我收到下面的错误消息,有人能帮助或建议如何最好地调试它吗?

无法反序列化的实例

java.lang.String

超出起始值的对象

[来源:(pushbackinputstream)处的令牌;行:1,列:37610]

(通过参考链:

CopyToList[[产品] ] -gt;java. U.L.AyayList[ 23 ] -&G.M.Mult.产品[“价格”] -& com;COM.价格(“现在”))

我正在尝试从RESTAPI调用反序列化产品对象。在我添加代码来反序列化price子类之前,代码一直工作得很好。如下所示:

"price": {

"was": "",

"then1": "",

"then2": "",

"now": "59.00",

"uom": "",

"currency": "GBP"

},

我的价格POJO如下:

public class Price {

@JsonProperty("was")

String was;

@JsonProperty("then1")

String then1;

@JsonProperty("then2")

String then2;

@JsonProperty("now")

String now;

@JsonProperty("uom")

String uom;

@JsonProperty("currency")

String currency;

public Price() {

//blank constructor for JSON

}

@Override

public String toString() {

return "Price{" +

"was='" + was + '\'' +

", then1='" + then1 + '\'' +

", then2='" + then2 + '\'' +

", now='" + now + '\'' +

", uom='" + uom + '\'' +

", currency='" + currency + '\'' +

'}';

}

}

我编写了一个JUnit测试来尝试模拟错误,但它在我的测试中有效,

@Test

public void shouldConvertJsonProductListIntoPrice() {

ObjectMapper objectMapper = new ObjectMapper();

String content3 = "{\"products\": [{\"productId\": \"3525085\",\"title\": \"hush Tasha Vest Dress\", " +

"\"price\": {\"was\": \"\",\"then1\": \"\",\"then2\": \"\",\"now\": \"59.00\",\"uom\": \"\",\"currency\": \"GBP\"}, " +

"\"colorSwatches\": [{\"basicColor\": \"Red\",\"skuId\": \"237494589\"},{\"basicColor\": \"Blue\",\"skuId\": \"237494562\"}] " +

"}]}";

JavaType valueType = objectMapper.constructType(ProductList.class);

ProductList readValue;

try {

readValue = objectMapper.readValue(content3, valueType);

assertEquals("3525085", readValue.getProductList().get(0).productId);

assertEquals("hush Tasha Vest Dress", readValue.getProductList().get(0).title);

assertEquals("", readValue.getProductList().get(0).price.then1);

assertEquals("59.00", readValue.getProductList().get(0).price.now);

assertEquals("Blue", readValue.getProductList().get(0).colorSwatches[1].basicColor);

assertEquals("237494562", readValue.getProductList().get(0).colorSwatches[1].skuId);

} catch (Exception e) {

e.printStackTrace();

fail();

}

}

如果我对“now”字段进行注释,那么我的restapi调用工作得很好,我看不到异常。

所以看起来“now”字段有问题,我注意到它试图将“59.00”转换为字符串。这可能是fasterXML转换器的问题吗?我需要帮忙吗?

产品类如下(尽管这是我从API调用中接收到的字段列表减少了很多)。

public class Product {

@JsonProperty("productId")

String productId;

@JsonProperty("title")

String title;

@JsonProperty("colorSwatches")

ColorSwatch [] colorSwatches;

@JsonProperty("price")

Price price;

public Product(){

// blank required for Jackson

}

public Product(String productId, String title, ColorSwatch[] colorSwatches, Price price){

this.productId = productId;

this.title = title;

this.colorSwatches = colorSwatches;

this.price = price;

}