Java实现网页截屏功能（基于phantomJs）

Robot
利用JNI，调用第三方C/C++组件
DJNativeSwing组件
利用html2canvas
利用html2image
phantomJs

http://phantomjs.org/download.html，也可以通过（只有windows版本）：https://pan.baidu.com/s/1EVX1RPX7gY0rGvEI6OHcwg 密码：brb4 下载；解压后可以看到

var page = require(‘webpage‘).create(),     system = require(‘system‘),     address, output, size;  if (system.args.length < 3 || system.args.length > 5) {     phantom.exit(1); } else {     address = system.args[1];//传入url地址     output = system.args[2];//输出图片的地址     page.viewportSize = { width: 800, height: 1800 };//自定义定义宽高     if (system.args.length > 3 && system.args[2].substr(-4) === ".pdf") {         size = system.args[3].split(‘*‘);         page.paperSize = size.length === 2 ? { width: size[0], height: size[1], margin: ‘0px‘ }                                            : { format: system.args[3], orientation: ‘portrait‘, margin: ‘1cm‘ };     } else if (system.args.length > 3 && system.args[3].substr(-2) === "px") {         size = system.args[3].split(‘*‘);         if (size.length === 2) {             pageWidth = parseInt(size[0], 10);             pageHeight = parseInt(size[1], 10);             page.viewportSize = { width: pageWidth, height: pageHeight };             page.clipRect = { top: 0, left: 0, width: pageWidth, height: pageHeight };         } else {             console.log("size:", system.args[3]);             pageWidth = parseInt(system.args[3], 10);             pageHeight = parseInt(pageWidth * 3/4, 10); // it‘s as good an assumption as any             console.log ("pageHeight:",pageHeight);             page.viewportSize = { width: pageWidth, height: pageHeight };         }     }     if (system.args.length > 4) {         page.zoomFactor = system.args[4];     }     page.open(address, function (status) {         if (status !== ‘success‘) {             console.log(‘Unable to load the address!‘);             phantom.exit(1);         } else {             window.setTimeout(function () {                 page.render(output);                 phantom.exit();             }, 200);         }     }); }

address = system.args[1];//传入url地址

output = system.args[2];//输出图片的地址

page.viewportSize = { width: 800, height: 1800 };//自定义定义宽高

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader;  /**  * @Description:根据网页地址转换成图片  * @Author: admin  * @CreateDate: 2018年6月22日  */ public class PhantomTools {     private static String tempPath = "D:/temp/img";// 图片保存目录     private static String BLANK = " ";     // 下面内容可以在配置文件中配置     private static String binPath = "D:/tooles/phantomjs/phantomjs-2.1.1-windows/bin/phantomjs.exe";// 插件引入地址     private static String jsPath = "D:/tooles/phantomjs/phantomjs-2.1.1-windows/examples/rasterize.js";// js引入地址      // 执行cmd命令     public static String cmd(String imgagePath, String url) {         return binPath + BLANK + jsPath + BLANK + url + BLANK + imgagePath;     }     //关闭命令     public static void close(Process process, BufferedReader bufferedReader) throws IOException {         if (bufferedReader != null) {             bufferedReader.close();         }         if (process != null) {             process.destroy();             process = null;         }     }     /**      * @param userId       * @param url      * @throws IOException       */     public static void printUrlScreen2jpg(String url) throws IOException{         String imgagePath = tempPath+"/"+System.currentTimeMillis()+".png";//图片路径         //Java中使用Runtime和Process类运行外部程序         Process process = Runtime.getRuntime().exec(cmd(imgagePath,url));         InputStream inputStream = process.getInputStream();         BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));         String tmp = "";         while ((tmp = reader.readLine()) != null) {             close(process,reader);         }         System.out.println("success");     }          public static void main(String[] args) throws IOException {         String url = "https://www.baidu.com/";//以百度网站首页为例         PhantomTools.printUrlScreen2jpg(url);     } }

截图效果，宽度和高度可以根据自己的需求在js里面调整

原文：https://www.cnblogs.com/han108/p/9216583.html

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