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Uploading A Files with Spring MVC

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This commit is contained in:
Umesh Awasthi
2018-11-25 16:13:08 -08:00
parent d7eb83826a
commit 90861b74d1
4 changed files with 111 additions and 0 deletions
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35
Spring-Boot/spring-mvc-file-upload/src/main/java/com/javadevjournal/WebbAppInit.java Normal file
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package com.javadevjournal;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
import javax.servlet.MultipartConfigElement;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;
public class WebbAppInit implements WebApplicationInitializer {
private int MAX_UPLOAD_SIZE = 2 * 1024 * 1024;
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
rootContext.register(SpringMvcFileUploadApplication.class);
// Manage the lifecycle of the root application context
servletContext.addListener(new ContextLoaderListener(rootContext));
// Register and map the dispatcher servlet
ServletRegistration.Dynamic dispatcher =
servletContext.addServlet("dispatcher", new DispatcherServlet(rootContext));
dispatcher.setLoadOnStartup(1);
dispatcher.addMapping("/");
MultipartConfigElement multipartConfigElement = new MultipartConfigElement("/temp",
MAX_UPLOAD_SIZE, MAX_UPLOAD_SIZE * 2, 0);
}
}

35
Spring-Boot/spring-mvc-file-upload/src/main/java/com/javadevjournal/controller/FIleUploadController.java Normal file
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package com.javadevjournal.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
@Controller
public class FIleUploadController {
@GetMapping(value = "/saveFile")
public String getFileU(Model model){
return "uploadForm";
}
@PostMapping(value = "/saveFile")
public String handleFileUpload(@RequestParam("file") MultipartFile file, Model model) {
//Logic to store data in temp file or in DB
model.addAttribute("uploadedFile", file);
return "uploadForm";
}
@PostMapping(value = "/saveFiles")
public String handleFileUpload(@RequestParam("files") MultipartFile[] files, Model model) {
//Logic to store data in temp file or in DB
model.addAttribute("uploadedFile", files);
return "uploadForm";
}
}

17
Spring-Boot/spring-mvc-file-upload/src/main/resources/templates/file.html Normal file
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<html xmlns:th="http://www.thymeleaf.org">
<body>
<div th:if="${uploadedFile}">
<h2> Uploaded File Details </h2>
<table>
<tr>
${uploadedFile}
<td>FileName:</td>
<td>${uploadedFile.fileName}</td>
</tr>
<tr>
<td>Type:</td>
<td>${uploadedFile.contentType}</td>
</tr>
</table>
</div>

24
Spring-Boot/spring-mvc-file-upload/src/main/resources/templates/uploadForm.html Normal file
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<html xmlns:th="http://www.thymeleaf.org">
<body>
<div th:if="${uploadedFile}">
<h2> Uploaded File Details </h2>
<table>
<tr th:each="file: ${uploadedFile}">
<td th:text="${file.originalFilename}">File Name</td>
<td th:text="${file.contentType}">File Type:</td>
</tr>
</table>
</div>
<div>
<h2> Uploaded New File </h2>
<form method="POST" enctype="multipart/form-data" action="/saveFiles">
<table>
<tr><td>File to upload 1:</td><td><input type="file" name="files" /></td></tr>
<tr><td>File to upload 2:</td><td><input type="file" name="files" /></td></tr>
<tr><td></td><td><input type="submit" value="Upload" /></td></tr>
</table>
</form>
</div>
</body>
</html>