linux下tomcat连接mysql数据库
一.下载安装jdk,并配置Java环境
官网下载地址:http://www.oracle.com/technetwork/java/javase/downloads/index.html
以jdk-7u79-linux-i586.tar.gz为例:
将jdk-7u79-linux-i586.tar.gz解压并放在/usr/local/下:
解压方法(tar -zxvf jdk-7u79-linux-i586.tar.gz)以下类似
配置环境变量:
在 /etc/profile添加一下语句:
export JAVA_HOME=/usr/local/jdk1.7.0_79
export CLASS_PATH=/usr/local/jdk1.7.0_79/lib
export PATH=$JAVA_HOME/bin:$PATH
保存退出 运行命令 source /etc/profile 使配置立即生效
看Java配置是否正确通过Java命令,如果系统识别该命令说明配置成功!
二.下载安装tomcat
官网下载地址:http://tomcat.apache.org/
以为例:apache-tomcat-8.5.0.tar.gz为例:
将apache-tomcat-8.5.0.tar.gz解压并重命名为tomcat并放在/usr/local/下:
配置环境变量:
在 /etc/profile添加一下语句:
export TOMCAT_HOME=/usr/local/tomcat
保存退出 运行命令 source /etc/profile 使配置立即生效
启动tomcat服务器
cd /usr/local/tomcat/bin
./startup.sh
出现下面的语句则启动tomcat成功:
Using CATALINA_BASE: /usr/local/tomcat
Using CATALINA_HOME: /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME: /usr/local/jdk1.7.0_79
Using CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Tomcat started.
在浏览器中输入
http://localhost:8080/(如果不是本机,则输入对应的ip地址)
测试出现tomcat页面则测试成功
3.下载 mysql-connector-java
官网下载地址:http://dev.mysql.com/downloads/connector/j/
以为例:mysql-connector-java-5.1.25.tar.gz为例:
将mysql-connector-java-5.1.25.tar.gz解压并放在/usr/local/下:
cd mysql-connector-java-5.1.25
cp mysql-connector-java-5.1.25-bin.jar /usr/local/tomcat/lib
重启tomcat
cd /usr/local/tomcat/bin
./shutdown.sh
./startup.sh
4.测试tomcat是否能连接Mysql
cd /usr/local/tomcat/webapps
mkdir test
touch index.jsp
vim index.jsp
编辑如下内容:
<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%@ page import="java.naming.*" %>
<%@ page import="java.sql.*" %>
<html>
<head>
<title>My first DB</title>
</head>
<body>
<h1>
<%
try {
//加载驱动
Class.forName("com.mysql.jdbc.Driver");
//建立连接 注:下面的test为数据库名字,root为mysql用户名 123456 为root的密码
Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","123456");
//创建状态
Statement state=con.createStatement();
//插入
//String sql="insert into student values('id','age'),('2','20')";
//state.executeUpdate(sql);
//更新
//String sql1="update student set id='001' where name='liu'";
// state.executeUpdate(sql1);
//修改
//String sql3="update student set name='liu' where id='2'";
//state.executeUpdate(sql3);
//查询
//String sql2="select id,name from student where id='1'";
String sql2="select * from student";
ResultSet rs=state.executeQuery(sql2);
while(rs.next()){
String id=rs.getString("id");
String name=rs.getString("name");
out.println("id:"+id+" "+"name:"+name+"<br>");
}
out.println("success..."+"<br>");
state.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
%>
</h1>
</body>
</html>
在浏览器中输入
http://localhost:8080/test/index.jsp
出现类似
id:2 name:Tom
id:3 name:Huhu
success...
表示成功!
注若是没有安装数据库可参考另一篇文章 http://www.cnblogs.com/liuzhennan/articles/5319280.html