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Package cn.ubibi.wsblog.utils; Import Java.io.unsupportedencodingexception;import Java.math.BigInteger; public class Base58 {private static final char[] ALPHABET = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwx YZ ". ToCharArray ();

Recent project a feature needs to be based on IP address from Third-party interface to obtain a detailed geographical location, from the Internet to find a lot of examples, the main interface with Sina, Taobao, Tencent. Try Taobao, if it is a small

Last blog said how to build a HBase environment, today to talk about how to use the HBase client API to manipulate the data in HBase. Create a project First create a Maven project, and then add the dependencies for the HBase client API, as follows:

Hey, it's been a long time since I haven't written a thing, for the reason of work, contact the bottom ORM framework of the company's own development, and find that the framework refers to the simplejdbctemplate in hibernate when invoking JDBC

Copy Code code as follows: Package com.homer.sms; Import Java.sql.Date;Import Java.text.SimpleDateFormat; Import android.app.Activity;Import Android.database.Cursor;Import android.database.sqlite.SQLiteException;Import

First look at the effect chart: Package wuwang.tools.utils; Import Java.io.File; Import Java.io.FileInputStream; Import java.io.FileNotFoundException; Import java.io.IOException; Import Java.text.DecimalFormat; Import

purpose of the Github:https://github.com/zhaikaishun/zookeeper_tutorial curator framework Homepage Introduction is guava are to Java what curator are to Xookeeper, in order to better implement Java operation Zookeeper Server, later appeared curator

Java connection MySQL　　Protected final static String Db_driver = "Com.mysql.jdbc.Driver";Protected final String Db_url = "Jdbc:mysql://localhost:3306/melancholy?characterencoding=utf8&usessl=true";Protected final String Db_user =

ObjectiveTime flies, engaged in Android system development has been two years, always want to write something to comfort themselves. Thinking for a very long time always can not write, think there is no good writing. Now the final decision to write

1.HttpServletBrief introductionHttpServletgenerates HTTP response results for the response based on the HTTP request made by the customer. HttpServlet must first read the contents of the HTTP request. The servlet container is responsible for

The broadcast receiver (Broadcastreceiver), as its name implies, is used to receive broadcasts from systems and applications. It is used to receive broadcast Intent, and broadcast Intent is sent by calling Context.sendbroadcast (),

The following is a pure JDBC Connection Tool: publicstaticfinalStringDBDRIVERcom. microsoft. sqlserver. jdbc. SQLServerDriver; connector: sqlserver: 10.81.35.35: 1433; databaseNameCompany; publicstaticfinalStringDBUSER The following is a pure JDBC

This blog is mainly about Java in the POI read Excel, and Excel version includes: 2003-2007 and 20,102 versions, that is, Excel suffix named: xls and xlsx.Read Excel and MySQL Related: Java POI Technology read Excel data to MySQLYou can also read

PrefaceAny system, even if it does a large, there will be a variety of unexpected situations. Although you can say that I have done all the accident on the software level, but in case of hardware problems or physical aspects of the problem, I am

ContentProvider always need to be used in conjunction with Contentresolver, the relationship between them is:The context provides the Getcontentresolver () method, which indicates that components such as activity, service, and so on can get

Recently, just write a small demo record:Manifest file: Dblite:Package Com.gyz;import Android.content.context;import Android.database.sqlite.sqlitedatabase;import Android.database.sqlite.sqliteopenhelper;public class Dblite extends

When using SQLite, we usually encapsulate a SQLiteOpenHelper class directly and then operate the class. So here I will mainly talk about how to use SQLiteOpenHelper. Package com. android. liu. sqlite; Import android. content. ContentValues;Import

An android network application requires you to use your own webview to access the web site. After successful remote logon, the cookie is written to your mobile phone and reserved for automatic logon. I found a lot of information. It is found that

Note:: For installation instructions on the Microsoft SQL Server 2000 JDBC driver, see Microsoft SQL Server 2000 Driver for JDBC Installation Guide. After the Microsoft SQL Server 2000 JDBC driver is installed, you can connect to the database from

Package practical; Import java. security. Security;Import java. util. properties; Import javax. Mail. message;Import javax. Mail. messagingexception;Import javax. Mail. passwordauthentication;Import javax. Mail. Session;Import javax. Mail. Transport;