问题：

Spring Boot/MVC：考虑定义“pack”类型的bean。网站存储库。配置中的CustomerRepository

娄建义

2023-03-14

在我解释这个问题之前，我已经经历了导致我所面临的错误的类似线程。所以我看了看，没有一个解决方案是有用的，因此，我张贴了我自己的自定义问题。创建简单的Spring Boot/MVC项目时，我遇到以下错误：

说明：

包装中的现场cRepo。网站控制器。LandingPageController需要“pack”类型的bean。网站存储库。找不到CustomerRepository“”。

注入点具有以下注释：

@组织。springframework。豆。工厂注释。自动连线（必需=真）

措施：

考虑定义“pack”类型的bean。网站存储库。配置中的CustomerRepository。

配置我的Controller类和repo类后。下面我将附加代码和我的main。有人知道为什么这个错误仍然发生吗？我已经尝试了@组件、@服务（在我的服务类中）、@存储库标签......仍然不起作用。请帮助：

@Controller
public class LandingPageController {
    
    @Autowired
    private CustomerRepository cRepo;

    @GetMapping("")
    public String viewLandingPage() {
        return "index";
    }

    @GetMapping("/register")
    public String showRegistrationForm(Model model) {
        model.addAttribute("customer", new Customer());
        return "signup_form";
    }

    @PostMapping("/process_register")
    public String processRegister(Customer customer) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        String encodedPassword = passwordEncoder.encode(customer.getPassword());
        customer.setPassword(encodedPassword);
        cRepo.save(customer);

        return "register_success";
    }

    @GetMapping("/users")
    public String listUsers(Model model) {
        List<Customer> listUsers = cRepo.findAll();
        model.addAttribute("listUsers", listUsers);

        return "users";
    }

}

#############

public interface CustomerRepository extends JpaRepository<Customer, Long>{
    
    public Customer findByEmail(String email);

}

#############

public class CustomerService implements UserDetailsService {

    @Autowired
    private CustomerRepository cRepo;

    @Override
    public CustomerDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        Customer customer = cRepo.findByEmail(username);
        if (customer == null) {
            throw new UsernameNotFoundException("User not found");
        }
        return new CustomerDetails(customer);
    }

}

###########

@SpringBootApplication
@ComponentScan({"pack.website.controllers", "pack.website.repositories" })
public class ProjectApplication {

    public static void main(String[] args) {
        SpringApplication.run(ProjectApplication.class, args);
    }

}

共有2个答案

缪兴腾

2023-03-14

使用服务层@服务注释可能有助于以下是控制器部分

package com.example.jpalearner.controller;

import java.util.HashMap;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import com.example.jpalearner.jpa.JpaService;
import com.example.jpalearner.jpa.Studentinformation;
import com.example.jpalearner.service.StudentInfoService;
@RestController
public class RouterController {
    
    @Autowired
    StudentInfoService service;
    
    @PostMapping(value = "/searchByservice")
    public Studentinformation  searchByservice(@RequestBody Studentinformation studentinformation)
    {
        try {
            return service.fetchByName(studentinformation);
        } catch (Exception e) {
            System.err.println(e);
        }
        return null;

    }
    
}

服务接口

package com.example.jpalearner.service;

import com.example.jpalearner.jpa.Studentinformation;

public interface StudentInfoService {
    public Studentinformation fetchByName(Studentinformation obj);
}

以及实施

package com.example.jpalearner.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.example.jpalearner.jpa.JpaService;
import com.example.jpalearner.jpa.Studentinformation;
import com.example.jpalearner.service.StudentInfoService;
@Service
public class StudentInfoServiceImpl implements StudentInfoService {
    @Autowired
    private JpaService repos;
    @Override
    public Studentinformation fetchByName(Studentinformation obj) {
        // TODO Auto-generated method stub
        return repos.findByStudentname(obj.getStudentname());
    }

}

如果我错过了@服务注释，那么将发生以下错误

糜鸿风

2023-03-14

可能是无法正确扫描包，或者CustomerService中缺少@service标记。java，检查以下代码是否有用，下面是Servletializer

package com.example.jpalearner;

import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;

@ComponentScan(basePackages = { "com.example.jpalearner" })
@SpringBootApplication
public class ServletInitializer extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(ServletInitializer.class);
    }

}

其次是RouterController

package com.example.jpalearner.controller;

import java.util.HashMap;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import com.example.jpalearner.jpa.JpaService;
import com.example.jpalearner.jpa.Studentinformation;
@RestController
public class RouterController {
    @Autowired
    private JpaService repos;
    
    
    @GetMapping
    public String defaultpath()
    {
        return "Hello World";
    }
    
    @PutMapping(value = "/save")
    public Map<String, Object> SaveRecord(@RequestBody Studentinformation studentinformation) {
        Map<String, Object> res = new HashMap<String, Object>();

        try {
            repos.save(studentinformation);
            res.put("saved", true);
        } catch (Exception e) {
            res.put("Error", e);
        }
        return res;

    }
    
    @PostMapping(value = "/search")
    public Studentinformation  GetRecord(@RequestBody Studentinformation studentinformation)
    {
        try {
            return repos.findByStudentname(studentinformation.getStudentname());
        } catch (Exception e) {
            System.err.println(e);
        }
        return null;

    }
}

实现JPA的接口

package com.example.jpalearner;

import org.springframework.data.repository.CrudRepository;

public interface JpaService extends CrudRepository<Studentinformation, Long> {

    public Studentinformation findByStudentname(String email);
}

使用实体类的

package com.example.jpalearner.jpa;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class Studentinformation {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long regid;
    
    public Long getRegid() {
        return regid;
    }

    public void setRegid(Long regid) {
        this.regid = regid;
    }
    
    private String studentname;

    public String getStudentname() {
        return studentname;
    }

    public void setStudentname(String studentname) {
        this.studentname = studentname;
    }


}

应用程序属性如下

## default connection pool
spring.datasource.hikari.connectionTimeout=20000
spring.datasource.hikari.maximumPoolSize=5

## PostgreSQL
spring.datasource.url=jdbc:postgresql://localhost:5432/testjpa
spring.datasource.username=postgres
spring.datasource.password=xyz@123

以下是pom

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.1</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example.jpalearner</groupId>
    <artifactId>simplejpalearner</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <name>simplejpasample</name>
    <description>Demo project for Spring Boot, and jpa test</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web-services</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

我没有使用@Service或@Repository标签（因为repo是在控制器中自动装配的），而我刚刚添加了基本包名称，希望它有助于@throwaway帐户2020，而如果您使用接口在Repository上工作，则需要@Service标签

@ComponentScan(basePackages = { "com.example.jpalearner" })

sql

CREATE TABLE studentinformation
(
  regid serial NOT NULL,
  studentname character varying(250) NOT NULL
);

文件树

类似资料：

[SpringBoot异常]：考虑定义存储库类型的bean

主存储库文件 ==================================自定义存储库 ============================================ 定制回购方法的实现 ===================================================== 服务等级在myRepository上遇到异常请考虑定义一个myRepository类
考虑定义“com”类型的bean。问题管理。存储库。配置中的IssueHistoryRepository

我得到这个错误。在这种情况下可以做什么？申请无法启动说明：com.issuemanagement.service.impl.中构造函数的参数0 Issue历史服务Impl需要一个无法找到的类型为“com.issuemanagement.repository.Issue历史存储库”的bean。操作：考虑定义“com”类型的bean。问题管理。存储库。配置中的IssueHistoryReposi
考虑在配置中定义“package”类型的bean

我试图在Spring Boot中创建一个简单的REST服务。在我使用CrudRepository之前，一切都很好。现在我得到了这个错误- ***应用程序启动失败描述：公司中的现场er。Spring靴。io。受雇者EmployeeService需要“company”类型的bean。Spring靴。io。受雇者找不到EmployeeRepo“”。措施：考虑定义一个“company”类型的bea
考虑在配置中定义“Mapper”类型的bean

我正在做SpringBoot项目，并遵循一些测试SpringBoot的说明。当我尝试将mysql DB与项目连接时，服务找不到映射器。我不知道为什么它找不到映射器... 这是服务代码和这是映射程序代码下面的错误是我将发布我的包裹设置的图片。。。
考虑在配置中定义“java.lang.String”类型的bean
考虑在配置中定义类型为'com.service.adminService'的bean

应用程序启动失败考虑在您的配置中定义一个类型为'com.service.adminService'的bean。

Spring Boot/MVC：考虑定义“pack”类型的bean。网站存储库。配置中的CustomerRepository

共有2个答案

相关问答

相关文章

相关阅读

相关工具

相关文档