Android使用HttpURLConnection和HttpClient请求服务器数据
16lz
2021-01-23
HTTP提交方式有多种，最常用的的就是POST和GET，另外还有PUT、DELETE、HEAD。好久没学习了，Android这边又生疏了，近三个月来毫无建树，整天都忙也没学到什么东西，打算继续学习Android！
1.0 HttpURLConnection
1.1 HttpURLConnection:GET
public boolean loginByGet(String path, String username , String password) throws Exception{ String url_path = path +"?username=" + URLEncoder.encode(username, "utf-8") + "&password="+password; URL url = new URL(url_path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); conn.setConnectTimeout(5000); if(conn.getResponseCode() == 200){ return true; } return false; } 1.2 HttpURLConnection:POST
public boolean loginByPost(String path,String username , String password) throws Exception{ System.out.println("LoginService的loginByPost()"); URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("POST"); conn.setConnectTimeout(5000); String value = "username=" + username +"&" + "password=" +password; byte[] entity = value.getBytes(); conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); conn.setRequestProperty("Content-Length", entity.length + ""); conn.setDoOutput(true); OutputStream os = conn.getOutputStream(); os.write(entity); if(conn.getResponseCode() == 200){ return true; } return false; } 2.0 HttpClient
2.1 HttpClient:GET
public boolean loginByHttpClientGet(String path,String username , String password) throws Exception{ String value = path + "?username=" + username +"&password=" + password; HttpClient httpClient = new DefaultHttpClient(); HttpGet httpGet = new HttpGet(value); HttpResponse httpResponse = httpClient.execute(httpGet); if(httpResponse.getStatusLine().getStatusCode() == 200){ return true; } return false; } 2.2 HttpClient:POST
public boolean loginByHttpClientPost(String path,String username , String password)throws Exception{ HttpClient httpClient = new DefaultHttpClient(); HttpPost httpPost = new HttpPost(path); List<NameValuePair> parameters = new ArrayList<NameValuePair>(); parameters.add(new BasicNameValuePair("username", username)); parameters.add(new BasicNameValuePair("password", password)); UrlEncodedFormEntity entity = new UrlEncodedFormEntity(parameters,"utf-8"); httpPost.setEntity(entity); HttpResponse httpResponse = httpClient.execute(httpPost); if(httpResponse.getStatusLine().getStatusCode() == 200){ return true; } return false; } 更多相关文章
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