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/1.1
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

--******
Content-Disposition: form-data; name="name"

zhangshan
--******
Content-Disposition: form-data; name="file";filename ="21_55-1447057315784.log"

replacements=[Ljava.lang.String;@40dcc5d0
HARDWARE=hws8301l
matchers=[Ljava.lang.String;@40dcc550
RADIO=unknown
HOST=screen105
HIDE_PRODUCT_INFO=false
TAGS=release-keys
PRODUCT_CHARM=MediaPad X1 7.0
ID=HuaweiMediaPad
MIN_VERSION_LENGTH=8
MANUFACTURER=HUAWEI
TYPE=user
TAG=Build
TIME=1403853553000
FINGERPRINT=Huawei/MediaPad/hws8301l:4.2.2/HuaweiMediaPad/S8301uV1R1C233B009:user/release-keys
UNKNOWN=unknown
PRODUCT_8VOGUE=MediaPad M1 8.0
BOARD=BalongV9R1
VERSION_MAX_SIZE=30
properties={ro.build.internal.t.version=S8-301uV100R001C233B009-01, ro.build.cust.id=S8-301uV100R001C233B009, ro.build.operator.id=S8-301uV100R001C233B009}
PRODUCT=MediaPad
FilePath=/cust/hwver.properties
DISPLAY=S8-301uV100R001C233B009
USER=jslave
DEVICE=hws8301l
MODEL=MediaPad M1 8.0
BOOTLOADER=unknown
CPU_ABI=armeabi-v7a
PRODUCT_UNKNOWN=unknown
CPU_ABI2=armeabi
IS_DEBUGGABLE=false
SERIAL=A8Z6R14613000263
BRAND=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);
}
}
});
}