Java FixedValue类代码示例

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
@Test
@AgentAttachmentRule.Enforce(redefinesClasses = true)
public void testRedefinitionReloadingStrategy() throws Exception {
    assertThat(ByteBuddyAgent.install(), instanceOf(Instrumentation.class));
    Foo foo = new Foo();
    assertThat(foo.foo(), is(FOO));
    ClassReloadingStrategy classReloadingStrategy = new ClassReloadingStrategy(ByteBuddyAgent.getInstrumentation(), ClassReloadingStrategy.Strategy.REDEFINITION);
    new ByteBuddy()
            .redefine(Foo.class)
            .method(named(FOO))
            .intercept(FixedValue.value(BAR))
            .make()
            .load(Foo.class.getClassLoader(), classReloadingStrategy);
    try {
        assertThat(foo.foo(), is(BAR));
    } finally {
        classReloadingStrategy.reset(Foo.class);
        assertThat(foo.foo(), is(FOO));
    }
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
@Test
@AgentAttachmentRule.Enforce(redefinesClasses = true)
public void testFromAgentClassReloadingStrategy() throws Exception {
    assertThat(ByteBuddyAgent.install(), instanceOf(Instrumentation.class));
    Foo foo = new Foo();
    assertThat(foo.foo(), is(FOO));
    ClassReloadingStrategy classReloadingStrategy = ClassReloadingStrategy.fromInstalledAgent();
    new ByteBuddy()
            .redefine(Foo.class)
            .method(named(FOO))
            .intercept(FixedValue.value(BAR))
            .make()
            .load(Foo.class.getClassLoader(), classReloadingStrategy);
    try {
        assertThat(foo.foo(), is(BAR));
    } finally {
        classReloadingStrategy.reset(Foo.class);
        assertThat(foo.foo(), is(FOO));
    }
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
@Test
@AgentAttachmentRule.Enforce(redefinesClasses = true)
public void testFromAgentClassWithAuxiliaryReloadingStrategy() throws Exception {
    assertThat(ByteBuddyAgent.install(), instanceOf(Instrumentation.class));
    Foo foo = new Foo();
    assertThat(foo.foo(), is(FOO));
    ClassReloadingStrategy classReloadingStrategy = ClassReloadingStrategy.fromInstalledAgent();
    String randomName = FOO + RandomString.make();
    new ByteBuddy()
            .redefine(Foo.class)
            .method(named(FOO))
            .intercept(FixedValue.value(BAR))
            .make()
            .include(new ByteBuddy().subclass(Object.class).name(randomName).make())
            .load(Foo.class.getClassLoader(), classReloadingStrategy);
    try {
        assertThat(foo.foo(), is(BAR));
    } finally {
        classReloadingStrategy.reset(Foo.class);
        assertThat(foo.foo(), is(FOO));
    }
    assertThat(Class.forName(randomName), notNullValue(Class.class));
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
@Test
@AgentAttachmentRule.Enforce(retransformsClasses = true)
public void testRetransformationReloadingStrategy() throws Exception {
    assertThat(ByteBuddyAgent.install(), instanceOf(Instrumentation.class));
    Foo foo = new Foo();
    assertThat(foo.foo(), is(FOO));
    ClassReloadingStrategy classReloadingStrategy = new ClassReloadingStrategy(ByteBuddyAgent.getInstrumentation(), ClassReloadingStrategy.Strategy.RETRANSFORMATION);
    new ByteBuddy()
            .redefine(Foo.class)
            .method(named(FOO))
            .intercept(FixedValue.value(BAR))
            .make()
            .load(Foo.class.getClassLoader(), classReloadingStrategy);
    try {
        assertThat(foo.foo(), is(BAR));
    } finally {
        classReloadingStrategy.reset(Foo.class);
        assertThat(foo.foo(), is(FOO));
    }
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
@Test
@JavaVersionRule.Enforce(value = 8, atMost = 8)
@AgentAttachmentRule.Enforce(retransformsClasses = true)
public void testAnonymousType() throws Exception {
    ClassLoader classLoader = new ByteArrayClassLoader(ClassLoadingStrategy.BOOTSTRAP_LOADER,
            ClassFileExtraction.of(Class.forName(LAMBDA_SAMPLE_FACTORY)),
            ByteArrayClassLoader.PersistenceHandler.MANIFEST);
    Instrumentation instrumentation = ByteBuddyAgent.install();
    Class<?> factory = classLoader.loadClass(LAMBDA_SAMPLE_FACTORY);
    @SuppressWarnings("unchecked")
    Callable<String> instance = (Callable<String>) factory.getDeclaredMethod("nonCapturing").invoke(factory.getDeclaredConstructor().newInstance());
    // Anonymous types can only be reset to their original format, if a retransformation is applied.
    ClassReloadingStrategy classReloadingStrategy = new ClassReloadingStrategy(instrumentation,
            ClassReloadingStrategy.Strategy.RETRANSFORMATION).preregistered(instance.getClass());
    ClassFileLocator classFileLocator = ClassFileLocator.AgentBased.of(instrumentation, instance.getClass());
    try {
        assertThat(instance.call(), is(FOO));
        new ByteBuddy()
                .redefine(instance.getClass(), classFileLocator)
                .method(named("call"))
                .intercept(FixedValue.value(BAR))
                .make()
                .load(instance.getClass().getClassLoader(), classReloadingStrategy);
        assertThat(instance.call(), is(BAR));
    } finally {
        classReloadingStrategy.reset(classFileLocator, instance.getClass());
        assertThat(instance.call(), is(FOO));
    }
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
@Test
@JavaVersionRule.Enforce(8)
public void testVisibilityBridgeForDefaultMethod() throws Exception {
    Class<?> defaultInterface = new ByteBuddy()
            .makeInterface()
            .merge(Visibility.PACKAGE_PRIVATE)
            .defineMethod(FOO, String.class, Visibility.PUBLIC)
            .intercept(FixedValue.value(BAR))
            .make()
            .load(ClassLoadingStrategy.BOOTSTRAP_LOADER)
            .getLoaded();
    Class<?> type = new ByteBuddy()
            .subclass(defaultInterface)
            .modifiers(Visibility.PUBLIC)
            .make()
            .load(defaultInterface.getClassLoader(), ClassLoadingStrategy.Default.INJECTION)
            .getLoaded();
    assertThat(type.getDeclaredConstructors().length, is(1));
    assertThat(type.getDeclaredMethods().length, is(1));
    Method foo = type.getDeclaredMethod(FOO);
    assertThat(foo.isBridge(), is(true));
    assertThat(foo.invoke(type.getDeclaredConstructor().newInstance()), is((Object) (BAR)));
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
public void hello() throws IllegalAccessException, InstantiationException {

        Class<?> dynamicType = new ByteBuddy()
                .subclass(Bingoo.class)
                        // .name(namingStrategy)
                .method(named("toString")).intercept(FixedValue.value("Hello World!"))
                .make()
                .load(getClass().getClassLoader(), ClassLoadingStrategy.Default.WRAPPER)
                .getLoaded();
        Object instance = dynamicType.newInstance();
        System.out.println(instance.toString()); // "Hello World!"
        System.out.println(dynamicType.getName());
        //assertThat(dynamicType.newInstance().toString(), is("Hello World!"));
    }
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
/** Delegates to the given method if available, or does nothing. */
private static Implementation delegateOrNoop(
    TypeDescription doFnType, DoFnSignature.DoFnMethod method) {
  return (method == null)
      ? FixedValue.originType()
      : new DoFnMethodDelegation(doFnType, method.targetMethod());
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
private Collection<File> addClass(String name) throws IOException {
    return new ByteBuddy()
            .subclass(Object.class)
            .name(name)
            .defineMethod(FOO, String.class, Visibility.PUBLIC).intercept(FixedValue.value(FOO))
            .defineMethod(BAR, String.class, Visibility.PUBLIC).intercept(FixedValue.value(BAR))
            .make()
            .saveIn(target)
            .values();
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
private Collection<File> addClass(String name) throws IOException {
    return new ByteBuddy()
            .subclass(Object.class)
            .name(name)
            .defineMethod(FOO, String.class, Visibility.PUBLIC).intercept(FixedValue.value(FOO))
            .defineMethod(BAR, String.class, Visibility.PUBLIC).intercept(FixedValue.value(BAR))
            .make()
            .saveIn(project)
            .values();
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
@Override
public DynamicType.Builder<?> transform(DynamicType.Builder<?> builder,
                                        TypeDescription typeDescription,
                                        ClassLoader classLoader,
                                        JavaModule module) {
    return builder
            .method(isDeclaredBy(typeDescription).and(named(FOO))).intercept(FixedValue.value(FOO))
            .method(isDeclaredBy(typeDescription).and(named(BAR))).intercept(FixedValue.value(BAR));
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
@Override
public DynamicType.Builder<?> transform(DynamicType.Builder<?> builder,
                                        TypeDescription typeDescription,
                                        ClassLoader classLoader,
                                        JavaModule module) {
    return builder.method(named(FOO)).intercept(FixedValue.value(BAR));
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
@Test
public void testAdviceContainsDeadCode() throws Exception {
    Class<?> advice = new ByteBuddy(classFileVersion)
            .subclass(Object.class)
            .defineMethod(FOO, void.class, Ownership.STATIC)
            .intercept(new DeadVoidAppender())
            .annotateMethod(AnnotationDescription.Builder.ofType(Advice.OnMethodEnter.class).define("suppress", RuntimeException.class).build())
            .annotateMethod(AnnotationDescription.Builder.ofType(Advice.OnMethodExit.class).define("suppress", RuntimeException.class).build())
            .make()
            .load(getClass().getClassLoader(), ClassLoadingStrategy.Default.WRAPPER_PERSISTENT)
            .getLoaded();
    Class<?> foo = new ByteBuddy(classFileVersion)
            .subclass(Object.class)
            .defineMethod("foo", String.class, Visibility.PUBLIC)
            .intercept(FixedValue.value(FOO))
            .make()
            .load(ClassLoadingStrategy.BOOTSTRAP_LOADER, ClassLoadingStrategy.Default.WRAPPER_PERSISTENT)
            .getLoaded();
    Class<?> redefined = new ByteBuddy()
            .redefine(foo)
            .visit(Advice.to(advice).on(named(FOO)))
            .make()
            .load(null, ClassLoadingStrategy.Default.CHILD_FIRST)
            .getLoaded();
    assertThat(redefined, not(sameInstance((Object) foo)));
    assertThat(redefined.getDeclaredMethod(FOO).invoke(redefined.getDeclaredConstructor().newInstance()), is((Object) FOO));
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
@Test
public void testInconsistentStackSizeAdvice() throws Exception {
    Class<?> advice = new ByteBuddy()
            .subclass(Object.class)
            .defineMethod(FOO, type, Ownership.STATIC)
            .intercept(new InconsistentSizeAppender())
            .annotateMethod(AnnotationDescription.Builder.ofType(Advice.OnMethodEnter.class).define("suppress", RuntimeException.class).build())
            .annotateMethod(AnnotationDescription.Builder.ofType(Advice.OnMethodExit.class).define("suppress", RuntimeException.class).build())
            .make()
            .load(getClass().getClassLoader(), ClassLoadingStrategy.Default.WRAPPER_PERSISTENT)
            .getLoaded();
    Class<?> foo = new ByteBuddy()
            .subclass(Object.class)
            .defineMethod("foo", String.class, Visibility.PUBLIC)
            .intercept(FixedValue.value(FOO))
            .make()
            .load(ClassLoadingStrategy.BOOTSTRAP_LOADER, ClassLoadingStrategy.Default.WRAPPER_PERSISTENT)
            .getLoaded();
    Class<?> redefined = new ByteBuddy()
            .redefine(foo)
            .visit(Advice.to(advice).on(named(FOO)))
            .make()
            .load(null, ClassLoadingStrategy.Default.CHILD_FIRST)
            .getLoaded();
    assertThat(redefined, not(sameInstance((Object) foo)));
    assertThat(redefined.getDeclaredMethod(FOO).invoke(redefined.getDeclaredConstructor().newInstance()), is((Object) FOO));
}
 

import net.bytebuddy.implementation.FixedValue; //导入依赖的package包/类
@Test
public void testGenericMethod() throws Exception {
    DynamicType.Unloaded<?> unloaded = new ByteBuddy()
            .redefine(GenericMethod.class)
            .method(named(FOO))
            .intercept(FixedValue.nullValue())
            .make();
    Class<?> type = unloaded.load(ClassLoadingStrategy.BOOTSTRAP_LOADER, ClassLoadingStrategy.Default.WRAPPER).getLoaded();
    MethodDescription createdMethod = new MethodDescription.ForLoadedMethod(type.getDeclaredMethod(FOO, Exception.class));
    MethodDescription originalMethod = new MethodDescription.ForLoadedMethod(GenericMethod.class.getDeclaredMethod(FOO, Exception.class));
    assertThat(createdMethod.getTypeVariables(), is(originalMethod.getTypeVariables()));
    assertThat(createdMethod.getReturnType(), is(originalMethod.getReturnType()));
    assertThat(createdMethod.getParameters().getOnly().getType(), is(originalMethod.getParameters().getOnly().getType()));
    assertThat(createdMethod.getExceptionTypes().getOnly(), is(originalMethod.getExceptionTypes().getOnly()));
}