Android获取网络上的网页代码

来源：互联网发布：移动网络机顶盒多少钱编辑：程序博客网时间：2024/04/30 01:28

public void showhtml(View v) {        String path = pathText.getText().toString();        try {            String html = HtmlService.getHtml(path);            textView.setText(html);        } catch (Exception e) {            e.printStackTrace();            Toast.makeText(getApplicationContext(), R.string.error, Toast.LENGTH_LONG).show();        }    }

以下是编写的HTMLService网页代码的业务类

package com.zhoujn.internet.service;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import com.wangjialin.internet.utils.StreamTool;public class HtmlService {    /**     * 获取网页源码     * @param path 网页路径     * @return     */    public static String getHtml(String path) throws Exception {        HttpURLConnection conn = (HttpURLConnection)new URL(path).openConnection();        conn.setConnectTimeout(5000);        conn.setRequestMethod("GET");        if(conn.getResponseCode() == 200){            InputStream inStream = conn.getInputStream();            byte[] data = StreamTool.read(inStream);            return new String(data);        }        return null;    }}

编写把流转化为数组的工具类：StreamTool

package com.zhoujn.internet.utils;import java.io.ByteArrayOutputStream;import java.io.InputStream;public class StreamTool {    /**     * 从流中读取数据     * @param inStream     * @return     */    public static byte[] read(InputStream inStream) throws Exception{        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();        byte[] buffer = new byte[1024];        int len = 0;        while( (len = inStream.read(buffer)) != -1){            outputStream.write(buffer, 0, len);        }        inStream.close();        return outputStream.toByteArray();    }}

注意，需要配置AndroidManifest.xml
因为要访问网络，所以需要加入网络访问权限,

<!-- 访问internet权限 --><uses-permission android:name="android.permission.INTERNET"/>

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