在网上找了很多例子，不能完全契合自己的需求，自行整理了下。需求是这样的：项目小，所以不需要单独的图片服务器，图片保存在服务器中任意的地方，并且可以通过访问服务器来获取图片。话不多说上代码：
1、依赖
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<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>
<!-- apache.commons -->
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>``2.6``</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>``1.3``.``2``</version>
</dependency>
2、文件上传工具类
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package com.slovi.utils;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;
import org.springframework.web.multipart.MultipartFile;
public class FileUpload {
/**
* 文件上传处理
*
* @param file
* @return
*/
public static String writeUploadFile(MultipartFile file,String module) {
String filename = file.getOriginalFilename();
String realpath = "D:/rentHouse/" + module +``"/"``;
File fileDir = new File(realpath);
if (!fileDir.exists())
fileDir.mkdirs();
String extname = FilenameUtils.getExtension(filename);
String allowImgFormat = "gif,jpg,jpeg,png"``;
if (!allowImgFormat.contains(extname.toLowerCase())) {
return "NOT_IMAGE"``;
}
filename = Math.abs(file.getOriginalFilename().hashCode()) + RandomUtils.createRandomString( 4 ) + "." + extname;
InputStream input = null``;
FileOutputStream fos = null``;
try {
input = file.getInputStream();
fos = new FileOutputStream(realpath + "/" + filename);
IOUtils.copy(input, fos);
} catch (Exception e) {
e.printStackTrace();
return null``;
} finally {
IOUtils.closeQuietly(input);
IOUtils.closeQuietly(fos);
}
return "/" + filename;
}
}
3、随机数生成工具类
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package com.slovi.utils;
public class RandomUtils {
private static final String charlist = "0123456789"``;
public static String createRandomString(``int len) {
String str = new String();
for (``int i = 0``; i < len; i++) {
str += charlist.charAt(getRandom(charlist.length()));
}
return str;
}
public static int getRandom(``int mod) {
if (mod < 1``) {
return 0``;
}
int ret = getInt() % mod;
return ret;
}
private static int getInt() {
int ret = Math.abs(Long.valueOf(getRandomNumString()).intValue());
return ret;
}
private static String getRandomNumString() {
double d = Math.random();
String dStr = String.valueOf(d).replaceAll(``"[^\\d]"``, ""``);
if (dStr.length() > 1``) {
dStr = dStr.substring(``0``, dStr.length() - 1``);
}
return dStr;
}
}
4、控制类
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package com.slovi.controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import com.slovi.utils.FileUpload;
@RestController
@RequestMapping``(``"/Advert"``)
public class AdvertController {
@Autowired
private AdvertInfoService advertInfoService;
@PostMapping``(``"/upload"``)
public Object upload(``@RequestParam``(``"file"``) MultipartFile file) {
String filename = FileUpload.writeUploadFile(file,``"advert"``);
return filename;
}
}
5、配置类
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package com.slovi.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler(``"/static/**"``).addResourceLocations(``"classpath:/static/"``);
registry.addResourceHandler(``"/advertIMG/**"``).addResourceLocations(``"file:D:/rentHouse/"``);
}
}
6、测试页面，放到resources/templates包下
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<!DOCTYPE html>
<html lang=``"en" xmlns:th=``"http://www.thymeleaf.org"``>
<head>
<meta charset=``"UTF-8"``/>
<title>Title</title>
</head>
<body>
<form action=``"/upload" th:action=``"@{/upload}" method=``"post" enctype=``"multipart/form-data" >
<label>上传图片</label>
<input type=``"file" name=``"file"``/>
<input type=``"submit" value=``"上传"``/>
</form>
</body>
</html>
启动项目，访问：localhost:8888,进入上传页面，上传成功会返回图片名称，例如：11348371257146.jpg，然后访问http://localhost:8888/advertIMG/11348371257146.jpg,可以获取到图片。
