spring MonetaryAmountFormatter 源码
spring MonetaryAmountFormatter 代码
文件路径：/spring-context/src/main/java/org/springframework/format/number/money/MonetaryAmountFormatter.java
/*
* Copyright 2002-2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.format.number.money;
import java.util.Locale;
import javax.money.MonetaryAmount;
import javax.money.format.MonetaryAmountFormat;
import javax.money.format.MonetaryFormats;
import org.springframework.format.Formatter;
import org.springframework.lang.Nullable;
/**
* Formatter for JSR-354 {@link javax.money.MonetaryAmount} values,
* delegating to {@link javax.money.format.MonetaryAmountFormat#format}
* and {@link javax.money.format.MonetaryAmountFormat#parse}.
*
* @author Juergen Hoeller
* @since 4.2
* @see #getMonetaryAmountFormat
*/
public class MonetaryAmountFormatter implements Formatter<MonetaryAmount> {
@Nullable
private String formatName;
/**
* Create a locale-driven MonetaryAmountFormatter.
*/
public MonetaryAmountFormatter() {
}
/**
* Create a new MonetaryAmountFormatter for the given format name.
* @param formatName the format name, to be resolved by the JSR-354
* provider at runtime
*/
public MonetaryAmountFormatter(String formatName) {
this.formatName = formatName;
}
/**
* Specify the format name, to be resolved by the JSR-354 provider
* at runtime.
* <p>Default is none, obtaining a {@link MonetaryAmountFormat}
* based on the current locale.
*/
public void setFormatName(String formatName) {
this.formatName = formatName;
}
@Override
public String print(MonetaryAmount object, Locale locale) {
return getMonetaryAmountFormat(locale).format(object);
}
@Override
public MonetaryAmount parse(String text, Locale locale) {
return getMonetaryAmountFormat(locale).parse(text);
}
/**
* Obtain a MonetaryAmountFormat for the given locale.
* <p>The default implementation simply calls
* {@link javax.money.format.MonetaryFormats#getAmountFormat}
* with either the configured format name or the given locale.
* @param locale the current locale
* @return the MonetaryAmountFormat (never {@code null})
* @see #setFormatName
*/
protected MonetaryAmountFormat getMonetaryAmountFormat(Locale locale) {
if (this.formatName != null) {
return MonetaryFormats.getAmountFormat(this.formatName);
}
else {
return MonetaryFormats.getAmountFormat(locale);
}
}
}
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