JavaBeanExecutable HV000254 缺少 Java 枚举的参数元数据

Question

我将 spring boot 应用程序从 1.5 升级到 2.3.5（使用 spring boot gradle 插件）。当 spring boot 应用程序启动时，我收到 4 次以下警告：

2020-11-05 13:29:19.432 WARN 3931 --- [nio-8080-exec-4] ohvipjavabean.JavaBeanExecutable : HV000254: FacetField(String, int, String, String, String, int, Class) 缺少参数元数据, 声明隐式或合成参数。如果多个参数具有相同的擦除，则方法参数的通用类型信息的自动解析可能会产生不正确的结果。要解决此问题，请使用“-parameters”标志编译您的代码。

我的 FacetField 枚举如下所示：

public enum FacetField {

    CONST_1("KEY", "ESFIELD", "RESOURCEKEY"),
    CONST_2("KEY", "ESFIELD", "RESOURCEKEY"),
    CONST_3("KEY", "ESFIELD", ""),

    CONST_4("KEY", "ESFIELD", "ESMAXFIELD", "RESOURCEKEY", Hours.class),
    CONST_5("KEY", "ESFIELD", "RESOURCEKEY", Experience.class),
    CONST_6("KEY", "ESFIELD", "", Distance.class);

    private String key;
    private String esField;
    private String esMaxField;
    private String resourcekey;
    private Class<? extends RangeFacet> rangeFacet;

    FacetField(final String key, final String esField, final String resourcekey) {
        this.key = key;
        this.esField = esField;
        this.resourcekey = resourcekey;
        this.rangeFacet = null;
    }

    FacetField(final String key, final String esField, final String resourcekey, final Class<? extends RangeFacet> rangeFacet) {
        this.key = key;
        this.esField = esField;
        this.resourcekey = resourcekey;
        this.rangeFacet = rangeFacet;
    }

    FacetField(final String key, final String esMinField, final String esMaxField, final String resourcekey, final Class<? extends RangeFacet> rangeFacet) {
        this.key = key;
        this.esField = esMinField;
        this.esMaxField = esMaxField;
        this.resourcekey = resourcekey;
        this.rangeFacet = rangeFacet;
    }


    public String getKey() {
        return key;
    }

    public String getEsField(final FieldProperty fieldProperty) {
        return esField + fieldProperty.getEsFieldProperty();
    }

    public String getEsMinField() {
        return esField;
    }

    public String getEsMaxField() {
        return esMaxField;
    }

    public String getResourcekey() {
        return resourcekey;
    }

    public enum Distance implements RangeFacet {

        FROM_0_TO_5(0d, 5d, "5"),
        FROM_0_TO_10(0d, 10d, "10"),
        FROM_0_TO_20(0d, 20d, "20"),
        FROM_0_TO_30(0d, 30d, "30"),
        FROM_0_TO_50(0d, 50d, "50");

        private final Double min;
        private final Double max;
        private final String selectableDescription;

        Distance(final Double min, final Double max, final String selectableDescription) {
            this.min = min;
            this.max = max;
            this.selectableDescription = selectableDescription;
        }

        @Override
        public Double getMin() {
            return this.min;
        }

        @Override
        public Double getMax() {
            return this.max;
        }

        @Override
        public String getSelectableDescription() {
            return this.selectableDescription;
        }
    }

    public enum Experience implements RangeFacet {

        TO_1(0d, 1d, "1"),
        FROM_1_TO_2(1d, 2d, "2"),
        FROM_2_TO_5(2d, 5d, "5"),
        FROM_5_TO_10(5d, 10d, "10"),
        FROM_10(10d, null, "10+");

        private final Double min;
        private final Double max;
        private final String selectableDescription;

        Experience(final Double min, final Double max, final String selectableDescription) {
            this.min = min;
            this.max = max;
            this.selectableDescription = selectableDescription;
        }

        @Override
        public Double getMin() {
            return this.min;
        }

        @Override
        public Double getMax() {
            return this.max;
        }

        @Override
        public String getSelectableDescription() {
            return this.selectableDescription;
        }
    }

    public enum Hours implements RangeFacet {

        FROM_0_TO_8(0d, 8d, "8"),
        FROM_9_TO_16(9d, 16d, "16"),
        FROM_17_TO_24(17d, 24d, "24"),
        FROM_25_TO_32(25d, 32d, "32"),
        FROM_33_TO_36(33d, 36d, "36"),
        FROM_37(37d, null, "40");

        private final Double min;
        private final Double max;
        private final String selectableDescription;
        
        Hours(final Double min, final Double max, final String selectableDescription) {
            this.min = min;
            this.max = max;
            this.selectableDescription = selectableDescription;
        }

        @Override
        public Double getMin() {
            return this.min;
        }

        @Override
        public Double getMax() {
            return this.max;
        }

        @Override
        public String getSelectableDescription() {
            return this.selectableDescription;
        }
    }

}

我唯一能找到与此相关的东西，是 github 上的这个 graal 问题：https : //github.com/oracle/graal/issues/1941

有人可以解释一下吗？

Answer 1

spring-boot-parent过去在2.2.xmaven-compiler-plugin版本之前设置了该标志。

您必须自己将标志添加到maven-compiler-plugin：

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.8.1</version>
            <configuration>
                <parameters>true</parameters>
            </configuration>
        </plugin>
    </plugins>
</build>

Answer 2

-paramaters另一个答案解释了如何通过使用Maven 中的标志进行编译来消除警告。使用 Spring Boot 2，您不再需要这样做（无论是使用 Maven 还是 Gradle）。

如果您仍然收到有关枚举常量的警告，这似乎是Hibernate Validator 的错误。