Question

我使用java 8和以下spring规范：

<spring.version>4.2.3.RELEASE</spring.version>
<spring.security.version>4.0.3.RELEASE</spring.security.version>
<spring.data.version>1.8.1.RELEASE</spring.data.version>

我有一个显然有_id的文档，它工作得很好，但我有另一个字段存储另一个_id的引用，这是我期望的JSON

{
    "_id" : ObjectId("56c8f330d4c65e543ceac8de"),
    "companyId" : ObjectId("56c8f330d4c65e543ce8c8de"),
    "name" : "COMPANY S.R.L",
    more fields......
}

我创建了以下转换器：

 @Component
   public class PurchaseWriterConverter implements Converter<Purchase, DBObject>
   {
       @Override public DBObject convert(Purchase source)
        {
        DBObject dbo = new BasicDBObject();
        dbo.put("_id", source.getId());
        **ObjectId objCompany = new ObjectId(source.getCompany().toString(16));
        dbo.put("company", objCompany);**
        dbo.put("supplier", source.getSupplier());
        dbo.put("status", source.getStatus().toString());
        dbo.put("attendant", source.getAttendant());
        dbo.put("cashier", source.getCashier());

        List<Object> orders = new BasicDBList();

        for (OrderWrapper order : source.getOrders())
        {
            DBObject orderDBObject = new BasicDBObject();
            orderDBObject.put("description", order.getDescription());
            orderDBObject.put("basePrice", order.getBasePrice());
            orderDBObject.put("grossWeight", order.getGrossWeight());
            orderDBObject.put("netWeight", order.getNetWeight());
            orderDBObject.put("subtotal", order.getSubtotal());
            orderDBObject.put("totalWeight", order.getTotalWeight());
            orders.add(orderDBObject);
        }
        dbo.put("orders", orders);
        dbo.put("createDate", source.getCreateDate());
        dbo.put("updateDate", source.getUpdateDate());
        dbo.put("approvedBy", source.getApprovedBy());
        dbo.put("createDate", source.getCreateDate());
        dbo.put("updateDate", source.getUpdateDate());
        dbo.removeField("_class");

        return dbo;
    }
}

以下行无效

dbo.put（＆＃34; _id＆＃34;，source.getId（））; ** ObjectId objCompany = new ObjectId（source.getCompany（）。toString（16））;

所以，我尝试创建另一个转换器，以便将BigInteger转换为ObjectId，就像这样

公共类BigIntegerToObjectIdConverter实现Converter {

@Override
public ObjectId convert(BigInteger source) {
    return source == null ? null : new ObjectId(source.toString());
}

}

但是我得到了同样的错误：

org.springframework.core.convert.ConversionFailedException: Failed to convert from type com.xxxxxxxxxxx.entity.Purchase to type com.mongodb.DBObject for value 'Purchase{company=1, orders=[com.xxxxxxx.equilibrium.wrapper.OrderWrapper@9cd3f65], supplier=26857458392532697059830357595, approvedBy='', status=TO_BE_APPROVED, attendant='User Admin', cashier=''}'; nested exception is java.lang.IllegalArgumentException: invalid ObjectId [1]

我作为biginteger发送的值是＆＃34; 1＆＃34;。

任何人都可以给我一些关于如何将BigInteger转换为ObjectId或建议不同内容的指示。

Answer 1

我刚才在这里回答了类似的问题https://stackoverflow.com/a/46508892/4660481

有效的demand <- ts( c(39.8, 33.5, 40.6, 23.6, 11.9, 12.3, 6.2, 17.1, 10.8, 18, 1, -10.7, -10.4, -16.5, -5.6, -11.9, -4.7, -21.7, -33.4, -33.1, -39.2, -28.2, -34.6, -27.4, -44.4, -56.1, -55.7, -61.8, -50.9, -57.2, -50.1), frequency = 7 ) plot(demand)可以由正好24个十六进制字符构成。在这种情况下，您的ObjectId将返回.toString(16)，其长度不是24。在这种情况下，您需要的是"1"。您可以通过使用0填充来解决此问题：

"000000000000000000000001"

如何使用弹簧数据将BigInteger转换为Objectid

1 个答案: