sqlite工具数据库的操作:
package com.darkblue.dynem.util.sqlitedb;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.logging.Logger;
import org.mortbay.util.Log;
import com.darkblue.dynem.test.TestEIMMainFrame;
import com.darkblue.dynem.util.filehelp.FileBean;
public class SqliteDB {
private static final Logger log = Logger.getLogger(SqliteDB.class.toString());
Connection conn;
Statement stat;
//连接到数据库
public SqliteDB(){
try {
Class.forName("org.sqlite.JDBC");
conn=DriverManager.getConnection("jdbc:sqlite:filebean.db");
stat=conn.createStatement();
log.info("连接到Sqlite");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//FileBean是在别处定义的类。作为例子使用。
public FileBean readDB(){
try {
stat=conn.createStatement();
ResultSet rs = stat.executeQuery("select * from ftable;");
/*
*将数据库中的数据读到一个byte数组中
*通过ByteArrayInputStream传入ObjectInputStream中
*从ObjectInputStream读出object对象并强制转换成Task
*/
byte[] data=rs.getBytes(1);
ByteArrayInputStream byteArrayInputStream=new ByteArrayInputStream(data);
ObjectInputStream objectInputStream=new ObjectInputStream(byteArrayInputStream);
FileBean filebean=(FileBean)(objectInputStream.readObject());
byteArrayInputStream.close();
objectInputStream.close();
rs.close();
stat.close();
conn.close();
log.info("查询对象，关闭流 、sqlite数据库连接");
return filebean;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
public void saveDB(FileBean filebean){
try {
// stat.executeUpdate("drop table if exists filetable;");
// stat.executeUpdate("create table filetable (filetable);");
stat.executeUpdate("create table if not exists ftable(ftable);");
PreparedStatement prep=conn.prepareStatement("insert into ftable values(?);");
/*
*使用ObjectOutputStream将对象序列化，
*传入ByteArrayOutputStream中，
*最后输出到一个byte类型的数组中
*而这样的数组可以直接存入数据库
*/
ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream();
ObjectOutputStream objectOutputStream = new ObjectOutputStream(arrayOutputStream);
objectOutputStream.writeObject(filebean);
objectOutputStream.flush();
byte[] data=arrayOutputStream.toByteArray();
prep.setBytes(1, data);
prep.addBatch();
arrayOutputStream.close();
objectOutputStream.close();
conn.setAutoCommit(false);
prep.executeBatch();
conn.setAutoCommit(true);
stat.close();
conn.close();
log.info("数据保存，关闭流 、sqlite数据库连接");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String[] args) {
FileBean fBean =new SqliteDB().readDB();
System.out.println(fBean.getFilepath());
}
}
}
实体类:
import java.io.Serializable;
/**
* 发送消息列表
* Created by Administrator on 2016/8/12.
*/
public class FileBean implements Serializable {
public String id;
public long filesize;//文件大小
public String filename;//文件名字
public String filepath;//文件路径
public String filesource;//文件分享源
public String getFilesource() {
return filesource;
}
public void setFilesource(String filesource) {
this.filesource = filesource;
}
public long getFilesize() {
return filesize;
}
public void setFilesize(long filesize) {
this.filesize = filesize;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getFilename() {
return filename;
}
public void setFilename(String filename) {
this.filename = filename;
}
public String getFilepath() {
return filepath;
}
public void setFilepath(String filepath) {
this.filepath = filepath;
}
@Override
public String toString() {
return "FileBean{" +
"id='" + id + '\'' +
", filesize=" + filesize +
", filename='" + filename + '\'' +
", filepath='" + filepath + '\'' +
", filesource='" + filesource + '\'' +
'}';
}
public FileBean() {
}
public String toJsonString() {
return "{\"id\":\"" + id + "\",\"filename\":\"" + filename + "\",\"filepath\":\"" + filepath + "\",\"filesize\":\"" + filesize + "\",\"filesource\":\"" + filesource + "\"}";
}
}
调用工具类:
package com.darkblue.dynem.util.filehelp;
import java.io.File;
import java.net.URI;
import java.sql.Connection;
import java.sql.Statement;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.logging.Logger;
import com.coolface.base.entity.NetworkChangeEvent;
import com.coolface.base.face.INetworkChangeListener;
import com.coolface.base.service.CoolfaceCoreManager;
import com.coolface.base.util.CoolfaceUtility;
import com.darkblue.dynem.util.sqlitedb.SQLiteJdbcUtils;
import com.darkblue.dynem.util.sqlitedb.SqliteDB;
import net.coolface.cloudnet.id.ID;
import net.coolface.cloudnet.id.IDFactory;
/**
* Created by Houo on 2017/5/23.
*/
public class Fileutil {
private static boolean isDirectory;
public static boolean isDirectory(File file) {
isDirectory = false;
File[] fileArray = file.listFiles();
if (fileArray.length > 0) {
isDirectory = true;
}
return isDirectory;
}
/**
* 文件夹文件排序
*
* @param files
* @return
*/
public static File[] sortFile(File[] files) {
List<File> listfile = Arrays.asList(files);
Collections.sort(listfile, new CustomComparator()); //按照指定的规则进行一个排序
File[] array = listfile.toArray(new File[listfile.size()]);
return array;
}
/**
* 转换文件大小
*
* @param
* @return
*/
// 递归取得文件夹（包括子目录）中所有文件的大小
public static long getFileSize(File f) throws Exception// 取得文件夹大小
{
long size = 0;
File flist[] = f.listFiles();
for (int i = 0; i < flist.length; i++) {
if (flist[i].isDirectory()) {
size = size + getFileSize(flist[i]);
} else {
size = size + flist[i].length();
}
}
return size;
}
public static String FormetFileSize(long fileS) {
DecimalFormat df = new DecimalFormat("#.00");
String fileSizeString = "";
if (fileS < 1024) {
fileSizeString = df.format((double) fileS) + "B";
} else if (fileS < 1048576) {
fileSizeString = df.format((double) fileS / 1024) + "K";
} else if (fileS < 1073741824) {
fileSizeString = df.format((double) fileS / 1048576) + "M";
} else {
fileSizeString = df.format((double) fileS / 1073741824) + "G";
}
return fileSizeString;
}
// public static String[] getFileName() {
// File file = new File(path);
// String[] fileName = file.list();
// return fileName;
// }
public static List<String> getFileName(String path) {
File f = new File(path);
List<String> result = new ArrayList<String>();
if (!f.exists()) {
System.out.println("文件存储,路径不存在");
return null;
}
File fa[] = f.listFiles();
for (int i = 0; i < fa.length; i++) {
File fs = fa[i];
if (!fs.isDirectory()) {
result.add(fs.getName());
List<FileBean> files=new ArrayList<FileBean>();
FileBean file=new FileBean();
file.setId("share_Other" + (int) ((Math.random() * 9 + 1) * 100000));
file.setFilename(fs.getName());
file.setFilesize(fs.length());
file.setFilepath(fs.getAbsolutePath());
// file.setFilesource(CommUtil.localPeerId+"");
file.setFilesource(CoolfaceCoreManager.instance().getPeergroup().getPeerID()+"");
files.add(file);
// SqliteUtils.sharefileDBManager.add(files);
new SqliteDB().saveDB(file);
/*//1.建立数据库连接
try {
SQLiteJdbcUtils sutil = new SQLiteJdbcUtils();
Connection conn = sutil.getConn("data.db");
conn.setAutoCommit(false);
Statement stat = conn.createStatement();
stat.executeUpdate( "create table if not exists filetable (id varchar(20), "
+ "filesize long,filename varchar(20),filepath varchar(20),filesource "
+ "varchar(20));" );//创建一个表
sutil.execute("");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}*/
}
}
return result;
}
public static String[] getFileNames(List<String> filelist) {
if(filelist!=null){
String[] file = new String[filelist.size()];
return filelist.toArray(file);
}
else {
return null;
}
}
// public static File[] FilesFilter(File[] files) {
// for (int i = 0; i < files.length; i++) {
// if (!files[i].isDirectory()) {
// return files;
// }
// }
// return files;
// }
}
调用方法:
Fileutil.getFileName(file.getAbsolutePath()); //此处共享存至本地sqlite 方法调用