本文仅供技术交流。
在前面的文章中：基于java后端的 krpano 功能化 已经实现在win平台将krpano功能化，这次我将krpano迁移至服务器：ubuntu 16.04 server。
以win的经验为基础，这里只需解决2个问题：
linux上krpano的安装与注册
在linux上，用java执行krpano命令
（1）linux上krpano的安装与注册
我以krpano-1.19-pr10为例，不必无官网下载，在这里下： http://pan.baidu.com/s/1bppkEbd 上传到服务器解压就可以了（里面有注册码）。可是，在生成全景图时，会有水印，怎么解决呢？在解压的文件夹里，有个叫Serial.txt文件，是一个注册码。只需要在服务器注册这个注册码就行了，每个用户都注册一遍。
我先把krpano-1.19-pr10上传到/opt目录下，unrar 解压，然后执行krpanotools register命令注册机器：
root@S189919:/opt/krpano-1.19-pr10Code registered.root@S189919:/opt/krpano-1.19-pr10exitwen@S189919:~$ cd /opt/krpano-1.19-pr10/wen@S189919:/opt/krpano-1.19-pr10$ /opt/krpano-1.19-pr10/krpanotools register FXsqTqaGNSZER5dSETEm+VzQEh9sWSa5DZMFsSmMxYV9GcXs8W3R8A/mWXrGNUceXvrihmh28hfRF1ivrW0HMzEychPvNiD8B/4/ZzDaUE9Rh6Ig22aKJGDbja1/kYIqmc/VKfItRE2RTSOIbIroxOtsz626NIpxWksAAifwhpNwuPXqDQpz2sRUMBzoPqZktpkItoSenN2mKd8Klfx7pOuB6CIK3e1CDXgyndqOt2mWybLZcU/wfJVAecfxk15ghiqrzaDsbqrdABDowg==Code registered.
这样，就会在用户的~/下生成一个.krpanolicense文件
有了krpanolicense，就不用担心会有水印和版权信息了。
（2）在linux上，用java执行krpano命令
因为java本身是跨平台的第一语言，所以选择java，就等于成功了一半。但在linux上，用java的runtime.exec与在win上的调用命令不同，文件路径也不同，这是最需要注意的！
以/opt/test/test.jpg的图片为例
krpano在linux执行的命令是：
/opt/krpano-1.19-pr10/krpanotools makepano -config=templates/vtour-normal.config /opt/test/test.jpg
而win是：
cmd /c start f:\\krpano\\krpano-1.19-pr10-postable\\krpanotools32.exe makepano -config=\\templates\\vtour-normal.config f:\\test\\test.jpg
linux的文件目录是”/ “，win是”\\”。
这是完整的krpano工具类：CmdBat
package com.xforce.krpano.util;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.parsers.ParserConfigurationException;import javax.xml.transform.OutputKeys;import javax.xml.transform.Transformer;import javax.xml.transform.TransformerException;import javax.xml.transform.TransformerFactory;import javax.xml.transform.dom.DOMSource;import javax.xml.transform.stream.StreamResult;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.Node;import org.w3c.dom.NodeList;import org.xml.sax.SAXException;public class CmdBat { public static void setKrpano(final String dpath, final String file,final String temppath, final String[] fn1, final String[] fn2, final String title,final String music) throws InterruptedException { String path = temppath + file; File targetFile = new File(path); if(!targetFile.exists()){ targetFile.mkdirs(); } String ex = "/opt/krpano-1.19-pr10/krpanotools makepano -config=templates/vtour-normal.config " + path + "/*.jpg"; Runtime runtime = Runtime.getRuntime(); String[] cmd = new String[]{"/bin/sh","-c", ex }; boolean b = true; Process p = null; try { p = runtime.exec(cmd); } catch (Exception e) { b = false; } if (b) { final InputStream is1 = p.getInputStream(); final InputStream is2 = p.getErrorStream(); new Thread() { public void run() { BufferedReader br1 = new BufferedReader( new InputStreamReader(is1)); try { String line1 = null; while ((line1 = br1.readLine()) != null) { if (line1 != null) { System.out.println("=AA==========line1======" + line1); } } } catch (IOException e) { e.printStackTrace(); } finally { try { is1.close(); File f = new File(dpath + "/" + file); f.mkdirs(); boolean b1 = copyFile(temppath + file + "/vtour/tour.js", dpath + "/" + file + "/tour.js"); if (b1) { boolean b2 = copyFile(temppath + file + "/vtour/tour.swf", dpath + "/" + file + "/tour.swf"); if (b2) { boolean b3 = copyFile(temppath + file + "/vtour/tour.xml", dpath + "/" + file + "/tour.xml"); if (b3) { boolean b4 = copyFolder( temppath + file + "/vtour/panos", dpath + "/" + file + "/panos"); if (b4) { delFolder(temppath + file); String xmlPath = dpath + "/" + file + "/tour.xml"; File xmlFile = new File(xmlPath); DocumentBuilderFactory dbFactory = DocumentBuilderFactory .newInstance(); DocumentBuilder dBuilder; try { dBuilder = dbFactory .newDocumentBuilder(); Document doc = dBuilder .parse(xmlFile); doc.getDocumentElement() .normalize(); for (int i = 0; i < fn1.length; i++) { updateAttributeValue(doc, fn1[i], fn2[i]); } updateElementValue(doc, title); deleteElement(doc); addElement(doc); updateAttributeColorValue(doc, "0x000000"); addMusicElement(doc,music); doc.getDocumentElement() .normalize(); TransformerFactory transformerFactory = TransformerFactory .newInstance(); Transformer transformer = transformerFactory .newTransformer(); DOMSource source = new DOMSource( doc); StreamResult result = new StreamResult( new File(xmlPath)); transformer.setOutputProperty( OutputKeys.INDENT, "yes"); transformer.transform(source, result); } catch (Exception e1) { e1.printStackTrace(); } } } } } } catch (IOException e) { e.printStackTrace(); } } } }.start(); new Thread() { public void run() { BufferedReader br2 = new BufferedReader( new InputStreamReader(is2)); try { String line2 = null; while ((line2 = br2.readLine()) != null) { if (line2 != null) { System.out.println("=AA==========line2======" + line2); } } } catch (IOException e) { e.printStackTrace(); } finally { try { is2.close(); } catch (IOException e) { e.printStackTrace(); } } } }.start(); p.waitFor(); p.destroy(); } else { System.out.println("上传失败"); } } /** * 复制单个文件 * * @param oldPath * String 原文件路径 如：c:/fqf.txt * @param newPath * String 复制后路径 如：f:/fqf.txt * @return boolean */ public static boolean copyFile(String oldPath, String newPath) { try { int bytesum = 0; int byteread = 0; File oldfile = new File(oldPath); if (oldfile.exists()) { InputStream inStream = new FileInputStream(oldPath); FileOutputStream fs = new FileOutputStream(newPath); byte[] buffer = new byte[1444]; int length; while ((byteread = inStream.read(buffer)) != -1) { bytesum += byteread; fs.write(buffer, 0, byteread); } inStream.close(); } } catch (Exception e) { e.printStackTrace(); return false; } return true; } /** * 复制整个文件夹内容 * * @param oldPath * String 原文件路径 如：c:/fqf * @param newPath * String 复制后路径 如：f:/fqf/ff * @return boolean */ public static boolean copyFolder(String oldPath, String newPath) { try { (new File(newPath)).mkdirs(); File a = new File(oldPath); String[] file = a.list(); File temp = null; for (int i = 0; i < file.length; i++) { if (oldPath.endsWith(File.separator)) { temp = new File(oldPath + file[i]); } else { temp = new File(oldPath + File.separator + file[i]); } if (temp.isFile()) { FileInputStream input = new FileInputStream(temp); FileOutputStream output = new FileOutputStream(newPath + "/" + (temp.getName()).toString()); byte[] b = new byte[1024 * 5]; int len; while ((len = input.read(b)) != -1) { output.write(b, 0, len); } output.flush(); output.close(); input.close(); } if (temp.isDirectory()) { copyFolder(oldPath + "/" + file[i], newPath + "/" + file[i]); } } } catch (Exception e) { e.printStackTrace(); return false; } return true; } public static void delFolder(String folderPath) { try { delAllFile(folderPath); String filePath = folderPath; filePath = filePath.toString(); java.io.File myFilePath = new java.io.File(filePath); myFilePath.delete(); } catch (Exception e) { e.printStackTrace(); } } public static boolean delAllFile(String path) { boolean flag = false; File file = new File(path); if (!file.exists()) { return flag; } if (!file.isDirectory()) { return flag; } String[] tempList = file.list(); File temp = null; for (int i = 0; i < tempList.length; i++) { if (path.endsWith(File.separator)) { temp = new File(path + tempList[i]); } else { temp = new File(path + File.separator + tempList[i]); } if (temp.isFile()) { temp.delete(); } if (temp.isDirectory()) { delAllFile(path + "/" + tempList[i]); delFolder(path + "/" + tempList[i]); flag = true; } } return flag; } private static void addElement(Document doc) { NodeList employees = doc.getElementsByTagName("krpano"); Element emp = null; for (int i = 0; i < employees.getLength(); i++) { emp = (Element) employees.item(i); Element vtourskin = doc.createElement("include"); vtourskin.setAttribute("url", "../skin/vtourskin.xml"); emp.appendChild(vtourskin); Element skinselect = doc.createElement("include"); skinselect.setAttribute("url", "../skinselect.xml"); emp.appendChild(skinselect); } } private static void addMusicElement(Document doc,String music) { NodeList employees = doc.getElementsByTagName("krpano"); Element emp = null; for (int i = 0; i < employees.getLength(); i++) { emp = (Element) employees.item(i); Element musicEl = doc.createElement("action"); musicEl.setAttribute("name", "bgsnd_action"); musicEl.setAttribute("autorun", "onstart"); musicEl.appendChild(doc.createTextNode("playsound(bgsnd, '"+music+"', 0);")); emp.appendChild(musicEl); } } private static void deleteElement(Document doc) { NodeList employees = doc.getElementsByTagName("krpano"); Element emp = null; for (int i = 0; i < employees.getLength(); i++) { emp = (Element) employees.item(i); Node genderNode = emp.getElementsByTagName("include").item(0); emp.removeChild(genderNode); } } private static void updateElementValue(Document doc, String title) { NodeList employees = doc.getElementsByTagName("krpano"); Element emp = null; for (int i = 0; i < employees.getLength(); i++) { emp = (Element) employees.item(i); emp.setAttribute("title", title); } } private static void updateAttributeValue(Document doc, String oldname, String newname) { NodeList employees = doc.getElementsByTagName("scene"); Element emp = null; for (int i = 0; i < employees.getLength(); i++) { emp = (Element) employees.item(i); if (emp.getAttribute("title").equals(oldname)) { emp.setAttribute("title", newname); break; } } } private static void updateAttributeColorValue(Document doc, String newname) { NodeList employees = doc.getElementsByTagName("skin_settings"); Element emp = null; for (int i = 0; i < employees.getLength(); i++) { emp = (Element) employees.item(i); emp.setAttribute("design_bgcolor", newname); emp.setAttribute("design_bgalpha", "0.8"); } }}
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至于如何调用CmdBat类，看具体的业务需求，我是先把全景图从前台传输到后台，存在uploadtemp目录中，再调用krpano处理全景图，在uploadtemp目录中生成一个图片id的文件夹，里面放vtour，然后把vtour里面的panos、tour.js、tour.xml、tour.swf 复制到tomcat统一存放全景目录vshow中，最后再把uploadtemp删除，页面只需要去vshow中根据图片id就可以访问到每个全景文件。跟在win上的一模一样。仔细研究CmdBat类，看懂了基本就可以用了，调用时很容易的。如果对java的io不太熟悉，看的吃力，多补补基础。
vshow：
图片id文件夹内部：
jsp页面，把title、图片id（uploadId ）从后台传过来即可：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8" isELIgnored="false"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE html><html><head><base href="<%=basePath%>"> <title>${title }</title> <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0" /> <meta name="apple-mobile-web-app-capable" content="yes" /> <meta name="apple-mobile-web-app-status-bar-style" content="black" /> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <meta http-equiv="x-ua-compatible" content="IE=edge" /> <style> @-ms-viewport { width:device-width; } @media only screen and (min-device-width:800px) { html { overflow:hidden; } } html { height:100%; } body { height:100%; overflow:hidden; margin:0; padding:0; font-family:Arial, Helvetica, sans-serif; font-size:16px; color:#FFFFFF; background-color:#000000; } </style></head><body><div style="position: absolute;z-index: 1;margin-top: 10px;margin-left: 10px"></div><script src="http://serverIp:8080/K/vshow/tour.js"></script><div id="pano" style="width:100%;height:100%;"> <noscript><table style="width:100%;height:100%;"><tr style="vertical-align:middle;"><td><div style="text-align:center;">ERROR:<br/><br/>Javascript not activated<br/><br/></div></td></tr></table></noscript> <script> var uploadId = "${uploadId}"; embedpano({swf:"http://serverIp:8080/K/vshow/tour.swf", xml:"http://serverIp:8080/K/vshow/${uploadId }/tour.xml", target:"pano", html5:"prefer", mobilescale:1.0, passQueryParameters:true}); </script></div></body></html>
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看看最终自豪的效果：
后记：用服务器处理全景图是不现实的，只能做做开发，测试用，因为当并发量达到上k时，服务器必定hold不住，最理想的方法是让客户端（安卓、Ios）去切割全景图，把panos文件夹统一上传到第三方存储器或者业务服务器，业务服务器的功能应该是利用krpano去展示效果而已，而且krpano的版权，切割全景图也就没用了。现在切割符合krpano展示的全景图算法还在研究中，不久便可以投入使用！
转转自 http://blog.csdn.net/change_on/article/details/77879243
