Bean验证约束模式：匹配N个数字的regexp在XML中不起作用

Question

Bean验证约束模式（如果匹配XML数字，则匹配N位正则表达式）不起作用。例如，

public class Foo {
    @Pattern(regexp="\\d{10}")
    private String phoneNumber;
}

phoneNumber: 1234567890

注释工作。

XML：

<bean class="Foo">
        <field name="phoneNumber">
            <constraint annotation="javax.validation.constraints.Pattern">
                <element name="regexp">\\d{10}</element>
            </constraint>
        </field>
</bean>

错误：

javax.validation.ConstraintViolationException: phoneNumber: must match the following regular expression: \d{10}

如果将模式更改为：

 <element name="regexp">\d{10}</element>

错误：

java.util.IllegalFormatConversionException: d != java.lang.String
    at java.util.Formatter$FormatSpecifier.failConversion(Formatter.java:4302)
    at java.util.Formatter$FormatSpecifier.printInteger(Formatter.java:2793)
    at java.util.Formatter$FormatSpecifier.print(Formatter.java:2747)
    at java.util.Formatter.format(Formatter.java:2520)
    at java.util.Formatter.format(Formatter.java:2455)
    at java.lang.String.format(String.java:2940)
    at org.apache.bval.util.Exceptions.lambda$create$1(Exceptions.java:49)
    at org.apache.bval.util.Exceptions.create(Exceptions.java:58)
    at org.apache.bval.util.Exceptions.create(Exceptions.java:49)
    at org.apache.bval.jsr.metadata.XmlBuilder.loadClass(XmlBuilder.java:531)
    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
    at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:545)
    at java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)

@Pattern(regexp="\\d{10}")的等效XML是什么？

Answer 1

我不知道什么是正则表达式，但如果\d不起作用，我认为[0-9]起作用。

用途：

[0-9]{10}

而不是\\d{10}