這裏介紹HttpUrlConnection使用get方式或post方式和服務器進行數據交互
1.建立服務器端Web程序MyServlet
在doGet方法中調用doPost方法，在doPost方法中接收客戶端發送來的數據
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String name = request.getParameter("name");
String age = request.getParameter("age");
//response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
out.print("name ="+name+" age= "+age);
//new String(name.getBytes("iso-8859-1"),"utf-8"); 轉碼
System.out.println("name ="+name+" age= "+age);
}<body>
<form action="MyServlet" method="get">
name:<input type="text" name = "name"/><br/>
age: <input type="text" name = "age"/><br/>
<input type="submit" value="submit"/>
</form>
</body>
發送一個請求後，服務器端返回請求的數據
2.使用Android客戶端和服務器進行交互
網絡請求線程類，分別使用doGet和doPost方法請求服務器
public class HttpThread extends Thread{
String url;
String age;
String name;
public HttpThread(String url,String age,String name){
this.url = url;
this.age = age;
this.name = name;
}
private void doGet(){
//get方式請求數據是在url中拼接的
url = url+"?name="+name+"&age="+age;
// URLEncoder.encode(name,"utf-8");//轉碼，防止中文亂碼
try {
URL httpUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection) httpUrl.openConnection();
conn.setReadTimeout(3000);
conn.setRequestMethod("GET");
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String str;
StringBuffer sb = new StringBuffer();
while((str = bufferedReader.readLine())!= null){
sb.append(str);
}
Log.i("meng.li","result: "+sb.toString());
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private void doPost(){
Properties properties = System.getProperties();
properties.list(System.out);
try {
URL httpUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection) httpUrl.openConnection();
conn.setReadTimeout(3000);
conn.setRequestMethod("POST");
OutputStream out = conn.getOutputStream();
String content = "name="+name+"&age="+age;
out.write(content.getBytes());
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String str;
StringBuffer sb = new StringBuffer();
while((str = bufferedReader.readLine())!= null){
sb.append(str);
}
Log.i("meng.li","result: "+sb.toString());
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void run() {
doGet();
// doPost();
}
}public class RegisteActivity extends Activity {
private Button regist;
private EditText name;
private EditText age;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
name = (EditText)findViewById(R.id.name);
age = (EditText)findViewById(R.id.age);
regist = (Button)findViewById(R.id.submit);
regist.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String url = "http://192.168.199.126:8080/Server/MyServlet";
new HttpThread(url, age.getText().toString(), name.getText().toString()).start();
}
});
}
}