java - 从 web 服务返回图像

Question

我想向 Web 服务发出请求，该服务将根据请求参数返回图像？对此最好的方法是什么？

Answer 1

只需制作一个 Servlet 服务图像，将参数传递给它基于参数的处理图像并作为响应返回，这将作为一个 REST Web 服务，您也可以使用一些标准的 Web 服务实现来实现这一点

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还要检查

• BalusC的image servlet的实现

Answer 2

By web service you mean something in the web, or a Web Service using SOAP over HTTP?

If it's the first thing I should write a Servlet that depending on request parameters write the bytes of the image to the output stream (setting appropiate headers like Content-Type).

doGet(...) {
   request.setContentHeader("Content-Type", "image/jpeg");
   // write image bytes to request.getOutputStream()
   ...
}

If it's the second thing simply return a byte[] with the content. Or... if you need also the content-type, return a structure with content-type: string and data: byte[].