详解Java如何实现调用计算机摄像头拍照

2024-12-14 技术教程

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本例子使用基于Java rest API的页面操作，方便远程拍照

新建Spring Boot项目

pop.xml

<?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 https://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>2.2.5.RELEASE</version> <relativePath/>  </parent> <groupId>me.muphy</groupId> <artifactId>recorder</artifactId> <version>0.0.1-SNAPSHOT</version> <name>recorder</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-web</artifactId> </dependency> <dependency> <groupId>com.github.sarxos</groupId> <artifactId>webcam-capture</artifactId> <version>0.3.12</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build></project>

server.port=8080

#保存根路径

record.path=E:/workspace/share/

index.html

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>莫非照相机</title></head><body><div> <div><span><a href="/tp" rel="external nofollow" >拍照</a></span></div></div></body></html>

CameraController.java

package me.muphy.camera;import me.muphy.servicce.CameraService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RestController;@RestControllerpublic class CameraController { @Autowired private CameraService cameraService; @GetMapping("/tp") public String takePictures(String[] args) { String msg = cameraService.takePictures(); return "<div><span>" + msg + "</span></div><div>" + "<span><a href=\"/ll?d=/picture\" >点击查看所有照片</a></span>" + "<span style=\"margin-left: 20px;\"><a href=\"/\" >返回首页</a></span></div>"; }}

CameraService.java

package me.muphy.servicce;import com.github.sarxos.webcam.Webcam;import com.github.sarxos.webcam.WebcamResolution;import com.github.sarxos.webcam.WebcamUtils;import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Service;import java.io.File;import java.text.SimpleDateFormat;import java.util.Date;@Servicepublic class CameraService { @Value("${download.path:E:/workspace/download/}") private String downloadPath; public String takePictures() { Webcam webcam = Webcam.getDefault(); if (webcam == null) { return "没有找到摄像设备！"; } String filePath = downloadPath + "/picture/" + new SimpleDateFormat("yyyy-MM-dd").format(new Date()); File path = new File(filePath); if (!path.exists()) {//如果文件不存在，则创建该目录 path.mkdirs(); } String time = new SimpleDateFormat("yyyMMdd_HHmmss").format(new Date()); File file = new File(filePath + "/" + time + ".jpg"); webcam.setViewSize(WebcamResolution.VGA.getSize()); WebcamUtils.capture(webcam, file); return "拍照成功！"; }}

CameraApplication.java

package me.muphy;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class CameraApplication { public static void main(String[] args) { SpringApplication.run(CameraApplication.class, args); }}

当前电脑没有摄像头，因此是正常的

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