Apache Tomcat/6.0.39如何配置连接mysql,JDBC:mysql-connector-java-5.1.30-bin.jar-成功连接心得
http://tomcat.apache.org/tomcat-6.0-doc/jndi-datasource-examples-howto.html
前提:开启TOMCAT,MYsql
MySQL DBCP Example
0. Introduction
Versions of MySQL and JDBC drivers that have been reported to work:
MySQL 3.23.47, MySQL 3.23.47 using InnoDB,, MySQL 3.23.58, MySQL 4.0.1alpha
Connector/J 3.0.11-stable (the official JDBC Driver)
mm.mysql 2.0.14 (an old 3rd party JDBC Driver)
Before you proceed, don't forget to copy the JDBC Driver's jar into $CATALINA_HOME/lib.
这句话的意思是说,在开始下面的工作之前必须将JDBC驱动jar包(我用的是mysql-connector-java-5.1.30-bin.jar),放到G:\apache-tomcat-6.0.39-windows-x86\apache-tomcat-6.0.39/lib目录下,另外我自己昨天捣鼓的时候设置过一些环境变量,不知道会不会有影响,通过下面的测试发现,没有影响。(我的环境变量CATALINA_HOME值设置为G:\apache-tomcat-6.0.39-windows-x86\apache-tomcat-6.0.39)
1. MySQL configuration
Ensure that you follow these instructions as variations can cause problems.
Create a new test user, a new database and a single test table. Your MySQL user must have a password assigned. The driver will fail if you try to connect with an empty password.
mysql> GRANT ALL PRIVILEGES ON *.* TO javauser@localhost
-> IDENTIFIED BY 'javadude' WITH GRANT OPTION;
mysql> create database javatest;
mysql> use javatest;
mysql> create table testdata (
-> id int not null auto_increment primary key,
-> foo varchar(25),
-> bar int);
Note: the above user should be removed once testing is complete!
Next insert some test data into the testdata table.
mysql> insert into testdata values(null, 'hello', 12345);
Query OK, 1 row affected (0.00 sec)
mysql> select * from testdata;
+----+-------+-------+
| ID | FOO | BAR |
+----+-------+-------+
| 1 | hello | 12345 |
+----+-------+-------+
1 row in set (0.00 sec)
mysql>
2. Context configuration
Configure the JNDI DataSource in Tomcat by adding a declaration for your resource to your Context.
For example:
context.xml在G:\apache-tomcat-6.0.39-windows-x86\apache-tomcat-6.0.39\conf目录下(我的笔记本上)
<Context>
<!-- maxActive: Maximum number of database connections in pool. Make sure you
configure your mysqld max_connections large enough to handle
all of your db connections. Set to -1 for no limit.
-->
<!-- maxIdle: Maximum number of idle database connections to retain in pool.
Set to -1 for no limit. See also the DBCP documentation on this
and the minEvictableIdleTimeMillis configuration parameter.
-->
<!-- maxWait: Maximum time to wait for a database connection to become available
in ms, in this example 10 seconds. An Exception is thrown if
this timeout is exceeded. Set to -1 to wait indefinitely.
-->
<!-- username and password: MySQL username and password for database connections -->
<!-- driverClassName: Class name for the old mm.mysql JDBC driver is
org.gjt.mm.mysql.Driver - we recommend using Connector/J though.
Class name for the official MySQL Connector/J driver is com.mysql.jdbc.Driver.
-->
<!-- url: The JDBC connection url for connecting to your MySQL database.
-->
<Resource name="jdbc/TestDB" auth="Container" type="javax.sql.DataSource"
<!--TestDB是我们自己在webapps下面建立的目录-->
maxActive="100" maxIdle="30" maxWait="10000"
username="javauser" password="javadude" driverClassName="com.mysql.jdbc.Driver"
<!--username="javauser" password="javadude"是我们自己在创建数据库时设置的用户名和密码-->
url="jdbc:mysql://localhost:3306/javatest"/>
<!--连接url="jdbc:mysql://localhost:3306/javatest"是很关键的,javatest是我们建立的数据库名称,3306是连接的端口号,我的是8080,所以修改成8080才能连接成功--> 经过再三测试还是要3306才对
</Context>
3. web.xml configuration
Now create a WEB-INF/web.xml for this test application.
这里原文说的不是很明确,具体操作是在TestDB目录下新建WEB-INF,然后新建web.xml,添加下面的内容。
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<description>MySQL Test App</description>
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/TestDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
4. Test code
Now create a simple test.jsp page for use later.
在TestDB目录下新建test.jsp,添加下面的内容
<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<sql:query var="rs" dataSource="jdbc/TestDB">
select id, foo, bar from testdata
</sql:query>
<html>
<head>
<title>DB Test</title> <!--网页显示的标题-->
</head>
<body>
<h2>Results</h2><!--网页显示的内容-->
<c:forEach var="row" items="${rs.rows}">
Foo ${row.foo}<br/><!--查询数据库内容显示出来-->
Bar ${row.bar}<br/><!--查询数据库内容显示出来-->
</c:forEach>
</body>
</html>
That JSP page makes use of JSTL's SQL and Core taglibs. You can get it fromApache Tomcat Taglibs - Standard Tag Library project — just make sure you get a 1.1.x release. Once you have JSTL, (解压后在\jakarta-taglibs-standard-1.1.1\lib)copy jstl.jar and standard.jar to your web app's WEB-INF/lib directory.
Once deployed, point a browser at http://localhost:8080/DBTest/test.jsp to view the fruits of your hard work.
Apache Tomcat/6.0.39如何配置连接mysql,JDBC:mysql-connector-java-5.1.30-bin.jar-成功连接心得的更多相关文章
- 创建Dynamic Web Project时 显示最新Apache Tomcat 8.0 的方法
创建Dynamic Web Project时 显示最新Apache Tomcat 8.0 等的方法 解决办法如下: 第一步:eclipse菜单help->eclipse marketplac ...
- Server Library [Apache Tomcat 7.0] unbound解决方案
问题描述: 当在MyEclipse中导入高版本Eclipse的[Eclipse Dynamic Web]项目后,会发现其Java Build Path(选定项目->Alt+Enter即可打开Pr ...
- Target runtime Apache Tomcat v6.0 is not defined
在工程目录下的.settings文件夹里,打开org.eclipse.wst.common.project.facet.core.xml文件,其内容是: <?xml version=" ...
- Target runtime Apache Tomcat v7.0 is not defined.
打开项目,找到.settings--->org.eclipse.wst.common.project.facet.core 修改这个文件中: <?xml version="1.0 ...
- Java compiler level does not match the version of the installed Java project facet. springmvc1 和 Target runtime Apache Tomcat v7.0 is not defined.
Java compiler level does not match the version of the installed Java project facet.springmvc1 : Targ ...
- Target runtime Apache Tomcat v6.0 is not defined. phyy Unknown Faceted Project Problem
Description Resource Path Location TypeTarget runtime Apache Tomcat v6.0 is not defined. phyy Unknow ...
- Target runtime Apache Tomcat v8.0 is not defined.
Target runtime Apache Tomcat v8.0 is not defined. Window-Preference-MyEclipse-Targeted Runtimes,选择存在 ...
- 【eclipse】Target runtime Apache Tomcat v7.0 is not defined解决
在eclipse中导入项目时提示Target runtime Apache Tomcat v7.0 is not defined, 解决方法:右键项目--properties--targeted ru ...
- 发现eclipse红叉,查看markers发现Target runtime Apache Tomcat 6.0 is not defined
1.导入以前的项目(Markers中注意查看,就在console选项卡旁边),报以下错误,但不影响操作: Description Resource Path Location TypeTarget r ...
随机推荐
- python从字符串解析方法名
方法如下 import requests func_name = 'get' fn_obj = getattr(requests,func_name) fn_obj('http://www.baidu ...
- 词云wordcloud类介绍&python制作词云图&词云图乱码问题等小坑
词云图,大家一定见过,大数据时代大家经常见,我们今天就来用python的第三方库wordcloud,来制作一个大数据词云图,同时会降到这个过程中遇到的各种坑, 举个例子,下面是我从自己的微信上抓的微信 ...
- spring boot打jar包发布
artifactId 是即将打包的包的名称 version 是即将打包的版本号 packaging 是即将打包的格式,这里讲的是jar包 终端输入命令: mvn clean install 然后在ta ...
- phpmyadmin 定位表
一个数据库,里面有几百个表.如何快速定位需要的表呢? 关键字查询,就好了! 很方便,很实用. 建表的时候,相关性比较强的,就用同一个前缀.
- 搜索:ElasticSearch OR MySQL?
背景 我们开发一般的企业级Web应用,其实从本质上来说,都是对数据的增删查改进行各个维度的包装.所以说,不管你的程序如何开发,基本上,都离不开数据本身.那么,在开发企业级应用的过程中,很多同学一定遇到 ...
- CTO详细讲解海量日志处理ELK
ELK实时日志分析平台之Elasticsearch简介 Elasticsearch是一个高度灵活的开源全文检索和分析引擎.它能够迅速(几乎是实时地)地存储.查找和分析大规模数据.通常被用在有复杂的搜索 ...
- Codeforces 454D - Little Pony and Harmony Chest
454D - Little Pony and Harmony Chest 思路: 状压dp,由于1的时候肯定满足题意,而ai最大是30,所以只要大于等于59都可以用1替换,所以答案在1到59之间 然后 ...
- 缓存地图 ArcGIS ——Local compact and exploded tile cache layer for WPF API
ArcGISArcGIS 主页 特色 合约 图库 地图 组 帮助 我的内容 我的组织 登录 我的个人资料 帮助 管理员指南 登出 0 搜索全部内容 搜索地图 搜索图层 搜索应用程序 搜索工具 搜索 ...
- English trip -- VC(情景课)3 D Reading
xu言: 感觉睡眠尽量还是要保证7+小时,才能让自己的脑袋更清醒一些... Read 阅读 My Family My name is Gloria. This is my family . This ...
- 3-23Agile Web Development,3-24(chapter: 6)
第2章 Instant Gratification 复习 和 练习第一章,新建rails web页面. 重点: 知道了类,方法,实例变量 在rails是怎么用的. rails generate con ...