android 上传文件
向服务器上传文件在android开发中是一件在普通不过的事了。正好现在项目中有用到就做一下总结吧。
- 1.使用HttpURLConnection，这种方法比较麻烦，需要自己模拟表单提交。
- 2.使用httpmime库实现，这种方法是建立在HttpClient基础上的。在2.3以后使用HttpURLConnection比使用HttpClient要好。
- 3.使用OKHttp库实现。
下边就依次给出实现：
一.使用HttpURLConnection 实现
/**
* 上传文件
*
* @param path
* @param fileList
*/
public static void useHttpURLConnectionUploadFile(final String path,
final ArrayList fileList) {
new Thread(new Runnable() {
@Override
public void run() {
try {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url
.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "keep-alive");
conn.setRequestProperty("Cache-Control", "max-age=0");
conn.setRequestProperty("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
conn.setRequestProperty(
"user-agent",
"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.63 Safari");
conn.setRequestProperty("Accept-Encoding",
"gzip,deflate,sdch");
conn.setRequestProperty("Accept-Language", "zh-CN,zh;q=0.8");
conn.setRequestProperty("Charsert", "UTF-8");
conn.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + STARTBOUNDARY);
OutputStream out = new DataOutputStream(conn
.getOutputStream());
StringBuffer sb = null;
for (int i = 0; i < fileList.size(); i++) {
File file = new File(fileList.get(i));
sb = new StringBuffer();
sb.append(BOUNDARY);
sb.append("Content-Disposition: form-data; name=\"file"
+ i + "\"; filename=\"" + file.getName()
+ "\"\r\n");
sb.append("Content-Type: application/octet-stream\r\n\r\n");
out.write(sb.toString().getBytes());
DataInputStream inputStream = new DataInputStream(
new FileInputStream(new File(fileList.get(i))));
int bytes = 0;
byte buffer[] = new byte[1024];
while ((bytes = inputStream.read(buffer)) != -1) {
out.write(buffer, 0, bytes);
}
out.write("\r\n".getBytes());
inputStream.close();
}
out.write(ENDBOUNDARY.getBytes());
out.flush();
out.close();
// 定义BufferedReader输入流来读取URL的响应
// 此处必须得到服务器端的输入流否则上传文件不成功（当php作服务器端语言的时候是这样，其它语言未试)
BufferedReader reader = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
System.out.println(line);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
} 二 、使用httpmime实现
/**
* 上传文件
*
* @param url
* @param files
*/
public static void useHttpMimeUploadFile(final String url,
final ArrayList files) {
new Thread(new Runnable() {
@Override
public void run() {
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
MultipartEntityBuilder build = MultipartEntityBuilder.create();
for (String file : files) {
FileBody bin = new FileBody(new File(file));
StringBody comment = null;
try {
comment = new StringBody("commit");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
build.addPart(file, bin);
build.addPart("comment", comment);
}
HttpEntity reqEntity = build.build();
httpPost.setEntity(reqEntity);
try {
HttpResponse httpResponse = httpClient.execute(httpPost);
if (httpResponse.getStatusLine().getStatusCode() == 200) {
HttpEntity resEntity = httpResponse.getEntity();
System.out.println(EntityUtils.toString(resEntity));
} else {
System.out.println("connection error!!!!");
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
httpClient.getConnectionManager().shutdown();
}
}
}).start();
} 三、使用OKHttp实现
/*
* Copyright (C) 2014 Square, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hotkeyfinance.finance.network;
import com.squareup.okhttp.MediaType;
import com.squareup.okhttp.MultipartBuilder;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.RequestBody;
import com.squareup.okhttp.Response;
import java.io.File;
import java.io.IOException;
public final class PostMultipart {
/**
* The imgur client ID for OkHttp recipes. If you're using imgur for anything
* other than running these examples, please request your own client ID!
* https://api.imgur.com/oauth2
*/
private static final String IMGUR_CLIENT_ID = "9199fdef135c122";
private static final MediaType MEDIA_TYPE_PNG = MediaType.parse("image/png");
private final OkHttpClient client = new OkHttpClient();
public void run(String url, String filePath) throws Exception {
// Use the imgur image upload API as documented at https://api.imgur.com/endpoints/image
File file = new File(filePath);
RequestBody requestBody = new MultipartBuilder()
.type(MultipartBuilder.FORM)
.addFormDataPart("title", "Square Logo")
.addFormDataPart("image", file.getName(),
RequestBody.create(MEDIA_TYPE_PNG, file))
.build();
Request request = new Request.Builder()
.header("Authorization", "Client-ID " + IMGUR_CLIENT_ID)
.url(url)
.post(requestBody)
.build();
Response response = client.newCall(request).execute();
if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);
System.out.println(response.body().string());
}
}OKHttp库的地址： https://github.com/square/okhttp
httpmine库的地址： http://mvnrepository.com/artifact/org.apache.httpcomponents/httpmime