Detailed explanation of JSP obtaining local image instance
IE version 7 or above does not support writing local hard disk address directly on src to display pictures. Because we can only display pictures in the foreground by reading binary streams in the response in the background.
The specific code is as follows:
public void showPicture(){
String id = ().getParameter("id");//The primary key id of the entity class of the image path from the front desk HttpServletResponse response = ();// struts2 get response if(id != null && !"".equals(id)){
= (id);
String pic_path = ();//Picture path FileInputStream is;
try {
is = new FileInputStream(pic_path);
int i = (); // Get the file size byte data[] = new byte[i];
(data); // Read data ();
("image/*"); // Set the returned file type OutputStream toClient = (); // Get the object that outputs binary data to the client (data); // Output data ();
} catch (FileNotFoundException e) {
();
} catch (IOException e) {
();
}
}
}
The jsp page is very simple, the path format is, http://localhost:8080/projectName/*.action:prama=XXX
<img alt="" src="<%=basePath %>ClassicCasesAction!?id=${}">
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