Java如何通过URL获取公众号文章生成HTML

这篇文章主要介绍Java如何通过URL获取公众号文章生成HTML，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

说明：通过公众号URL获取的内容，文字可以正常显示，但是图片存在跨域访问的问题，微信不允许跨域访问公众号图片，所以需要将公众号图片从存入本地后，再上传至OSS，然后把HTML中的图片全部替换为自己的OSS地址就可以了

这里就需要在后台对HTML进行DOM的解析，需要用的Jsoup

com.aliyun.oss aliyun-sdk-oss 2.2.3 org.jsoup jsoup 1.9.2

controller

package com.iueang.controller; import java.io.File;import java.util.HashMap;import java.util.Map; import org.jsoup.Jsoup;import org.jsoup.nodes.Document;import org.jsoup.nodes.Element;import org.jsoup.select.Elements;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody; import com.iueang.util.DownLoadImg;import com.iueang.util.GetBody;import com.iueang.util.OssUtil2;import com.iueang.util.UrlUtil;@Controllerpublic class TestUrl { @RequestMapping("tohtml") public String tohtml() { return "html/index.html"; } @RequestMapping("getHtml") @ResponseBody public Map getHtml(String url){ //获取url文章生成文本 String html = UrlUtil.getAccess(url); String reg = "(.*?)"; String head=GetBody.getSubUtilSimple(html, reg); String HTTPHOST="http://yueang2.oss-cn-qingdao.aliyuncs.com/testimg/"; String newsBody=head; Document doc = Jsoup.parse(newsBody); Elements pngs = doc.select("img[data-src]"); System.out.println(pngs); for (Element element : pngs) { //获取图片地址 String imgUrl = element.attr("data-src"); //下载图片到本地 String filename=DownLoadImg.downloadPicture(imgUrl); File file =new File("D:\\m2\\"+filename); //上传至oss Boolean flag = OssUtil2.uploadFileToOss(file, "testimg/"+filename); if(flag) { file.delete(); } String newsrc =HTTPHOST + filename; element.attr("src", newsrc); } newsBody = doc.toString(); System.out.println(newsBody); Map map=new HashMap(); map.put("resultHtml", newsBody); return map; }}

util工具类

GetBody类

package com.iueang.util; import java.util.regex.Matcher;import java.util.regex.Pattern; public class GetBody {  public static String getSubUtilSimple(String html, String reg) {  Pattern pattern = Pattern.compile(reg);// 匹配的模式     Matcher m = pattern.matcher(html);     while(m.find()){       return m.group(1);     }     return ""; } }

OssUtil类

package com.iueang.util; import java.io.File;import java.util.HashMap;import java.util.Map; import com.aliyun.oss.OSSClient;import com.aliyun.oss.model.ObjectMetadata; public class OssUtil2 {  //以下几个参数值必填，参考文章最后文档 static String endpoint = "http://oss-cn-qingdao.aliyuncs.com"; static String accessKeyId = "oss获取"; static String accessKeySecert = "oss获取"; static String bucketName = "yueang2";  /** * 上传单个文件到OSS * @param file 要上传的文件File对象 * @param objName 上传后的文件名，包含文件夹，比如 game/game/test.txt * @return */ public static boolean uploadFileToOss(File file, String objName) {   try {     OSSClient ossClient = null;     try {       ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecert);     }catch (Exception e){       e.printStackTrace();     }     ObjectMetadata meta = new ObjectMetadata();     ossClient.putObject(bucketName, objName, file, meta);     ossClient.shutdown();   } catch (Exception e) {     e.printStackTrace();     return false;   }   return true; }}

DownLoadImg类

package com.iueang.util; import java.io.ByteArrayOutputStream;import java.io.DataInputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.net.MalformedURLException;import java.net.URL;import java.util.UUID; import sun.misc.BASE64Encoder;public class DownLoadImg { public static String downloadPicture(String urlList) {  String filename="iueang"+UUID.randomUUID().toString()+".png";  String path="D:/m2/"+filename;     URL url = null;     try {       url = new URL(urlList);       DataInputStream dataInputStream = new DataInputStream(url.openStream());       FileOutputStream fileOutputStream = new FileOutputStream(new File(path));       ByteArrayOutputStream output = new ByteArrayOutputStream();        byte[] buffer = new byte[1024];       int length;        while ((length = dataInputStream.read(buffer)) > 0) {         output.write(buffer, 0, length);       }       BASE64Encoder encoder = new BASE64Encoder();       String encode = encoder.encode(buffer);       fileOutputStream.write(output.toByteArray());       dataInputStream.close();       fileOutputStream.close();     } catch (MalformedURLException e) {       e.printStackTrace();     } catch (IOException e) {       e.printStackTrace();     }     System.out.println("Download返回的filname="+filename); return filename;   }}

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