android的HttpClient實現簡單的get和post請求```Java
/* * Http工具類 / public class HttpUtil { // 創建HttpClient對象 public static HttpClient httpClient = new DefaultHttpClient(); public static final String BASE_URL = "";
/**
* get請求
*
* @param url
* 發送請求的URL
* @return 服務器響應字符串
* @throws Exception
*/
public static String doGet(String url) throws Exception {
// 創建HttpGet對象。
HttpGet get = new HttpGet(url);
// 發送GET請求
HttpResponse httpResponse = httpClient.execute(get);
// 如果服務器成功地返回響應
if (httpResponse.getStatusLine().getStatusCode() == 200) {
// 獲取服務器響應字符串
HttpEntity entity = httpResponse.getEntity();
InputStream content = entity.getContent();
return convertStreamToString(content);
}
return null;
}
/**
* post請求
*
* @param url
* 發送請求的URL
* @param params
* 請求參數
* @return 服務器響應字符串
* @throws Exception
*/
public static String doPost(String url, Map<String, String> rawParams)
throws Exception {
// 創建HttpPost對象。
HttpPost post = new HttpPost(url);
// 如果傳遞參數個數比較多的話可以對傳遞的參數進行封裝
List<NameValuePair> params = new ArrayList<NameValuePair>();
for (String key : rawParams.keySet()) {
// 封裝請求參數
params.add(new BasicNameValuePair(key, rawParams.get(key)));
}
// 設置請求參數
post.setEntity(new UrlEncodedFormEntity(params, "utf-8"));
// 發送POST請求
HttpResponse httpResponse = httpClient.execute(post);
// 如果服務器成功地返回響應
if (httpResponse.getStatusLine().getStatusCode() == 200) {
// 獲取服務器響應字符串
HttpEntity entity = httpResponse.getEntity();
InputStream content = entity.getContent();
return convertStreamToString(content);
}
return null;
}
/**
* 獲取服務器的響應,轉換為字符串
*/
private static String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
}
```
Tags: 請求 String 響應 public Exception 字符串
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