我正在使用JavaScript编写程序，该程序通过ArcGIS REST API连接到本地ArcGIS服务器并加载地图。
获取服务的网址是
let xmlhttp = new XMLHttpRequest();
xmlhttp.withCredentials = true;
let url = "http://domain/arcgis/rest/services/" + serviceName +"/MapServer/" + layer_id + "/query?f=json&where=1%3D1&returnGeometry=false&outFields=*";
我可以通过API获取令牌。问题是，我无法在cookie中设置它，因为浏览器拒绝以编程方式编写另一个域。
有人建议解决方法吗？
答案 0 :(得分：1)
您可以将class parReader
{
public:
parReader(std::string dirname, std::vector< cv::Mat > & lst);
private:
size_t filesIdx;
HANDLE hFilesMux,hImgListMux;
std::vector<cv::String> files;
std::vector<cv::Mat> img_lst;
static void readImgs(parReader *nm);
const char *getNext();
void push_back(cv::Mat &img);
};
parReader::parReader(std::string dirname, std::vector<cv::Mat> & lst) :img_lst(lst), filesIdx(0),hFilesMux(NULL),hImgListMux(NULL)
{
hFilesMux = CreateMutex(NULL, 0, NULL);
hImgListMux = CreateMutex(NULL, 0, NULL);
cv::glob(dirname, files);
std::thread pr1(readImgs, this);
std::thread pr2(readImgs, this);
std::thread pr3(readImgs, this);
std::thread pr4(readImgs, this);
pr1.join();
pr2.join();
pr3.join();
pr4.join();
CloseHandle(hFilesMux);
CloseHandle(hImgListMux);
}
const char *parReader::getNext()
{
const char *res = NULL;
WaitForSingleObject(hFilesMux, INFINITE);
if (filesIdx < files.size())
res = files[filesIdx++].c_str();
ReleaseMutex(hFilesMux);
return res;
}
void parReader::push_back(cv::Mat &img)
{
WaitForSingleObject(hImgListMux, INFINITE);
img_lst.push_back(img);
ReleaseMutex(hImgListMux);
}
void parReader::readImgs(parReader *nm)
{
while (true)
{
const char *fn = nm->getNext();
if (fn == NULL) break;
cv::Mat img = cv::imread(fn);
if (img.empty()) // treci peste daca este imagine invalida
{
std::cout << fn << " is invalid!" << std::endl;
continue;
}
nm->push_back(img);
}
}
int main()
{
std::vector<cv::Mat> imgList;
parReader mgr("*.png",imgList);
}
添加到您的网址，以便获得：
&token=abcd1234