android 上传文件

来源：互联网发布：赫苏斯数据编辑：程序博客网时间：2024/06/08 19:04

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

[java] view plaincopy
/** 
     * 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();  
  
    }  

二、使用httpmime实现

[java] view plaincopy
/** 
     * 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();  
  
    }  

三、使用OKHttp实现

[java] view plaincopy
/* 
 * 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

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