Roller 是一个Struts + Hibernate 的 Java 开源实现，正好拿来研究研究，首先就是要把它安装起来了，整理
了一下步骤和注意事项，记录如下：
准备需要的基本环境：
3. Roller 2.0
4. MySQL 5.0.16
首先，确保MySQL开启了对InnoDB和UTF-8的支持，在my.ini中开启下面的参数：
[mysqld]
default-storage-engine=innodb
default-character-set=utf8
启动好MySQL待用...D:\MySQL\mysqld.exe --console --datadir=I:\MyData\Data
假设我的Tomcat主目录为：$CATALINA_HOME=D:\J2EE_HOME\AppServer\Tomcat
把压缩的Roller文件 roller-2.0-incubating.tar 解开...
并放到$CATALINA_HOME\WebApp\roller下面...如图...
开始建立MySQL中的数据库：
I:> CD %CATALINA_HOME%\webapps\roller\WEB-INF\dbscripts\mysql
I:> mysql -u root -p
password: *****
mysql> create database roller;
mysql> grant all on roller.* to scott@'%' identified by 'tiger';
mysql> grant all on roller.* to scott@'localhost' identified by 'tiger';
mysql> use roller;
mysql> source createdb.sql
mysql> quit
在 $CATALINA_HOME\conf\Catalina\localhost 中放置Roller的Web Application的部署
配置档案 roller.xml，内容如下：
<Context path="/roller" docBase="${catalina.home}/webapps/roller" debug="0">
<Realm className="org.apache.catalina.realm.JDBCRealm"
driverName="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/roller?autoReconnect=true&useUnicode=true&characterEncoding=utf-8&mysqlEncoding=utf8"
connectionName="scott"
connectionPassword="tiger"
userTable="rolleruser"
userNameCol="username"
userCredCol="passphrase"
userRoleTable="userrole"
roleNameCol="rolename" debug="0" />
<Resource name="jdbc/rollerdb" auth="Container" type="javax.sql.DataSource" />
<ResourceParams name="jdbc/rollerdb">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>com.mysql.jdbc.Driver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:mysql://localhost:3306/roller?autoReconnect=true&useUnicode=true&characterEncoding=utf-8&mysqlEncoding=utf8</value>
</parameter>
<parameter>
<name>username</name>
<value>scott</value>
</parameter>
<parameter>
<name>password</name>
<value>tiger</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>20</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>3</value>
</parameter>
<parameter>
<name>removeAbandoned</name>
<value>true</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>3000</value>
</parameter>
</ResourceParams>
<!--//
To enable email notification of comments: uncomment the resouce below,
set your mailhost, and make sure you have mail.jar and activation.jar
in <tomcat>/common/lib.
//-->
<!--//
<Resource name="mail/Session" auth="Container" type="javax.mail.Session"/>
<ResourceParams name="mail/Session">
<parameter>
<name>mail.smtp.host</name>
<value>mailhost.example.com</value>
</parameter>
</ResourceParams>
//-->
</Context>
完成上面的设定后，接下来，我们修改一下Tomcat中的Connector的设定，使它能够支持UTF-8的编码，
打开 $CATALINA_HOME\conf\server.xml，做如下修改...
<!-- Define a non-SSL Coyote HTTP/1.1 Connector on port 8080 -->
<Connector port="80"
URIEncoding="UTF-8"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
debug="0" connectionTimeout="20000"
disableUploadTimeout="true" />
到这里，基本上Tomcat相关的设定就完成了，因为Roller Blog可以支持上传附件和全文检索等功能，
所以，我们还有一个设定的动作...在 $CATALINA_HOME\WebApp\roller 中新建下面层次的目录：
$CATALINA_HOME\WebApp\roller
|
+---data
|
+---search-index
+---uploads
找到 $CATALINA_HOME\webapps\roller\WEB-INF\classes\roller.properties ，做如下修改：
# The directory in which Roller will upload files
# uploads.dir=${user.home}/roller_data/uploads
uploads.dir=${TOMCAT_HOME}/webapps/roller/data/uploads
# force Roller to recreate the entire search index)
# search.index.dir=${user.home}/roller_data/search-index
search.index.dir=${TOMCAT_HOME}/webapps/roller/data/search-index
好了，大功告成，启动Tomcat，可以运行Roller了！
