我有这个用.groovy文件写的groovy脚本:
import groovy.sql.Sql;
def doit() {
Class.forName('oracle.jdbc.driver.OracleDriver'); // If i skip this line it throws SQLException no driver registered for URL
def db = [url:'jdbc:oracle:thin:/@localhost:1555:AVDB', user:'sys as sysdba', password:'secret',driver:'oracle.jdbc.driver.OracleDriver'];
def sql = Sql.newInstance(db.url, db.user, db.password, db.driver) ;
sql.execute 'CREATE USER RandomUser identified by Secret123';
}
我通过以下方式从Java调用Groovy:
ClassLoader parent = getClass().getClassLoader();
GroovyClassLoader loader = new GroovyClassLoader(parent);
Class groovyClass = loader.parseClass(groovySource); // groovySource is a File object pointing to .groovy file
GroovyObject groovyObject = (GroovyObject) groovyClass.newInstance();
Object[] args = {};
groovyObject.invokeMethod("doit", args);
问题:
类 oracle.jdbc.driver.OracleDriver 存在于Java的类路径中,但是groovy无法在行中找到它:Class.forName('oracle.jdbc.driver.OracleDriver');
抛出ClassNotFoundException。
答案 0 :(得分:1)
在groovy方法之前尝试魔术线:
@groovy.transform.CompileStatic
def doit(){....}
答案 1 :(得分:1)
你应该简单地将java CL传递给你的groovy方法:
def doit( ClassLoader cl ) {
cl.loadClass 'oracle.jdbc.driver.OracleDriver'
....
}
然后致电
ClassLoader parent = getClass().getClassLoader();
Object[] args = { parent };
groovyObject.invokeMethod("doit", args);