No qualifying bean of type ‘com.codlz.sell.repository.ProductCategoryRepository’ available:

package com.codlz.sell.repository;

import com.codlz.sell.dataObjects.ProductCategory;
import org.springframework.data.jpa.repository.JpaRepository;

public interface ProductCategoryRepository extends JpaRepository<ProductCategory, Integer> {
}

@RunWith(SpringRunner.class)
@SpringBootTest
public class ProductCategoryRepositoryTest {

    @Autowired
    private ProductCategoryRepository repository;

    @Test
    public void findOneTest() {
       ProductCategory productCategory = repository.findOne(1);
       System.out.println(productCategory.toString());
    }
}

spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    username: root
    password: 123456
    url: jdbc:mysql://192.168.2.11/sell?characterEncoding=utf-8&useSSL=false
  jpa:
    show-sql: true

@Entity
public class ProductCategory {
    /*类目id*/
    @Id
    @GeneratedValue
    private Integer categoryId;

    /*类目名字*/
    private String categoryName;
    /*类目编号*/
    private Integer categoryType;

    public Integer getCategoryId() {
        return categoryId;
    }

    public void setCategoryId(Integer categoryId) {
        this.categoryId = categoryId;
    }

    public String getCategoryName() {
        return categoryName;
    }

    public void setCategoryName(String categoryName) {
        this.categoryName = categoryName;
    }

    public Integer getCategoryType() {
        return categoryType;
    }

    public void setCategoryType(Integer categoryType) {
        this.categoryType = categoryType;
    }

    @Override
    public String toString() {
        return "ProductCategory{" +
                "categoryId=" + categoryId +
                ", categoryName='" + categoryName + '\'' +
                ", categoryType=" + categoryType +
                '}';
    }
}