[BUG]java.util.Collections$UnmodifiableSet反序列化异常

[cycle2zhou]

问题描述

不可变集合反序列化异常

环境信息

请填写以下信息：

• OS信息： MacBookPro18,2 32 GB
• JDK信息： OpenJDK Runtime Environment (Zulu 8.70.0.23-CA-macos-aarch64) (build 1.8.0_372-b07)
• 版本信息：2.0.31

重现步骤

模型：

@Data
@Schema(description = "登录用户信息")
public class LoginUser implements Serializable {
    private static final long serialVersionUID = 1462777779589266417L;

    @Schema(title = "登录名")
    private String name;

    @Schema(title = "真实名称")
    private String realName;

    @Schema(title = "所属组织ID")
    private Long orgId;

    @Schema(title = "用户权限角色列表")
    private Set<Long> authorities;

    /**
     * 设置权限角色列表
     *
     * @param authorities 权限角色集合
     */
    public void setAuthorities(Set<Long> authorities) {
        if (ObjectUtil.isEmpty(authorities)) {
            return;
        }
        this.authorities = Collections.unmodifiableSet(authorities);
    }
}

测试方法：

public static void main(String[] args) {
        JSON.mixIn(LoginUser.class, LoginUserMixin.class);
        LoginUser loginUser = new LoginUser();
        loginUser.setName("张三");
        loginUser.setRealName("zhangsan");
        loginUser.setAuthorities(CollUtil.newHashSet(1L, 2L));
        byte[] asd = JSONB.toBytes(loginUser, JSONWriter.Feature.WriteClassName,
                                   JSONWriter.Feature.FieldBased,
                                   JSONWriter.Feature.ErrorOnNoneSerializable,
                                   JSONWriter.Feature.ReferenceDetection,
                                   JSONWriter.Feature.WriteNulls,
                                   JSONWriter.Feature.NotWriteDefaultValue,
                                   JSONWriter.Feature.NotWriteHashMapArrayListClassName,
                                   JSONWriter.Feature.WriteNameAsSymbol);
        ContextAutoTypeBeforeHandler contextAutoTypeBeforeHandler = new ContextAutoTypeBeforeHandler("java.util.Collections$UnmodifiableSet",
                                                                                                     "com.kt.data.base.models.app.LoginUser");
        LoginUser as = JSONB.parseObject(asd, LoginUser.class, contextAutoTypeBeforeHandler,
                                         JSONReader.Feature.UseDefaultConstructorAsPossible,
                                         JSONReader.Feature.ErrorOnNoneSerializable,
                                         JSONReader.Feature.IgnoreAutoTypeNotMatch,
                                         JSONReader.Feature.UseNativeObject,
                                         JSONReader.Feature.FieldBased);
        System.out.println("aaa");
    }

尝试过使用mixin为属性独立设置反序列化方法，无效
反序列化类

public class LoginUserFastJsonDeserializer implements ObjectReader<Set<Long>> {


    @Override
    public Set<Long> readObject(JSONReader jsonReader, Type fieldType, Object fieldName, long features) {
        if (jsonReader.isNull()) {
            return null;
        }
        if (jsonReader.nextIfNull()) {
            return null;
        }
        for (; ; ) {
            if (jsonReader.nextIfObjectEnd()) {
                break;
            }
            String field = jsonReader.readFieldName();
            if (ObjectUtil.isEmpty(field)) {
                continue;
            }


            String aa = jsonReader.readString();
            System.out.println("");

        }
        return null;
    }

    @Override
    public Set<Long> readJSONBObject(JSONReader jsonReader, Type fieldType, Object fieldName, long features) {
        return readObject(jsonReader, fieldType, fieldName, features);
    }
}

mixin类

public abstract class LoginUserMixin {
    @JSONField(deserializeUsing = LoginUserFastJsonDeserializer.class)
    private Set<Long> authorities;
}

目前是设置到字段上上反序列化无效，根本不进方法；设置到类上有效果但是没有反序列化对象的demo不知道该怎么做

期待的正确结果

正常序列化LoginUser对象中authorities属性

相关日志输出

附加信息

dubbo3.2.1开始使用fastjson2，重升级后开始出现该问题，测试方法摘自FastJson2Serialization

[wenshao]

https://github.com/alibaba/fastjson2/releases/tag/2.0.33
请用新版本