在進行開發之前，需要先了解HTTP協議及網絡編程方面的知識。
Android
1.業務層類，通過使用android內置HttpClient發送GET、POST請求
/**
* 通過HttpClient發送Post請求
* @param path 請求路徑
* @param params 請求參數
* @param ecoding 請求編碼
* @return 請求是否成功
*/
private static boolean sendHttpClientPOSTRequest(String path,
Map<String, String> params, String ecoding) throws Exception {
List<NameValuePair> pair=new ArrayList<NameValuePair>();//存放請求參數
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;
}
/**
* 通過HttpClient發送GET請求
* @param path 請求路徑
* @param params 請求參數
* @param ecoding 請求編碼
* @return 請求是否成功
*/
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){
//接收返回的響應結果，也可以不接收
HttpEntity entity=response.getEntity();
EntityUtils.toString(entity,ecoding);//對響應結果進行編碼
return true;
}
return false;
} /**
* 發送POST請求
* @param path 請求路徑
* @param params 請求參數
* @param ecoding 請求編碼
* @return 請求是否成功
*/
private static boolean sendPOSTRequest(String path,
Map<String, String> params, String ecoding) throws Exception {
//title=kaka&timelength=10
//組拼實體數據
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();//得到實體數據
HttpURLConnection conn=(HttpURLConnection)new URL(path).openConnection();
conn.setConnectTimeout(5000);
conn.setRequestMethod("POST");
conn.setDoOutput(true);//設置允許對外輸出數據
//設置頭字段
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;
}
/**
* 發送GET請求
* @param path 請求路徑
* @param params 請求參數
* @param ecoding 請求編碼
* @return 請求是否成功
*/
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;
} /**
* 調用示例保存數據
* @param title 標題
* @param length 時長
* @return
*/
public static boolean save(String title, String length) {
String path="http://192.168.1.111:8080/ManageServlet";//服務器路徑
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;
}
