Detailed examples of JSP capturing local images
IE version 7 or above does not support writing local hard disk addresses directly on SRC to display pictures. Because we only display pictures in the foreground by reading the binary stream in response in the background.
The code is as follows:
public void showPicture(){
String id = ServletActionContext. getRequest (). getParameter ("id"); and // the primary key ID of the stored image path entity class from the foreground
HttpServletResponse = ServletActionContext. getResponse (); //struts2 gets response
if(id != null && !"".equals(id)){
this.classicCases = this.classicCasesManager.findClassicCasesById(id);
String pic_path = this. classicCases. getImagesLocalPath ();// Picture Path
FileInputStream is;
try {
is = new FileInputStream(pic_path);
Int i = is. available (); // Get file size
byte data[] = new byte[i];
Is. read (data); // read data
is.close();
Response.setContentType ("image/*"); // Sets the file type returned
OutputStream to Client = response. getOutputStream (); // Gets the object that outputs binary data to the client
ToClient. write (data); // Output data
toClient.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}The JSP page is simple, and the path format is http://localhost:8080/projectName/*.action:prama=XXX.
<img alt="" src="<%=basePath %>ClassicCasesAction!showPicture.action?id=${classicCases.id}">
If you have any questions, please leave a message or go to our community for discussion. Thank you for reading. I hope I can help you. Thank you for your support.