Java 杰克逊';s mixin类没有';别耍花招:虫子还是我做错了什么?

Java 杰克逊';s mixin类没有';别耍花招:虫子还是我做错了什么?,java,jackson,deserialization,mixins,Java,Jackson,Deserialization,Mixins,这是杰克逊2.3.3。我最近在杰克逊中学到了我正试图把它应用到课堂上。然而,到目前为止还没有成功。所讨论的类是一个静态类,可以转换为另一个类: public static class Report { // Some non relevant public static final fields, then: public final int totalRuns; public final int totalInvocations; public final i

这是杰克逊2.3.3。我最近在杰克逊中学到了我正试图把它应用到课堂上。然而,到目前为止还没有成功。所讨论的类是一个静态类,可以转换为另一个类:

public static class Report
{
    // Some non relevant public static final fields, then:

    public final int totalRuns;
    public final int totalInvocations;
    public final int totalMatches;
    public final int totalMismatches;
    public final double matchShare;
    public final int reinvocations;
    public final int rematches;
    public final int remismatches;
    public final double reinvocationShare;
    public final long totalNanoTime;
    public final List<RuleReport> ruleReports;

    public Report(final int totalRuns, final int totalMatches,
        final int totalMismatches, final int rematches,
        final int remismatches, final long totalNanoTime,
        final List<RuleReport> ruleReports)
    {
        this.totalRuns = totalRuns;
        this.totalInvocations = totalMatches + totalMismatches;
        this.totalMatches = totalMatches;
        this.totalMismatches = totalMismatches;
        this.matchShare = (double) totalMatches / (double) totalInvocations;
        this.reinvocations = rematches + remismatches;
        this.rematches = rematches;
        this.remismatches = remismatches;
        this.reinvocationShare = (double) reinvocations
            / (double) totalInvocations;
        this.totalNanoTime = totalNanoTime;
        this.ruleReports = ruleReports;
    }
    // Other, non relevant methods
}
我真的不明白;我确实用
@JsonCreator
注释了mixin类的构造函数,到目前为止,它一直对我“正常”反序列化有效(这是我第一次尝试mixin)

这是杰克逊的错误还是我做错了什么


编辑:
main

public static void main(final String... args)
    throws IOException
{
    final ObjectMapper mapper = new ObjectMapper()
        .configure(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS, true);
    mapper.registerModule(GrappaModule.INSTANCE);

    final Closer closer = Closer.create();
    final InputStream in;

    try {
        in = closer.register(ProfilingReportMixin.class.
            getResourceAsStream("/profilingReports/test.json"));
        if (in == null)
            throw new IOException("resource not found");
        final ProfilingParseRunner.Report report
            = mapper.readValue(in, ProfilingParseRunner.Report.class);
        mapper.writerWithDefaultPrettyPrinter()
            .writeValue(System.out, report);
    } finally {
        closer.close();
    }
}
以及
模块

public final class GrappaModule
    extends SimpleModule
{
    private static final Version VERSION = new Version(1, 0, 0,
        "beta.5-SNAPSHOT", "com.github.parboiled1", "grappa");

    public static final Module INSTANCE = new GrappaModule();

    private GrappaModule()
    {
        super("grappa", VERSION);
    }

    @Override
    public void setupModule(final SetupContext context)
    {
        context.setMixInAnnotations(ProfilingParseRunner.RuleReport.class,
            RuleReportMixin.class);
        context.setMixInAnnotations(ProfilingParseRunner.Report.class,
            ProfilingReportMixin.class);
    }
}

确保mixin类上的ctor签名与目标类上的ctor签名匹配。您的目标类ctor将totalNanoTime作为long,但您的mixin ctor将totalNanoTime作为int

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这太不可思议了。

确保mixin类上的ctor签名与目标类上的ctor签名匹配。您的目标类ctor将totalNanoTime作为long,但您的mixin ctor将totalNanoTime作为int

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太令人惊讶了。

当你把
RuleReport
Report
拉到他们自己的文件中时会发生什么事?@geo而且,我的目标并不是要把他们移走,确切地说……我明白了。然而,我现在不知道这样的事情有多有效。这就是我问的原因,所以我们有一种感觉,如果这是杰克逊不能处理的事情,或者看看你是否有错误的配置something@geoand错误配置:/5参数是
,而不是
int
。啊。这很简单:)当你把
RuleReport
Report
拉到它们自己的文件中时会发生什么呢?@geo而且,我们的目标并不是把它们移走,确切地说……我明白了。然而,我现在不知道这样的事情有多有效。这就是我问的原因,所以我们有一种感觉,如果这是杰克逊不能处理的事情,或者看看你是否有错误的配置something@geoand错误配置:/5参数是
,而不是
int
。啊。这很容易:)
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