spring boot本地上传图片
<?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>2.1.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>cn.com.sctic</groupId>
<artifactId>upload</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>upload</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</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>
控制器: UploadController
@Controller
public class UploadController {
private Logger logger = LoggerFactory.getLogger(this.getClass());
@Value("${scitc.upload.src}")
private String rootPath;
@Value("${scitc.upload.host}")
private String uploadhost;
@RequestMapping(value = "/uploadFile",method = { RequestMethod.POST,RequestMethod.GET})
@ResponseBody
public String uploadFile(MultipartFile file) {
//文件的完整名称,如www.198bona.com
String filename = file.getOriginalFilename();
//文件名,如：深圳博纳网络
String name = filename.substring(0,filename.indexOf("."));
//文件后缀,如.jpeg
String suffix = filename.substring(filename.lastIndexOf("."));
//创建年月文件夹
Calendar date = Calendar.getInstance();
File dateDirs = new File(date.get(Calendar.YEAR)
+ File.separator + (date.get(Calendar.MONTH)+1));
//目标文件
File descFile = new File(rootPath+File.separator+dateDirs+File.separator+filename);
int i = 1;
//若文件存在重命名
String newFilename = filename;
while(descFile.exists()) {
newFilename = name+"("+i+")"+suffix;
String parentPath = descFile.getParent();
descFile = new File(parentPath+File.separator+newFilename);
i++;
}
//判断目标文件所在的目录是否存在
if(!descFile.getParentFile().exists()) {
//如果目标文件所在的目录不存在，则创建父目录
descFile.getParentFile().mkdirs();
}
//将内存中的数据写入磁盘
try {
file.transferTo(descFile);
} catch (Exception e) {
e.printStackTrace();
logger.error("上传失败，cause:{}",e);
}
//完整的url
String fileUrl = uploadhost + rootPath +dateDirs+ "/"+newFilename;
return "success:" + fileUrl;
}
}
注意：rootPath，uploadhost是可以通过application.properties或者application.yml进行配置的。
由于要对外部资源进行映射需要创建一个类继承WebMvcConfigurationSupport这个适配器，下面是WebMvcConfigurer的这个配置类,代码如下:
@Configuration
public class WebMvcConfigurer extends WebMvcConfigurationSupport {
@Value("${scitc.upload.src}")
private String src;
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler(src + "/**").addResourceLocations("file:" + src);
}
}
注意:这里的src也是从配置文件applicaiton.properties中得到了。