文章标题

网络源码查看器

//这是工具类
public class Utils {
    public static String getTextFromStream(InputStream is) {

            byte[] b = new byte[1024];
            int len = 0;

        //创建字节数组输出流，读取输入流的文本数据，挺尸把数据写入到输出流
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
        try {
        //is.read(b)以什么单位进行读取
            while ((len = is.read(b)) != -1) {
                bos.write(b,0,len);
            }
            //把字节数组转换成字节数组
            String text = new String(bos.toByteArray());
            return text;

        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}

实现步骤

private Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            tv.setText((String)msg.obj);
        }
    };
public void click(View v){
        new Thread(){

            String text1;
            @Override
            public void run() {

                try {
                    String path = "https://www.baidu.com";
                    URL url = new URL(path);
                    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                    conn.setRequestMethod("GET");
                    conn.setReadTimeout(3000);
                    if (conn.getResponseCode()==200){
                        InputStream is = conn.getInputStream();
                        text1 = Utils.getTextFromStream(is);
                        Message msg = Message.obtain();
                        msg.obj = text1;
                        handler.sendMessage(msg);
                    }else{
                        Toast.makeText(MainActivity.this,"链接失败",Toast.LENGTH_LONG).show();
                    }

                } catch (Exception e) {
                    e.printStackTrace();
                }

            };
        }.start();
    }