一、上传工具类FileHelper
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Iterator;
import java.util.Map;
import java.util.UUID;
/**
* Created by Administrator on 2018/3/16.
*/
public class FileHelper
{
static String TAG = "FileHelper";
private static final int TIME_OUT = 10 * 1000; // 超时时间
private static final String CHARSET = "utf-8"; // 设置编码
public static final int GET_OK = 1,GET_ERROR = 2;
public static CallBack mCallBack;
/**
* android上传文件到服务器
*
* @param form 需要上传的文件
* @return 返回响应的内容
*/
public static void uploadFile(final req_multi_form form, final CallBack callBack)
{
mCallBack = callBack;
new Thread(){
@Override
public void run() {
super.run();
String result = null;
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
Map<String, File> files = form.getFileField();
String RequestURL = form.getAction();
Map<String, String> param = form.getNormalField();
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
conn.setRequestProperty("Charset", CHARSET); // 设置编码
conn.setRequestProperty("connection", "keep-alive");
conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary=" + BOUNDARY);
if (files != null) {
/**
* 当文件不为空，把文件包装并且上传
*/
DataOutputStream dos = new DataOutputStream(
conn.getOutputStream());
StringBuffer sb = new StringBuffer();
String params = "";
if (param != null && param.size() > 0) {
Iterator<String> it = param.keySet().iterator();
while (it.hasNext()) {
sb = null;
sb = new StringBuffer();
String key = it.next();
String value = param.get(key);
sb.append(PREFIX).append(BOUNDARY).append(LINE_END);
sb.append("Content-Disposition: form-data; name=\"")
.append(key).append("\"").append(LINE_END)
.append(LINE_END);
sb.append(value).append(LINE_END);
params = sb.toString();
Log.i(TAG, key + "=" + params + "##");
dos.write(params.getBytes());
// dos.flush();
}
}
/**
* 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
*/
if( files != null && files.size() > 0)
{
Iterator<String> it = files.keySet().iterator();
while (it.hasNext())
{
sb = new StringBuffer();
sb.append(PREFIX);
sb.append(BOUNDARY);
sb.append(LINE_END);
String key = it.next();
File file = files.get(key);
//sb.append("Content-Disposition: form-data; name=\"multipartfile["+flag+"]\";filename=\"" + file.getName() + "\"" + LINE_END);
sb.append("Content-Disposition: form-data; name=\""+key+"\";filename=\"" + file.getName() + "\"" + LINE_END);
if (file.getName().contains("3gp")) {
sb.append("Content-Type: video/3gpp; charset=" + CHARSET + LINE_END);
}else if (file.getName().contains("mp4")) {
sb.append("Content-Type: video/mpeg4; charset=" + CHARSET + LINE_END);
}else if (file.getName().contains("amr")) {
sb.append("Content-Type: audio/mpeg; charset=" + CHARSET + LINE_END);
}else{
sb.append("Content-Type: image/pjpeg; charset=" + CHARSET + LINE_END);
}
sb.append(LINE_END);
dos.write(sb.toString().getBytes());
Log.i(TAG, "files=" + sb.toString() + "##");
InputStream is = new FileInputStream(file);
byte[] bytes = new byte[1024];
int len = 0;
while ((len = is.read(bytes)) != -1) {
dos.write(bytes, 0, len);
}
is.close();
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) {
InputStream input = conn.getInputStream();
StringBuffer sb1 = new StringBuffer();
int ss;
while ((ss = input.read()) != -1) {
sb1.append((char) ss);
}
result = sb1.toString();
Message msg = new Message();
msg.what = GET_OK;
msg.obj = result;
handler.sendMessage(msg);
} else {
handler.sendEmptyMessage(GET_ERROR);
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
handler.sendEmptyMessage(GET_ERROR);
} catch (IOException e) {
e.printStackTrace();
handler.sendEmptyMessage(GET_ERROR);
}
}
}.start();
}
public static Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what)
{
case GET_OK:
mCallBack.success((String) msg.obj);
break;
case GET_ERROR:
mCallBack.error();
break;
}
}
};
public interface CallBack{
public void success(String res);
public void error();
}
}
二、参数对象req_multi_form
import java.io.File;
import java.util.Map;
/**
* 多文件表单
* Created by Administrator on 2018/3/17.
*/
public class req_multi_form
{
Map<String, File> fileField;
Map<String, String> normalField;
String action;
String method;
public Map<String, File> getFileField() {
return fileField;
}
public void setFileField(Map<String, File> fileField) {
this.fileField = fileField;
}
public Map<String, String> getNormalField() {
return normalField;
}
public void setNormalField(Map<String, String> normalField) {
this.normalField = normalField;
}
public String getAction() {
return action;
}
public void setAction(String action) {
this.action = action;
}
public String getMethod() {
return method;
}
public void setMethod(String method) {
this.method = method;
}
}
附：form-data; name设置相同可以在后台用数组接收
http协议例子
Header = {"Content-type" : "multipart/form-data, boundary=AaB03x"}
Data = "--AaB03x\r\n" +
"content-disposition: form-data; name=\"field1\"\r\n" +
"\r\n" +
"Joe Blow\r\n" +
"--AaB03x\r\n" +
"content-disposition: form-data; name="pics"; filename=\"file1.txt\"\r\n" +
"Content-Type: text/plain\r\n" +
"\r\n" +
"...binary contents of file1.txt ...\r\n" +
"--AaB03x--\r\n"