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<String> 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();

    }

/**
     * 上传文件
     *
     * @param url
     * @param files
     */
    public static void useHttpMimeUploadFile(final String url,
                                             final ArrayList<String> 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();

    }

/*
 * 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());
    }

}

httpmine库的地址： http://mvnrepository.com/artifact/org.apache.httpcomponents/httpmime