解决 tempdb 中磁盘空间不足的问题、tempdb变得比较大,已经把磁盘占满的问题解决:
1、最简单的办法:重启SQL Server服务(这个是简单的方法,重启后,tempdb数据库会还原到初始状态,也就是自动清除临时数据)
2、如果SQL Server 是安装在默认路径,那么 tempdb.mdf 和 templog.ldf 文件在以下路径:
“C:\Program Files\Microsoft SQL Server\MSSQL\Data\”
解决 tempdb 中磁盘空间不足的问题、tempdb变得比较大,已经把磁盘占满的问题解决:
1、最简单的办法:重启SQL Server服务(这个是简单的方法,重启后,tempdb数据库会还原到初始状态,也就是自动清除临时数据)
2、如果SQL Server 是安装在默认路径,那么 tempdb.mdf 和 templog.ldf 文件在以下路径:
“C:\Program Files\Microsoft SQL Server\MSSQL\Data\”
对于SQL Server 2008,有几个地方是要注意的,比方在还原数据库时,这就使还原的数据库文件制定为. bak。还原数据库时,如果出现“备份集中的数据库备份与现有数据库不同”错误的,使用下面的方法进行还原。
public string GetHtml(string url, string Referer, Encoding encode, bool SaveCookie) { HttpWebRequest req = WebRequest.Create(url) as HttpWebRequest; req.Method = "GET"; req.CookieContainer = this.CookieContainer; req.Proxy = null; if (!string.IsNullOrEmpty(Referer)) req.Referer = Referer; using (HttpWebResponse hwr = req.GetResponse() as HttpWebResponse) { if (SaveCookie) { this.CookieCollection = hwr.Cookies; this.CookieContainer.GetCookies(req.RequestUri); } using (StreamReader SR = new StreamReader(hwr.GetResponseStream(), encode)) { return SR.ReadToEnd(); } } }
public string PostHtml(string url, string Referer, string data, Encoding encode, bool SaveCookie) { HttpWebRequest req = WebRequest.Create(url) as HttpWebRequest; req.CookieContainer = this.CookieContainer; req.ContentType = "application/x-www-form-urlencoded"; req.Method = "POST"; req.UserAgent = "Mozilla/5.0 (Windows NT 5.1; rv:30.0) Gecko/20100101 Firefox/30.0"; req.Proxy = null; req.ProtocolVersion = HttpVersion.Version10; if (!string.IsNullOrEmpty(Referer)) req.Referer = Referer; byte[] mybyte = Encoding.Default.GetBytes(data); req.ContentLength = mybyte.Length; using (Stream stream = req.GetRequestStream()) { stream.Write(mybyte, 0, mybyte.Length); } using (HttpWebResponse hwr = req.GetResponse() as HttpWebResponse) { if (SaveCookie) { this.CookieCollection = hwr.Cookies; this.CookieContainer.GetCookies(req.RequestUri); } using (StreamReader SR = new StreamReader(hwr.GetResponseStream(), encode)) { return SR.ReadToEnd(); } } }
using System.IO; using System.Net; using System.Text; using System.Diagnostics; using System.Text.RegularExpressions; //从ftp上下载文件 private void Download(string filePath, string ImageSrc, string ImageName, string ftpServerIP, string ftpUserName, string ftpPwd) { if (!Directory.Exists(filePath)) { Directory.CreateDirectory(filePath); } using (FileStream OutputStream = new FileStream(filePath + "\\" + ImageName, FileMode.Create)) { FtpWebRequest ReqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + ImageSrc)); ReqFTP.Method = WebRequestMethods.Ftp.DownloadFile; ReqFTP.UseBinary = true; ReqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd); using (FtpWebResponse response = (FtpWebResponse)ReqFTP.GetResponse()) { using (Stream FtpStream = response.GetResponseStream()) { long Cl = response.ContentLength; int bufferSize = 2048; int readCount; byte[] buffer = new byte[bufferSize]; readCount = FtpStream.Read(buffer, 0, bufferSize); while (readCount > 0) { OutputStream.Write(buffer, 0, readCount); readCount = FtpStream.Read(buffer, 0, bufferSize); } FtpStream.Close(); } response.Close(); } OutputStream.Close(); } } //从服务器上传文件到FTP上 private void UploadSmall(string sFileDstPath, string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd) { FileInfo fileInf = new FileInfo(sFileDstPath); FtpWebRequest reqFTP; reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + FolderName + "/" + fileInf.Name)); reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd); reqFTP.KeepAlive = false; reqFTP.Method = WebRequestMethods.Ftp.UploadFile; reqFTP.UseBinary = true; reqFTP.ContentLength = fileInf.Length; int buffLength = 2048; byte[] buff = new byte[buffLength]; int contentLen; using (FileStream fs = fileInf.OpenRead()) { using (Stream strm = reqFTP.GetRequestStream()) { contentLen = fs.Read(buff, 0, buffLength); while (contentLen != 0) { strm.Write(buff, 0, contentLen); contentLen = fs.Read(buff, 0, buffLength); } strm.Close(); } fs.Close(); } } //删除服务器上的文件 private void DeleteWebServerFile(string sFilePath) { if (File.Exists(sFilePath)) { File.Delete(sFilePath); } } //删除FTP上的文件 private void DeleteFtpFile(string[] IName, string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd) { foreach (string ImageName in IName) { string[] FileList = GetFileList(FolderName, ftpServerIP, ftpUserName, ftpPwd); for (int i = 0; i < FileList.Length; i++) { string Name = FileList[i].ToString(); if (Name == ImageName) { FtpWebRequest ReqFTP; ReqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + FolderName + "/" + ImageName)); ReqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd); ReqFTP.KeepAlive = false; ReqFTP.Method = WebRequestMethods.Ftp.DeleteFile; ReqFTP.UseBinary = true; using (FtpWebResponse Response = (FtpWebResponse)ReqFTP.GetResponse()) { long size = Response.ContentLength; using (Stream datastream = Response.GetResponseStream()) { using (StreamReader sr = new StreamReader(datastream)) { sr.ReadToEnd(); sr.Close(); } datastream.Close(); } Response.Close(); } } } } } //检查文件是否存在 public string[] GetFileList(string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd) { string[] downloadFiles; StringBuilder result = new StringBuilder(); FtpWebRequest reqFTP; try { reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + FolderName + "/")); reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd); reqFTP.Method = WebRequestMethods.Ftp.ListDirectory; WebResponse response = reqFTP.GetResponse(); StreamReader reader = new StreamReader(response.GetResponseStream()); string line = reader.ReadLine(); while (line != null) { result.Append(line); result.Append("\n"); line = reader.ReadLine(); } // to remove the trailing '\n' result.Remove(result.ToString().LastIndexOf('\n'), 1); reader.Close(); response.Close(); return result.ToString().Split('\n'); } catch (Exception ex) { downloadFiles = null; return downloadFiles; } } //从客户端上传文件到FTP上 private void UploadFtp(HttpPostedFile sFilePath, string filename, string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd) { //获取的服务器路径 //FileInfo fileInf = new FileInfo(sFilePath); FtpWebRequest reqFTP; reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + FolderName + "/" + filename)); reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd); reqFTP.KeepAlive = false; reqFTP.Method = WebRequestMethods.Ftp.UploadFile; reqFTP.UseBinary = true; reqFTP.ContentLength = sFilePath.ContentLength; //设置缓存 int buffLength = 2048; byte[] buff = new byte[buffLength]; int contentLen; using (Stream fs = sFilePath.InputStream) { using (Stream strm = reqFTP.GetRequestStream()) { contentLen = fs.Read(buff, 0, buffLength); while (contentLen != 0) { strm.Write(buff, 0, contentLen); contentLen = fs.Read(buff, 0, buffLength); } strm.Close(); } fs.Close(); } } //创建目录 private void CreateDirectory(string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd) { //创建日期目录 try { FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + FolderName)); reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd); reqFTP.KeepAlive = false; reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory; FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); } catch { ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('系统忙,请稍后再 试!');location.href=location.href;</script>"); } } //检查日期目录和文件是否存在 private static Regex regexName = new Regex(@"[^\s]*$", RegexOptions.Compiled); private bool CheckFileOrPath(string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd) { //检查一下日期目录是否存在 FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/")); reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd); reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails; Stream stream = reqFTP.GetResponse().GetResponseStream(); using (StreamReader sr = new StreamReader(stream)) { string line = sr.ReadLine(); while (!string.IsNullOrEmpty(line)) { GroupCollection gc = regexName.Match(line).Groups; if (gc.Count != 1) { throw new ApplicationException("FTP 返回的字串格式不正确"); } string path = gc[0].Value; if (path == FolderName) { return true; } line = sr.ReadLine(); } } return false; } }
二维码又称QR Code,QR全称Quick Response,是一个近几年来移动设备上超流行的一种编码方式,它比传统的Bar Code条形码能存更多的信息,也能表示更多的数据类型:比如:字符,数字,日文,中文等等。这两天学习了一下二维码图片生成的相关细节,觉得这个玩意就是一个密码算法,在此写一这篇文章 ,揭露一下。供好学的人一同学习之。
Android开发学习:开发过程中会需要对App应用进行判断是否是首次启动,或安装后第一次打开应用。
package com.zhengdecai.isfirststart; import android.app.Activity; import android.content.SharedPreferences; import android.content.SharedPreferences.Editor; import android.os.Bundle; import android.util.Log; import android.view.Menu; import android.widget.TextView; import android.widget.Toast; /** * 首次启动判断 * * @author 郑德才 * */ public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); TextView isFisrt =(TextView) findViewById(R.id.isFisrt); SharedPreferences sharedPreferences = this.getSharedPreferences( "share", MODE_PRIVATE);//此处表示该应用程序专用 boolean isFirstRun = sharedPreferences.getBoolean("isFirstRun", true);//此处表示如果key "isFirstRun"对应的value没有值则默认为true,否则就把对应的value取出赋值给变量isFirstRun Editor editor = sharedPreferences.edit(); editor.putBoolean("isFirstRun", false); //此处表示putBoolean(key, value),将value写入对应的key,而且是一一对应的 editor.commit(); //将isFirstRun写入editor中保存 if (isFirstRun) { Log.d("debug", "第一次运行"); editor.putBoolean("isFirstRun", false); Toast.makeText(this, "是第一次运行程序喔!", Toast.LENGTH_SHORT).show(); isFisrt.setText("是第一次运行程序喔!"); editor.commit(); } else { Log.d("debug", "不是第一次运行"); Toast.makeText(this, "已经不是第一次运行程序了!", Toast.LENGTH_SHORT).show(); isFisrt.setText("已经不是第一次运行程序了!"); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }
Android开发学习
Android开发中,通过应用程序发送短信验证码,并监听短信内容把短信验证码自动填充到文本框中,通过BroadcastReceiver检测接收的短信内容(6位数字的验证码)
Android开发学习
Android开发中,对应用程序创建手机桌面快捷方式
Android开发学习
Android开发中,需要用到模仿QQ联系人的菜单展开收缩效果
package com.zhengdecai.awaveinfo;
import android.app.Activity;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
以前听说过PowerDesigner可以和数据库连接,根据在PowerDesigner创建的数据模型创建表、触发器、存储过程到数据库中。也可以将已有的数据库导出到PowerDesigner中为数据模型。今天做了一下测试,发现确实很简单,现在操作步骤与大家分享:
0、准备工作
先在SQL Server中创建一数据库,以供测试用。
Create database test
1、 根据在PowerDesigner创建的数据模型创建表、触发器、存储过程到数据库中
1)打开PowerDesigner ,建立一个物理数据模型
在做Mobile终端的Website开发中,我遇到一个很懊恼的问题。
在IOS中的Safari浏览器有的不能正确解释出Javascript中的 new Date('2013-10-21') 的日期对象。
但是在IOS版本里面的Safari解释new Date('2013-10-21') 就不正确,在IOS的Safari中返回的永远会是"Invalid Date"。
后来我在网上查找了资料,原来是低版本的Safari解释new Date('2013-10-21')这个对象不一样,在IOS中的Safari不支持这种写法,
JavaScript获取网页高度包括(网页可见区域高,屏幕分辨率的高,屏幕可用工作区高度,JavaScript获取浏览器高度,JavaScript获取屏幕高度)等等,各种高度,本文详细整理了一些,需要了解的朋友可以参考下
网页可见区域宽: document.body.clientWidth
网页可见区域高: document.body.clientHeight
网页可见区域宽: document.body.offsetWidth (包括边线的宽)
网页可见区域高:
document.body.offsetHeight (包括边线的高)
网页正文全文宽: document.body.scrollWidth
网页正文全文高: document.body.scrollHeight
网页被卷去的高: document.body.scrollTop
网页被卷去的左: document.body.scrollLeft
网页正文部分上: window.screenTop
网页正文部分左:
window.screenLeft
屏幕分辨率的高: window.screen.height
屏幕分辨率的宽:
window.screen.width
屏幕可用工作区高度: window.screen.availHeight
屏幕可用工作区宽度:
window.screen.availWidth
Android开发学习
Android开发中,自动显示搜索历史成列表
jQuery实现元素的上下移动示例代码
<html>
<head>
<title>
</title>
<style type="text/css">
table { background:#949494; width:400px; line-height:20px;} td { border-right:1px
solid gray; border-bottom:1px solid gray; }
</style>
<script src="jquery.js" type="text/javascript">
</script>