Android上传文件到服务器的方法

本文实例为大家分享了Android端实现文件上传的具体代码，供大家参考，具体内容如下

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

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;


public class FormFile {
 
 private byte[] data;
 private InputStream inStream;
 private File file;
 
 private String filname;
 
 private String parameterName;
 
 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;


public class SocketHttpRequester {
 
 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 + "--rn";//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("rn");
    fileExplain.append("Content-Disposition: form-data;name=""+ uploadFile.getParameterName()+"";filename=""+ uploadFile.getFilname() + ""rn");
    fileExplain.append("Content-Type: "+ uploadFile.getContentType()+"rnrn");
    fileExplain.append("rn");
    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("rn");
   textEntity.append("Content-Disposition: form-data; name=""+ entry.getKey() + ""rnrn");
   textEntity.append(entry.getValue());
   textEntity.append("rn");
  }
  //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/1.1rn";
  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, *
 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);
  }
 
 };
 
 
 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

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。