Angular 9 open file after download springboot sql serve code example

Example 1: endpoint to upload and retrieve image in database using spring boot

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>Details are given below:</h1><hr>
<table>
<tr>
<td>Id</td>
<td>${id}</td>
</tr>
<tr>
<td>Name</td>
<td>${name}</td>
</tr>
<tr>
<td>Image</td>
<td><img src="data:image/jpg;base64,${image} alt="Girl in a jacket" style="width:50px;height:50px;"></img></td>
</tr>
</table>
</body>
</html>

Example 2: endpoint to upload and retrieve image in database using spring boot

package com.vasu.SpringBootFileUpload.controller;

import com.vasu.SpringBootFileUpload.Model.MyModel;
import com.vasu.SpringBootFileUpload.Service.MyService;
import java.util.Base64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

/**
 *
 * @author Vasu Rajput
 */
@Controller
public class MyController {

    private static final Logger logger = LoggerFactory.getLogger("MyController.class");
    @Autowired
    private MyService myService;

    @GetMapping("/")
    public String test() {
        return "index";
    }

    @PostMapping("/fileupload")
    public String fileUpload(@RequestParam("name") String name, @RequestParam("file") MultipartFile file) {
        try {
            logger.info("Name= " + name);
            byte[] image = file.getBytes();
            MyModel model = new MyModel(name, image);
            int saveImage = myService.saveImage(model);
            if (saveImage == 1) {
                return "success";
            } else {
                return "error";
            }
        } catch (Exception e) {
            logger.error("ERROR", e);
            return "error";
        }
    }

    @GetMapping("/getDetail/{id}")
    public String getDbDetils(@PathVariable String id, Model model) {
        try {
            logger.info("Id= " + id);
            MyModel imagesObj = myService.getImages(Long.parseLong(id));
            model.addAttribute("id", imagesObj.getId());
            model.addAttribute("name", imagesObj.getName());
            byte[] encode = java.util.Base64.getEncoder().encode(imagesObj.getImage());
            model.addAttribute("image", new String(encode, "UTF-8"));
            return "imagedetails";
        } catch (Exception e) {
            logger.error("Error", e);
            model.addAttribute("message", "Error in getting image");
            return "redirect:/";
        }
    }
}

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Javascript Example

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