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- Install and Configure
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- Server Upload
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- S3 Upload
- Resize
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- Image Manager
- Simple Server
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- Server Upload
- Server Delete
- S3 Upload
- Validation
- References
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- S3
Java Image Resize
How it works
- The image gets uploaded to your server.
- When the image is stored to the disk on server side, it is also resized.
Image Upload
In the Server Upload article we explain the steps to upload image on your server. After you insert an image in the rich text editor, you can resize it, but this only changes the width and height displayed in the browser, and not the physical size of the image. That should be done on server side.
Resize Image
The WYSIWYG editor's Java SDK comes with the possibility to resize the image when it is being stored on the disk. It is using the Java Thumbnails.Builder.size or Java Thumbnails.Builder.forceSize methods, therefore all the options available for it can be used.
// Use default validation with image resize; ImageOptions options = new ImageOptions(); options.setResize(width, height, keepAspectRatio);
Complete Example
<script> $(function() { $('.selector').froalaEditor({ // Set the image upload URL. imageUploadURL: '/upload_image_resize', imageUploadParams: { id: 'my_editor' } }) }); </script>
package com.froala.examples.servlets; import java.io.IOException; import java.util.HashMap; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.annotation.MultipartConfig; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.froala.editor.Image; import com.froala.editor.image.ImageOptions; import com.google.gson.Gson; /** * Servlet implementation class UploadImageResize */ @WebServlet("/upload_image_resize") @MultipartConfig public class UploadImageResize extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public UploadImageResize() { super(); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse * response) */ @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String fileRoute = "/public/"; // Use default validation with image resize; ImageOptions options = new ImageOptions(); options.setResize(300, 300, false); Map<Object, Object> responseData; try { responseData = Image.upload(request, fileRoute, options); } catch (Exception e) { e.printStackTrace(); responseData = new HashMap<Object, Object>(); responseData.put("error", e.toString()); } String jsonResponseData = new Gson().toJson(responseData); response.setContentType("application/json"); response.setCharacterEncoding("UTF-8"); response.getWriter().write(jsonResponseData); } }