This commit is contained in:
wentch
2015-12-25 10:47:20 +08:00
parent 90444b142a
commit d36c3fad1f
2 changed files with 48 additions and 15 deletions

View File

@@ -5,10 +5,12 @@
package org.redkale.util;
import java.beans.*;
import java.io.*;
import java.lang.annotation.*;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.reflect.*;
import java.net.*;
import java.util.*;
import org.objectweb.asm.*;
@@ -72,7 +74,7 @@ public interface Creator<T> {
public T create(Object... params);
public static abstract class Creators {
public abstract class Creators {
@SuppressWarnings("unchecked")
public static <T> Creator<T> create(Class<T> clazz) {
@@ -110,22 +112,23 @@ public interface Creator<T> {
return (Creator) Class.forName(newDynName.replace('/', '.')).newInstance();
} catch (Exception ex) {
}
Constructor<T> constructor = null;
Constructor<T> constructor0 = null;
for (Constructor c : clazz.getConstructors()) {
if (c.getParameterTypes().length == 0) { //为了兼容android 而不使用 getParameterCount()
constructor = c;
constructor0 = c;
break;
}
}
if (constructor == null) {
for (Constructor c : clazz.getConstructors()) {
//if (Modifier.isPrivate(c.getModifiers())) continue;
if (constructor0 == null) {
for (Constructor c : clazz.getDeclaredConstructors()) {
if (Modifier.isPrivate(c.getModifiers())) continue;
if (c.getAnnotation(ConstructorProperties.class) != null) {
constructor = c;
constructor0 = c;
break;
}
}
}
final Constructor<T> constructor = constructor0;
if (constructor == null) throw new RuntimeException("[" + clazz + "] have no public or java.beans.ConstructorProperties-Annotation constructor.");
//-------------------------------------------------------------
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
@@ -247,14 +250,44 @@ public interface Creator<T> {
mv.visitEnd();
}
cw.visitEnd();
byte[] bytes = cw.toByteArray();
Class<?> creatorClazz = new ClassLoader(loader) {
public final Class<?> loadClass(String name, byte[] b) {
return defineClass(name, b, 0, b.length);
final byte[] bytes = cw.toByteArray();
Class<?> resultClazz = null;
if (loader instanceof URLClassLoader) {
try {
final URLClassLoader urlLoader = (URLClassLoader) loader;
final URL url = new URL("memclass", "localhost", -1, "/" + newDynName.replace('/', '.') + "/", new URLStreamHandler() {
@Override
protected URLConnection openConnection(URL u) throws IOException {
return new URLConnection(u) {
@Override
public void connect() throws IOException {
}
@Override
public InputStream getInputStream() throws IOException {
return new ByteArrayInputStream(bytes);
}
};
}
});
Method addURLMethod = URLClassLoader.class.getDeclaredMethod("addURL", URL.class);
addURLMethod.setAccessible(true);
addURLMethod.invoke(urlLoader, url);
resultClazz = urlLoader.loadClass(newDynName.replace('/', '.'));
} catch (Throwable t) { //异常无需理会, 使用下一种loader方式
t.printStackTrace();
}
}.loadClass(newDynName.replace('/', '.'), bytes);
}
try {
return (Creator) creatorClazz.newInstance();
if (resultClazz == null) {
if (!Modifier.isPublic(constructor.getModifiers())) throw new RuntimeException("[" + clazz + "] have no public or java.beans.ConstructorProperties-Annotation constructor.");
resultClazz = new ClassLoader(loader) {
public final Class<?> loadClass(String name, byte[] b) {
return defineClass(name, b, 0, b.length);
}
}.loadClass(newDynName.replace('/', '.'), bytes);
}
return (Creator) resultClazz.newInstance();
} catch (Exception ex) {
throw new RuntimeException(ex);
}

View File

@@ -382,8 +382,8 @@ public final class Utility {
* @param low
* @return
*/
public static long merge(long high, long low) {
return high << 32 | low;
public static long merge(int high, int low) {
return (0L + high) << 32 | low;
}
public static ByteBuffer encodeUTF8(final ByteBuffer buffer, final char[] text, final int start, final int len) {