Grails自帶的HSQLDB數(shù)據(jù)庫,但是更習(xí)慣使用MySql.便把數(shù)據(jù)庫改成MySql的.呵,很簡單,只是改的過程中鬧了點(diǎn)小笑話,都怪自己馬虎啊.

1.先下載MySql的驅(qū)動, http://www.mysql.com/products/connector/j/

2.將MySql的Jar包放到項(xiàng)目的lib文件夾下

3.修改grails-app\conf文件夾下的DataSource.groovy文件的DataSource:

dataSource {
    pooled = false
    driverClassName = "com.mysql.jdbc.Driver" //將原來的HSQLDB的驅(qū)動名改成MySql的,一定要注冊變量的大小寫啊,我開始就是將driverClassName的大小寫搞錯(cuò)了,結(jié)果找了半天錯(cuò)誤,哈.
    username = "puras"  //MySql的用戶名
    password = "123456"  //相應(yīng)的密碼
}

4.修改DataSource.groovy文件:

development {
        dataSource {
            dbCreate = "update" // one of 'create', 'create-drop','update'
            url = "jdbc:mysql://localhost/ibmhp?useUnicode=true&characterEncoding=UTF8 " //將URL改成MySql的,與Java的一樣

        }
    }

5.成功啦~~~~

PS:公司的項(xiàng)目一直用Oracle,結(jié)果今天想用MySql,連接字符串和驅(qū)動怎么寫都不記得了...汗啊