尝试从rest api上的mongodb检索数据时出错
尝试从rest api上的mongodb检索数据时出错
提问于 2016-06-07 11:53:44
public class Record {
private DateTime timestamp;
private String filename;
private String cameraid;
public Record(String timestamp, String filename, String cameraid) {
this.timestamp = ISODateTimeFormat.dateTime().parseDateTime(timestamp);
this.filename = filename;
this.cameraid = cameraid;
}
//Getters & setters
(Model)
-----------------------------------------------------------------------------
public class RecordController {
@Autowired
private RecordRepository rep;
@RequestMapping(value="store")
public String camera (@RequestParam(required=true, value="ts") String timestamp,
@RequestParam(value="fn",required=true) String filename,
@RequestParam(value="cam",required=true) String cameraid)
{
try {
Record cam = new Record(timestamp,filename,cameraid);
rep.save(cam);
return "OK";
}catch(Exception ex){
String errorMessage;
errorMessage = ex + " <== error";
return ("error: " + ex.getMessage());}
}
@RequestMapping(value="li", method=RequestMethod.GET)
public @ResponseBody List<Record> getAll() {
return rep.findAll();
}
} (Controller)
----------------------------------------------------------------------------
import org.springframework.data.mongodb.repository.MongoRepository;
public interface RecordRepository extends MongoRepository<Record, String> {
} (Recpository)我得到的错误是：
Failed to instantiate hello.Record using constructor public hello.Record(java.lang.String,java.lang.String,java.lang.String) with arguments 2016-06-06T00:19:09.223+08:00,9d9fd7f8f4caec99bce9dff8f4644e41,000000006f4280af回答 1
Stack Overflow用户
发布于 2016-06-08 13:07:14
添加默认构造函数
public class Record {
private DateTime timestamp;
private String filename;
private String cameraid;
public Record(){} //default constructor
public Record(String timestamp, String filename, String cameraid) {
this.timestamp = ISODateTimeFormat.dateTime().parseDateTime(timestamp);
this.filename = filename;
this.cameraid = cameraid;
}
//getter and setter
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/37670178
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