标签：void basic end str lin import doc ati and
Jsoup 是一款Java 的HTML解析器，可直接解析某个URL地址、HTML文本内容。它提供了一套非常省力的API，可通过DOM，CSS以及类似于jQuery的操作方法来取出和操作数据。
特点：
开源库jsoup-1.8.1.jar，基本用法：
1 package com.zhang.jsoupdemo; 2 3 import android.os.Environment; 4 import android.support.v7.app.AppCompatActivity; 5 import android.os.Bundle; 6 7 import org.jsoup.Jsoup; 8 import org.jsoup.nodes.Document; 9 import org.jsoup.nodes.Element; 10 import org.jsoup.safety.Whitelist; 11 import org.jsoup.select.Elements; 12 13 import java.io.File; 14 import java.io.IOException; 15 16 public class MainActivity extends AppCompatActivity { 17 18 private String html = "<html><head><title>Jsoup用法</title></head>" 19 + "<body><p><a href=‘http://baidu.com‘>这里是 jsoup 项目的相关文章</a></p></body></html>"; 20 private String url = "http://baidu.com"; 21 22 @Override 23 protected void onCreate(Bundle savedInstanceState) { 24 super.onCreate(savedInstanceState); 25 setContentView(R.layout.activity_main); 26 27 //解析html文本 28 //载入数据 29 Document doc = Jsoup.parse(html); 30 //直接获取title 31 doc.title(); 32 33 34 //解析并提取 HTML 元素 35 Elements eles = doc.getElementsByTag("a"); 36 for (Element ele : eles) { 37 String linkHref = ele.attr("href"); 38 String text = ele.text(); 39 } 40 41 //数据筛选、检索 42 Elements elements = doc.select("a[href]"); 43 Elements elements1 = doc.select("img[src$=.png]"); 44 Element element = doc.select("div.className").first(); 45 46 //修改数据 47 doc.select("div.className").attr("key", "value"); 48 doc.select("div.className").addClass("myClass");//class="myClass" 49 //清理数据 50 doc.select("img").removeAttr("onClick"); 51 //转换 52 String htmls = "";//不安全的 53 String safe = Jsoup.clean(htmls, Whitelist.basic());//安全的 54 55 56 //解析url 57 //get方式 58 try { 59 Document document = Jsoup.connect(url).get(); 60 } catch (IOException e) { 61 e.printStackTrace(); 62 } 63 //post方式 64 try { 65 Document document = Jsoup.connect(url).data("key", "value").timeout(3000).post(); 66 } catch (IOException e) { 67 e.printStackTrace(); 68 } 69 70 //解析本地html 71 File input = new File(Environment.getExternalStorageDirectory() + "/index.html"); 72 try { 73 Document document = Jsoup.parse(input,"utf-8","http://baidu.com");// ../baidu.png -> http://baidu.com/baidu.png 74 } catch (IOException e) { 75 e.printStackTrace(); 76 } 77 } 78 }
解析Html 和 Epub应用：
1 package com.zhang.jsoup; 2 3 import android.support.v7.app.AppCompatActivity; 4 import android.os.Bundle; 5 6 import org.jsoup.Jsoup; 7 import org.jsoup.nodes.Document; 8 import org.jsoup.nodes.Element; 9 import org.jsoup.select.Elements; 10 11 import java.io.IOException; 12 import java.io.InputStream; 13 14 public class MainActivity extends AppCompatActivity { 15 16 private String url = "http://mobile.csdn.net/"; 17 18 @Override 19 protected void onCreate(Bundle savedInstanceState) { 20 super.onCreate(savedInstanceState); 21 setContentView(R.layout.activity_main); 22 23 new Thread(new Runnable() { 24 @Override 25 public void run() { 26 parseHtml(); 27 parseEpub(); 28 } 29 }).start(); 30 31 } 32 33 private void parseHtml() { 34 try { 35 Document doc = Jsoup.connect(url).get(); 36 Elements eles = doc.select("div.unit"); 37 for (Element ele : eles) { 38 String title = ele.getElementsByTag("h1").first().text(); 39 String href = ele.getElementsByTag("h1").first().getElementsByTag("a").attr("href"); 40 System.out.println(title + "\n" + href); 41 } 42 } catch (IOException e) { 43 e.printStackTrace(); 44 } 45 } 46 47 private void parseEpub() { 48 try { 49 InputStream inputStream = getAssets().open("fb.ncx"); 50 int size = inputStream.available(); 51 byte[] buffer = new byte[size]; 52 inputStream.read(buffer); 53 inputStream.close(); 54 55 String epubText = new String(buffer, "UTF-8"); 56 57 Document document = Jsoup.parse(epubText); 58 String title = document.getElementsByTag("docTitle").first().text(); 59 System.out.println(title + "\n"); 60 61 Elements elements = document.getElementsByTag("navPoint"); 62 for (Element element : elements) { 63 String s = element.text(); 64 String imgHref = element.getElementsByTag("content").first().attr("src"); 65 System.out.println(s + ":" + imgHref); 66 } 67 68 69 } catch (IOException e) { 70 e.printStackTrace(); 71 } 72 } 73 }
标签：void basic end str lin import doc ati and
原文地址：http://www.cnblogs.com/changchou/p/6209584.html
