C++需要实现PHP端的:
bin2Hex
函数,PHP通过这种类型的字符串调用:pack
转换成PHP能识别的2进制数据。C++需要做的是实现一个bin2hex,其实只是把c++读取的2进制数据当成byte数组,把每一位转换成16进制字符串就可以了。Qt中使用sprintf无法限制2位长度,因此sprintf之后判断长度为8则截取最后3个字符串,包含了/0终止符
<code> QString Bin2Hex(char* data1,<span>int</span> len) { QString <span>s</span> ; QString r ; <span>for</span> (<span>int</span><span>x</span>=<span>0</span>;<span>x</span><len;<span>x</span>++) { <span>s</span>.<span>sprintf</span>(<span>"<span>%02x</span>\0"</span>,data1[<span>x</span>]); <span>if</span>(<span>s</span>.<span>length</span>()><span>2</span>) { <span>s</span>=<span>s</span>.mid(<span>6</span>,<span>8</span>); } r.append(<span>s</span>); } <span>return</span> r; } QVariant QmlClass::readimg(QString file) { QFile mfile(file); <span>if</span>(!mfile.<span>open</span>(QIODevice::ReadOnly) ) { qDebug()<<<span>"文件不存在"</span>; <span>return</span><span>""</span>; } qDebug()<<<span>"文件存在"</span>; QByteArray ar = mfile.readAll(); char * adr =ar.data(); QString <span>m</span>= Bin2Hex(adr,ar.size()); <span>return</span><span>m</span>; }</code>
<code><span><span>function</span><span>uploadimg</span><span>()</span> {</span><span>var</span> x = <span>new</span> XMLHttpRequest(); x.onreadystatechange =<span><span>function</span><span>()</span> {</span><span>if</span>(x.readyState == <span>4</span>) { <span>if</span>(x.status == <span>200</span>) { console.log(<span>"The server replied with: "</span> + x.responseText); txt.text = x.responseText; } } }; <span>var</span> xxx =<span>new</span><span>Object</span>; <span>var</span> d=myapp.readimg(<span>":/1.jpg"</span>); console.log(<span>typeof</span> d) x.open(<span>"POST"</span>,<span>"http://localhost/mycode/Test/reg.php"</span>,<span>true</span>); console.log(d) <span>//post请求要自己设置请求头</span> x.setRequestHeader(<span>"Content-Type"</span>,<span>"application/x-www-form-urlencoded"</span>); x.send(d); }</code>
<code><span><span><?php</span><span>$filename</span>=<span>"teststream.jpg"</span>;<span>//要生成的图片名字 </span><span>$data_buff</span>=file_get_contents(<span>"php://input"</span>); <span>echo</span><span>$data_buff</span>; <span>$jpg</span> = pack(<span>"H*"</span>,<span>$data_buff</span>);<span>//得到post过来的二进制原始数据 </span><span>$file</span> = fopen(<span>"pic/"</span>.<span>$filename</span>,<span>"wb"</span>);<span>//打开文件准备写入</span> fwrite(<span>$file</span>,<span>$jpg</span>);<span>//写入</span> fclose(<span>$file</span>);<span>//关闭</span><span>?></code>
以上就介绍了 PHP入门5 C++和PHP二进制传输,包括了方面的内容,希望对PHP教程有兴趣的朋友有所帮助。