本文介绍了一种使用 Spring MVC 控制器来显示工作流定义图形的方法。通过获取请求参数中的流程定义 ID，从服务中读取对应的图像字节，并将其输出到客户端。
用spring controller显示图形
public ModelAndView getPicture(HttpServletRequest request,
HttpServletResponse response) {
String processDefinitionId = request
.getParameter("processDefinitionId");
byte[] bytes = adminServices.getProcessImageBytes(processDefinitionId); //获得图片的Byte[]
OutputStream out = null;
try {
out = response.getOutputStream();
out.write(bytes); //打印图片
out.flush();
} catch (IOException ex) {
}
return null;
}
public ModelAndView getPicture(HttpServletRequest request,
HttpServletResponse response) {
String processDefinitionId = request
.getParameter("processDefinitionId");
byte[] bytes = adminServices.getProcessImageBytes(processDefinitionId); //获得图片的Byte[]
OutputStream out = null;
try {
out = response.getOutputStream();
out.write(bytes); //打印图片
out.flush();
} catch (IOException ex) {
}
return null;
}
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