public class MainActivity extends Activity {
private EditText et_username;
private EditText et_password;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// [1]找到我们关心的控件
et_username = (EditText) findViewById(R.id.et_username);
et_password = (EditText) findViewById(R.id.et_password);
}
// 点击按钮 进行get方式提交数据
public void click1(View v) {
new Thread(){public void run() {
try {
String name = et_username.getText().toString().trim();
String pwd = et_password.getText().toString().trim();
//[2.1]定义get方式要提交的路径 小细节 如果提交中文要对name 和 pwd 进行一个urlencode 编码
String path = "http://192.168.11.73:8080/login/LoginServlet?username="+URLEncoder.encode(name, "utf-8")+"&password="+URLEncoder.encode(pwd, "utf-8")+"";
//[3]获取httpclient实例
DefaultHttpClient client = new DefaultHttpClient();
//[3.1]准备get请求 定义 一个httpget实现
HttpGet get = new HttpGet(path);
//[3.2]执行一个get请求
HttpResponse response = client.execute(get);
//[4]获取服务器返回的状态码
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
//[5]获取服务器返回的数据 以流的形式返回
InputStream inputStream = response.getEntity().getContent();
//[6]把流转换成字符串
String content = StreamTools.readStream(inputStream);
//[7]展示结果
showToast(content);
}
} catch (Exception e) {
e.printStackTrace();
}
};}.start();
}
// [1]点击按钮 进行post方式提交数据
public void click2(View v) {
new Thread(){public void run() {
try {
//[2]获取用户名和密码
String name = et_username.getText().toString().trim();
String pwd = et_password.getText().toString().trim();
String path = "http://192.168.11.73:8080/login/LoginServlet";
//[3]以httpClient 方式进行post 提交
DefaultHttpClient client = new DefaultHttpClient();
//[3.1]准备post 请求
HttpPost post = new HttpPost(path);
//[3.1.0]准备parameters
List<NameValuePair> lists = new ArrayList<NameValuePair>();
//[3.1.1]准备 NameValuePair 实际上就是我们要提交的用户名 和密码 key是服务器key :username
BasicNameValuePair nameValuePair = new BasicNameValuePair("username",name);
BasicNameValuePair pwdValuePair = new BasicNameValuePair("password",pwd);
//[3.1.3] 把nameValuePair 和 pwdValuePair 加入到集合中
lists.add(nameValuePair);
lists.add(pwdValuePair);
//[3.1.3]准备entity
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(lists);
//[3.2]准备post方式提交的正文 以实体形式准备 (键值对形式 )
post.setEntity(entity);
HttpResponse response = client.execute(post);
//[4]获取服务器返回的状态码
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
//[5]获取服务器返回的数据 以流的形式返回
InputStream inputStream = response.getEntity().getContent();
//[6]把流转换成字符串
String content = StreamTools.readStream(inputStream);
//[7]展示结果
showToast(content);
}
} catch (Exception e) {
e.printStackTrace();
}
};}.start();
}
//封装toast方法 该toast方法执行在主线程
public void showToast(final String content){
runOnUiThread(new Runnable() {
@Override
public void run() {
//该方法一定是执行主线程
Toast.makeText(getApplicationContext(), content, 1).show();
}
});
}
}
把一个inputstream转化成一个string
public class StreamTools {
//把一个inputStream 转换成一个String
public static String readStream(InputStream in) throws Exception{
//定义一个内存输出流
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int len = -1;
byte[] buffer = new byte[1024]; //1kb
while((len=in.read(buffer))!=-1){
baos.write(buffer, 0, len);
}
in.close();
String content = new String(baos.toByteArray(),"gbk");
return content;
}
}
