1、get
public class Tools {
public static String getTextFromStream(InputStream is){
byte[] b = new byte[1024];
int len;
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
while((len = is.read(b)) != -1){
bos.write(b, 0, len);
}
//把字节数组输出流转换成字节数组，然后用字节数组构造一个字符串
String text = new String(bos.toByteArray());
return text;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
public class MainActivity extends Activity {
Handler handler = new Handler(){
public void handleMessage(android.os.Message msg) {
Toast.makeText(MainActivity.this, (String)msg.obj, 0).show();
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
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() {
@SuppressWarnings("deprecation")//告诉编译器忽略指定的警告，不用在编译完成后出现警告信息。使用这个注释将警告信息去掉
String path = "http://169.254.244.136/Web2/servlet/Login?name=" + URLEncoder.encode(name) + //对要提交的表单数据进行url编码
"&pass=" + pass;
try {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(8000);
conn.setReadTimeout(8000);
if(conn.getResponseCode() == 200){
InputStream is = conn.getInputStream();
String text = Tools.getTextFromStream(is);
Message msg = handler.obtainMessage();
msg.obj = text;
handler.sendMessage(msg);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
t.start();
}
}
2、POST
在浏览器中显示的内容有 HTML、有 XML、有 GIF、还有 Flash ……那么，浏览器是如何区分它们，决定什么内容用什么形式来显示呢？答案是 MIME Type，也就是该资源的媒体类型。
public class MainActivity extends Activity {
Handler handler = new Handler(){
public void handleMessage(android.os.Message msg) {
Toast.makeText(MainActivity.this, (String)msg.obj, 0).show();
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
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() {
String path = "http://169.254.244.136/Web2/servlet/Login";
try {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setConnectTimeout(8000);
conn.setReadTimeout(8000);
//添加post请求头中自动添加的属性
//流里的数据的mimetype,它的作用是告诉可以处理的文件的类型，一定要编码，否则会出现乱码
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
String content = "name=" + URLEncoder.encode(name) + "&pass=" + pass;
//流里数据的长度
conn.setRequestProperty("Content-Length", content.length() + "");
//打开连接对象的输出流
conn.setDoOutput(true);
//获取连接对象的输出流
OutputStream os = conn.getOutputStream();
//把数据写入输出流中,准备把输出流发送给服务器
os.write(content.getBytes());
if(conn.getResponseCode() == 200){
InputStream is = conn.getInputStream();
String text = Tools.getTextFromStream(is);
Message msg = handler.obtainMessage();
msg.obj = text;
handler.sendMessage(msg);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
t.start();
}
}