嵌套类字段的jackson自定义值

Question

大家好，我正在用@JSONProperty的自定义名称序列化嵌套对象。所以，这里是：

public class Wrapper {

public final Payload payload;

public Wrapper(String name){
this.payload = new Payload(name);
}    

public static final class Payload{
@JsonProperty("customName")
public final String name;

@JsonCreator
public Payload(@JsonProperty ("customName") String name){

this.name = name;
}
}


}

所以，在每一个测试中，我都看到非自定义的名称--“name”。我用@JsonProperty添加了getter,但没有成功。

我的测试类：

@JsonTest
public class SerializeWrapperTest {


    @Test
    void whenSerialiseThanCorrect() throws IOException {
        ObjectMapper objectMapper = new ObjectMapper();
        Wrapper wrapper =
                new Wrapper("name");
        String json = objectMapper.writeValueAsString(wrapper);
        Assertions.assertEquals("{"payload":{"customName":"name"}}",json);
    }
}

测试结果：预期：{“Payload”：{“CustomName”：“Name”}}实际：{“Payload”：{“Name”：“Name”}}

org.opentest4j.AssertionFailedError。

编辑过。

Answer 1

如果我理解正确的话，您需要在json中为字段“name”设置一个自定义属性。为此你要做的是-

     public class Wrapper {

    public final Payload payload;

    public Wrapper(String name){
        this.payload = new Payload(name);
    }

    public static final class Payload{
        @JsonProperty("customName")
        public final String name;

        public Payload(String name){

            this.name = name;
        }
    }

JUnit-

public class WrapperTest {

    @Before
    public void setUp() throws Exception {
    }

    @After
    public void tearDown() throws Exception {
    }

    @Test
    public void whenSerialiseThanCorrect() throws IOException {
        ObjectMapper objectMapper = new ObjectMapper();
        Wrapper wrapper =
                new Wrapper("Ajeet");
        String json = objectMapper.writeValueAsString(wrapper);
        System.out.println(json);
    }
}

}