图片拍照上传和相册选取

来源：互联网发布：知乎句子孤独编辑：程序博客网时间：2024/04/30 11:53

拍照上传和本地上传实现:

Intent it = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

startActivityForResult(it, 1);

Intent intent = new Intent();

intent.setType("image/*");

intent.setAction(Intent.ACTION_GET_CONTENT);

startActivityForResult(intent, 2);

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

super.onActivityResult(requestCode, resultCode, data);

if (resultCode == Activity.RESULT_OK) {

Log.d("TAG", "onActivityResult");

switch(requestCode) {

case 1:

Log.d("TAG", "camera");

Uri uri1 = data.getData();

Bitmap b = null;

if(uri1!=null){

b = BitmapFactory.decodeFile(uri1.getPath());

}else{

Bundle extras = data.getExtras();

if(extras!=null){

b = (Bitmap) extras.get("data");

}else{

Toast.makeText(this, "获取图片失败!", Toast.LENGTH_LONG).show();

return;

}

mImageView.setImageBitmap(b);

//将Bitmap保存至SD卡

//开启异步任务,上传至服务器

break;

case 2:

Log.d("TAG", "pictrue");

Uri uri = data.getData();

Log.d("TAG", "uri: " + uri);

mImageView.setImageURI(uri);

ContentResolver cr = this.getContentResolver();

Cursor c = cr.query(uri, null, null, null, null);

c.moveToFirst();

String photoTemp = c.getString(c.getColumnIndex("_data"));

Log.d("TAG", "photoTemp: " + photoTemp);

//开启异步任务,上传至服务器

break;

default:

break;

};

}

--------------------------------------------------------------------------------------------------

文件上传客户端实现:

/* 上传文件至Server的方法 */

private void uploadFile()

{

String uploadUrl = "http://192.168.8.40:8080/JavaWebTest/upload";

String end = "\r\n";

String twoHyphens = "--";

String boundary = "******";

try

{

URL url = new URL(uploadUrl);

HttpURLConnection httpURLConnection = (HttpURLConnection) url

.openConnection();

httpURLConnection.setDoInput(true);

httpURLConnection.setDoOutput(true);

httpURLConnection.setUseCaches(false);

httpURLConnection.setRequestMethod("POST");

httpURLConnection.setRequestProperty("Connection", "Keep-Alive");

httpURLConnection.setRequestProperty("Charset", "UTF-8");

httpURLConnection.setRequestProperty("Content-Type",

"multipart/form-data;boundary=" + boundary);

DataOutputStream dos = new DataOutputStream(httpURLConnection

.getOutputStream());

dos.writeBytes(twoHyphens + boundary + end);

dos.writeBytes("Content-Disposition: form-data; name=\"file\"; filename=\""

+ srcPath.substring(srcPath.lastIndexOf("/") + 1)

+ "\"" + end);

dos.writeBytes(end);

FileInputStream fis = new FileInputStream(srcPath);

byte[] buffer = new byte[8192]; // 8k

int count = 0;

while ((count = fis.read(buffer)) != -1)

{

dos.write(buffer, 0, count);

}

fis.close();

dos.writeBytes(end);

dos.writeBytes(twoHyphens + boundary + twoHyphens + end);

dos.flush();

InputStream is = httpURLConnection.getInputStream();

InputStreamReader isr = new InputStreamReader(is, "utf-8");

BufferedReader br = new BufferedReader(isr);

String result = br.readLine();

Toast.makeText(this, result, Toast.LENGTH_LONG).show();

dos.close();

is.close();

} catch (Exception e)

{

e.printStackTrace();

setTitle(e.getMessage());

}

------------------------------------------------------------------------------------------------------

文件上传服务端实现:

@Override

protected void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

try

{

request.setCharacterEncoding("UTF-8"); // 设置处理请求参数的编码格式

response.setContentType("text/html;charset=UTF-8"); // 设置Content-Type字段值

PrintWriter out = response.getWriter();

// 下面的代码开始使用Commons-UploadFile组件处理上传的文件数据

FileItemFactory factory = new DiskFileItemFactory(); // 建立FileItemFactory对象

ServletFileUpload upload = new ServletFileUpload(factory);

// 分析请求，并得到上传文件的FileItem对象

@SuppressWarnings("unchecked")

List<FileItem> items = upload.parseRequest(request);

// 从web.xml文件中的参数中得到上传文件的路径

String uploadPath = request.getSession().getServletContext().getRealPath("/images/");

System.out.println("uploadPath: " +uploadPath);

File file = new File(uploadPath);

if (!file.exists())

{

file.mkdir();

}

String filename = ""; // 上传文件保存到服务器的文件名

InputStream is = null; // 当前上传文件的InputStream对象

// 循环处理上传文件

for (FileItem item : items)

{

// 处理普通的表单域

if (item.isFormField())

{

if (item.getFieldName().equals("filename"))

{

// 如果新文件不为空，将其保存在filename中

if (!item.getString().equals(""))

filename = item.getString("UTF-8");

System.out.println("filename: -------" + filename);

}

// 处理上传文件

else if (item.getName() != null && !item.getName().equals(""))

{

// 从客户端发送过来的上传文件路径中截取文件名

filename = item.getName().substring(

item.getName().lastIndexOf("\\") + 1);

System.out.println("filename: +++++++++++" + filename);

is = item.getInputStream(); // 得到上传文件的InputStream对象

}

// 将路径和上传文件名组合成完整的服务端路径

filename = uploadPath + "\\" + filename;

System.out.println("filename:==========" + filename);

// 如果服务器已经存在和上传文件同名的文件，则输出提示信息

if (new File(filename).exists())

{

new File(filename).delete();

}

// 开始上传文件

if (!filename.equals(""))

{

// 用FileOutputStream打开服务端的上传文件

FileOutputStream fos = new FileOutputStream(filename);

byte[] buffer = new byte[8192]; // 每次读8K字节

int count = 0;

// 开始读取上传文件的字节，并将其输出到服务端的上传文件输出流中

while ((count = is.read(buffer)) > 0)

{

fos.write(buffer, 0, count); // 向服务端文件写入字节流

}

fos.flush();

fos.close(); // 关闭FileOutputStream对象

is.close(); // InputStream对象

out.println("文件上传成功!");

out.flush();

out.close();

}

// 将图片的url更新至数据表

}

catch (Exception e)

{

e.printStackTrace();

}

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