Android学习（49） -- 使用get方式提交数据

来源：互联网发布：web项目怎么管理网络编辑：程序博客网时间：2024/06/18 11:29

get方式提交的数据是直接拼接在url的末尾

final String path = "http://192.168.1.103/Web/servlet/CheckLogin?name=" + name + "&pass=" + pass;

发送get请求，代码和之前一样

URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");conn.setReadTimeout(5000);conn.setConnectTimeout(5000);if(conn.getResponseCode() == 200){}

浏览器在发送请求携带数据时会对数据进行URL编码，我们写代码时也需要为中文进行URL编码

URLEncoder.encode(name)，过时了，编码是utf-8，这个比较方便，

URLEncoder.encode(name, “utf-8”)，这个是不过时的，如果编码不是utf-8需要使用这个。

String path = "http://192.168.1.103/Web/servlet/CheckLogin?name=" + URLEncoder.encode(name) + "&pass=" + pass;

核心代码

public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}Handler handler = new Handler(){public void handleMessage(android.os.Message msg) {Toast.makeText(MainActivity.this, (String)msg.obj, 0).show();}};public void click(View v){EditText et_name = (EditText) findViewById(R.id.et_name);EditText et_pass = (EditText) findViewById(R.id.et_pass);final String name = et_name.getText().toString();final String pass = et_pass.getText().toString();Thread t = new Thread(){@Overridepublic void run() {//提交的数据需要经过url编码，英文和数字编码后不变@SuppressWarnings("deprecation")String path = "http://192.168.13.13/Web2/servlet/LoginServlet?name=" + URLEncoder.encode(name) + "&pass=" + pass;try {URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(5000);conn.setReadTimeout(5000);if(conn.getResponseCode() == 200){InputStream is =conn.getInputStream();String text = Utils.getTextFromStream(is);Message msg = handler.obtainMessage();msg.obj = text;handler.sendMessage(msg);}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}};t.start();}}

getTextFromStream

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时，同步把数据写入数组输出流ByteArrayOutputStream bos = new ByteArrayOutputStream( );try {while((len = is.read(b)) != -1){bos.write(b, 0, len);}//把字节数组输出流里的数据转换成字节数组String text = new String(bos.toByteArray( ));return text;} catch (IOException e) {e.printStackTrace();}return null;}

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