How to use

CustomNumberEditor

in

org.springframework.beans.propertyeditors

  @Override
  public void registerCustomEditors(PropertyEditorRegistry registry) {
    registry.registerCustomEditor(Number.class, new CustomNumberEditor(Integer.class, false));
  }
});

@Test
public void testCustomNumberEditor() {
  CustomNumberEditor editor = new CustomNumberEditor(Integer.class, false);
  editor.setAsText("5");
  assertEquals(new Integer(5), editor.getValue());
  assertEquals("5", editor.getAsText());
  editor.setValue(null);
  assertEquals(null, editor.getValue());
  assertEquals("", editor.getAsText());
}

@Test
public void testCustomNumberEditorWithHex() {
  CustomNumberEditor editor = new CustomNumberEditor(Integer.class, false);
  editor.setAsText("0x" + Integer.toHexString(64));
  assertEquals(new Integer(64), editor.getValue());
}

@Test
public void testParseShortGreaterThanMaxValueWithoutNumberFormat() {
  try {
    CustomNumberEditor editor = new CustomNumberEditor(Short.class, true);
    editor.setAsText(String.valueOf(Short.MAX_VALUE + 1));
    fail(Short.MAX_VALUE + 1 + " is greater than max value");
  }
  catch (NumberFormatException ex) {
    // expected
  }
}

/**
 * Parse the Number from the given text, using the specified NumberFormat.
 */
@Override
public void setAsText(String text) throws IllegalArgumentException {
  if (this.allowEmpty && !StringUtils.hasText(text)) {
    // Treat empty String as null value.
    setValue(null);
  }
  else if (this.numberFormat != null) {
    // Use given NumberFormat for parsing text.
    setValue(NumberUtils.parseNumber(text, this.numberClass, this.numberFormat));
  }
  else {
    // Use default valueOf methods for parsing text.
    setValue(NumberUtils.parseNumber(text, this.numberClass));
  }
}

/**
 * Format the Number as String, using the specified NumberFormat.
 */
@Override
public String getAsText() {
  Object value = getValue();
  if (value == null) {
    return "";
  }
  if (this.numberFormat != null) {
    // Use NumberFormat for rendering value.
    return this.numberFormat.format(value);
  }
  else {
    // Use toString method for rendering value.
    return value.toString();
  }
}

/**
 * Parse the Number from the given text, using the specified NumberFormat.
 */
@Override
public void setAsText(String text) throws IllegalArgumentException {
  if (this.allowEmpty && !StringUtils.hasText(text)) {
    // Treat empty String as null value.
    setValue(null);
  }
  else if (this.numberFormat != null) {
    // Use given NumberFormat for parsing text.
    setValue(NumberUtils.parseNumber(text, this.numberClass, this.numberFormat));
  }
  else {
    // Use default valueOf methods for parsing text.
    setValue(NumberUtils.parseNumber(text, this.numberClass));
  }
}

/**
 * Format the Number as String, using the specified NumberFormat.
 */
@Override
public String getAsText() {
  Object value = getValue();
  if (value == null) {
    return "";
  }
  if (this.numberFormat != null) {
    // Use NumberFormat for rendering value.
    return this.numberFormat.format(value);
  }
  else {
    // Use toString method for rendering value.
    return value.toString();
  }
}

  @Override
  public void registerCustomEditors(PropertyEditorRegistry registry) {
    registry.registerCustomEditor(Number.class, new CustomNumberEditor(Integer.class, false));
  }
});

@Test
public void testCustomNumberEditorWithEmptyAsNull() {
  CustomNumberEditor editor = new CustomNumberEditor(Integer.class, true);
  editor.setAsText("5");
  assertEquals(new Integer(5), editor.getValue());
  assertEquals("5", editor.getAsText());
  editor.setAsText("");
  assertEquals(null, editor.getValue());
  assertEquals("", editor.getAsText());
  editor.setValue(null);
  assertEquals(null, editor.getValue());
  assertEquals("", editor.getAsText());
}

/**
 * Parse the Number from the given text, using the specified NumberFormat.
 */
@Override
public void setAsText(String text) throws IllegalArgumentException {
  if (this.allowEmpty && !StringUtils.hasText(text)) {
    // Treat empty String as null value.
    setValue(null);
  }
  else if (this.numberFormat != null) {
    // Use given NumberFormat for parsing text.
    setValue(NumberUtils.parseNumber(text, this.numberClass, this.numberFormat));
  }
  else {
    // Use default valueOf methods for parsing text.
    setValue(NumberUtils.parseNumber(text, this.numberClass));
  }
}

/**
 * Format the Number as String, using the specified NumberFormat.
 */
@Override
public String getAsText() {
  Object value = getValue();
  if (value == null) {
    return "";
  }
  if (this.numberFormat != null) {
    // Use NumberFormat for rendering value.
    return this.numberFormat.format(value);
  }
  else {
    // Use toString method for rendering value.
    return value.toString();
  }
}

  @Override
  public void registerCustomEditors(PropertyEditorRegistry registry) {
    NumberFormat nf = NumberFormat.getInstance(Locale.GERMAN);
    registry.registerCustomEditor(Float.class, new CustomNumberEditor(Float.class, nf, true));
  }
});

@Override
public void setValue(Object value) {
  if (allowEmpty && value == null) {
    super.setValue(DEFAULT.get(numberClass));
  } else {
    super.setValue(value);
  }
}

/**
 * Format the Number as String, using the specified NumberFormat.
 */
public String getAsText() {
  Object value = getValue();
  if (value == null) {
    return "";
  }
  if (this.numberFormat != null) {
    // Use NumberFormat for rendering value.
    return this.numberFormat.format(value);
  }
  else {
    // Use toString method for rendering value.
    return value.toString();
  }
}

  @Override
  public void registerCustomEditors(PropertyEditorRegistry registry) {
    NumberFormat nf = NumberFormat.getInstance(Locale.GERMAN);
    registry.registerCustomEditor(Float.class, new CustomNumberEditor(Float.class, nf, true));
  }
});

/**
 * Parse the Number from the given text, using the specified NumberFormat.
 */
public void setAsText(String text) throws IllegalArgumentException {
  if (this.allowEmpty && !StringUtils.hasText(text)) {
    // Treat empty String as null value.
    setValue(null);
  }
  else if (this.numberFormat != null) {
    // Use given NumberFormat for parsing text.
    setValue(NumberUtils.parseNumber(text, this.numberClass, this.numberFormat));
  }
  else {
    // Use default valueOf methods for parsing text.
    setValue(NumberUtils.parseNumber(text, this.numberClass));
  }
}

/**
 * Format the Number as String, using the specified NumberFormat.
 */
@Override
public String getAsText() {
  Object value = getValue();
  if (value == null) {
    return "";
  }
  if (this.numberFormat != null) {
    // Use NumberFormat for rendering value.
    return this.numberFormat.format(value);
  }
  else {
    // Use toString method for rendering value.
    return value.toString();
  }
}

this.defaultEditors.put(byte.class, new CustomNumberEditor(Byte.class, false));
this.defaultEditors.put(Byte.class, new CustomNumberEditor(Byte.class, true));
this.defaultEditors.put(short.class, new CustomNumberEditor(Short.class, false));
this.defaultEditors.put(Short.class, new CustomNumberEditor(Short.class, true));
this.defaultEditors.put(int.class, new CustomNumberEditor(Integer.class, false));
this.defaultEditors.put(Integer.class, new CustomNumberEditor(Integer.class, true));
this.defaultEditors.put(long.class, new CustomNumberEditor(Long.class, false));
this.defaultEditors.put(Long.class, new CustomNumberEditor(Long.class, true));
this.defaultEditors.put(float.class, new CustomNumberEditor(Float.class, false));
this.defaultEditors.put(Float.class, new CustomNumberEditor(Float.class, true));
this.defaultEditors.put(double.class, new CustomNumberEditor(Double.class, false));
this.defaultEditors.put(Double.class, new CustomNumberEditor(Double.class, true));
this.defaultEditors.put(BigDecimal.class, new CustomNumberEditor(BigDecimal.class, true));
this.defaultEditors.put(BigInteger.class, new CustomNumberEditor(BigInteger.class, true));

/**
 * Parse the Number from the given text, using the specified NumberFormat.
 */
@Override
public void setAsText(String text) throws IllegalArgumentException {
  if (this.allowEmpty && !StringUtils.hasText(text)) {
    // Treat empty String as null value.
    setValue(null);
  }
  else if (this.numberFormat != null) {
    // Use given NumberFormat for parsing text.
    setValue(NumberUtils.parseNumber(text, this.numberClass, this.numberFormat));
  }
  else {
    // Use default valueOf methods for parsing text.
    setValue(NumberUtils.parseNumber(text, this.numberClass));
  }
}