Android Http协议笔记（使用HttpURLConnection）文件上传+参数
2015-07-12 13:41
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代码地址：http://download.csdn.net/detail/u013063185/8892951
1.Android网络请求数据是最常用，最近在研究Http网络请求，来记一下笔记
下面的博客是Http协议的解析，我就不重复了：
/article/1775657.html
2.下面是Http 请求的一个例子：
客户端：
GET http://www.hstc.edu.cn/turbosearch/search_new.htm HTTP/1.1
Host: www.hstc.edu.cn
Connection: keep-alive
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 UBrowser/5.1.2238.18 Safari/537.36
Referer: http://www.hstc.edu.cn/2013/
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.8
Cookie: _gscu_538514159=347153715akloz45; ASPSESSIONIDCQSDSSQS=LCEPCIJAFOEJOCKJPDPBNJME
服务器端
HTTP/1.1 200 OK
Content-Length: 397
Content-Type: text/html
Last-Modified: Wed, 09 Jan 2013 02:04:00 GMT
Accept-Ranges: bytes
ETag: "3655d97deecd1:83c0"
Server: YxlinkWAF
X-Powered-By: ASP.NET
Date: Sun, 12 Jul 2015 05:24:01 GMT
<html>
。。。
</html>
3.关于安卓HTTP请求用HttpUrlConnection还是HttpClient好/article/8432561.html
下面就进入主题，使用Android的HttpUrlConnection写网络请求，代码比较简单，直接上
Http协议的Content-Type有3种，经常使用的有multipart/form-data和application/x-www-form-urlencoded（默认），multipart/form-data方式可以上传文件，下面我增加了一个同时可以上传图片jpg和参数的方法：
代码地址：http://download.csdn.net/detail/u013063185/8892951
Fiddler.exe网络抓包工具，Android也可以使用，很强大
里面有web服务，加不多讲了，里面使用Handler进行异步封装，有兴趣可以学习交流一下。
1.Android网络请求数据是最常用，最近在研究Http网络请求，来记一下笔记
下面的博客是Http协议的解析，我就不重复了：
/article/1775657.html
2.下面是Http 请求的一个例子：
客户端：
GET http://www.hstc.edu.cn/turbosearch/search_new.htm HTTP/1.1
Host: www.hstc.edu.cn
Connection: keep-alive
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 UBrowser/5.1.2238.18 Safari/537.36
Referer: http://www.hstc.edu.cn/2013/
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.8
Cookie: _gscu_538514159=347153715akloz45; ASPSESSIONIDCQSDSSQS=LCEPCIJAFOEJOCKJPDPBNJME
服务器端
HTTP/1.1 200 OK
Content-Length: 397
Content-Type: text/html
Last-Modified: Wed, 09 Jan 2013 02:04:00 GMT
Accept-Ranges: bytes
ETag: "3655d97deecd1:83c0"
Server: YxlinkWAF
X-Powered-By: ASP.NET
Date: Sun, 12 Jul 2015 05:24:01 GMT
<html>
。。。
</html>
3.关于安卓HTTP请求用HttpUrlConnection还是HttpClient好/article/8432561.html
下面就进入主题，使用Android的HttpUrlConnection写网络请求，代码比较简单，直接上
package com.ptwyj.http;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Map;
import android.content.Context;
import android.util.Log;
import android.widget.Toast;
public class HttpUtil {
public final static String TAG = "HTTP";
private final static int CONNECT_TIME = 10000;
private final static int READ_TIME = 10000;
/**
* 发送post请求
*
* @param path
* @param map
* @param string
* @return
* @throws IOException
*/
public String doPost(String urlstr, Map<String, String> map, String encoding)
throws IOException {
StringBuilder data = new StringBuilder();
// 数据拼接 key=value&key=value
if (map != null && !map.isEmpty()) {
for (Map.Entry<String, String> entry : map.entrySet()) {
data.append(entry.getKey()).append("=");
data.append(URLEncoder.encode(entry.getValue(), encoding));
data.append("&");
}
data.deleteCharAt(data.length() - 1);
}
Log.i(TAG, data.toString());
byte[] entity = data.toString().getBytes();// 生成实体数据
URL url = new URL(urlstr);
HttpURLConnection connection = getHttpURLConnection(urlstr, "POST");
connection.setDoOutput(true);// 允许对外输出数据
connection.setRequestProperty("Content-Length",
String.valueOf(entity.length));
OutputStream outStream = connection.getOutputStream();
outStream.write(entity);
if (connection.getResponseCode() == 200) {// 成功返回处理数据
InputStream inStream = connection.getInputStream();
byte[] number = read(inStream);
String json = new String(number);
return json;
}
return null;
}
public String doPost(String urlstr) throws IOException {
return doPost(urlstr, null, "UTF-8");
}
public String doPost(String urlstr, Map<String, String> map)
throws IOException {
return doPost(urlstr, map, "UTF-8");
}
/**
* 发送GET请求
*
* @param id
* @return
* @throws IOException
* @throws Exception
*/
public String doGet(String urlstr) throws Exception {
HttpURLConnection connection = getHttpURLConnection(urlstr, "GET");
if (connection.getResponseCode() == 200) {
InputStream inStream = connection.getInputStream();
byte[] number = read(inStream);
String json = new String(number);
return json;
}
return null;
}
private HttpURLConnection getHttpURLConnection(String urlstr, String method)
throws IOException {
URL url = new URL(urlstr);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setConnectTimeout(CONNECT_TIME);
connection.setReadTimeout(READ_TIME);
connection.setRequestMethod(method);
// 头字段
connection.setRequestProperty("Accept", "*/*");
connection.setRequestProperty("Accept-Charset", "UTF-8,*;q=0.5");
connection.setRequestProperty("Accept-Encoding", "gzip,deflate");
connection.setRequestProperty("Accept-Language", "zh-CN");
connection.setRequestProperty("User-Agent", "Android WYJ");
connection.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");// 头字段
return connection;
}
/**
* 读取输入流数据 InputStream
*
* @param inStream
* @return
* @throws IOException
*/
public static byte[] read(InputStream inStream) throws IOException {
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while ((len = inStream.read(buffer)) != -1) {
outStream.write(buffer, 0, len);
}
inStream.close();
return outStream.toByteArray();
}
}Http协议的Content-Type有3种，经常使用的有multipart/form-data和application/x-www-form-urlencoded（默认），multipart/form-data方式可以上传文件，下面我增加了一个同时可以上传图片jpg和参数的方法：
/**
* 发送文件post请求
*
* @param path
* @param map
* @param string
* @return
* @throws IOException
*/
public String doFilePost(String urlstr, Map<String, String> map,
Map<String, File> files) throws IOException {
String BOUNDARY = "----WebKitFormBoundaryDwvXSRMl0TBsL6kW"; // 定义数据分隔线
URL url = new URL(urlstr);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
// 发送POST请求必须设置如下两行
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setUseCaches(false);
connection.setRequestMethod("POST");
connection.setRequestProperty("Accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent", "Android WYJ");
connection.setRequestProperty("Charsert", "UTF-8");
connection.setRequestProperty("Accept-Encoding", "gzip,deflate");
connection.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + BOUNDARY);
OutputStream out = new DataOutputStream(connection.getOutputStream());
byte[] end_data = ("--" + BOUNDARY + "--\r\n").getBytes();// 定义最后数据分隔线
// 文件
if (files != null && !files.isEmpty()) {
for (Map.Entry<String, File> entry : files.entrySet()) {
File file = entry.getValue();
String fileName = entry.getKey();
StringBuilder sb = new StringBuilder();
sb.append("--");
sb.append(BOUNDARY);
sb.append("\r\n");
sb.append("Content-Disposition: form-data;name=\"" + fileName
+ "\";filename=\"" + file.getName() + "\"\r\n");
sb.append("Content-Type: image/jpg\r\n\r\n");
byte[] data = sb.toString().getBytes();
out.write(data);
DataInputStream in = new DataInputStream(new FileInputStream(
file));
int bytes = 0;
byte[] bufferOut = new byte[1024];
while ((bytes = in.read(bufferOut)) != -1) {
out.write(bufferOut, 0, bytes);
}
out.write("\r\n".getBytes()); // 多个文件时，二个文件之间加入这个
in.close();
}
}
// 数据参数
if (map != null && !map.isEmpty()) {
for (Map.Entry<String, String> entry : map.entrySet()) {
StringBuilder sb = new StringBuilder();
sb.append("--");
sb.append(BOUNDARY);
sb.append("\r\n");
sb.append("Content-Disposition: form-data; name=\""
+ entry.getKey() + "\"");
sb.append("\r\n");
sb.append("\r\n");
sb.append(entry.getValue());
sb.append("\r\n");
byte[] data = sb.toString().getBytes();
out.write(data);
}
}
out.write(end_data);
out.flush();
out.close();
// 定义BufferedReader输入流来读取URL的响应
// BufferedReader reader = new BufferedReader(new InputStreamReader(
// connection.getInputStream()));
// String line = null;
// while ((line = reader.readLine()) != null) {
// System.out.println(line);
// }
if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
InputStream inStream = connection.getInputStream();
byte[] number = read(inStream);
String json = new String(number);
return json;
}
return null;
}代码地址：http://download.csdn.net/detail/u013063185/8892951
Fiddler.exe网络抓包工具，Android也可以使用，很强大
里面有web服务，加不多讲了，里面使用Handler进行异步封装，有兴趣可以学习交流一下。
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