SVG 文字列をコントローラーに送信しようとしていますが、サーバーに到達すると null になります。
$.ajax({
type: "GET",
url: "/chart/GetChartImage",
data: JSON.stringify({ svgString: svg }),
dataType: "text",
contentType: "application/text; charset=utf-8"
}).done(function (data) {
debugger
});
送信されるデータ:
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37.4 Z\"></path><path fill=\"#2f7ed8\" d=\"M 72.77511961722489 216.8 C 78.10311961722489 216.8 78.10311961722489 224.8 72.77511961722489 224.8 C 67.44711961722489 224.8 67.44711961722489 216.8 72.77511961722489 216.8 Z\"></path><path fill=\"#2f7ed8\" d=\"M 35.45454545454545 299.6 C 40.782545454545456 299.6 40.782545454545456 307.6 35.45454545454545 307.6 C 30.126545454545454 307.6 30.126545454545454 299.6 35.45454545454545 299.6 Z\"></path><path fill=\"none\" d=\"M 25.454545454545453 303.6 L 35.45454545454545 303.6 L 72.77511961722489 220.8 L 110.09569377990431 41.4 L 147.41626794258374 331.2 L 184.73684210526315 276 L 222.05741626794259 303.6 L 259.377990430622 262.2 L 296.69856459330146 317.4 L 334.01913875598086 289.8 L 371.3397129186603 303.6 L 408.66028708133973 289.8 L 445.98086124401914 303.6 L 483.3014354066986 276 L 520.622009569378 303.6 L 557.9425837320574 289.8 L 595.2631578947369 303.6 L 669.9043062200957 234.6 L 707.2248803827752 331.2 L 744.5454545454546 234.6 L 754.5454545454546 234.6\" class=\"highcharts-tracker highcharts-tracker\" stroke-linejoin=\"round\" visibility=\"visible\" stroke-opacity=\"0.0001\" stroke=\"rgb(192,192,192)\" stroke-width=\"22\" style=\"\"></path></g></g><text x=\"400\" y=\"25\" style=\"font-family:'lucida grande', 'lucida sans unicode', verdana, arial, helvetica, sans-serif;font-size:10px;color:#274b6d;fill:#274b6d;\" text-anchor=\"middle\" class=\"highcharts-title\" ><tspan x=\"400\">Competitor Trend</tspan></text><g class=\"highcharts-legend\" transform=\"translate(296,30)\"><rect rx=\"5\" ry=\"5\" fill=\"none\" x=\"0.5\" y=\"0.5\" width=\"208\" height=\"26\" stroke=\"#909090\" stroke-width=\"1\" visibility=\"visible\"></rect><g clip-path=\"url(#highcharts-17)\"><g><g class=\"highcharts-legend-item\" transform=\"translate(8,3)\"><path fill=\"none\" d=\"M 0 11 L 16 11\" stroke=\"#2f7ed8\" stroke-width=\"2\"></path><path fill=\"#2f7ed8\" d=\"M 8 7 C 13.328 7 13.328 15 8 15 C 2.6719999999999997 15 2.6719999999999997 7 8 7 Z\"></path><text x=\"21\" y=\"15\" style=\"font-family:'lucida grande', 'lucida sans unicode', verdana, arial, helvetica, sans-serif;font-size:12px;cursor:pointer;color:#274b6d;fill:#274b6d;\" text-anchor=\"start\" ><tspan x=\"21\">European Commission (2261)</tspan></text></g></g></g></g><g class=\"highcharts-axis-labels\" ></g><g class=\"highcharts-axis-labels\" ></g><g class=\"highcharts-tooltip\" style=\"cursor:default;padding:0;white-space:nowrap;\" visibility=\"hidden\"><rect rx=\"3\" ry=\"3\" fill=\"none\" x=\"0.5\" y=\"0.5\" width=\"16\" height=\"16\" fill-opacity=\"0.85\" stroke=\"black\" stroke-opacity=\"0.049999999999999996\" stroke-width=\"5\" transform=\"translate(1, 1)\"></rect><rect rx=\"3\" ry=\"3\" fill=\"none\" x=\"0.5\" y=\"0.5\" width=\"16\" height=\"16\" fill-opacity=\"0.85\" stroke=\"black\" stroke-opacity=\"0.09999999999999999\" stroke-width=\"3\" transform=\"translate(1, 1)\"></rect><rect rx=\"3\" ry=\"3\" fill=\"none\" x=\"0.5\" y=\"0.5\" width=\"16\" height=\"16\" fill-opacity=\"0.85\" stroke=\"black\" stroke-opacity=\"0.15\" stroke-width=\"1\" transform=\"translate(1, 1)\"></rect><rect rx=\"3\" ry=\"3\" fill=\"rgb(255,255,255)\" x=\"0.5\" y=\"0.5\" width=\"16\" height=\"16\" fill-opacity=\"0.85\"></rect><text x=\"8\" y=\"21\" style=\"font-family:'lucida grande', 'lucida sans unicode', verdana, arial, helvetica, sans-serif;font-size:12px;color:#333333;fill:#333333;\" ></text></g></svg>"}"
コントローラー:
[HttpGet]
public ActionResult GetChartImage(string svgString)
{
byte[] imageBytes;
byte[] bytes = new byte[svgString.Length * sizeof(char)];
System.Buffer.BlockCopy(svgString.ToCharArray(), 0, bytes, 0, bytes.Length);
//var byteArray = Encoding.ASCII.GetBytes(svg);
using (var stream = new MemoryStream(bytes))
{
var svgDocument = SvgDocument.Open(stream);
var bitmap = svgDocument.Draw();
bitmap.Save(stream, ImageFormat.Png);
imageBytes = stream.ToArray();
}
return new FileContentResult(imageBytes, "image/png");
}