杰克逊反序列化：未被认可的领域 [英] Jackson Deserialization: unrecognized field

问题描述

从教程中我得知这应该有用（简化示例）：

From the tutorial I had the impression that this should work (simplified example):

public class Foo {
    private String bar;
    public String getBar() {
        return bar;
    }
    public void setBar(String bar) {
        this.bar = bar;
    }
    public static class Qux {
        private String foobar;
        public String getFoobar() {
            return foobar;
        }
        public void setFoobar(String foobar) {
            this.foobar = foobar;
        }
    }
}
...

String in = "{ \"bar\": \"123\", \"qux\" : {\"foobar\": \"234\"}}";
ObjectMapper mapper = new ObjectMapper();
Foo obj = mapper.readValue(in, Foo.class);

然而，我收到错误

UnrecognizedPropertyException: Unrecognized field "qux" (Class Foo), not marked as ignorable

我正在运行2.2.2

I'm running 2.2.2

推荐答案

如果你拉 Qux它会工作课程 Foo

public class Foo {
    private String bar;

    // added this
    private Qux qux;

    public String getBar() {
        return bar;
    }
    public void setBar(String bar) {
        this.bar = bar;
    }

    // added getter and setter
    public Qux getQux() {
        return qux;
    }
    public void setQux(Qux qux) {
        this.qux = bar;
    }
}

public static class Qux {
    private String foobar;
    public String getFoobar() {
        return foobar;
    }
    public void setFoobar(String foobar) {
        this.foobar = foobar;
    }
}

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