java - 对 Jersey 客户端的 POST 请求无法解码包含空数组的 JSON 对象？

Question

我正在运行一个 Jersey 服务器，当它收到 curl -X POST\的 POST 请求时
http://localhost:8080/ca/accountSettings\
-H '内容类型:application/json'\
-d'{
"socialAccountTypeId":"adqasocialaccount",
"imgUrl":"https://test.com/logo.png",
"descriptionDefault":"测试帐户",
"descriptionLangId":"EN",
"nameDefault":"社交帐户",
"nameLangId":"zh",
“类型”:[“测试”]，
"credentialsType":"OAUTH_20",
“市场协会”:[]
}' marketAssociation 字段被解码为“marketAssociation:[""]，而不是预期的空数组。其他所有内容都被正确解码。

我尝试将类中的 marketAssociation 数组初始化为空数组，但没有成功。

API路由

@POST
    @Path("/ca/accountSettings")
    public Response addAccountSettings(SocialAccountType socialAccountType)
    {
        String endpoint = "POST /ca/accountSettings";
        Response response = null;
        try
        {
            WCResponse wcResponse = this.sssApi.addSocialAccountType(socialAccountType);
catch (Exception e)
        {
            TestApi.log.error("Exception in " + endpoint, e.getMessage());
            response = response.error(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e.getMessage());
        }
    }

SocialAccountType 类

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "SocialAccountType", propOrder = {
    "socialAccountTypeId",
    "imgUrl",
    "descriptionDefault",
    "descriptionLangId",
    "nameDefault",
    "nameLangId",
    "types",
    "credentialsType",
    "marketAssociation",
    "creationTime"
})
@XmlRootElement(name = "SocialAccountType")
public class SocialAccountType {

    @XmlElement(required = true)
    protected String socialAccountTypeId;
    @XmlElement(required = true)
    protected String imgUrl;
    @XmlElement(required = true)
    protected String descriptionDefault;
    @XmlElement(required = true)
    protected String descriptionLangId;
    @XmlElement(required = true)
    protected String nameDefault;
    @XmlElement(required = true)
    protected String nameLangId;
    protected List<String> types;
    @XmlElement(required = true)
    protected CredentialsType credentialsType;
    protected List<String> marketAssociation;
    protected String creationTime;
}

该类有 getter 和 setter，但它们是通用的，我认为不相关。

我希望 marketAssociation 应该只是一个空数组marketAssociation: [] 而不是 marketAssociation:[""]

这是我正在使用的自定义 JAXB 上下文解析器

@Provider
@Singleton
public class JAXBContextResolver implements ContextResolver<JAXBContext>
{

    private JAXBContext context;
    @SuppressWarnings("rawtypes")
    private Class[] types = { Device.class, EndUser.class, SocialAccountType.class, SocialAccountTypeList.class };

    public JAXBContextResolver() throws Exception
    {
        this.context = new JSONJAXBContext(JSONConfiguration
                                                   .mapped()
                                                   .arrays("userList", "deviceList", "roles", "socialAccountType", "marketAssociation", "types")
                                                   .build(), types);
    }

    @Override
    @SuppressWarnings("rawtypes")
    public JAXBContext getContext(Class<?> objectType)
    {
        for (Class c : types)
        {
            if (c.equals(objectType))
                return (context);
        }
        return (null);
    }
}

Answer 1

您使用哪种 JSON 处理器？据我所知，默认值(JAXB)对空数组有一些奇怪的作用，而切换到 Jackson 通常可以解决此类问题。请参阅此处的第三个答案:

Cannot unmarshal a JSON array of objects using Jersey Client