From 4072902ae1ba5cf5f1200c9c8a5f8016bc7e07f6 Mon Sep 17 00:00:00 2001
From: Rick <1450685+LinuxSuRen@users.noreply.github.com>
Date: Thu, 3 Oct 2024 18:13:27 +0800
Subject: [PATCH] support to save the uploaded file (#29)

* support to save the uploaded file

* update readme

---------

Co-authored-by: rick <LinuxSuRen@users.noreply.github.com>
---
 README.md                                           |  5 +++++
 .../github/devopsws/demo/service/FileService.java   | 10 ++++++++--
 .../github/devopsws/demo/service/RootService.java   | 13 +++++++++++++
 3 files changed, 26 insertions(+), 2 deletions(-)
 create mode 100644 src/main/java/io/github/devopsws/demo/service/RootService.java

diff --git a/README.md b/README.md
index d5a8778..f200b1a 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,11 @@ Run with Maven command:
 mvn spring-boot:run
 ```
 
+Change the listen port:
+```shell
+java -jar demo.jar --server.port=8081
+```
+
 ## OpenAPI definition
 You can visit it via: http://localhost:8080/v3/api-docs
 
diff --git a/src/main/java/io/github/devopsws/demo/service/FileService.java b/src/main/java/io/github/devopsws/demo/service/FileService.java
index 03090f9..d3e3587 100644
--- a/src/main/java/io/github/devopsws/demo/service/FileService.java
+++ b/src/main/java/io/github/devopsws/demo/service/FileService.java
@@ -1,5 +1,8 @@
 package io.github.devopsws.demo.service;
 
+import java.io.FileOutputStream;
+
+import org.springframework.util.FileCopyUtils;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
@@ -16,8 +19,11 @@ public Message<?> upload(@RequestParam("file") MultipartFile file) {
         System.out.println("Received file uploading request");
         Message<String> message = new Message<String>();
         if (!file.isEmpty()) {
-            try {
-                System.out.println("Uploading file size:" + file.getSize());
+            String filename = file.getOriginalFilename();
+            try (FileOutputStream out = new FileOutputStream(filename)) {
+                System.out.println("Uploading file size: " + file.getSize() + ", name: " + filename);
+
+                FileCopyUtils.copy(file.getInputStream(), out);
 
                 message.setMessage("ok");
             } catch (Exception e) {
diff --git a/src/main/java/io/github/devopsws/demo/service/RootService.java b/src/main/java/io/github/devopsws/demo/service/RootService.java
new file mode 100644
index 0000000..35f4927
--- /dev/null
+++ b/src/main/java/io/github/devopsws/demo/service/RootService.java
@@ -0,0 +1,13 @@
+package io.github.devopsws.demo.service;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController("/")
+public class RootService {
+
+    @GetMapping("")
+    public String index() {
+        return "Let's learn spring boot!";
+    }
+}