Android|在android中使用HTTPClient以post方法发送二进制文件
首先，在propotities-> Java build path -> Libraries中add external jars中引入httpclient-4.2.5.jar和httpmime-4.2.5.jar
然后再将这两个包拷贝到项目工程下的libs目录下；
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.params.HttpClientParams;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.ByteArrayBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;
/**
* HTTP请求辅助类，用于人脸识别过程中向face++发送请求
* @author witness
*
*/public class HTTPUtils { private static HttpParams httpParams = new BasicHttpParams();
private static HttpClient httpClient = getHttpClient();
public static String doGet(String url, Map params){
String paramStr = "";
Iterator iter = params.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
Object key = entry.getKey();
Object val = entry.getValue();
paramStr += paramStr = "&" + key + "=" + val;
}
//if (!paramStr.equals("")) {
//paramStr = paramStr.replaceFirst("&", "?");
//url += paramStr;
//}
HttpGet httpRequest = new HttpGet(url);
String strResult = "doGetError";
try {
/* 发送请求并等待响应 */
HttpResponse httpResponse = httpClient.execute(httpRequest);
/* 若状态码为200 ok */
if (httpResponse.getStatusLine().getStatusCode() == 200) {
/* 读返回数据 */
strResult = EntityUtils.toString(httpResponse.getEntity());
} else {
strResult = "Error Response: "
+ httpResponse.getStatusLine().toString();
}
} catch (ClientProtocolException e) {
strResult = e.getMessage().toString();
e.printStackTrace();
} catch (IOException e) {
strResult = e.getMessage().toString();
e.printStackTrace();
} catch (Exception e) {
strResult = e.getMessage().toString();
e.printStackTrace();
}
Log.v("strResult", strResult);
return strResult;
}
@SuppressWarnings("deprecation")
public static String doPost(String url, byte[] imgData) {
/* 建立HTTPPost对象 */
HttpPost httpRequest = new HttpPost(url);
String strResult = "doPostError";
try {
MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
/* 添加请求参数到请求对象 */
ByteArrayBody img = new ByteArrayBody(imgData, "img");
StringBody key = new StringBody(Constants.API_KEY);
StringBody secret = new StringBody(Constants.API_SECRET);
entity.addPart("img", img);
entity.addPart("api_key", key);
entity.addPart("api_secret", secret);
httpRequest.setEntity(entity);
/* 发送请求并等待响应 */
HttpResponse httpResponse = httpClient.execute(httpRequest);
/* 若状态码为200 ok */
if (httpResponse.getStatusLine().getStatusCode() == 200) {
/* 读返回数据 */
strResult = EntityUtils.toString(httpResponse.getEntity());
} else {
strResult = "Error Response: "
+ httpResponse.getStatusLine().toString();
}
} catch (ClientProtocolException e) {
strResult = e.getMessage().toString();
e.printStackTrace();
} catch (IOException e) {
strResult = e.getMessage().toString();
e.printStackTrace();
} catch (Exception e) {
strResult = e.getMessage().toString();
e.printStackTrace();
}
Log.v("strResult", strResult);
return strResult;
}
private static HttpClient getHttpClient() {
// 设置连接超时和 Socket 超时，以及 Socket 缓存大小
HttpConnectionParams.setConnectionTimeout(httpParams, 20 * 1000);
HttpConnectionParams.setSoTimeout(httpParams, 20 * 1000);
HttpConnectionParams.setSocketBufferSize(httpParams, 8192);
// 设置重定向，缺省为 true
HttpClientParams.setRedirecting(httpParams, true);
// 设置 user agent
String userAgent = "Mozilla/5.0 (Windows;
U;
Windows NT 5.1;
zh-CN;
rv:1.9.2) Gecko/20100115 Firefox/3.6";
HttpProtocolParams.setUserAgent(httpParams, userAgent);
// 创建一个 HttpClient 实例
// 注意 HttpClient httpClient = new HttpClient();
是Commons HttpClient
// 中的用法，在 Android 1.5 中我们需要使用 Apache 的缺省实现 DefaultHttpClient
httpClient = new DefaultHttpClient(httpParams);
return httpClient;
}
public static byte[] getBitmapByte(Bitmap bitmap){
ByteArrayOutputStream out = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
try {
out.flush();
out.close();
} catch (IOException e) {
e.printStackTrace();
}
return out.toByteArray();
} public static Bitmap getBitmapFromByte(byte[] temp){
if(temp != null){
Bitmap bitmap = BitmapFactory.decodeByteArray(temp, 0, temp.length);
return bitmap;
}else{
return null;
}
}
}【Android|在android中使用HTTPClient以post方法发送二进制文件】
