.merchantName ="610166010002";
_request.merchantTelephone = "11111111111";
/*图片数据处理*/

FILE *fp = fopen("qr.jpg", "rb");

if (fp == NULL)
{
fprintf(stderr, "cannot open image file\n");
exit(1);
}

fseek(fp, 0, SEEK_END);

if (ferror(fp)) {

fprintf(stderr, "fseek() failed\n");
int r = fclose(fp);

if (r == EOF) {
fprintf(stderr, "cannot close file handler\n");
}

exit(1);
}

int flen = ftell(fp);

if (flen == -1) {

perror("error occurred");
int r = fclose(fp);

if (r == EOF) {
fprintf(stderr, "cannot close file handler\n");
}

exit(1);
}

fseek(fp, 0, SEEK_SET);

if (ferror(fp)) {

fprintf(stderr, "fseek() failed\n");
int r = fclose(fp);

if (r == EOF) {
fprintf(stderr, "cannot close file handler\n");
}

exit(1);
}

char data[flen+1];
//merchantLogoByte.__ptr = (unsigned char*)soap_malloc( &add_soap, flen);

int size = fread(data, 1, flen, fp);
//int size = fread(merchantLogoByte.__ptr, 1, flen, fp);
if (ferror(fp)) {

fprintf(stderr, "fread() failed\n");
int r = fclose(fp);

if (r == EOF) {
fprintf(stderr, "cannot close file handler\n");
}

exit(1);
}

int r = fclose(fp);

if (r == EOF) {
fprintf(stderr, "cannot close file handler\n");
}
printf("%d\n [%#x]\n", size, data);
merchantLogoByte.__ptr = soap_malloc( &add_soap, size);
memcpy(merchantLogoByte.__ptr, data, size);
//merchantLogoByte.__ptr = data;
//strcpy(merchantLogoByte.__ptr, data);
merchantLogoByte.__size = size;

_request.merchantLogoByte = &merchantLogoByte;

if (soap_call_ns4__spWSProcessRegist(&add_soap, NULL, NULL, &_request, &_param_7) == SOAP_OK)
{
printf( "%s(%s):%d|Call webservce OK  [%s] [%s]\n",__FILE__,__FUNCTION__,__LINE__, _param_7._spWSProcessRegistReturn->resultCode, _param_7._spWSProcessRegistReturn->resultMsg);
}
else
{
printf("%s(%s):%d|soap err:%d,%s,%s",__FILE__,__FUNCTION__,__LINE__,add_soap.error,*soap_faultcode(&add_soap),*soap_faultstring(&add_soap));
return -1;
}

soap_end(&add_soap);    /*清除运行环境变量*/
soap_done(&add_soap);   /*卸载运行环境变量*/

return 0;
}