import org.springframework.objenesis.ObjenesisStd; //导入依赖的package包/类
@Test
public void test1() throws IllegalAccessException, InstantiationException {
    Objenesis objenesis = new ObjenesisStd(true);
    Class<User> clazz = User.class;
    long start = System.currentTimeMillis();
    for(int i=0; i<10000000; i++) {
        User user = objenesis.newInstance(clazz);
    }
    long end = System.currentTimeMillis();
    System.out.println("objenesis: " + (end - start));
}
 

import org.springframework.objenesis.ObjenesisStd; //导入依赖的package包/类
private void doDisableCaching() {
	try {
		Class<?> type = ClassUtils.forName(
				"org.springframework.hateoas.core.DummyInvocationUtils",
				getClass().getClassLoader());
		Field objenesis = ReflectionUtils.findField(type, "OBJENESIS");
		if (objenesis != null) {
			ReflectionUtils.makeAccessible(objenesis);
			ReflectionUtils.setField(objenesis, null, new ObjenesisStd(false));
		}
	}
	catch (Exception ex) {
		// Assume that Spring HATEOAS is not on the classpath and continue
	}
}
 

import org.springframework.objenesis.ObjenesisStd; //导入依赖的package包/类
/**
 * Creates a new {@link ObjenesisCglibAopProxy} using the given {@link AdvisedSupport}.
 * @param config must not be {@literal null}.
 */
public ObjenesisCglibAopProxy(AdvisedSupport config) {
	super(config);
	this.objenesis = new ObjenesisStd(true);
}