mysql数据库已经安装配置测试成功，请不要怀疑这个问题。
光盘上的代码，最有可能出在连接数据库那个类。



The following error occurred in your AddressBook Sample Application:

--------------------------------------------------------------------------------

IOException: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(DriverManager.java:525) at java.sql.DriverManager.getConnection(DriverManager.java:171) at addressbook.model.DbUtil.connectToDb(DbUtil.java:25) at addressbook.model.DbUtil.connectToDb(DbUtil.java:34) at addressbook.model.AddressBookBean.search(AddressBookBean.java:72) at addressbook.tags.DisplayTag.doEndTag(DisplayTag.java:33) at org.apache.jsp.display_jsp._jspx_meth_app_display_0(display_jsp.java:260) at org.apache.jsp.display_jsp._jspService(display_jsp.java:157) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:474) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1056) at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:388) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:231) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1158) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415) at javax.servlet.http.HttpServlet.service(HttpServlet.java:709) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683) at java.lang.Thread.run(Thread.java:595) ** END NESTED EXCEPTION **

接着上面贴：
数据库的类是：

package addressbook.model;

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 = "987654321";

public DbUtil() {

}

public static java.sql.Connection connectToDb(String hostName, String databaseName)throws Exception
{
Connection connection=null;
String connName = dbUrl + "127.0.0.1"+":3306"+"/"+"shujuku";
Class.forName(driverName).newInstance();
connection = DriverManager.getConnection(connName,user,password);
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", "addressbooksample"));
}

}

mysql数据库相关的表也建好了。