Android四种联网方式
第一HttpURLConnection 的GET请求：
public void testConnectionGet(View v) {
//1. 显示ProgressDialog
final ProgressDialog dialog = ProgressDialog.show(this, null, "正在请求中...");
//2. 启动分线程
new Thread(){
//3. 在分线程, 发送请求, 得到响应数据
public void run() {
try {
//1). 得到path, 并带上参数name=Tom1&age=11
String path = et_network_url.getText().toString()+"?name=Tom1&age=11";
//2). 创建URL对象
URL url = new URL(path);
//3). 打开连接, 得到HttpURLConnection对象
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
//4). 设置请求方式,连接超时, 读取数据超时
connection.setRequestMethod("GET");
connection.setConnectTimeout(5000);
connection.setReadTimeout(6000);
//5). 连接服务器
connection.connect();
//6). 发请求, 得到响应数据
//得到响应码, 必须是200才读取
int responseCode = connection.getResponseCode();
if(responseCode==200) {
//得到InputStream, 并读取成String
InputStream is = connection.getInputStream();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = -1;
while((len=is.read(buffer))!=-1) {
baos.write(buffer, 0, len);
}
final String result = baos.toString();
baos.close();
is.close();
//4. 在主线程, 显示得到的结果, 移除dialog
runOnUiThread(new Runnable() {
@Override
public void run() {
et_network_result.setText(result);
dialog.dismiss();
}
});
}
//7). 断开连接
connection.disconnect();
} catch (Exception e) {
e.printStackTrace();
//如果出了异常要移除dialog
dialog.dismiss();
}
}
}.start();
}public void testConnectionPost(View v) {
//1. 显示ProgressDialog
final ProgressDialog dialog = ProgressDialog.show(this, null, "正在加载中...");
//2. 启动分线程
new Thread(new Runnable() {
//3. 在分线程, 发送请求, 得到响应数据
@Override
public void run() {
try {
//1). 得到path
String path = et_network_url.getText().toString();
//2). 创建URL对象
URL url = new URL(path);
//3). 打开连接, 得到HttpURLConnection对象
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
//4). 设置请求方式,连接超时, 读取数据超时
connection.setRequestMethod("POST");
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
//5). 连接服务器
connection.connect();
//6). 发请求, 得到响应数据
//得到输出流, 写请求体:name=Tom1&age=11
OutputStream os = connection.getOutputStream();
String data = "name=Tom2&age=12";
os.write(data.getBytes("utf-8"));
//得到响应码, 必须是200才读取
int responseCode = connection.getResponseCode();
if(responseCode==200) {
//得到InputStream, 并读取成String
InputStream is = connection.getInputStream();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = -1;
while((len=is.read(buffer))!=-1) {
baos.write(buffer, 0, len);
}
final String result = baos.toString();
baos.close();
is.close();
//4. 在主线程, 显示得到的结果, 移除dialog
runOnUiThread(new Runnable() {
@Override
public void run() {
et_network_result.setText(result);
dialog.dismiss();
}
});
}
os.close();
//7). 断开连接
connection.disconnect();
} catch (Exception e) {
e.printStackTrace();
dialog.dismiss();
}
}
}).start();
}第三种 Httpclient的GET请求
public void testClientGet(View v) {
//1. 显示ProgressDialog
final ProgressDialog dialog = ProgressDialog.show(this, null, “正在请求中…”);
//2. 启动分线程
new Thread(){
//3. 在分线程, 发送请求, 得到响应数据
public void run() {
try {
//1). 得到path, 并带上参数name=Tom1&age=11
String path = et_network_url.getText().toString()+”?name=Tom3&age=13”;
//2). 创建HttpClient对象
HttpClient httpClient = new DefaultHttpClient();
//3). 设置超时
HttpParams params = httpClient.getParams();
HttpConnectionParams.setConnectionTimeout(params, 5000);
HttpConnectionParams.setSoTimeout(params, 5000);
//4). 创建请求对象
HttpGet request = new HttpGet(path);
//5). 执行请求对象, 得到响应对象
HttpResponse response = httpClient.execute(request);
int statusCode = response.getStatusLine().getStatusCode();
if(statusCode==200) {
//6). 得到响应体文本
HttpEntity entity = response.getEntity();
final String result = EntityUtils.toString(entity);
//4. 要主线程, 显示数据, 移除dialog
runOnUiThread(new Runnable() {
@Override
public void run() {
et_network_result.setText(result);
dialog.dismiss();
}
});
}
//7). 断开连接
httpClient.getConnectionManager().shutdown();
} catch (Exception e) {
e.printStackTrace();
//如果出了异常要移除dialog
dialog.dismiss();
}
}
}.start();
}public void testClientPost(View v) {
//1. 显示ProgressDialog
final ProgressDialog dialog = ProgressDialog.show(this, null, “正在请求中…”);
//2. 启动分线程
new Thread(){
//3. 在分线程, 发送请求, 得到响应数据
public void run() {
try {
//1). 得到path
String path = et_network_url.getText().toString();
//2). 创建HttpClient对象
HttpClient httpClient = new DefaultHttpClient();
//3). 设置超时
HttpParams params = httpClient.getParams();
HttpConnectionParams.setConnectionTimeout(params, 5000);
HttpConnectionParams.setSoTimeout(params, 5000);
//4). 创建请求对象
HttpPost request = new HttpPost(path);
//设置请求体
List parameters = new ArrayList();
parameters.add(new BasicNameValuePair("name", "Tom4"));
parameters.add(new BasicNameValuePair("age", "14"));
HttpEntity entity = new UrlEncodedFormEntity(parameters);
request.setEntity(entity);
//5). 执行请求对象, 得到响应对象
HttpResponse response = httpClient.execute(request);
int statusCode = response.getStatusLine().getStatusCode();
if(statusCode==200) {
//6). 得到响应体文本
entity = response.getEntity();
final String result = EntityUtils.toString(entity);
//4. 要主线程, 显示数据, 移除dialog
runOnUiThread(new Runnable() {
@Override
public void run() {
et_network_result.setText(result);
dialog.dismiss();
}
});
}
//7). 断开连接
httpClient.getConnectionManager().shutdown();
} catch (Exception e) {
e.printStackTrace();
//如果出了异常要移除dialog
dialog.dismiss();
}
}
}.start();
}