RHEL4系统中JDK+Tomcat开发环境的简单实现

时间：2007-06-14 来源：一路狂笑

RHEL4系统中JDK+Tomcat开发环境的简单实现 2007-06-12 kenthy#qingdaonews.com ######################################
系统环境：RHEL4 [ 2.6.9-5.EL ]
软件版本：
jdk-1_5_0_05-linux-i586.bin
jakarta-tomcat-5.5.9.tar.gz
jakarta-tomcat-5.5.9-admin.tar.gz
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一、安装jdk-1_5_0_05-linux-i586.bin
    1、解包安装
# mv jdk-1_5_0_05-linux-i586.bin /usr/local/
# cd /usr/local
# chmod +x jdk-1_5_0_05-linux-i586.bin
# ./jdk-1_5_0_05-linux-i586.bin     2、设置环境
# ln -s /usr/local/jdk-1.5.0_05 /usr/local/jdk
# vi /etc/profile //添加以下内容
     JAVA_HOME=/usr/local/jdk
     CLASSPATH=$JAVA_HOME/lib/dt.jar:$JAVAHOME/lib/tools.jar:$CLASSPATH
     PATH=$PATH:$JAVA_HOME/bin
     export JAVA_HOME CLASSPATH PATH
# `tail -4 /etc/profile` //执行上述设置的四行命令
# ln -sf /usr/local/java/jdk1.5.0_05/bin/java /usr/bin/ # ln -sf /usr/local/java/jdk1.5.0_05/bin/javac /usr/bin/     3、验证jdk安装
# java -version   //查看java版本
# vi HelloWorld.java //创建简单的java程序，内容如下
     import java.io.*;
     public class HelloWorld {
public static void main( String args[] ) {
      System.out.println("HelloWorld!!");
}
     }
# javac HelloWorld.java //测试javac的编译功能
# java HelloWorld //测试java程序的运行

二、安装tomcat
    1、解包安装并设置环境
# tar zxvf jakarta-tomcat-5.5.9.tar.gz -C /usr/local/
# tar zxvf jakarta-tomcat-5.5.9-admin.tar.gz -C /usr/local/
# ln -s /usr/local/jakarta-tomcat-5.5.9 /usr/local/tomcat
# export CATALINA_HOME=/usr/local/tomcat //设置CATALINA_HOME变量并用export导出
# echo 'export CATALINA_HOME=/usr/local/tomcat' >> /etc/profile

    2、添加管理员用户
# vi /usr/local/tomcat/conf/tomcat-users.xml //添加一行设置，增加管理员用户kenthy
    <user username="kenthy" password="123456" roles="admin,manager"/>

    3、启动服务并访问测试
# ln -s /usr/local/tomcat/bin/shutdown.sh /usr/bin/tomcat-down
# ln -s /usr/local/tomcat/bin/startup.sh /usr/bin/tomcat-up
# tomcat-up //启动tomcat服务
在浏览器里访问http://server_address:8080/   //若看到tomcat欢迎界面则启动正常
通过欢迎界面左侧栏里的链接可以测试jsp及servlet基本功能
访问http://server_address:8080/admin/可以使用kenthy登陆进行管理

    4、测试简单的自建jsp页面
# mkdir /usr/local/tomcat/webapps/accp
# vi /usr/local/tomcat/webapps/accp/showtime.jsp
     <%@page language="java" import="java.util.*"%>
     Now Time is : <%out.println(new Date());%>
    在浏览器里访问http://server_address:8080/accp/showtime.jsp   //若显示系统时间则正常

    5、测试简单的自建Servlet
# cd /usr/loca/tomcat/webapps
# cp -rf servlets-examples/WEB-INF accp/
# cd accp/WEB-INF/classes
# rm -rf *.*                //删除多余的文件
# vi HelloServlet.java    //创建servlet源文件
     import java.io.*;
     import javax.servlet.*;
     import javax.servlet.http.*;
     public class HelloServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws IOException, ServletException
{
      response.setContentType("text/html");
      PrintWriter out = response.getWriter();
      out.println("<h1>Hello Servlet World!</h1>");
}
     }
# javac HelloServlet.java
# vi ../web.xml     //修改web.xml添加映射
     <?xml   version="1.0"   encoding="UTF-8"?>
     <!DOCTYPE   web-app   PUBLIC   "-//Sun   Microsystems,   Inc.//DTD   Web   Application   2.2//EN"        "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
     <web-app>
<servlet>
      <servlet-name>HelloServlet</servlet-name>
      <servlet-class>HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
      <servlet-name>HelloServlet</servlet-name>
      <url-pattern>/servlet/*</url-pattern>
</servlet-mapping>
     </web-app>
# tomcat-down ; tomcat-up   //重启tomcat服务程序     在浏览器里访问http://server_address:8080/accp/servlet/HelloServlet //若显示"Hello Servlet World!"则自建servlet正常