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Use Jsoup to capture page data
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- 2017-04-01 16:39:551484browse
You need to use the jsoup-1.7.3.jar package. If you need to see the document, I will download it. Please take a step to the official website
Here I will post the test of the Java project I used. Code
package com.javen.Jsoup;
import java.io.IOException;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
public class JsoupTest {
static String url="http://www.cnblogs.com/zyw-205520/archive/2012/12/20/2826402.html";
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
BolgBody();
//test();
//Blog();
/*
* Document doc = Jsoup.connect("http://www.oschina.net/")
* .data("query", "Java") // 请求参数 .userAgent("I ’ m jsoup") // 设置
* User-Agent .cookie("auth", "token") // 设置 cookie .timeout(3000) //
* 设置连接超时时间 .post();
*/// 使用 POST 方法访问 URL
/*
* // 从文件中加载 HTML 文档 File input = new File("D:/test.html"); Document doc
* = Jsoup.parse(input,"UTF-8","http://www.oschina.net/");
*/
}
/**
* 获取指定HTML 文档指定的body
* @throws IOException
*/
private static void BolgBody() throws IOException {
// 直接从字符串中输入 HTML 文档
String html = "<html><head><title> 开源中国社区 </title></head>"
+ "<body><p> 这里是 jsoup 项目的相关文章 </p></body></html>";
Document doc = Jsoup.parse(html);
System.out.println(doc.body());
// 从 URL 直接加载 HTML 文档
Document doc2 = Jsoup.connect(url).get();
String title = doc2.body().toString();
System.out.println(title);
}
/**
* 获取博客上的文章标题和链接
*/
public static void article() {
Document doc;
try {
doc = Jsoup.connect("http://www.cnblogs.com/zyw-205520/").get();
Elements ListDiv = doc.getElementsByAttributeValue("class","postTitle");
for (Element element :ListDiv) {
Elements links = element.getElementsByTag("a");
for (Element link : links) {
String linkHref = link.attr("href");
String linkText = link.text().trim();
System.out.println(linkHref);
System.out.println(linkText);
}
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* 获取指定博客文章的内容
*/
public static void Blog() {
Document doc;
try {
doc = Jsoup.connect("http://www.cnblogs.com/zyw-205520/archive/2012/12/20/2826402.html").get();
Elements ListDiv = doc.getElementsByAttributeValue("class","postBody");
for (Element element :ListDiv) {
System.out.println(element.html());
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}The following is an introduction to the use of Jsoup in android to asynchronously parse web page data. Please note: It is easy to encounter a garbled stable
configuration here. File : Add permissions to AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
Layout file
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<WebView
android:id="@+id/webView"
android:layout_width="fill_parent"
android:layout_height="200dp" />
<ScrollView
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
</ScrollView>
</LinearLayout>The code that mainly loads data asynchronously
package com.javen.aaa;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.webkit.WebView;
import android.widget.TextView;
public class MainActivity extends Activity {
private WebView webView;
private TextView textView;
private static final int DIALOG_KEY = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
webView = (WebView) findViewById(R.id.webView);
textView=(TextView) findViewById(R.id.textView);
try {
ProgressAsyncTask asyncTask=new ProgressAsyncTask(webView,textView);
asyncTask.execute(10000);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public String test() {
StringBuffer buffer=new StringBuffer();
Document doc;
try {
doc = Jsoup.connect("http://www.cnblogs.com/zyw-205520/").get();
Elements ListDiv = doc.getElementsByAttributeValue("class","postTitle");
for (Element element :ListDiv) {
Elements links = element.getElementsByTag("a");
for (Element link : links) {
String linkHref = link.attr("href");
String linkText = link.text().trim();
buffer.append("linkHref=="+linkHref);
buffer.append("linkText=="+linkText);
System.out.println(linkHref);
System.out.println(linkText);
}
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return buffer.toString();
}
// 弹出"查看"对话框
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DIALOG_KEY: {
ProgressDialog dialog = new ProgressDialog(this);
dialog.setMessage("获取数据中 请稍候...");
dialog.setIndeterminate(true);
dialog.setCancelable(true);
return dialog;
}
}
return null;
}
public static String readHtml(String myurl) {
StringBuffer sb = new StringBuffer("");
URL url;
try {
url = new URL(myurl);
BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream(), "gbk"));
String s = "";
while ((s = br.readLine()) != null) {
sb.append(s + "\r\n");
}
} catch (Exception e) {
e.printStackTrace();
}
return sb.toString();
}
class ProgressAsyncTask extends AsyncTask<Integer, Integer, String> {
private WebView webView;
private TextView textView;
public ProgressAsyncTask(WebView webView,TextView textView) {
super();
this.webView=webView;
this.textView=textView;
}
/**
* 这里的Integer参数对应AsyncTask中的第一个参数 这里的String返回值对应AsyncTask的第三个参数
* 该方法并不运行在UI线程当中，主要用于异步操作，所有在该方法中不能对UI当中的空间进行设置和修改
* 但是可以调用publish Progress方法触发onProgressUpdate对UI进行操作
*/
@Override
protected String doInBackground(Integer... params) {
String str =null;
Document doc = null;
try {
// String url ="http://www.cnblogs.com/zyw-205520/p/3355681.html";
//
// doc= Jsoup.parse(new URL(url).openStream(),"utf-8", url);
// //doc = Jsoup.parse(readHtml(url));
// //doc=Jsoup.connect(url).get();
// str=doc.body().toString();
doc = Jsoup.connect("http://www.cnblogs.com/zyw-205520/archive/2012/12/20/2826402.html").get();
Elements ListDiv = doc.getElementsByAttributeValue("class","postBody");
for (Element element :ListDiv) {
str=element.html();
System.out.println(element.html());
}
Log.d("doInBackground", str.toString());
System.out.println(str);
//你可以试试GBK或UTF-8
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return str.toString() ;
//return test();
}
/**
* 这里的String参数对应AsyncTask中的第三个参数（也就是接收doInBackground的返回值）
* 在doInBackground方法执行结束之后在运行，并且运行在UI线程当中 可以对UI空间进行设置
*/
@Override
protected void onPostExecute(String result) {
webView.loadData(result, "text/html;charset=utf-8", null);
textView.setText(result);
removeDialog(DIALOG_KEY);
}
// 该方法运行在UI线程当中,并且运行在UI线程当中 可以对UI空间进行设置
@Override
protected void onPreExecute() {
showDialog(DIALOG_KEY);
}
/**
* 这里的Intege参数对应AsyncTask中的第二个参数
* 在doInBackground方法当中，，每次调用publishProgress方法都会触发onProgressUpdate执行
* onProgressUpdate是在UI线程中执行，所有可以对UI空间进行操作
*/
@Override
protected void onProgressUpdate(Integer... values) {
}
}
} The above is Use Jsoup to capture the data content of the page. For more related content, please pay attention to the PHP Chinese website (www.php.cn)!
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