The bean 'xxxxx', defined in null, could not be registered. A bean with that name has already ...

這個異常是使用 spring-data-elasticsearch 并且內建 spring-data-jpa 時遇到的異常

Description:

The bean 'productBrandESRepository', defined in null, could not be registered. A bean with that name has already been defined in null and overriding is disabled.

Action:

Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true

           

百度了半天沒有結果

在官方文檔上看到了如下資訊（已經過goole翻譯）

這個就說的很明白了，你放一起之後沒有指定包，es就不知道這個綁定的到底是jpa的庫還是es得庫

然後我添加了如下代碼：

@Configuration
@EnableJpaRepositories(basePackages = "com.mall.market.repository.jpa")
@EnableElasticsearchRepositories(basePackages = "com.mall.market.repository.es")
public class ElasticSearchConfiguration {

}
           

 這個報錯問題就解決了。

但是還有别的坑啊：

1. elasticsearch 在6.x 之後得版本中一個index下隻能有一個type
2. 我得主鍵名并不是id ,于是報了以下異常

No id property found for class com.mall.market.entity.ProductBrand!
           

我的ProductBrand 實體類是這樣的

package com.mall.market.entity;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.data.elasticsearch.annotations.Document;

import javax.persistence.*;
import java.io.Serializable;

/**
 * @author lidai
 * @date 2019/7/12 14:46
 * <p>
 * 品牌資訊
 */
@Data
@Entity
@Table(name = "market_product_brand")
@NoArgsConstructor
@AllArgsConstructor
//聲明存儲于索引庫為mall_demo下，類型為ProductBrand
@Document(indexName = "mall_product_brand", type = "ProductBrand")
public class ProductBrand implements Serializable {

    private static final long serialVersionUID = 4066518364159966368L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "brand_id")
    private Long brandId;

    @Column(name = "brand_name")
    private String brandName;

    @Column(name = "telephone")
    private String telephone;

    @Column(name = "brand_web")
    private String brandWeb;

    @Column(name = "brand_desc")
    private String brandDesc;

    @Column(name = "brand_logo")
    private String brandLogo;

    @Column(name = "brand_status")
    private String brandStatus;

    @Column(name = "brand_order")
    private Integer brandOrder;


}

           

當我把 brandId 直接改成了id 這個異常就消失了，我也不清楚是為什麼。

還可以通過添加@Id注解解決

@org.springframework.data.annotation.Id//聲明es主鍵