無法將json字符串解析為通用Java對象

Question

我正在使用jersey網絡服務。 像這樣的下面是我在球衣客戶端收到的json字符串

{"license":"12345","dimRequirement":[{"alternateId":"AlternateID","classificati‌​on":"1"}] }

但是當我解析它給錯誤。我用傑克遜進行解析

    Unrecognized field "dimRequirement" (Class com.vxl.AppObject), not marked as ignorable
at [Source: java.io.StringReader@7be6f06c; line: 1, column: 49] (through reference chain: com.vxl.appanalytix.AppObject["dimRequirement"])
    at org.codehaus.jackson.map.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:53)
    at org.codehaus.jackson.map.deser.StdDeserializationContext.unknownFieldException(StdDeserializationContext.java:244)
    at org.codehaus.jackson.map.deser.StdDeserializer.reportUnknownProperty(StdDeserializer.java:589)
    at org.codehaus.jackson.map.deser.StdDeserializer.handleUnknownProperty(StdDeserializer.java:575)
    at org.codehaus.jackson.map.deser.BeanDeserializer.handleUnknownProperty(BeanDeserializer.java:684)
    at org.codehaus.jackson.map.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:515)
    at org.codehaus.jackson.map.deser.BeanDeserializer.deserialize(BeanDeserializer.java:351)
    at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2131)
    at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1402)
    at com.vxl.CheckJersy.main(CheckJersy.java:56)

我嘗試通過添加類型引用進行解析

new ObjectMapper().readValue(
                output,new TypeReference<AppObject<DimRequirement>>() { } );

通用類

    @XmlRootElement
@XmlSeeAlso({ DimRequirement.class})
    public class AppObject<T> implements Serializable {

        private List<T> list;
        private String license;

        public AppObject() {
            list = new ArrayList<T>();

        }

        public AppObject(List<T> list) {
            this.list = list;
        }

        @XmlAnyElement(lax = true)
        public List<T> getList() {
            return list;
        }

        public void setList(List<T> list) {
            this.list = list;
        }

        public String getLicense() {
            return license;
        }

        public void setLicense(String license) {
            this.license = license;
        }

    }

服務我想使用相同的服務超過一個POST請求返回AppObject<xxx>,AppObject<yyy>

@POST
    @Consumes({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
    @Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
    @Path("/getreq")
    @Override
    public AppObject getAllByClientNIsCurrent(
            AppObject<DimRequirement> appObject) {
        List<DimRequirement> dimreqlist = dimRequirementDao
                .getAllByClientNIsCurrent(appObject.getClientKey());
        AppObject<DimRequirement> appObject = new AppObject<DimRequirement>();
        appObject.setList(dimreqlist);
        return appObject;
    }

Answer 1

您的AppObject類具有JSON中不存在的字段。 您需要使該類具有傑克遜注釋，以使其可以忽略。

Answer 2

抱歉，關於我的其他答案，請忽略它。

我讓您的代碼完全按原樣工作。 只需將變量“列表”命名為“ dimRequirement”即可使自動映射起作用。 您還需要為此修改getter和setter，因為某些Jackson設置可以使庫使用它們。