我在测试中使用了这段代码，其中#include <stdio.h>
#include <iostream>
#include "SFML/Graphics.hpp"
using namespace std;
struct ellipse
{
sf::Text ellipseTitle;
};
vector<ellipse> initialize(vector<ellipse> ellipses,unsigned short numberOfEllipses,sf::Font& myFont)
{
ellipse e;
e.ellipseTitle.setFont(myFont);
e.ellipseTitle.setCharacterSize(20);
e.ellipseTitle.setFillColor(sf::Color::White);
for(int i=0;i<numberOfEllipses;i++)
{
e.ellipseTitle.setString("[Some text "+to_string(i)+"]");
sf::FloatRect textRect = e.ellipseTitle.getLocalBounds();
e.ellipseTitle.setOrigin(textRect.left + textRect.width/2.0f,textRect.top + textRect.height/2.0f);
e.ellipseTitle.setPosition(sf::Vector2f(100,100+(20*i)));
ellipses.push_back(e);
}
return ellipses;
}
int main()
{
sf::RenderWindow window(sf::VideoMode(640,480), "Demo",sf::Style::Default);
unsigned short numberOfEllipses=11;
sf::Font myFont;
string myfontFileName="./media/Arial.ttf";
if (!myFont.loadFromFile(myfontFileName))
{
cout << "Could not find the font " << myfontFileName << endl;
return EXIT_FAILURE;
}
vector<ellipse> ellipses;
ellipses=initialize(ellipses,numberOfEllipses,myFont);
sf::Event myEvent;
while (window.isOpen())
{
while (window.pollEvent(myEvent))
{
if (myEvent.type == sf::Event::EventType::Closed)
{
window.close();
}
}
window.clear();
for(ellipse e:ellipses)
{
cout << "title " << e.ellipseTitle.getString().toAnsiString() << endl;
window.draw(e.ellipseTitle);
}
window.display();
}
return EXIT_SUCCESS;
}```
实际上是一个字符串。网址指向我上传的亚马逊的S3图片。
url第一个调用结果进入rest.exchange(url, HttpMethod.GET, HttpEntity(null, HttpHeaders()), ByteArray::class.java)
val file = rest.execute(URI(url), HttpMethod.GET, null, ResponseExtractor {
val tmpFile = File.createTempFile("media", tmpFileName)
StreamUtils.copy(it.body, FileOutputStream(tmpFile))
tmpFile
})
。后者返回200。
比较http调用中使用的两个结果字符串，我得到了这个差异（因为它是从工作的，因此是机密的，因此不会发布整个URL）：
Error parsing the X-Amz-Credential parameter; the Credential is mal-formed; expecting "<YOUR-AKID>/YYYYMMDD/REGION/SERVICE/aws4_request"此行为可能是什么原因？