測試代碼
pom.xml
:
<?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 https://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>2.6.2</version>
</parent>
<packaging>jar</packaging>
<groupId>com.kaven</groupId>
<artifactId>springboot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot</name>
<description>springboot</description>
<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.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
application.properties
(配置檔案):
spring.servlet.multipart.max-file-size=500MB
spring.servlet.multipart.max-request-size=500MB
-
:指定允許上傳檔案的最大大小,預設值為max-file-size
。1MB
-
:指定允許max-request-size
請求的最大大小,預設值為multipart/form-data
。10MB
上傳接口:
package com.kaven.springboot.controller;
import org.apache.tomcat.util.http.fileupload.IOUtils;
import org.springframework.http.HttpStatus;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletResponse;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
@RestController
public class FilesController {
@PostMapping(value="/upload", headers="content-type=multipart/form-data")
public String upload(@RequestParam(value = "file") MultipartFile file,
HttpServletResponse response) throws IOException, InterruptedException {
System.out.println("有檔案上傳請求進來了");
FileOutputStream fileOutputStream = null;
InputStream inputStream = null;
try {
// 上傳檔案是否存在
if (file != null && !file.isEmpty()) {
// 如果上傳檔案存在,擷取它的原始檔案名
String fileName = file.getOriginalFilename();
if (StringUtils.hasText(fileName)) {
// 将上傳檔案存儲在伺服器的E盤下(Windows)
java.io.File outFile = new java.io.File("E:\\" + fileName);
// 基于outFile建立檔案輸出流執行個體
fileOutputStream = new FileOutputStream(outFile);
// 擷取上傳檔案的輸入流
inputStream = file.getInputStream();
/*
* 将位元組從輸入流複制到輸出流
* 此方法在内部會緩沖輸入,是以無需使用BufferedInputStream
* 大型流(超過2GB)将在複制完成後傳回位元組複制值-1 ,因為無法将正确的位元組數作為int傳回
* 對于大型流,需要使用copyLarge(InputStream, OutputStream)方法
* 參數:
* input – 要讀取的InputStream
* output - 要寫入的OutputStream
* */
IOUtils.copy(inputStream, fileOutputStream);
}
}
else {
// 檔案不存在
response.setStatus(HttpStatus.BAD_REQUEST.value());
return "檔案不存在";
}
} catch (Exception e) {
// 檔案上傳錯誤
e.printStackTrace();
response.setStatus(HttpStatus.INTERNAL_SERVER_ERROR.value());
return "檔案上傳錯誤";
} finally {
if (fileOutputStream != null) {
fileOutputStream.flush();
fileOutputStream.close();
}
}
// 檔案上傳成功
response.setStatus(HttpStatus.OK.value());
return "檔案上傳成功";
}
}
啟動類:
package com.kaven.springboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringbootApplication {
public static void main(String[] args) {
SpringApplication application = new SpringApplication(SpringbootApplication.class);
application.run(args);
}
}
使用
Postman
進行測試。
上傳的檔案是完整的,可以播放(視訊檔案)。
上傳檔案不存在。
控制台的輸出。