org.springframework.beans.propertyeditors.CustomNumberEditor java code examples

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}

  @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));
  }
}

Javadoc

Property editor for any Number subclass such as Short, Integer, Long, BigInteger, Float, Double, BigDecimal. Can use a given NumberFormat for (locale-specific) parsing and rendering, or alternatively the default decode / valueOf / toString methods.

This is not meant to be used as system PropertyEditor but rather as locale-specific number editor within custom controller code, parsing user-entered number strings into Number properties of beans and rendering them in the UI form.

In web MVC code, this editor will typically be registered with binder.registerCustomEditor calls.

Most used methods

<init>
Create a new CustomNumberEditor instance, using the default valueOf methods for parsing and toString
getValue
setValue
Coerce a Number value into the required target class, if necessary.
getAsText
Format the Number as String, using the specified NumberFormat.
setAsText
Parse the Number from the given text, using the specified NumberFormat.

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How to useCustomNumberEditor in org.springframework.beans.propertyeditors

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How to use
CustomNumberEditor
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org.springframework.beans.propertyeditors