Android客户端通过GET和POST向服务器发送数据

在进行开发之前，需要先了解HTTP协议及网络编程方面的知识。

Android

1.业务层类，通过使用android内置HttpClient发送GET、POST请求

/** * 通过HttpClient发送Post请求 * @param path 请求路径 * @param params 请求参数 * @param ecoding 请求编码 * @return 请求是否成功 */private static boolean sendHttpClientPOSTRequest(String path,Map<String, String> params, String ecoding) throws Exception {List<NameValuePair> pair=new ArrayList<NameValuePair>();//存放请求参数if(params!=null && !params.isEmpty()){for (Map.Entry<String, String> entry : params.entrySet()) {pair.add(new BasicNameValuePair(entry.getKey(),entry.getValue()));}}UrlEncodedFormEntity enFormEntity=new UrlEncodedFormEntity(pair,ecoding);HttpPost httpPost=new HttpPost(path);httpPost.setEntity(enFormEntity);DefaultHttpClient client=new DefaultHttpClient();HttpResponse response=client.execute(httpPost);if(response.getStatusLine().getStatusCode()==200){return true;}return false;}/** * 通过HttpClient发送GET请求 * @param path 请求路径 * @param params 请求参数 * @param ecoding 请求编码 * @return 请求是否成功 */private static boolean sendHttpClientGETRequest(String path,Map<String, String> params, String ecoding) throws Exception {StringBuilder url=new StringBuilder(path);url.append("?");for (Map.Entry<String, String> entry : params.entrySet()) {url.append(entry.getKey()).append("=");url.append(URLEncoder.encode(entry.getValue(),ecoding));url.append("&");}url.deleteCharAt(url.length()-1);HttpGet httpGet=new HttpGet(url.toString());DefaultHttpClient client=new DefaultHttpClient();HttpResponse response=client.execute(httpGet);if(response.getStatusLine().getStatusCode()==200){//接收返回的响应结果，也可以不接收HttpEntity entity=response.getEntity();EntityUtils.toString(entity,ecoding);//对响应结果进行编码return true;}return false;}

2.通过HTTP协议手动方式进行发送GET、POST请求

/** * 发送POST请求 * @param path 请求路径 * @param params 请求参数 * @param ecoding 请求编码 * @return 请求是否成功 */private static boolean sendPOSTRequest(String path,Map<String, String> params, String ecoding) throws Exception {//title=kaka&timelength=10//组拼实体数据StringBuilder data=new StringBuilder();if(params!=null && !params.isEmpty()){for (Map.Entry<String, String> entry : params.entrySet()) {data.append(entry.getKey()).append("=");data.append(URLEncoder.encode(entry.getValue(),ecoding));data.append("&");}data.deleteCharAt(data.length()-1);}byte[] entity=data.toString().getBytes();//得到实体数据HttpURLConnection conn=(HttpURLConnection)new URL(path).openConnection();conn.setConnectTimeout(5000);conn.setRequestMethod("POST");conn.setDoOutput(true);//设置允许对外输出数据//设置头字段conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");conn.setRequestProperty("Content-Length", String.valueOf(entity.length));OutputStream outStream=conn.getOutputStream();outStream.write(entity);if(conn.getResponseCode()==200){return true;}return false;}/** * 发送GET请求 * @param path 请求路径 * @param params 请求参数 * @param ecoding 请求编码 * @return 请求是否成功 */private static boolean sendGETRequest(String path,Map<String, String> params,String ecoding) throws Exception {StringBuilder url=new StringBuilder(path);url.append("?");for (Map.Entry<String, String> entry : params.entrySet()) {url.append(entry.getKey()).append("=");url.append(URLEncoder.encode(entry.getValue(),ecoding));url.append("&");}url.deleteCharAt(url.length()-1);HttpURLConnection conn=(HttpURLConnection)new URL(url.toString()).openConnection();conn.setConnectTimeout(5000);conn.setRequestMethod("GET");if(conn.getResponseCode()==200){return true;}return false;}

3.调用示例

/** * 调用示例保存数据 * @param title 标题 * @param length 时长 * @return */public static boolean save(String title, String length) {String path="http://192.168.1.111:8080/ManageServlet";//服务器路径Map<String, String> params=new HashMap<String, String>();params.put("title", title);params.put("timelength", length);try {return sendHttpClientGETRequest(path,params,"UTF-8");} catch (Exception e) {e.printStackTrace();}return false;}

源码下载地址： Android客户端通过GET和POST向服务器发送数据源码

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