问题：请求异常只体现在日志中，如下面的第三行日志就是日志，有体现 carrier 字段是错误的。
如果在 response 里面获取，只能获取到 bad request ，没有具体的某个字段的错误。
请问，我如何获取到日志里面的报错，然后在自己写的代码里面获取到这个报错，自己打印出来。
1 ，
```
请求框架是，Apache HttpClient
org.apache.httpcomponents
4.5.6
HttpClient
```
```
17:33:50.629 [main] DEBUG org.apache.http.wire - http-outgoing-0 << "Connection: close[\r][\n]"
17:33:50.629 [main] DEBUG org.apache.http.wire - http-outgoing-0 << "[\r][\n]"
17:33:50.629 [main] DEBUG org.apache.http.wire - http-outgoing-0 << "{"errors":{"error":[{"code":"INVALID_REQUEST_CONTENT.GMP_ORDER_API","field":"carrier","description":"Unsupported carrier 'Fedex' was specified in line number 1. Only pre-defined names are allowed for 'carrier.' For a list of acceptable carriers, see https://developer.walmart.com/api/us/mp/orders#operation/shippingUpdates . If you select 'otherCarrier' you must also provide the tracking URL.","info":"Request content is invalid.","severity":"ERROR","category":"DATA","errorIdentifiers":{"entry":[]}}]}}"
17:33:50.629 [main] DEBUG org.apache.http.headers - http-outgoing-0 << HTTP/1.1 400 Bad Request
17:33:50.629 [main] DEBUG org.apache.http.headers - http-outgoing-0 << Accept-Ranges: bytes
```
2 ，如果换成 resttemplate ，那么直接连日志也没有了。。response 和上述一样
我将日志等级修改 debug ，也是没有日志，只有 response 。
问题：如开头
