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get方式:
package com.itheima.getmethod; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.net.URLDecoder; import java.net.URLEncoder; import com.itheima.htmlviewer.utils.Utils; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.app.Activity; import android.view.Menu; import android.view.View; import android.widget.EditText; import android.widget.Toast; public class MainActivity extends Activity { @Override protected 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(){ @Override public void run() { //提交的数据需要经过url编码(utf-8编码),英文和数字编码后不变,如果是浏览器会自动编码,客户端要手动编码 @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 block e.printStackTrace(); } } }; t.start(); } }
package com.itheima.htmlviewer.utils; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; 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) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } }
windowsmore编码是gbk,安卓默认编码是utf-8.
post方式:
package com.itheima.getmethod; import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.net.URLDecoder; import java.net.URLEncoder; import com.itheima.htmlviewer.utils.Utils; import com.itheima.postmethod.R; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.app.Activity; import android.view.Menu; import android.view.View; import android.widget.EditText; import android.widget.Toast; public class MainActivity extends Activity { @Override protected 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(){ @Override public 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"; try { URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("POST"); conn.setConnectTimeout(5000); conn.setReadTimeout(5000); //拼接出要提交的数据的字符串 String data = "name=" + URLEncoder.encode(name) + "&pass=" + pass; //添加post请求的两行属性 conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); conn.setRequestProperty("Content-Length", data.length() + ""); //设置打开输出流 conn.setDoOutput(true); //拿到客户端像服务端的输出流 OutputStream os = conn.getOutputStream(); //使用输出流往服务器提交数据, os.write(data.getBytes());//这个时候还没有产生网络交互数据 if(conn.getResponseCode() == 200){//建立连接,产生网络交互数据 InputStream is = conn.getInputStream();//得到服务器返回的输入流 String text = Utils.getTextFromStream(is); Message msg = handler.obtainMessage(); msg.obj = text; handler.sendMessage(msg); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } }; t.start(); } }
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原文地址:http://www.cnblogs.com/yaowen/p/4932049.html