Android上传文件

Android开发经常遇到要上传文件，我在网上找了一些文件上传的解决方案，自己做了一个整合。JavaWeb端参考：JavaWeb学习总结(五十)——文件上传和下载

直接上代码：

1，HttpURLConnection上传文件

package com.yyw.mutilthreaddownload;import android.util.Log;import java.io.BufferedReader;import java.io.DataOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.util.HashMap;import java.util.UUID;/** * HttpURLConnection上传文件 */public class HttpUpLoad {    private static final String TAG = "uploadFile";    private static final int TIME_OUT = 10 * 10000000; // 超时时间    private static final String CHARSET = "utf-8"; // 设置编码    public static final String SUCCESS = "1";    public static final String FAILURE = "0";    /**     *     * @param params 上传的参数     * @param file 文件     * @param RequestURL url地址     * @return 返回     */    public static String uploadFile(HashMap<String,String>params,File file ,String RequestURL) {        String BOUNDARY = UUID.randomUUID().toString(); // 边界标识 随机生成        String PREFIX = "--", LINE_END = "\r\n";        String CONTENT_TYPE = "multipart/form-data"; // 内容类型，指定为上传文件        try {            URL url = new URL(RequestURL);            HttpURLConnection conn = (HttpURLConnection) url.openConnection();            conn.setReadTimeout(TIME_OUT);            conn.setConnectTimeout(TIME_OUT);            conn.setDoInput(true); // 允许输入流            conn.setDoOutput(true); // 允许输出流            conn.setUseCaches(false); // 不允许使用缓存            conn.setRequestMethod("POST"); // 请求方式,必须是大写POST,GET            conn.setRequestProperty("Charset", CHARSET); // 设置编码            conn.setRequestProperty("connection", "keep-alive");            //在请求头中添加请求的分界符            conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary="                    + BOUNDARY);            if (file != null) {                /**                 * 当文件不为空，把文件包装并且上传                 */                OutputStream outputSteam = conn.getOutputStream();                //准备上传文件                DataOutputStream dos = new DataOutputStream(outputSteam);                StringBuffer sb = new StringBuffer();                /************************上传表单的一些设置信息***********************************/                if (params != null)                    for (String key : params.keySet()) {                        sb.append("--" + BOUNDARY + "\r\n");                        sb.append("Content-Disposition: form-data; name=\"" + key                                + "\"" + "\r\n");                        sb.append("\r\n");                        sb.append(params.get(key) + "\r\n");                    }                /************************上传文件的一些设置信息***********************************/                sb.append(PREFIX);                sb.append(BOUNDARY);                sb.append(LINE_END);                /**                 * 这里重点注意： name里面的值为服务器端需要key 只有这个key 才可以得到对应的文件                 * filename是文件的名字，包含后缀名的 比如:abc.png                 */                sb.append("Content-Disposition: form-data; name=\"file\"; filename=\""                        + file.getName() + "\"" + LINE_END);                sb.append("Content-Type: application/octet-stream; charset="                        + CHARSET + LINE_END);                sb.append(LINE_END);                dos.write(sb.toString().getBytes());                /************************上传文件***********************************/                InputStream is = new FileInputStream(file);                byte[] bytes = new byte[1024];                int len = 0;                while ((len = is.read(bytes)) != -1) {                    dos.write(bytes, 0, len);                    Log.i(TAG, "上传成功 +" + len);                }                is.close();                /************************上传文件结束后的结束符号***********************************/                dos.write(LINE_END.getBytes());                byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END)                        .getBytes();                dos.write(end_data);                dos.flush();                /**                 * 获取响应码 200=成功 当响应成功，获取响应的流                 */                int res = conn.getResponseCode();                if (res == 200) {                    //获取返回内容                    InputStream input = conn.getInputStream();                    BufferedReader reader = new BufferedReader(new InputStreamReader(input));                    String result = reader.readLine();                    Log.i(TAG,"上传成功" + result);                    reader.close();                    is.close();                    Log.i(TAG,"上传成功 +"+conn.getResponseMessage());                    return SUCCESS;                }            }        } catch (MalformedURLException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }        return FAILURE;    }}

用HttpURLConnection上传文件有文件大小的限制。参考:从原理角度解析Android （Java） http 文件上传写了一个demo

package com.yyw.mutilthreaddownload;import android.util.Log;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.PrintStream;import java.net.Socket;import java.net.URL;import java.util.Map;/** * Created by yyw on 2016/1/19. * 用Socket模拟HTTP上传比较大的文件, */public class UpBigFile {    public static final String TAG = "UpBigFile";    private String charset = "UTF-8";    /**     *     * @param params 参数     * @param file 文件     * @param url url     */    public void upLoadByScoket(Map<String, String> params,File file, String url) {        try {            String end = "\r\n";            URL mUrl = new URL(url);            String param = getParamString(params);//参数            String fileHeader = getFileHeader(file);//文件的头            String fileEnder = getFileEnder();//内容结束            long l = param.length()+fileHeader.length()+fileEnder.length()+3*end.length()+file.length();//内容的长度            String header = getHeaderString(url, mUrl,l);//请求头            Socket mSocket = new Socket(mUrl.getHost(),mUrl.getPort());//用Socket模拟HTTP请求            OutputStream os = mSocket.getOutputStream();            PrintStream ps = new PrintStream(os,true,charset);            Log.d(TAG, "upLoadByScoket: " + header);            ps.print(header);            ps.print(end);            ps.print(param);            ps.print(end);            ps.print(fileHeader);            ps.print(end);            FileInputStream is = new FileInputStream(file);            byte[] buffer = new byte[1024];            int len = -1;            int count = 0;            while ((len = is.read(buffer))!=-1){                count += len;                Log.i(TAG,"上传成功 +"+count);                os.write(buffer,0,len);            }            os.flush();            ps.print(end);            ps.print(fileEnder);            InputStream input = mSocket.getInputStream();            BufferedReader reader = new BufferedReader(new InputStreamReader(input));            String result = reader.readLine();//返回内容            Log.i(TAG, "上传成功" + result);            reader.close();            is.close();            os.close();            ps.close();        } catch (Exception e) {            e.printStackTrace();        }    }    /**     * 文件开始符号     * @param file     * @return     */    private String getFileHeader(File file){        String boundary = "******";        String end = "\r\n";        StringBuilder builder = new StringBuilder();        builder.append("--");        builder.append(boundary);        builder.append(end);        builder.append("Content-Disposition: form-data; name=\"file\";filename =\""+file.getName()+"\""+end);        builder.append("Content-Type: application/octet-stream; Charset=");        builder.append(charset);        builder.append(end);        return builder.toString();    }    /**     * 内容结束符号     * @return 内容结束符号     */    private String getFileEnder(){        String boundary = "******";        String end = "\r\n";        return "--" + boundary + "--" + end;    }    /**     * 获取请求的表单参数字符串     * @param params 参数内容     * @return 请求的表单参数字符串     */    private String getParamString(Map<String, String> params) {        String boundary = "******";        StringBuilder param = new StringBuilder();        if (params != null)            for (String key : params.keySet()) {                param.append("--" + boundary + "\r\n");                param.append("Content-Disposition: form-data; name=\"" + key                        + "\"" + "\r\n");                param.append("\r\n");                param.append(params.get(key) + "\r\n");            }        return param.toString();    }    /**     * 获取上传的请求头（模仿HTTP请求头）     * @param url 地址     * @param mUrl 地址URL     * @param length 上传内容的长度     * @return 上传请求头     */    private String getHeaderString(String url, URL mUrl,long length) {        String end = "\r\n";        String connection = "keep-alive";        String contentType = "multipart/form-data";        String boundary = "******";//        POST http://192.168.0.55:8082/LearnNew/servlet/UploadHandleServlet HTTP/1.1//        Charset: UTF-8//        connection: keep-alive//        Content-Type: multipart/form-data;boundary=******//        User-Agent: Dalvik/1.6.0 (Linux; U; Android 4.1.1; GT-N8000 Build/JRO03C)//        Host: 192.168.0.55:8082//        Accept-Encoding: gzip//        Content-Length: 2484        StringBuilder header = new StringBuilder();        header.append("POST ");        header.append(url);        header.append(" HTTP/1.1");        header.append(end);        header.append("Charset: ");        header.append(charset);        header.append(end);        header.append("connection: ");        header.append(connection);        header.append(end);        header.append("Content-Type: ");        header.append(contentType);        header.append(";boundary=");        header.append(boundary);        header.append(end);        header.append("User-Agent: Dalvik/1.6.0 (Linux; U; Android 4.1.1; GT-N8000 Build/JRO03C)");        header.append(end);        header.append("Host: ");        header.append(mUrl.getHost());        header.append(end);        header.append("Accept-Encoding: gzip");        header.append(end);        header.append("Content-Length: ");        header.append(length);        header.append(end);        header.toString();        return header.toString();    }}

上传的信息内容：

POST http://192.168.0.55:8082/LearnNew/servlet/UploadHandleServlet HTTP/1.1Charset: UTF-8connection: keep-aliveContent-Type: multipart/form-data;boundary=******User-Agent: Dalvik/1.6.0 (Linux; U; Android 4.1.1; GT-N8000 Build/JRO03C)Host: 192.168.0.55:8082Accept-Encoding: gzipContent-Length: 2484--******Content-Disposition: form-data; name="name"zhangshan--******Content-Disposition: form-data; name="file";filename ="21_55-1447057315784.log"replacements=[Ljava.lang.String;@40dcc5d0HARDWARE=hws8301lmatchers=[Ljava.lang.String;@40dcc550RADIO=unknownHOST=screen105HIDE_PRODUCT_INFO=falseTAGS=release-keysPRODUCT_CHARM=MediaPad X1 7.0ID=HuaweiMediaPadMIN_VERSION_LENGTH=8MANUFACTURER=HUAWEITYPE=userTAG=BuildTIME=1403853553000FINGERPRINT=Huawei/MediaPad/hws8301l:4.2.2/HuaweiMediaPad/S8301uV1R1C233B009:user/release-keysUNKNOWN=unknownPRODUCT_8VOGUE=MediaPad M1 8.0BOARD=BalongV9R1VERSION_MAX_SIZE=30properties={ro.build.internal.t.version=S8-301uV100R001C233B009-01, ro.build.cust.id=S8-301uV100R001C233B009, ro.build.operator.id=S8-301uV100R001C233B009}PRODUCT=MediaPadFilePath=/cust/hwver.propertiesDISPLAY=S8-301uV100R001C233B009USER=jslaveDEVICE=hws8301lMODEL=MediaPad M1 8.0BOOTLOADER=unknownCPU_ABI=armeabi-v7aPRODUCT_UNKNOWN=unknownCPU_ABI2=armeabiIS_DEBUGGABLE=falseSERIAL=A8Z6R14613000263BRAND=Huawei--******--

Android的一个OkHttp的开源网络访问上传文件会很方便。

 /**     * 上传文件     * @param url     * @param file     */    private void upFile(String url,File file){        OkHttpClient client = new OkHttpClient();        RequestBody body = new MultipartBody.Builder().setType(MultipartBody.FORM).addPart(Headers.of("Content-Disposition", "form-data; name=\"file\";filename =\""+file.getName()+"\""),RequestBody.create(null,file)).build();        Request request = new Request.Builder().post(body).url(url).build();        Call call = client.newCall(request);        call.enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {            }            @Override            public void onResponse(Call call, Response response) throws IOException {                String r = response.body().string();                if (response.isSuccessful()) {                    Log.i(TAG, "httpGet1 OK: " + r);                } else {                    Log.i(TAG, "httpGet1 error: " + r);                }            }        });    }