ArangoDB

Question

简单示例

@Data
@Document("product")
@Accessors(chain = true)
public class Product {
    @Id
    private String id;
    private BigDecimal cost;
}

ArangoDB 配置：

@Override
public Builder arango() {
    final Builder builder = new Builder();
    arangoDbConfig.getHosts().forEach(host -> builder.host(host.getHost(), host.getPort()));
    return builder
            .user(arangoDbConfig.getUser())
            .password(arangoDbConfig.getPassword())
            .registerModule(new VPackJdk8Module());
}

读取文档生成异常：

Invocation of init method failed; nested exception is org.springframework.data.mapping.model.MappingInstantiationException: Failed to instantiate java.math.BigDecimal using constructor NO_CONSTRUCTOR with arguments

依赖关系：

SpingBoot 1.5.9
Arangodb-spring-data 1.0.1
Velocypack-模块-jdk8 1.0.2

好吧，忘记BigDecimal映射到HashMap就好了。创建查询 (biggerThan/lessThan) 会很奇怪。我将数据类型更改为 Double.

Answer 1

您需要为包含BigDecimal 的class 定义JsonSerializer 和JsonDeserializer，因为ArangoDB 不支持该类型的数据。检查此 Arango 序列化程序文档：link

ArangoDB - BigDecimal

ArangoDB - BigDecimal

spring-boot