Android应用中怎么将文件上传到服务器

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1)、新建一个Android项目命名为androidUpload,目录结构如下:

Android应用中怎么将文件上传到服务器

2)、新建FormFile类,用来封装文件信息

package com.ljq.utils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;

/**
 * 上传文件
 */
public class FormFile {
 /* 上传文件的数据 */
 private byte[] data;
 private InputStream inStream;
 private File file;
 /* 文件名称 */
 private String filname;
 /* 请求参数名称*/
 private String parameterName;
 /* 内容类型 */
 private String contentType = "application/octet-stream";
 
 public FormFile(String filname, byte[] data, String parameterName, String contentType) {
  this.data = data;
  this.filname = filname;
  this.parameterName = parameterName;
  if(contentType!=null) this.contentType = contentType;
 }
 
 public FormFile(String filname, File file, String parameterName, String contentType) {
  this.filname = filname;
  this.parameterName = parameterName;
  this.file = file;
  try {
   this.inStream = new FileInputStream(file);
  } catch (FileNotFoundException e) {
   e.printStackTrace();
  }
  if(contentType!=null) this.contentType = contentType;
 }
 
 public File getFile() {
  return file;
 }

 public InputStream getInStream() {
  return inStream;
 }

 public byte[] getData() {
  return data;
 }

 public String getFilname() {
  return filname;
 }

 public void setFilname(String filname) {
  this.filname = filname;
 }

 public String getParameterName() {
  return parameterName;
 }

 public void setParameterName(String parameterName) {
  this.parameterName = parameterName;
 }

 public String getContentType() {
  return contentType;
 }

 public void setContentType(String contentType) {
  this.contentType = contentType;
 }
 
}

3)、新建SocketHttpRequester类,封装上传文件到服务器代码

package com.ljq.utils;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URL;
import java.util.Map;

/**
 * 上传文件到服务器
 * 
 * @author Administrator
 *
 */
public class SocketHttpRequester {
 /**
  * 直接通过HTTP协议提交数据到服务器,实现如下面表单提交功能:
  * 
* @param path 上传路径(注:避免使用localhost或127.0.0.1这样的路径测试,因为它会指向手机模拟器,你可以使用http://www.iteye.cn或http://192.168.1.101:8083这样的路径测试) * @param params 请求参数 key为参数名,value为参数值 * @param file 上传文件 */ public static boolean post(String path, Map params, FormFile[] files) throws Exception{ final String BOUNDARY = "---------------------------7da2137580612"; //数据分隔线 final String endline = "--" + BOUNDARY + "--\r\n";//数据结束标志 int fileDataLength = 0; for(FormFile uploadFile : files){//得到文件类型数据的总长度 StringBuilder fileExplain = new StringBuilder(); fileExplain.append("--"); fileExplain.append(BOUNDARY); fileExplain.append("\r\n"); fileExplain.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n"); fileExplain.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n"); fileExplain.append("\r\n"); fileDataLength += fileExplain.length(); if(uploadFile.getInStream()!=null){ fileDataLength += uploadFile.getFile().length(); }else{ fileDataLength += uploadFile.getData().length; } } StringBuilder textEntity = new StringBuilder(); for (Map.Entry entry : params.entrySet()) {//构造文本类型参数的实体数据 textEntity.append("--"); textEntity.append(BOUNDARY); textEntity.append("\r\n"); textEntity.append("Content-Disposition: form-data; name=\""+ entry.getKey() + "\"\r\n\r\n"); textEntity.append(entry.getValue()); textEntity.append("\r\n"); } //计算传输给服务器的实体数据总长度 int dataLength = textEntity.toString().getBytes().length + fileDataLength + endline.getBytes().length; URL url = new URL(path); int port = url.getPort()==-1 ? 80 : url.getPort(); Socket socket = new Socket(InetAddress.getByName(url.getHost()), port); OutputStream outStream = socket.getOutputStream(); //下面完成HTTP请求头的发送 String requestmethod = "POST "+ url.getPath()+" HTTP/1.1\r\n"; outStream.write(requestmethod.getBytes()); String accept = "Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*\r\n"; outStream.write(accept.getBytes()); String language = "Accept-Language: zh-CN\r\n"; outStream.write(language.getBytes()); String contenttype = "Content-Type: multipart/form-data; boundary="+ BOUNDARY+ "\r\n"; outStream.write(contenttype.getBytes()); String contentlength = "Content-Length: "+ dataLength + "\r\n"; outStream.write(contentlength.getBytes()); String alive = "Connection: Keep-Alive\r\n"; outStream.write(alive.getBytes()); String host = "Host: "+ url.getHost() +":"+ port +"\r\n"; outStream.write(host.getBytes()); //写完HTTP请求头后根据HTTP协议再写一个回车换行 outStream.write("\r\n".getBytes()); //把所有文本类型的实体数据发送出来 outStream.write(textEntity.toString().getBytes()); //把所有文件类型的实体数据发送出来 for(FormFile uploadFile : files){ StringBuilder fileEntity = new StringBuilder(); fileEntity.append("--"); fileEntity.append(BOUNDARY); fileEntity.append("\r\n"); fileEntity.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n"); fileEntity.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n"); outStream.write(fileEntity.toString().getBytes()); if(uploadFile.getInStream()!=null){ byte[] buffer = new byte[1024]; int len = 0; while((len = uploadFile.getInStream().read(buffer, 0, 1024))!=-1){ outStream.write(buffer, 0, len); } uploadFile.getInStream().close(); }else{ outStream.write(uploadFile.getData(), 0, uploadFile.getData().length); } outStream.write("\r\n".getBytes()); } //下面发送数据结束标志,表示数据已经结束 outStream.write(endline.getBytes()); BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream())); if(reader.readLine().indexOf("200")==-1){//读取web服务器返回的数据,判断请求码是否为200,如果不是200,代表请求失败 return false; } outStream.flush(); outStream.close(); reader.close(); socket.close(); return true; } /** * 提交数据到服务器 * @param path 上传路径(注:避免使用localhost或127.0.0.1这样的路径测试,因为它会指向手机模拟器,你可以使用http://www.itcast.cn或http://192.168.1.10:8080这样的路径测试) * @param params 请求参数 key为参数名,value为参数值 * @param file 上传文件 */ public static boolean post(String path, Map params, FormFile file) throws Exception{ return post(path, params, new FormFile[]{file}); } }

4)、新建MainActivity类,实现每隔5秒上传一次

package com.ljq.activity;

import java.io.File;
import java.util.HashMap;
import java.util.Map;

import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.util.Log;

import com.ljq.utils.FormFile;
import com.ljq.utils.SocketHttpRequester;

public class MainActivity extends Activity {
 private File file;
 private Handler handler;
 private static final String TAG="MainActivity";

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  Log.i(TAG, "onCreate");
  
  file = new File(Environment.getExternalStorageDirectory(), "123.rmvb");
  Log.i(TAG, "照片文件是否存在:"+file);
  handler=new Handler();
  handler.post(runnable);
 }
 
 Runnable runnable=new Runnable() {
 
  public void run() {
   Log.i(TAG, "runnable run");
   uploadFile(file);
   handler.postDelayed(runnable, 5000);
  }
 
 };
 
 /**
  * 上传图片到服务器
  * 
  * @param imageFile 包含路径
  */
 public void uploadFile(File imageFile) {
  Log.i(TAG, "upload start");
  try {
   String requestUrl = "http://192.168.1.101:8083/upload/upload/execute.do";
   //请求普通信息
   Map params = new HashMap();
   params.put("username", "张三");
   params.put("pwd", "zhangsan");
   params.put("age", "21");
   params.put("fileName", imageFile.getName());
   //上传文件
   FormFile formfile = new FormFile(imageFile.getName(), imageFile, "image", "application/octet-stream");
   
   SocketHttpRequester.post(requestUrl, params, formfile);
   Log.i(TAG, "upload success");
  } catch (Exception e) {
   Log.i(TAG, "upload error");
   e.printStackTrace();
  }
  Log.i(TAG, "upload end");
 }
}

5)、修改清单文件

<?xml version="1.0" encoding="utf-8"?>

 
 
 
 
 
 
 

 
 
  

 

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