One, based on yml or properties configuration file
The uploaded file is stored in a certain directory on a certain disk, such as E:/Practices/test
Specific placement:
web:
upload-path: E:/Practices/test
front-path: E:/Practices
spring:
resources:
static-locations: file:${web.upload-path},file:${web.front-path}Access method: IP+port/file name
现在：http://localhost:8003/1442823076292.jpeg
Note: There is no need to configure what loading configuration class, the uploaded file is to E:/Practices/test. The file is shown as accessed above.
2. Based on the springboot configuration class, change the original default configuration
I will not repeat the upload process here, but briefly describe its uploading ideas:
The uploaded file is stored in a certain directory on a certain disk, such as E:/Video Production/Picture/
Map the local storage file directory to the project path through the configuration file class WebMvcConfig, check the configuration class for details
The project starts and the configuration class is loaded.
The configuration classes are as follows:
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
String path = "E:\\Practices\\";//"/tools/images/";//"E:/视频制作/图片/";
// 上传路径映射 会使spring boot的自动配置失效
registry.addResourceHandler("/image/**").addResourceLocations("file:" + path);
super.addResourceHandlers(registry);
}
}meaning:
Project access to the image path will directly access the files under the path path
interview method:
原来：file:///E:/%E8%A7%86%E9%A2%91%E5%88%B6%E4%BD%9C/%E5%9B%BE%E7%89%87/1442823076292.jpeg
right now:
http://localhost:9001/image/1442823076292.jpeg
http://localhost:9001/image/one/1442823076292.jpeg
3. Access based on absolute path
Simple idea:
Obtain a directory under resources, such as the static folder. The method of obtaining is as follows:
File staticFilePath = ResourceUtils.getFile("classpath:static");
According to the obtained path, create a new path and upload the file. For details, see the method uploadToProject of AbsolutePathController
Based on the default configuration, there is no need to add configuration classes.
If you add a configuration class, change the original path situation, you need to add:
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/**").addResourceLocations("classpath:/static/");
super.addResourceHandlers(registry);
}
Comparative analysis: The uploaded file is placed in the resources directory of the project, and the file actually loaded is the file under the absolute path, such as image/1442823076292.jpeg. The main principle is still file mapping. When visiting, directly http://localhost:9001/images/1442823076292.jpeg
Note: Projects started in the form of jar packages are not applicable. The host has not found a good plan for the time being. There is a good plan. Please share it a lot, thank you. You can debug and play locally. In production, it is recommended to use an external path
Four, access based on Nginx configuration
Simple idea:
Upload the file to a certain path, such as C:/file
Use Nginx server, configure the access path and map it to the file upload path
The following is the configuration of Nginx
Configure based on alias
location /static/ {
alias /var/www/static/;
}alas will treat the specified path as the file path
Note: "/" must be added to the directory specified by alias, that is, /var/www/static/ cannot be changed to /var/www/static. When accessing http://IP:PORT/static/index.html, the actual access The implementation is /var/www/static/index.html, similar to the configuration class based on springboot
Based on the configuration root
location /static/ {
root /var/www/;
}Root will splice the specified path to the file path before accessing
Note: The /static/ specified in location must actually exist in the /var/www/ directory specified by root. Visit http://127.0.0.1:7001/static/t.txt through a browser, then the file to access the server is /var/www/static/t.txt
Project example:
https://github.com/krycai/gc-framework/tree/master/gc-upload
Explain a more detailed example: https://www.javatt.com/p/11507