有没有一种方法可以像isPrimitive()一样查找Field是否为布尔值



有没有办法找到一个字段在Java反射中是否是booleanisPrimitive()

Field fieldlist[] = clazz.getDeclaredFields();
for (int i = 0; fieldlist.length & gt; i; i++) {
 Field fld = fieldlist[i];
 if (fld.getClass().isPrimitive()) {
  fld.setInt(object, 0);
  continue;
 }
}
if(fld.getType().equals(boolean.class))

刚刚测试了这一点,它适用于基元boolean变量。

我相信Boolean.class.isAssignableFrom(fld.getClass())可以用于确定字段是否为布尔值。不过,我还没有机会测试这是否适用于原语。

试试这个(参考):

public boolean getBoolean(Object obj)
               throws IllegalArgumentException,
                      IllegalAccessException
Gets the value of a static or instance boolean field.
Parameters:
    obj - the object to extract the boolean value from 
Returns:
    the value of the boolean field 
Throws:
    IllegalAccessException - if the underlying field is inaccessible. 
    IllegalArgumentException - if the specified object is not an instance of the class or interface declaring the underlying field (or a subclass or implementor thereof), **or if the field value cannot be converted to the type boolean** by a widening conversion. 
    NullPointerException - if the specified object is null and the field is an instance field. 
    ExceptionInInitializerError - if the initialization provoked by this method fails.

这是用于基元和对象的:

boolean isBooleanType = field.getType().equals(boolean.class) || field.getType().equals(Boolean.class);

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