Spring Boot 2.x基础教程：实现文件上传

2.x/README.md

@@ -101,6 +101,7 @@
 
 - [Spring Boot 2.x基础教程：使用 Thymeleaf开发Web页面](http://blog.didispace.com/spring-boot-learning-21-4-1/)
 - [Spring Boot 2.x基础教程：使用 ECharts 绘制各种华丽的数据图表](http://blog.didispace.com/spring-boot-learning-21-4-2/)
+- [Spring Boot 2.x基础教程：实现文件上传](http://blog.didispace.com/spring-boot-learning-21-4-3/)
 
 ## 版本资讯
 

2.x/README_zh.md

@@ -102,6 +102,7 @@
 
 - [Spring Boot 2.x基础教程：使用 Thymeleaf开发Web页面](http://blog.didispace.com/spring-boot-learning-21-4-1/)
 - [Spring Boot 2.x基础教程：使用 ECharts 绘制各种华丽的数据图表](http://blog.didispace.com/spring-boot-learning-21-4-2/)
+- [Spring Boot 2.x基础教程：实现文件上传](http://blog.didispace.com/spring-boot-learning-21-4-3/)
 
 ## 版本资讯
 

2.x/chapter4-3/.gitignore

@@ -0,0 +1,29 @@
+HELP.md
+/target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+/build/
+
+### VS Code ###
+.vscode/

2.x/chapter4-3/pom.xml

@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.4.1</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+
+	<groupId>com.didispace</groupId>
+	<artifactId>chapter4-3</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+
+	<properties>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-thymeleaf</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<scope>provided</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

2.x/chapter4-3/src/main/java/com/didispace/chapter43/Chapter43Application.java

@@ -0,0 +1,13 @@
+package com.didispace.chapter43;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Chapter43Application {
+
+	public static void main(String[] args) {
+		SpringApplication.run(Chapter43Application.class, args);
+	}
+
+}

2.x/chapter4-3/src/main/java/com/didispace/chapter43/UploadController.java

@@ -0,0 +1,46 @@
+package com.didispace.chapter43;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.File;
+import java.io.IOException;
+
+@Controller
+@Slf4j
+public class UploadController {
+
+    @Value("${file.upload.path}")
+    private String path;
+
+    @GetMapping("/")
+    public String uploadPage() {
+        return "upload";
+    }
+
+    @PostMapping("/upload")
+    @ResponseBody
+    public String create(@RequestPart MultipartFile file) {
+
+        String fileName = file.getOriginalFilename();
+        String filePath = path + fileName;
+
+        String message;
+        File dest = new File(filePath);
+        try {
+            file.transferTo(dest);
+            message = "Upload file success : " + dest.getAbsolutePath();
+        } catch (IOException e) {
+            log.error(e.getMessage(), e);
+            message = "Upload file failed : " + e.getMessage();
+        }
+        return message;
+    }
+
+}

2.x/chapter4-3/src/main/resources/application.properties

@@ -0,0 +1,5 @@
+
+spring.servlet.multipart.max-file-size=2MB
+spring.servlet.multipart.max-request-size=2MB
+
+file.upload.path=/Users/didi/

2.x/chapter4-3/src/main/resources/templates/upload.html

@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+<head lang="en">
+    <meta charset="UTF-8" />
+    <title>文件上传页面</title>
+</head>
+<body>
+<h1>文件上传页面</h1>
+<form method="post" action="/upload" enctype="multipart/form-data">
+    选择要上传的文件：<input type="file" name="file"><br>
+    <hr>
+    <input type="submit" value="提交">
+</form>
+</body>
+</html>

2.x/chapter4-3/src/test/java/FileTest.java

@@ -0,0 +1,11 @@
+import org.junit.jupiter.api.Test;
+
+public class FileTest {
+
+    @Test
+    public void uploadFile() throws Exception {
+
+
+    }
+
+}

2.x/pom.xml

@@ -44,6 +44,7 @@
         <!-- Web开发 -->
         <module>chapter4-1</module>  <!-- 使用 Thymeleaf开发Web页面 -->
         <module>chapter4-2</module>  <!-- 使用 ECharts 绘制折线图 -->
+        <module>chapter4-3</module>  <!-- 文件的上传与下载 -->
 
         <!-- 各种缓存 -->
         <module>chapter5-1</module>  <!-- 使用进程内缓存 -->