java-money - 没有加载 MonetaryAmountsSingletonSpi

Question

pom.xml 中添加的依赖:

<dependency>
    <groupId>javax.money</groupId>
    <artifactId>money-api</artifactId>
    <version>1.0.3</version>
</dependency>

相关代码:

MonetaryAmount mon = Monetary.getDefaultAmountFactory()
                        //getCurrency() returns String
                        .setCurrency(amount.getCurrency())
                        //getContent() returns BigDecimal
                        .setNumber(amount.getContent())
                        .create();

单元测试时出现异常:

javax.money.MonetaryException: No MonetaryAmountsSingletonSpi loaded.

at javax.money.Monetary.lambda$getDefaultAmountFactory$13(Monetary.java:291)

Answer 1

JavaMoney 被分成单独的 API 和实现包，但您只将 API 添加到 POM。您还需要一个实现，例如引用实现:

<dependency>
  <groupId>org.javamoney</groupId>
  <artifactId>moneta</artifactId>
  <version>1.2.1</version>
  <type>pom</type>
</dependency>