本文整理了Java中com.drew.metadata.Directory.getObject()方法的一些代码示例，展示了Directory.getObject()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。Directory.getObject()方法的具体详情如下：
包路径：com.drew.metadata.Directory
类名称：Directory
方法名：getObject

Directory.getObject介绍

[英]Returns the object hashed for the particular tag type specified, if available.
[中]返回指定的特定标记类型的哈希对象（如果可用）。

代码示例

代码示例来源：origin: drewnoakes/metadata-extractor

@Nullable
public StringValue getStringValue(int tagType)
{
  Object o = getObject(tagType);
  if (o instanceof StringValue)
    return (StringValue)o;
  return null;
}

代码示例来源：origin: drewnoakes/metadata-extractor

/** Returns the specified tag's value as an array of Rational.  If the value is unset or cannot be converted, <code>null</code> is returned. */
@Nullable
public Rational[] getRationalArray(int tagType)
{
  Object o = getObject(tagType);
  if (o == null)
    return null;
  if (o instanceof Rational[])
    return (Rational[])o;
  return null;
}

代码示例来源：origin: drewnoakes/metadata-extractor

/** Returns the specified tag's value as a float.  If the tag is not set or cannot be converted, <code>null</code> is returned. */
@Nullable
public Float getFloatObject(int tagType)
{
  Object o = getObject(tagType);
  if (o == null)
    return null;
  if (o instanceof String || o instanceof StringValue) {
    try {
      return Float.parseFloat(o.toString());
    } catch (NumberFormatException nfe) {
      return null;
    }
  }
  if (o instanceof Number)
    return ((Number)o).floatValue();
  return null;
}

代码示例来源：origin: drewnoakes/metadata-extractor

/**
 * Gets the specified tag's value as a StringValue array, if possible.
 * Only succeeds if the tag is set as StringValue[], or StringValue.
 *
 * @param tagType the tag identifier
 * @return the tag's value as an array of StringValues. If the value is unset or cannot be converted, <code>null</code> is returned.
 */
@Nullable
public StringValue[] getStringValueArray(int tagType)
{
  Object o = getObject(tagType);
  if (o == null)
    return null;
  if (o instanceof StringValue[])
    return (StringValue[])o;
  if (o instanceof StringValue)
    return new StringValue[] {(StringValue) o};
  return null;
}

代码示例来源：origin: drewnoakes/metadata-extractor

/** Returns the specified tag's value as a Double.  If the tag is not set or cannot be converted, <code>null</code> is returned. */
@Nullable
public Double getDoubleObject(int tagType)
{
  Object o = getObject(tagType);
  if (o == null)
    return null;
  if (o instanceof String || o instanceof StringValue) {
    try {
      return Double.parseDouble(o.toString());
    } catch (NumberFormatException nfe) {
      return null;
    }
  }
  if (o instanceof Number)
    return ((Number)o).doubleValue();
  return null;
}

代码示例来源：origin: drewnoakes/metadata-extractor

/** Returns the specified tag's value as a boolean.  If the tag is not set or cannot be converted, <code>null</code> is returned. */
@Nullable
@SuppressWarnings(value = "NP_BOOLEAN_RETURN_NULL", justification = "keep API interface consistent")
public Boolean getBooleanObject(int tagType)
{
  Object o = getObject(tagType);
  if (o == null)
    return null;
  if (o instanceof Boolean)
    return (Boolean)o;
  if (o instanceof String || o instanceof StringValue) {
    try {
      return Boolean.getBoolean(o.toString());
    } catch (NumberFormatException nfe) {
      return null;
    }
  }
  if (o instanceof Number)
    return (((Number)o).doubleValue() != 0);
  return null;
}

代码示例来源：origin: drewnoakes/metadata-extractor

public String getDescription(int tagType)
  Object object = _directory.getObject(tagType);

代码示例来源：origin: drewnoakes/metadata-extractor

@Nullable
public String getReferenceBlackWhiteDescription()
{
  // For some reason, sometimes this is read as a long[] and
  // getIntArray isn't able to deal with it
  int[] ints = _directory.getIntArray(TAG_REFERENCE_BLACK_WHITE);
  if (ints==null || ints.length < 6)
  {
    Object o = _directory.getObject(TAG_REFERENCE_BLACK_WHITE);
    if (o != null && (o instanceof long[]))
    {
      long[] longs = (long[])o;
      if (longs.length < 6)
        return null;
      ints = new int[longs.length];
      for (int i = 0; i < longs.length; i++)
        ints[i] = (int)longs[i];
    }
    else
      return null;
  }
  int blackR = ints[0];
  int whiteR = ints[1];
  int blackG = ints[2];
  int whiteG = ints[3];
  int blackB = ints[4];
  int whiteB = ints[5];
  return String.format("[%d,%d,%d] [%d,%d,%d]", blackR, blackG, blackB, whiteR, whiteG, whiteB);
}

代码示例来源：origin: drewnoakes/metadata-extractor

public Long getLongObject(int tagType)
  Object o = getObject(tagType);
  if (o == null)
    return null;

代码示例来源：origin: drewnoakes/metadata-extractor

/** Returns the specified tag's value as a long, if possible. */
public long getLong(int tagType) throws MetadataException
{
  Long value = getLongObject(tagType);
  if (value != null)
    return value;
  Object o = getObject(tagType);
  if (o == null)
    throw new MetadataException("Tag '" + getTagName(tagType) + "' has not been set -- check using containsTag() first");
  throw new MetadataException("Tag '" + tagType + "' cannot be converted to a long.  It is of type '" + o.getClass() + "'.");
}

代码示例来源：origin: drewnoakes/metadata-extractor

public Integer getInteger(int tagType)
  Object o = getObject(tagType);

代码示例来源：origin: drewnoakes/metadata-extractor

/** Returns the specified tag's value as a boolean, if possible. */
public boolean getBoolean(int tagType) throws MetadataException
{
  Boolean value = getBooleanObject(tagType);
  if (value != null)
    return value;
  Object o = getObject(tagType);
  if (o == null)
    throw new MetadataException("Tag '" + getTagName(tagType) + "' has not been set -- check using containsTag() first");
  throw new MetadataException("Tag '" + tagType + "' cannot be converted to a boolean.  It is of type '" + o.getClass() + "'.");
}

代码示例来源：origin: drewnoakes/metadata-extractor

/** Returns the specified tag's value as a double, if possible. */
public double getDouble(int tagType) throws MetadataException
{
  Double value = getDoubleObject(tagType);
  if (value!=null)
    return value;
  Object o = getObject(tagType);
  if (o == null)
    throw new MetadataException("Tag '" + getTagName(tagType) + "' has not been set -- check using containsTag() first");
  throw new MetadataException("Tag '" + tagType + "' cannot be converted to a double.  It is of type '" + o.getClass() + "'.");
}
/** Returns the specified tag's value as a Double.  If the tag is not set or cannot be converted, <code>null</code> is returned. */

代码示例来源：origin: drewnoakes/metadata-extractor

/** Returns the specified tag's value as a float, if possible. */
public float getFloat(int tagType) throws MetadataException
{
  Float value = getFloatObject(tagType);
  if (value!=null)
    return value;
  Object o = getObject(tagType);
  if (o == null)
    throw new MetadataException("Tag '" + getTagName(tagType) + "' has not been set -- check using containsTag() first");
  throw new MetadataException("Tag '" + tagType + "' cannot be converted to a float.  It is of type '" + o.getClass() + "'.");
}

代码示例来源：origin: drewnoakes/metadata-extractor

public int[] getIntArray(int tagType)
  Object o = getObject(tagType);
  if (o == null)
    return null;

代码示例来源：origin: drewnoakes/metadata-extractor

public String getString(int tagType)
  Object o = getObject(tagType);
  if (o == null)
    return null;

代码示例来源：origin: drewnoakes/metadata-extractor

public byte[] getByteArray(int tagType)
  Object o = getObject(tagType);
  if (o == null) {
    return null;

代码示例来源：origin: drewnoakes/metadata-extractor

/** Returns the specified tag's value as a Rational.  If the value is unset or cannot be converted, <code>null</code> is returned. */
@Nullable
public Rational getRational(int tagType)
{
  Object o = getObject(tagType);
  if (o == null)
    return null;
  if (o instanceof Rational)
    return (Rational)o;
  if (o instanceof Integer)
    return new Rational((Integer)o, 1);
  if (o instanceof Long)
    return new Rational((Long)o, 1);
  // NOTE not doing conversions for real number types
  return null;
}

代码示例来源：origin: drewnoakes/metadata-extractor

public String[] getStringArray(int tagType)
  Object o = getObject(tagType);
  if (o == null)
    return null;

代码示例来源：origin: drewnoakes/metadata-extractor

/**
 * Returns the specified tag's value as an int, if possible.  Every attempt to represent the tag's value as an int
 * is taken.  Here is a list of the action taken depending upon the tag's original type:
 * <ul>
 * <li> int - Return unchanged.
 * <li> Number - Return an int value (real numbers are truncated).
 * <li> Rational - Truncate any fractional part and returns remaining int.
 * <li> String - Attempt to parse string as an int.  If this fails, convert the char[] to an int (using shifts and OR).
 * <li> Rational[] - Return int value of first item in array.
 * <li> byte[] - Return int value of first item in array.
 * <li> int[] - Return int value of first item in array.
 * </ul>
 *
 * @throws MetadataException if no value exists for tagType or if it cannot be converted to an int.
 */
public int getInt(int tagType) throws MetadataException
{
  Integer integer = getInteger(tagType);
  if (integer!=null)
    return integer;
  Object o = getObject(tagType);
  if (o == null)
    throw new MetadataException("Tag '" + getTagName(tagType) + "' has not been set -- check using containsTag() first");
  throw new MetadataException("Tag '" + tagType + "' cannot be converted to int.  It is of type '" + o.getClass() + "'.");
}