HttpClient的get方式：
由于是网络请求，一定要放在子线程里做。
首先创建一个HttpClient对象:
HttpClient httpClient = new DefaultHttpClient();
然后创建一个HttpGet，将url地址传进去：
HttpGet httpGet = new HttpGet(path);
然后获取状态码，200的话就是访问成功了：
int code = response.getStatusLine().getStatusCode();
接下来得到响应：
HttpResponse response = httpClient.execute(httpPost);
再判断内容是否登入成功就行了。
完整的方法：
1 public static void requestNewForGetLogin(final Handler handler, final String username, final String password) {
2
3 new Thread(new Runnable() {
4
5 @Override
6 public void run() {
7 try {
8 String path = "http://192.168.0.106:8080/Starry/servlet/LoginServlet?username=" + URLEncoder.encode(username,"utf-8") + "&pwd=" + URLEncoder.encode(password,"utf-8");
9 //创建一个HttpClient对象
10 HttpClient httpClient = new DefaultHttpClient();
11 //设置请求方式
12 HttpGet httpGet = new HttpGet(path);
13 HttpResponse response = httpClient.execute(httpGet);
14 int code = response.getStatusLine().getStatusCode();
15 if(code == 200) {
16 HttpEntity entity = response.getEntity();
17 InputStream inputStream = entity.getContent();
18 String result = StreamUtils.streamToString(inputStream);
19 boolean issuccess = false;
20 if(result.contains("success")){
21 issuccess = true;
22 }
23 Message msg = Message.obtain();
24 msg.obj = issuccess;
25 msg.what = 1;
26 handler.sendMessage(msg);
27 }
28 } catch (Exception e) {
29 e.printStackTrace();
30 }
31 }
32 }).start();
33 }
HttpClient的post方式：
post方式与get有很多相似之处。不同的就是需要创建集合封装数据。
ArrayList<BasicNameValuePair> arrayList = new ArrayList<BasicNameValuePair>();
BasicNameValuePair nameValuePair = new BasicNameValuePair("username", username);
arrayList.add(nameValuePair);
BasicNameValuePair nameValuePair2 = new BasicNameValuePair("pwd", password);
arrayList.add(nameValuePair2);
完整的方法：
1 public static void requestNewForPostLogin(final Handler handler, final String username, final String password) {
2 final String path = "http://192.168.0.106:8080/Starry/servlet/LoginServlet"; // Post
3 new Thread(new Runnable() {
4
5 @Override
6 public void run() {
7 try {
8 //创建一个HttpClient对象
9 HttpClient httpClient = new DefaultHttpClient();
10 //创建一个请求方式
11 HttpPost httpPost = new HttpPost(path);
12 //创建集合封装数据
13 ArrayList<BasicNameValuePair> arrayList = new ArrayList<BasicNameValuePair>();
14 BasicNameValuePair nameValuePair = new BasicNameValuePair("username", username);
15 arrayList.add(nameValuePair);
16 BasicNameValuePair nameValuePair2 = new BasicNameValuePair("pwd", password);
17 arrayList.add(nameValuePair2);
18 //创建一个entity
19 UrlEncodedFormEntity entity = new UrlEncodedFormEntity(arrayList,"utf-8");
20 httpPost.setEntity(entity);
21 HttpResponse response = httpClient.execute(httpPost);
22 int code = response.getStatusLine().getStatusCode();
23 if(code == 200) {
24 HttpEntity entity2 = response.getEntity();
25 InputStream inputStream = entity2.getContent();
26 String result = StreamUtils.streamToString(inputStream);
27 boolean issuccess = false;
28 if(result.contains("success")){
29 issuccess = true;
30 }
31 Message msg = Message.obtain();
32 msg.obj = issuccess;
33 msg.what = 2;
34 handler.sendMessage(msg);
35 }
36
37 } catch (Exception e) {
38 e.printStackTrace();
39 }
40 }
41 }).start();
42 }
AsyncHttpClient由于已经封装好了在子线程里做，就不想自己创建子线程了。
AsyncHttpClient的get方式：
首先创建AsyncHttpClient对象：
AsyncHttpClient asyncHttpClient = new AsyncHttpClient();
然后调用asyncHttpClient里的get方法。asyncHttpClient.get(url, responseHandler)
第一个参数数地址，第二个参数可以用匿名类。
responseHandler类里有两个方法onSuccess和onFailure，分别代表成功和失败。
1 asyncHttpClient.get(path, new AsyncHttpResponseHandler() {
2
3 @Override
4 public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {
5 if(statusCode == 200) {
6 try {
7 String result = new String(responseBody,"utf-8");
8 Toast.makeText(context, result, Toast.LENGTH_SHORT).show();
9 } catch (UnsupportedEncodingException e) {
10 e.printStackTrace();
11 }
12
13 }
14 }
15
16 @Override
17 public void onFailure(int statusCode, Header[] headers,
18 byte[] responseBody, Throwable error) {
19 System.out.println(".............Failure");
20 }
21 });
完整的方法：
1 public static void requestNewForGetLogin(final Context context, final Handler handler, final String username, final String password) {
2
3 try {
4 String path = "http://192.168.0.100:8080/Starry/servlet/LoginServlet?username=" + URLEncoder.encode(username,"utf-8") + "&pwd=" + URLEncoder.encode(password,"utf-8");
5 //创建一个AsyncHttpClient对象
6 System.out.println(path);
7 AsyncHttpClient asyncHttpClient = new AsyncHttpClient();
8 asyncHttpClient.get(path, new AsyncHttpResponseHandler() {
9
10 @Override
11 public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {
12 if(statusCode == 200) {
13 try {
14 String result = new String(responseBody,"utf-8");
15 Toast.makeText(context, result, Toast.LENGTH_SHORT).show();
16 } catch (UnsupportedEncodingException e) {
17 e.printStackTrace();
18 }
19
20 }
21 }
22
23 @Override
24 public void onFailure(int statusCode, Header[] headers,
25 byte[] responseBody, Throwable error) {
26 System.out.println(".............Failure");
27 }
28 });
29 } catch (Exception e) {
30 e.printStackTrace();
31 }
32 }
AsyncHttpClient的post方式：
与get相似，只需要传参数进去，用RequestParams类传参数
RequestParams params = new RequestParams();
params.put("username", username);
params.put("pwd", password);
完整的方法：
1 public static void requestNewForPostLogin(final Context context, final Handler handler, final String username, final String password) {
2 final String path = "http://192.168.0.100:8080/Starry/servlet/LoginServlet"; // Post
3 AsyncHttpClient asyncHttpClient = new AsyncHttpClient();
4
5 RequestParams params = new RequestParams();
6 params.put("username", username);
7 params.put("pwd", password);
8 asyncHttpClient.post(path, params, new AsyncHttpResponseHandler() {
9
10 @Override
11 public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {
12 if(statusCode == 200) {
13 try {
14 String result = new String(responseBody,"utf-8");
15 Toast.makeText(context, result, Toast.LENGTH_SHORT).show();
16 } catch (UnsupportedEncodingException e) {
17 e.printStackTrace();
18 }
19
20 }
21 }
22
23 @Override
24 public void onFailure(int statusCode, Header[] headers,
25 byte[] responseBody, Throwable error) {
26 System.out.println(".............Failure");
27 }
28 });
29 }
时间： 2024-10-05 00:25:52