java.lang.reflect.Constructor.isAccessible()方法的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
字(8.0k)|赞(0)|评价(0)|浏览(229)

本文整理了Java中java.lang.reflect.Constructor.isAccessible()方法的一些代码示例，展示了Constructor.isAccessible()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Constructor.isAccessible()方法的具体详情如下：
包路径：java.lang.reflect.Constructor
类名称：Constructor
方法名：isAccessible

Constructor.isAccessible介绍

暂无

代码示例

代码示例来源：origin: libgdx/libgdx

public boolean isAccessible () {
  return constructor.isAccessible();
}

代码示例来源：origin: libgdx/libgdx

public boolean isAccessible () {
  return constructor.isAccessible();
}

代码示例来源：origin: oldmanpushcart/greys-anatomy

@Override
public boolean isAccessible() {
  return target.isAccessible();
}

代码示例来源：origin: alibaba/jvm-sandbox

@Override
public boolean isAccessible() {
  return target.isAccessible();
}

代码示例来源：origin: spring-projects/spring-framework

/**
 * Make the given constructor accessible, explicitly setting it accessible
 * if necessary. The {@code setAccessible(true)} method is only called
 * when actually necessary, to avoid unnecessary conflicts with a JVM
 * SecurityManager (if active).
 * @param ctor the constructor to make accessible
 * @see java.lang.reflect.Constructor#setAccessible
 */
@SuppressWarnings("deprecation")  // on JDK 9
public static void makeAccessible(Constructor<?> ctor) {
  if ((!Modifier.isPublic(ctor.getModifiers()) ||
      !Modifier.isPublic(ctor.getDeclaringClass().getModifiers())) && !ctor.isAccessible()) {
    ctor.setAccessible(true);
  }
}

代码示例来源：origin: nutzam/nutz

public FallbackFastMethod(Constructor<?> constructor) {
  this.constructor = constructor;
  if (!this.constructor.isAccessible())
    this.constructor.setAccessible(true);
}

代码示例来源：origin: nutzam/nutz

public AbstractConstructorBorning(Constructor<?> c) {
  super();
  if (!c.isAccessible())
    c.setAccessible(true);
  this.c = c;
}

代码示例来源：origin: ltsopensource/light-task-scheduler

public static <T> T newInstance(Class<T> clazz, ClassLoader classLoader, String className) throws Exception {
  final Constructor<T> constructor = clazz.getDeclaredConstructor();
  if (!constructor.isAccessible()) {
    constructor.setAccessible(true);
  }
  CONSTRUCTOR_CACHE.put(classLoader, className, constructor);
  return constructor.newInstance();
}

代码示例来源：origin: ltsopensource/light-task-scheduler

public static <T> T newInstance(Class<T> clazz, ClassLoader classLoader, String className) throws Exception {
  final Constructor<T> constructor = clazz.getDeclaredConstructor();
  if (!constructor.isAccessible()) {
    constructor.setAccessible(true);
  }
  CONSTRUCTOR_CACHE.put(classLoader, className, constructor);
  return constructor.newInstance();
}

代码示例来源：origin: jdbi/jdbi

private static MethodHandles.Lookup getConstructorLookup(Class<?> type) throws ReflectiveOperationException {
    Constructor<MethodHandles.Lookup> constructor = MethodHandles.Lookup.class.getDeclaredConstructor(Class.class, int.class);

    if (!constructor.isAccessible()) {
      constructor.setAccessible(true);
    }

    return constructor.newInstance(type, ANY_ACCESS);
  }
}

代码示例来源：origin: org.springframework/spring-core

/**
 * Make the given constructor accessible, explicitly setting it accessible
 * if necessary. The {@code setAccessible(true)} method is only called
 * when actually necessary, to avoid unnecessary conflicts with a JVM
 * SecurityManager (if active).
 * @param ctor the constructor to make accessible
 * @see java.lang.reflect.Constructor#setAccessible
 */
@SuppressWarnings("deprecation")  // on JDK 9
public static void makeAccessible(Constructor<?> ctor) {
  if ((!Modifier.isPublic(ctor.getModifiers()) ||
      !Modifier.isPublic(ctor.getDeclaringClass().getModifiers())) && !ctor.isAccessible()) {
    ctor.setAccessible(true);
  }
}

代码示例来源：origin: deeplearning4j/nd4j

public static void makeAccessible(Constructor<?> ctor) {
  if ((!Modifier.isPublic(ctor.getModifiers()) || !Modifier.isPublic(ctor.getDeclaringClass().getModifiers()))
          && !ctor.isAccessible()) {
    ctor.setAccessible(true);
  }
}

代码示例来源：origin: eclipse-vertx/vert.x

/**
 * Checks whether the given class can be used by the {@link ConstructorBasedConverter} (i.e. has a constructor
 * taking a single String as argument). If so, creates a new instance of converter for this type.
 *
 * @param clazz the class
 * @return a {@link ConstructorBasedConverter} if the given class is eligible,
 * {@literal null} otherwise.
 */
public static <T> ConstructorBasedConverter<T> getIfEligible(Class<T> clazz) {
 try {
  final Constructor<T> constructor = clazz.getConstructor(String.class);
  if (!constructor.isAccessible()) {
   constructor.setAccessible(true);
  }
  return new ConstructorBasedConverter<>(constructor);
 } catch (NoSuchMethodException e) {
  // The class does not have the right constructor, return null.
  return null;
 }
}

代码示例来源：origin: prestodb/presto

Object readResolve() {
  Class<?> clazz = _serialization.clazz;
  try {
    Constructor<?> ctor = clazz.getDeclaredConstructor(_serialization.args);
    // 06-Oct-2012, tatu: Has "lost" its security override, must force back
    if (!ctor.isAccessible()) {
      ClassUtil.checkAndFixAccess(ctor, false);
    }
    return new AnnotatedConstructor(null, ctor, null, null);
  } catch (Exception e) {
    throw new IllegalArgumentException("Could not find constructor with "
        +_serialization.args.length+" args from Class '"+clazz.getName());
  }
}

代码示例来源：origin: redisson/redisson

Object readResolve() {
  Class<?> clazz = _serialization.clazz;
  try {
    Constructor<?> ctor = clazz.getDeclaredConstructor(_serialization.args);
    // 06-Oct-2012, tatu: Has "lost" its security override, must force back
    if (!ctor.isAccessible()) {
      ClassUtil.checkAndFixAccess(ctor, false);
    }
    return new AnnotatedConstructor(null, ctor, null, null);
  } catch (Exception e) {
    throw new IllegalArgumentException("Could not find constructor with "
        +_serialization.args.length+" args from Class '"+clazz.getName());
  }
}

代码示例来源：origin: spring-projects/spring-framework

@SuppressWarnings("deprecation")  // on JDK 9
public static Object newInstance(final Constructor cstruct, final Object[] args) {
  boolean flag = cstruct.isAccessible();
  try {
    if (!flag) {
      cstruct.setAccessible(true);
    }
    Object result = cstruct.newInstance(args);
    return result;
  }
  catch (InstantiationException e) {
    throw new CodeGenerationException(e);
  }
  catch (IllegalAccessException e) {
    throw new CodeGenerationException(e);
  }
  catch (InvocationTargetException e) {
    throw new CodeGenerationException(e.getTargetException());
  }
  finally {
    if (!flag) {
      cstruct.setAccessible(flag);
    }
  }
}

代码示例来源：origin: google/j2objc

public static Object newInstance(final Constructor cstruct, final Object[] args) {
    
  boolean flag = cstruct.isAccessible();
  try {
    cstruct.setAccessible(true);
    Object result = cstruct.newInstance(args);
    return result;
  } catch (InstantiationException e) {
    throw new CodeGenerationException(e);
  } catch (IllegalAccessException e) {
    throw new CodeGenerationException(e);
  } catch (InvocationTargetException e) {
    throw new CodeGenerationException(e.getTargetException());
  } finally {
    cstruct.setAccessible(flag);
  }
      
}

代码示例来源：origin: baomidou/mybatis-plus

private Object invokeDefaultMethod(Object proxy, Method method, Object[] args)
  throws Throwable {
  final Constructor<MethodHandles.Lookup> constructor = MethodHandles.Lookup.class
    .getDeclaredConstructor(Class.class, int.class);
  if (!constructor.isAccessible()) {
    constructor.setAccessible(true);
  }
  final Class<?> declaringClass = method.getDeclaringClass();
  return constructor
    .newInstance(declaringClass,
      MethodHandles.Lookup.PRIVATE | MethodHandles.Lookup.PROTECTED
        | MethodHandles.Lookup.PACKAGE | MethodHandles.Lookup.PUBLIC)
    .unreflectSpecial(method, declaringClass).bindTo(proxy).invokeWithArguments(args);
}

代码示例来源：origin: wildfly/wildfly

static Constructor<?> newConstructorForSerialization(Class<?> classToInstantiate, Constructor<?> constructorToCall) {
  final Constructor<?> serCtor = reflectionFactory.newConstructorForSerialization(classToInstantiate, constructorToCall);
  if (! serCtor.isAccessible()) {
    // older JDK 8...
    AccessController.doPrivileged(new SetAccessibleAction(serCtor));
  }
  return serCtor;
}

代码示例来源：origin: firebase/firebase-jobdispatcher-android

public static void assertHasSinglePrivateConstructor(Class<?> cls) throws Exception {
 Constructor<?>[] constructors = cls.getDeclaredConstructors();
 assertEquals("expected number of constructors to be == 1", 1, constructors.length);
 Constructor<?> constructor = constructors[0];
 assertFalse("expected constructor to be inaccessible", constructor.isAccessible());
 constructor.setAccessible(true);
 constructor.newInstance();
}

内容来源于网络，如有侵权，请联系作者删除！

Constructor

相关文章

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新文章

    更多

    Constructor类方法

    • 蜀ICP备13028337号-1 大数据知识库 https://www.saoniuhuo.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com