在局域网内，实现从android客户端把手机SD卡上的文件上传到PC服务器端，并保存在PC硬盘的指定文件夹下。同时把PC端硬盘文件的目录和对文件的描述信息保存在mysql数据库中。
1、客户端关键代码：
（1）获得SD卡上的文件
/**
* 获得文件路径和状态信息
*
* @return
*/
private String getFiles() {
File path = null;
// 判断SD卡是否存在可用
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
path = Environment.getExternalStorageDirectory();
File[] files = path.listFiles();
for (File file : files) {
// 把路径如入集合中
if (file.getPath() != null
&& (file.getPath()
.substring(file.getPath().lastIndexOf("/") + 1)
.equals("DATA_RECORD.pcm"))) {
return file.getPath();
}
}
} else {
Toast.makeText(ASRMainActivity.this, "SD卡不可用!", 300).show();
}
return null;
}
（2）实现文件上传的方法
private void fileUpLoad() {
srcPath=getFiles();
new AsyncTask<Void, Void, Void>() {
String end = "\r\n";
String twoHyphens = "--";
String boundary = "****************";
HttpURLConnection con;
URL url = null;
InputStreamReader isr = null;
FileInputStream fis;
DataOutputStream dos;
@Override
protected Void doInBackground(Void... params) {
String record_content=mSharedPreferences.getString("content","");
Log.i("测试",record_content);
try {
// 首先指定服务器的路径URL
url = new URL(
"http://192.168.1.109:8080/MFCC/SpeechRecognizeAction?action_flag=upload&record_content="+record_content);
// 打开一个连接
con = (HttpURLConnection) url.openConnection();
// 设置一些属性
con.setDoInput(true);
con.setDoOutput(true);
con.setDefaultUseCaches(false);
con.setRequestMethod("POST");
con.setRequestProperty("Connection", "Keep-Alive");
con.setRequestProperty("Charset", "UTF-8");
con.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);
con.setReadTimeout(3000);
//
// 创建一个新的数据输出流，将数据写入指定基础输出流
dos = new DataOutputStream(con.getOutputStream());
// 将字符串按字节顺序 写出 到基础输出流中
// dos.writeBytes("Content-Disposition: form-data; name=\"uploads\";filename=1.txt");
// dos.writeBytes("Content-Disposition: form-data;");
dos.writeBytes(twoHyphens + boundary + end);
dos.writeBytes("Content-Disposition: form-data; name=\"file\"; filename=\""
+ srcPath.substring(srcPath.lastIndexOf("/") + 1)
+ "\"" + end);
Log.i("tag",
"Content-Disposition: form-data; name=\"file\"; filename=\""
+ srcPath.substring(srcPath
.lastIndexOf("/") + 1) + "\"" + end);
dos.writeBytes(end);
// dos.writeBytes("1.txt");
// dos.writeBytes("Jonny-Resume.docx");
// 读取写到输出流中的数据
fis = new FileInputStream(srcPath);
byte[] buffer = new byte[8192]; // 8k
int count = 0;
count = fis.read(buffer);
Log.i("tag", count + " ********************");
while ((count = fis.read(buffer)) != -1) {
dos.write(buffer, 0, count);
Log.i("tag", "ok");
}
fis.close();
dos.writeBytes(end);
dos.writeBytes(twoHyphens + boundary + twoHyphens + end);
dos.flush();
// 反馈给客户端的信息
InputStream is = con.getInputStream();
isr = new InputStreamReader(is, "utf-8");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
String result2 = null;
StringBuffer stringBuffer = null;
BufferedReader br = null;
if (isr == null) {
return;
}
try {
br = new BufferedReader(isr);
stringBuffer = new StringBuffer();
while ((result2 = br.readLine()) != null) {
stringBuffer.append(result2);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (dos != null) {
try {
dos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
if (stringBuffer != null)
Toast.makeText(ASRMainActivity.this,
new String(stringBuffer), Toast.LENGTH_LONG).show();
btn_uploadFile.setEnabled(true);
}
}.execute();
}
服务器端关键代码：
/**
* 上传文件到PC，并把相关的文件信息写如数据库
* @param request
* @param response
*/
private void uploadFile(HttpServletRequest request, HttpServletResponse response) {
String content = request.getParameter("record_content");
PrintWriter printWriter=null;
DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();// 实例化一个文件工厂
// 构建一个文件上传类
ServletFileUpload servletFileUpload = new ServletFileUpload(
diskFileItemFactory);// 生成一个处理文件上传的servlet对象
servletFileUpload.setFileSizeMax(3 * 1024 * 1024);
servletFileUpload.setSizeMax(6 * 1024 * 1024);// 上传文件总大小
try {
// 分析请求，并得到上传文件的FileItem对象
printWriter=response.getWriter();
List<FileItem> items = servletFileUpload.parseRequest(request);
Iterator<FileItem> e = items.iterator();
while (e.hasNext()) {
FileItem item = e.next();
if (item.getName() != null && !item.getName().equals("")) {
File file = new File("E://rawSpeechRecordData//");
File newFile = null;
if (!file.exists()) {
file.mkdir();
if (file.isDirectory()) {
SimpleDateFormat format = new SimpleDateFormat(
"yyyyMMddHHmmss");
String date = format.format(new Date(System
.currentTimeMillis()));
newFile = new File(
"E://rawSpeechRecordData//rawdata" + date
+".pcm");
item.write(newFile);
//数据存入数据库
System.out.println("**********************"
+ newFile.getPath());
mFileInfoDao.addFilePathInfos(newFile.getPath(), content);
printWriter.write("数据提交成功！");
System.out.println(file);
System.out
.println("Content-Disposition: form-data; name=\"file\"; filename=\"");
System.out.println("**********************");
}
} else {
if (file.isDirectory()) {
SimpleDateFormat format = new SimpleDateFormat(
"yyyyMMddHHmmss");
String date = format.format(new Date(System
.currentTimeMillis()));
newFile = new File(
"E://rawSpeechRecordData//rawdata" + date
+".pcm");
item.write(newFile);
//数据存入数据库
mFileInfoDao.addFilePathInfos(newFile.getPath(), content);
printWriter.write("数据提交成功！");
System.out.println("**********************"
+ newFile.getPath());
System.out.println(file);
System.out
.println("Content-Disposition: form-data; name=\"file\"; filename=\"");
System.out.println("**********************");
}
}
}
}
} catch (FileUploadException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
3、数据库设计代码：
（1）数据库操作接口定义
public interface FileInfoDao {
/**
* 添加文件路径到数据库
* @param filePath 文件路径
* @param content录音的详细信息
*/
public void addFilePathInfos(String filePath,String content);
/**
* 删除一条录音的路径信息
* @param content 录音的详细信息
*/
public void deleteAFilePathInfo(String content);
/**
* 删除所有的录音文件路径
*/
public void deleteAllFilePathInfos();
/**
* 查询所有的文件路径
* @return
*/
public List<Map<String,String>> getAllFilePaths();
}
（2）数据库操作实现类
public class FileInfoDaoimpl implements FileInfoDao {
// 表示定义数据库的用户名
private final String USERNAME = "root";
// 定义数据库的密码
private final String PASSWORD = "admin";
// 定义数据库的驱动信息
private final static String DRIVER = "com.mysql.jdbc.Driver";
// 定义数据库连接
private static Connection mConnection;
// 定义访问数据库的地址
private final String URL = "jdbc:mysql://192.168.1.109:3306/fileinfos";
// 定义sql语句的执行对象
private PreparedStatement pstmt;
// 定义查询返回的结果集合
private ResultSet resultSet;
public FileInfoDaoimpl() {
// 加载驱动
try {
Class.forName(DRIVER);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void addFilePathInfos(String filePath, String content) {
PreparedStatement preparedStatement = null;
try {
// 获得数据库连接
mConnection = DriverManager.getConnection(URL, "root", "admin");
// 获得SQL语句执行对象
preparedStatement = mConnection
.prepareStatement("insert into filepaths(file_path,record_content) values(?,?)");
// 设置参数
preparedStatement.setString(1, filePath);
preparedStatement.setString(2, content);
// 执行SQL语句
preparedStatement.execute();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (preparedStatement != null) {
try {
preparedStatement.close();
preparedStatement = null;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (mConnection != null) {
try {
mConnection.close();
mConnection = null;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
@Override
public void deleteAFilePathInfo(String content) {
PreparedStatement preparedStatement=null;
//获得数据库连接
try {
mConnection=DriverManager.getConnection(URL,"root","admin");
//获得SQL语句执行对象
preparedStatement=mConnection.prepareStatement("delete from filepaths where record_content=?");
//设置参数
preparedStatement.setString(1, content);
preparedStatement.execute();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if(preparedStatement!=null){
try {
preparedStatement.close();
preparedStatement=null;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(mConnection!=null){
try {
mConnection.close();
mConnection=null;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
@Override
public void deleteAllFilePathInfos() {
PreparedStatement preparedStatement=null;
try {
mConnection=DriverManager.getConnection(URL, USERNAME,PASSWORD);
preparedStatement=mConnection.prepareStatement("delete from filepaths");
preparedStatement.execute();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if(preparedStatement!=null){
try {
preparedStatement.close();
preparedStatement=null;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(mConnection!=null){
try {
mConnection.close();
mConnection=null;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
@Override
public List<Map<String,String>> getAllFilePaths() {
PreparedStatement preparedStatement=null;
List<Map<String,String>> results=new ArrayList<Map<String,String>>();
HashMap<String,String> result=null;
try {
mConnection=DriverManager.getConnection(URL, USERNAME, PASSWORD);
preparedStatement=mConnection.prepareStatement("select file_path,record_content from filepaths");
//查询
resultSet= preparedStatement.executeQuery();
while(resultSet.next()){
result=new HashMap<String, String>();
result.put("filepath", resultSet.getString("file_path"));
result.put("record_content", resultSet.getString("record_content"));
results.add(result);
result=null;
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if(preparedStatement!=null){
try {
preparedStatement.close();
preparedStatement=null;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(mConnection!=null){
try {
mConnection.close();
mConnection=null;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
return results;
}
}
（3）数据库操作对象的静态工厂方法（单例模式）
public class FilePathInfosDaoFactory {
private static FileInfoDao mFileInfoDaoimpl;
/**
* 获得数据库操作单例对象
*
* @return
*/
public static FileInfoDao getInstanse() {
if (mFileInfoDaoimpl == null) {
mFileInfoDaoimpl = new FileInfoDaoimpl();
}
return mFileInfoDaoimpl;
}
}
时间： 2024-08-08 03:06:03