SpringBoot视频播放（Mac下开发）

一、准备

mp4视频对格式有要求，视频编码要设置为 AVC(H264) ，音视频编码要设置为 AAC。详情见参考一。

视频静态资源存放在resources/static/1.mp4。此外还需在pom.xml配置，以便编译时将静态资源加入，如下

<!--用于保证将src/main/java下的xml等文件，能自动复制到classes文件夹中-->
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <!--<include>**/*.*</include>-->
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                    <include>**/*.yml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <!--<include>**/*.*</include>-->
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                    <include>**/*.yml</include>
                    <include>**/*.xlsx</include>
                    <include>**/*.mp4</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>

**注意：**resources标签存在于project中的build标签下

二、代码

**注意：**具体代码参考于参考二，但由于我的硬件环境原因，参考二的代码并不能在我的电脑上正常运行，遂作出一些修改

新建类用于返回视频流

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);
    }

}

Controller实现

import lombok.AllArgsConstructor;
import org.apache.commons.lang3.StringUtils;
import org.springframework.util.ClassUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.activation.MimetypesFileTypeMap;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

@RestController
@RequestMapping("/file")
@AllArgsConstructor
public class FileRestController {

    private final NonStaticResourceHttpRequestHandler nonStaticResourceHttpRequestHandler;

    @GetMapping("video")
    public void videoPreview(HttpServletRequest request, HttpServletResponse response) throws Exception {

        String sourcePath = ClassUtils.getDefaultClassLoader().getResource("").getPath().substring(1);
      	// 在mac环境下前面不加“/”读不到文件
        String realPath = "/" + sourcePath + "static/1.mp4";
        File file = new File(realPath);
        Path filePath = Paths.get(realPath);
        if (Files.exists(filePath)) {
          	// 这里也对参考代码作出修改，原先的Files.probeContentType(filePath)返回为null
            MimetypesFileTypeMap m = new MimetypesFileTypeMap(filePath.toString());
            String mimeType = m.getContentType(file);
            if (!StringUtils.isEmpty(mimeType)) {
                response.setContentType(mimeType);
            }
            request.setAttribute(NonStaticResourceHttpRequestHandler.ATTR_FILE, filePath);
            nonStaticResourceHttpRequestHandler.handleRequest(request, response);
        } else {
            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
            response.setCharacterEncoding(StandardCharsets.UTF_8.toString());
        }
    }
    
}

三、测试

输入http://localhost:8080/file/video即可得到视频

参考

• https://blog.csdn.net/Dear_xaiobo/article/details/95186205

• https://blog.csdn.net/weixin_38759449/article/details/104496464