当前位置:我的异常网» Java Web开发 » jsp连接Mysql数据库出现有关问题，

jsp连接Mysql数据库出现有关问题，

www.myexceptions.net  网友分享于：2013-01-16  浏览：19次

求助：jsp连接Mysql数据库出现问题，，，，，，

jsp连接Mysql数据库出现问题。

我的测试程序是：

import   java.io.*;

import   java.sql.*;

public   class   DbUtil   {

static   String   driverName= "com.mysql.jdbc.Driver ";

static   String   dbUrl= "jdbc:mysql:// ";

static   String   user   = "root ";

static   String   password   = "12345678 ";

public   DbUtil()   {   }

public   static   java.sql.Connection   connectToDb(String   hostName,   String     databaseName)throws   Exception

{

Connection   connection=null;

String   connName   =   dbUrl   +   hostName+ ":3306 "+ "/ "+databaseName;

Class.forName(driverName).newInstance();

connection   =   DriverManager.getConnection(connName,user,password);

System.out.print( "Connect   to   DB   OK... ");

return   connection;

}

public   static   java.sql.Connection   connectToDb(String   databaseName)throws   Exception{

return(connectToDb( "localhost ",   databaseName));

}

public   static   java.sql.Connection   connectToDb()throws   Exception{

return(connectToDb( "localhost ",   "addressbook "));

}

public   static   void   main(String[]   args)throws   Exception{

try{

DbUtil   db   =   new   DbUtil();

db.connectToDb();

}catch(Exception   e){

e.printStackTrace();

}

}

}

运行时出现如下错误：

java.sql.SQLException:   Communication   link   failure:   java.io.IOException,   underlying   cause:   Unexpected   end   of   input   stream

**   BEGIN   NESTED   EXCEPTION   **

java.io.IOException

MESSAGE:   Unexpected   end   of   input   stream

STACKTRACE:

java.io.IOException:   Unexpected   end   of   input   stream

at   com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:1096)

at   com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:626)

at   com.mysql.jdbc.Connection.createNewIO(Connection.java:1562)

at   com.mysql.jdbc.Connection. (Connection.java:491)

at   com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)

at   java.sql.DriverManager.getConnection(Unknown   Source)

at   java.sql.DriverManager.getConnection(Unknown   Source)

at   addressbook.model.DbUtil.connectToDb(DbUtil.java:25)

at   addressbook.model.DbUtil.connectToDb(DbUtil.java:36)

at   addressbook.model.DbUtil.main(DbUtil.java:42)

**   END   NESTED   EXCEPTION   **

at   com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:699)

at   com.mysql.jdbc.Connection.createNewIO(Connection.java:1562)

at   com.mysql.jdbc.Connection. (Connection.java:491)

at   com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)

文章评论