springboot - set virtual directory for built-in tomcat

need

The project is developed using springboot and deployed as a jar package. All files uploaded in the project are saved to the upload directory under D judgment.

Enter http://localhost:8080/upload/logo_1.jpg in the browser to access the logo_1.png image in the upload directory of the D drive

 

 

Solution

Because the jar package method is used, the method of configuring a virtual directory for tomcat cannot be used. It is necessary to set a virtual directory for the built-in tomcat of springboot.

 

accomplish

 

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;


@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/upload/**").addResourceLocations("file:D:/upload/");       
    }

}

 

Start the project and enter http://localhost:8080/upload/logo_1.jpg in the browser to access the pictures normally.

 

In the above example, the request intercepted by the interceptor and the file upload directory are hard-coded, and can be placed in the application.properties configuration file for easy modification. The modified code is as follows:

 

application.properties

server.port=8080

#Access path for static resources exposed to the outside world
file.staticAccessPath=/upload/**
#File upload directory
file.uploadFolder=D:\\upload

 

FileUploadProperteis.java

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

/**
 * File upload related properties
 * @create 2018-04-22 13:58
 **/
@Component
@ConfigurationProperties(prefix = "file")
public class FileUploadProperteis {

    // The access path of static resources exposed to the outside world 
    private String staticAccessPath;

    // File upload directory 
    private String uploadFolder ;

    public String getStaticAccessPath() {
        return staticAccessPath;
    }

    public void setStaticAccessPath(String staticAccessPath) {
        this.staticAccessPath = staticAccessPath;
    }

    public String getUploadFolder() {
        return uploadFolder;
    }

    public void setUploadFolder(String uploadFolder) {
        this.uploadFolder = uploadFolder;
    }
}

 

WebMvcConfig.java

import com.lnjecit.springboothelloworld.properties.FileUploadProperteis;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;


@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {

    @Autowired
    private FileUploadProperteis fileUploadProperteis;

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler(fileUploadProperteis.getStaticAccessPath()).addResourceLocations("file:" + fileUploadProperteis.getUploadFolder() + "/");       
    }

}

 

Demo download address: https://github.com/linj6/springboot-learn/tree/master/springboot-helloworld

 

References

1、https://liuyanzhao.com/7599.html