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我有一个REST回调服务必须按以下格式使用XML:Spring REST:适用于嵌套XML请求正文的构造函数吗?
<SearchRequest>
<SearchCriteria>
<Param1></Param2>
<Param2></Param2>
</SearchCriteria>
</SearchRequest>
实际的XML具有“标准”的范围内约32个参数,但是这给了基本思路。
我创建了一个SearchRequest类,它具有属性searchCriteria和具有param1和param2的SearchCriteria类。
我的REST控制器类看起来是这样的:
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/acme/request/search")
public class AcmeCallbackController {
@RequestMapping(method = RequestMethod.POST, consumes = "application/xml")
public ResponseEntity<String> postAcmeSearch(@RequestBody SearchRequest body) {
StringBuffer resultBuffer = new StringBuffer(2048);
// implementation code here, 'body' now expected to be a SearchRequest object contructed from request body XML
return new ResponseEntity<String>(resultBuffer.toString(), HttpStatus.OK);
}
当我测试上面的服务,我收到以下错误响应:
`{ "timestamp": 1514390248822,
"status": 400,
"error": "Bad Request",
"exception": org.springframework.http.converter.HttpMessageNotReadableException",
"message": "JSON parse error: Can not construct instance of SearchRequest: no suitable constructor found, can not deserialize from Object value (missing default constructor or creator, or perhaps need to add/enable type information?); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not construct instance of SearchRequest: no suitable constructor found, can not deserialize from Object value (missing default constructor or creator, or perhaps need to add/enable type information?)\n at [Source: [email protected]; line: 2, column: 3]",
"path": "/acme/request/search" }`
有谁知道合适的构造和/或注释适用于SearchRequest,以便XML请求正确地反序列化?我在所有getter和setter上都有@JsonProperty(“{Attribute}”),其中{Attribute}是带有初始上限以匹配XML元素名称的属性的名称,以及一个为每个属性值。
TIA, 埃德
你可以分享你的SearchRequest类,你有没有在类中定义的任何参数化构造函数,如果是,那么也添加默认构造函数。 –
寻找JsonMappingExceptions的解决方案,就像https://stackoverflow.com/questions/7625783/jsonmappingexception-no-suitable-constructor-found-for-type-simple-type-class?rq=1,https:// stackoverflow .COM /问题/ 12750681 /不能-构建实例 - 的 - 杰克逊 – tkruse