1.直接上效果图
2.代码
主要就是工具类HtmlService.java:
import java.io.ByteArrayOutputStream;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;/** * 获取HTML数据 * * @author David * */public class HtmlService { public static String getHtml(String path) throws Exception { // 通过网络地址创建URL对象 URL url = new URL(path); // 根据URL // 打开连接,URL.openConnection函数会根据URL的类型,返回不同的URLConnection子类的对象,这里URL是一个http,因此实际返回的是HttpURLConnection HttpURLConnection conn = (HttpURLConnection) url.openConnection(); // 设定URL的请求类别,有POST、GET 两类 conn.setRequestMethod("GET"); //设置从主机读取数据超时(单位:毫秒) conn.setConnectTimeout(5000); //设置连接主机超时(单位:毫秒) conn.setReadTimeout(5000); // 通过打开的连接读取的输入流,获取html数据 InputStream inStream = conn.getInputStream(); // 得到html的二进制数据 byte[] data = readInputStream(inStream); // 是用指定的字符集解码指定的字节数组构造一个新的字符串 String html = new String(data, "utf-8"); return html; } /** * 读取输入流,得到html的二进制数据 * * @param inStream * @return * @throws Exception */ public static byte[] readInputStream(InputStream inStream) throws Exception { ByteArrayOutputStream outStream = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; int len = 0; while ((len = inStream.read(buffer)) != -1) { outStream.write(buffer, 0, len); } inStream.close(); return outStream.toByteArray(); }}
MainActivity.java 修改如下:
public class MainActivity extends Activity { private String path = "http://www.cnblogs.com/yc-755909659/"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); TextView textView = (TextView)this.findViewById(R.id.textView); try { String htmlContent = HtmlService.getHtml(path); textView.setText(htmlContent); } catch (Exception e) { textView.setText("程序出现异常:"+e.toString()); } }}
activity_main.xml 很简单,还是放上来吧
最后,记得添加网络访问权限哦
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