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Android上传图片的方式

 Android上传图片并附带数据使用文件流
关于Android图片上传的两种方式,一种是文件流的方式上传,图片转换成二进制上传;另一种是把图片转成Base64方式上传.
1.文件流上传图片、(图片上传需要一个图片的路径,同时调用本地相册或者拍照可以返回的图片路径,假设获得的图片路径是PicPath)

 首先封装要发送的数据,数据封装好了以后用String path==URLEncodedUtils.format(Parameters,"UTF-8");来编码;然后开启线程发送数据.

activity:

封装数据

@SuppressLint("SimpleDateFormat")
public String getrubbishIfo() throws IOException {

final List<NameValuePair> Parameters = new ArrayList<NameValuePair>();
Parameters.add(new BasicNameValuePair("runame", thingname.getText()

.toString().trim()));
Parameters.add(new BasicNameValuePair("ruleibie", fenlei

.getSelectedItem().toString()));
Parameters.add(new BasicNameValuePair("rubeizhu", beizhu.getText()

.toString().trim()));
Parameters.add(new BasicNameValuePair("rufreetime", freetime

.getSelectedItem().toString()));
Parameters.add(new BasicNameValuePair("userphone", userphone));

Parameters.add(new BasicNameValuePair("address", address.getText()
.toString().trim()));

Parameters.add(new BasicNameValuePair("username", username));
Parameters.add(new BasicNameValuePair("rudate", ""));

System.out.println("Parameters:" + Parameters);
String path=URLEncodedUtils.format(Parameters,"UTF-8");

System.out.println(path+"0000000000000000000");
return path;

}

Handler myhandler = new Handler() {
public void handleMessage(Message msg) {

String text = (String) msg.obj;
if (text.equals("yes")) {

Log.d("click", "不为空了");
Toast.makeText(getApplicationContext(), "发布成功!!!", Toast.LENGTH_SHORT)

.show();
} else {

Toast.makeText(getApplicationContext(), "发布失败!!!",
Toast.LENGTH_LONG).show();

}
};

};

//提交数据

class tijiaoListener implements OnClickListener {

@Override
public void onClick(View v) {

// TODO Auto-generated method stub

new Thread(new Runnable() {

@Override
public void run() {

// TODO Auto-generated method stub
UploadFile_image up=new UploadFile_image();

try {

String

path = getrubbishIfo();
String restr=up.uploadFile(HttpPath.FABU_PATH+"?"+path, picpath);//HttpPath.FABU_PATH为路径,将封装好的数据path绑到路径后传递给服务器,picpath为图片路径

Message message = myhandler.obtainMessage();
message.obj = restr;

myhandler.sendMessage(message);
} catch (IOException e) {

// TODO Auto-generated catch block
e.printStackTrace();

}

}
}).start();

下边是工具类UploadFile_image up也就是图片格式准换的方式;

package com.back.util;

import java.io.DataOutputStream;
import java.io.FileInputStream;

import java.io.InputStream;
import java.net.HttpURLConnection;

import java.net.URL;
public class UploadFile_image {

private String newName ="image.jpg";
/* 上传文件至Server的方法 */

public String uploadFile(String actionUrl,String picPath)
{

String end ="\r\n";
String twoHyphens ="--";

String boundary ="*****";//边界标识
try

{
URL url =new URL(actionUrl);

HttpURLConnection con=(HttpURLConnection)url.openConnection();
/* 允许Input、Output,不使用Cache */

con.setDoInput(true);//允许输入流
con.setDoOutput(true);//允许输出流

con.setUseCaches(false);//不允许使用缓存
/* 设置传送的method=POST */

con.setRequestMethod("POST");
/* setRequestProperty 设置编码 */

con.setRequestProperty("Connection", "Keep-Alive");
con.setRequestProperty("Charset", "UTF-8");

con.setRequestProperty("Content-Type",// "multipart/form-data"这个参数来说明我们这传的是文件不是字符串了
"multipart/form-data;boundary="+boundary);

/* 设置DataOutputStream */
DataOutputStream ds =

new DataOutputStream(con.getOutputStream());
ds.writeBytes(twoHyphens + boundary + end);

ds.writeBytes("Content-Disposition: form-data; "+
"name=\"file1\";filename=\""+

newName +"\""+ end); 
ds.writeBytes(end);

/* 取得文件的FileInputStream */

FileInputStream fStream =new FileInputStream(picPath);
/* 设置每次写入1024bytes */

int bufferSize =1024;
byte[] buffer =new byte[bufferSize];

int length =-1;
/* 从文件读取数据至缓冲区 */

while((length = fStream.read(buffer)) !=-1)
{
/* 将资料写入DataOutputStream中 */

ds.write(buffer, 0, length);
}
ds.writeBytes(end);

ds.writeBytes(twoHyphens + boundary + twoHyphens + end);
/* close streams */

fStream.close();
ds.flush();

/* 取得Response内容 */
InputStream is = con.getInputStream();

int ch;
StringBuffer b =new StringBuffer();

while( ( ch = is.read() ) !=-1 )
{
b.append( (char)ch );

}
/* 将Response显示于Dialog */

// showDialog("上传成功"+b.toString().trim());

/* 关闭DataOutputStream */
ds.close();

//返回客户端返回的信息
return b.toString().trim();

}
catch(Exception e)

{
//showDialog("上传失败"+e);

return null;
}
}

}

安卓端结束;

下边是服务器端代码

package cn.back.servlet.app;

import java.io.File;
import java.io.IOException;

import java.io.OutputStream;
import java.io.PrintWriter;

import java.net.URLDecoder;
import java.text.DateFormat;

import java.text.SimpleDateFormat;
import java.util.Date;

import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.DiskFileUpload;
import org.apache.commons.fileupload.FileItem;

import cn.back.domin.Things;
import cn.back.service.backservice;

import cn.back.service.backserviceImp;

public class UploadImageapp extends HttpServlet {
private String name;

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

doPost(request, response);
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

//接受图片

String temp = request.getSession().getServletContext().getRealPath("/")
+ "temp"; // 临时目录

System.out.println("temp=" + temp);
String loadpath = request.getSession().getServletContext()

.getRealPath("/")
+ "imagething"; // 上传文件存放目录

System.out.println("loadpath=" + loadpath);
DiskFileUpload fu = new DiskFileUpload();

fu.setSizeMax(1 * 1024 * 1024); // 设置允许用户上传文件大小,单位:字节
fu.setSizeThreshold(4096); // 设置最多只允许在内存中存储的数据,单位:字节

fu.setRepositoryPath(temp); // 设置一旦文件大小超过getSizeThreshold()的值时数据存放在硬盘的目录

// 开始读取上传信息
int index = 0;

List fileItems = null;

try {
fileItems = fu.parseRequest(request);

System.out.println("fileItems=" + fileItems);
} catch (Exception e) {

e.printStackTrace();
}

Iterator iter = fileItems.iterator(); // 依次处理每个上传的文件
while (iter.hasNext()) {

FileItem item = (FileItem) iter.next();// 忽略其他不是文件域的所有表单信息
if (!item.isFormField()) {

name = item.getName();// 获取上传文件名,包括路径
name = name.substring(name.lastIndexOf("\\") + 1);// 从全路径中提取文件名

long size = item.getSize();
if ((name == null || name.equals("")) && size == 0)

continue;
int point = name.indexOf(".");

// name=(new
// Date()).getTime()+name.substring(point,name.length())+index;

name = (new Date()).getTime()
+ name.substring(point, name.length());

index++;
File fNew = new File(loadpath,name);

try {
item.write(fNew);

} catch (Exception e) {
// TODO Auto-generated catch block

e.printStackTrace();
}

} else// 取出不是文件域的所有表单信息
{
String

fieldvalue = item.getString();
// 如果包含中文应写为:(转为UTF-8编码)

// String fieldvalue = new String(item.getString().getBytes(),"UTF-8");
}

}

//图片接受完毕

//接收数据并存储
String path="/back/imagething/"+name;

request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");

Date now = new Date();
DateFormat dataFormat = new SimpleDateFormat("yyyy/MM/dd hh:mm:ss");// 2014/08/31// 04:08:26获取时间

String fabutime = dataFormat.format(now);
backservice bs = new backserviceImp();

Things t = new Things();
t.setThingname(new String(request.getParameter("runame").getBytes("ISO_8859-1"),"UTF-8"));

//由于是用URLEncodedUtils编码所以解码比较麻烦,关于解码我有一篇单独的博客写编码

System.out.println(name+"11111111111111111111111");

t.setThingleibie(new String(request.getParameter("ruleibie").getBytes("ISO_8859-1"),"UTF-8"));

t.setThingbeizhu(new String(request.getParameter("rubeizhu").getBytes("ISO_8859-1"),"UTF-8"));
t.setThingfreetime(new String(request.getParameter("rufreetime").getBytes("ISO_8859-1"),"UTF-8"));

t.setThingimg(path);
t.setThingfabutime(fabutime);

t.setUsername(new String(request.getParameter("username").getBytes("ISO_8859-1"),"UTF-8"));
t.setUserphone(new String(request.getParameter("userphone").getBytes("ISO_8859-1"),"UTF-8"));

t.setAddress(new String(request.getParameter("address").getBytes("ISO_8859-1"),"UTF-8"));

int flag = bs.addBack(t);

if (flag != 0) {
System.out.println("app注册成功");

}else
{
System.out.println("0000000000000");

}

//发送数据

response.setContentType("text/plain");
response.setCharacterEncoding("UTF-8");
PrintWriter out = response.getWriter();//发送数据

out.write("yes");
out.flush();

out.close();

}

} 


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