Spring实现音视频预览接口

Spring实现音视频预览接口，可点击进度条，可下载视频。

NonStaticResourceHttpRequestHandler

import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.resource.ResourceHttpRequestHandler;

import javax.servlet.http.HttpServletRequest;
import java.nio.file.Path;

@Component
public class NonStaticResourceHttpRequestHandler extends ResourceHttpRequestHandler {

    public final static String ATTR_FILE = "NON-STATIC-FILE";

    @Override
    protected Resource getResource(HttpServletRequest request) {
        final Path filePath = (Path) request.getAttribute(ATTR_FILE);
        return new FileSystemResource(filePath);
    }
}

PlayerController

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

@RestController
public class PlayerController {

    @Autowired
    private NonStaticResourceHttpRequestHandler nonStaticResourceHttpRequestHandler;

    @GetMapping("/getPlayResource")
    public void getPlayResource(HttpServletRequest request,
                                HttpServletResponse response) {
        try {
            // 文件路径，绝对路径
            // String realPath = "E:\\Project\\Java\\demo\\demo\\src\\main\\resources\\static\\test.mp4";
            String realPath = "E:\\Project\\Java\\demo\\demo\\src\\main\\resources\\static\\test.mp3";
            Path filePath = Paths.get(realPath);
            // 音视频文件存在
            if (Files.exists(filePath)) {
                String mimeType = Files.probeContentType(filePath);
                if (!StringUtils.isEmpty(mimeType)) {
                    response.setContentType(mimeType);
                }
                request.setAttribute(NonStaticResourceHttpRequestHandler.ATTR_FILE, filePath);
                nonStaticResourceHttpRequestHandler.handleRequest(request, response);
            } else {
                // 音视频文件不存在
                response.setStatus(HttpServletResponse.SC_NOT_FOUND);
                response.setCharacterEncoding(StandardCharsets.UTF_8.toString());
            }
        } catch (IOException | ServletException e) {
            System.out.println(e.getMessage());
        }
    }
}

实现效果