[英]loading a class from out of classpath by using Java Reflection
我想加載類不在類路徑中的類。 有沒有辦法按文件路徑加載類而不在classpath中? 例如
ClassLoader.load("c:\MyClass.class");
從這里取的例子:
// Create a File object on the root of the directory containing the class file
File file = new File("c:\\myclasses\\");
try {
// Convert File to a URL
URL url = file.toURL(); // file:/c:/myclasses/
URL[] urls = new URL[]{url};
// Create a new class loader with the directory
ClassLoader cl = new URLClassLoader(urls);
// Load in the class; MyClass.class should be located in
// the directory file:/c:/myclasses/com/mycompany
Class cls = cl.loadClass("com.mycompany.MyClass");
} catch (MalformedURLException e) {
} catch (ClassNotFoundException e) {
}
將類內容加載到字節數組中,並手動使用ClassLoader.html#defineClass(java.lang.String,byte [],int,int) 。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.