@query，Repository中出错

Question

 @Autowired
private ClickService service;

/*
    i.e. information about fullname_client, id_banner sent to server from client
*/
@RequestMapping(value = "/sentemail", method = RequestMethod.POST)
@ResponseBody
public String sentClick(@RequestParam ("fullnameClient") String fullnameClient,@RequestParam ("idbanners") long idbanners) {

    return service.sent(fullnameClient, idbanners);
}

@Query("SELECT c.fullnameClient FROM Click AS c join c.idBanner Banners b WHERE b.idBanner = :idbanners AND c.fullnameClient = :fullnameClient")
String sent(@Param("fullnameClient") String fullnameClient, @Param("idbanners") long idbanners);

@Id
@Column(name = "id_click", unique = true, nullable = false)
@GeneratedValue(generator = "increment")
@GenericGenerator(name = "increment", strategy = "increment")
private long idClick;

@ManyToOne(fetch = FetchType.EAGER, cascade = {CascadeType.MERGE, CascadeType.PERSIST})
@JoinColumn(name = "id_banners", nullable = false)
private Banners idbanners;

@Column(name = "fullname_client", nullable = false, length = 50)
private String fullnameClient;

@Id
@Column(name = "id_banner", unique = true, nullable = false)
@GeneratedValue(generator = "increment")
@GenericGenerator(name = "increment", strategy = "increment")
private long idBanner;

@OneToMany(fetch = FetchType.EAGER, mappedBy = "banners")
private Set<Businessbanner> businessbanners;

@OneToMany(fetch = FetchType.EAGER, mappedBy = "idbanners")
private Set<Click> clicks;

错误

org.springframework.beans.factory.BeanCreationException：创建名为“Click Controller”的bean时出错：注入autowired依赖项失败；嵌套异常为org.springframework.beans.factory.beancreationexception：无法自动连接字段：private com.qoobico.remindme.server.service.clickservice com.qoobico.remindme.server.controller.clickcontroller.service；嵌套异常为org.springframework.beans.factory.BeanCreationException：创建名为“Click ServiceImpl”的bean时出错：注入autowired依赖项失败；嵌套异常为org.springframework.beans.factory.beancreationexception：无法自动连接字段：private com.qoobico.remendme.server.repository.clickrepository com.qoobico.remendme.server.service.clickserviceimpl.clickrepository；嵌套异常为org.springframework.beans.factory.BeanCreationException：创建名为“click repository”的bean时出错：调用init方法失败；嵌套异常为java.lang.IllegalArgumentException：方法public abstract java.lang.String com.qoobico.remindme.server.Repository.ClickRepository.Sent（java.lang.String,long）查询验证失败！

Answer 1

您的参数名称不同。试试看：

 @Query("SELECT c.fullnameClient FROM Click AS c join c.idbanners b WHERE b.idBanner = :idbanners AND c.fullnameClient = :fullnameClient")

    String sent(@Param("fullnameClient") String fullnameClient, @Param("idbanners ") long idbanners);

更新

好的，你的加入是错误的…而不是c加入c.idBanner。应该是c.idbanners。