登录
当前位置： 首页 > 知识库问答 >
问题：

UnsatisfiedDependencyException与springboot

赫连子石
2023-03-14

我在springboot遇到困难。我正在学习一个课程类，我的代码和我的教授完全一样，但我的代码给了我这个错误（我已经尝试了很多解决方案来解决这个问题，比如在另一个.xml中创建一个bean，在main类中使用@EntityScan和@ComponentScan，但没有任何东西对我有用）：

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.2.4.RELEASE)

2020-02-22 21:15:17.728  INFO 8108 --- [           main] br.com.luis.restwithspringboot.Main      : Starting Main on DESKTOP-HVESQU8 with PID 8108 (started by lucar in C:\Users\lucar\IdeaProjects\RestWithSpringBootUdemy\02 RestWithSpringBootInitialzr)
2020-02-22 21:15:17.731  INFO 8108 --- [           main] br.com.luis.restwithspringboot.Main      : No active profile set, falling back to default profiles: default
2020-02-22 21:15:18.842  INFO 8108 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2020-02-22 21:15:18.850  INFO 8108 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-02-22 21:15:18.851  INFO 8108 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.30]
2020-02-22 21:15:18.951  INFO 8108 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2020-02-22 21:15:18.952  INFO 8108 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1178 ms
2020-02-22 21:15:18.992  WARN 8108 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'personController': Unsatisfied dependency expressed through field 'service'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'personService': Unsatisfied dependency expressed through field 'repository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'br.com.luis.restwithspringboot.repository.PersonRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
2020-02-22 21:15:18.994  INFO 8108 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2020-02-22 21:15:19.083  INFO 8108 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-02-22 21:15:19.174 ERROR 8108 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Field repository in br.com.luis.restwithspringboot.services.PersonService required a bean of type 'br.com.luis.restwithspringboot.repository.PersonRepository' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)


Action:

Consider defining a bean of type 'br.com.luis.restwithspringboot.repository.PersonRepository' in your configuration.


Process finished with exit code 1

我的主要类：

package br.com.luis.restwithspringboot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@ComponentScan({ "br.com.luis.restwithspringboot.*" })
public class Main {

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

}

我的PersonRepository类：

package br.com.luis.restwithspringboot.repository;

import br.com.luis.restwithspringboot.model.Person;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface PersonRepository extends JpaRepository<Person, Long> {

}

我的PersonService类：

package br.com.luis.restwithspringboot.services;

import br.com.luis.restwithspringboot.exceptions.ResourceNotFoundException;
import br.com.luis.restwithspringboot.model.Person;
import br.com.luis.restwithspringboot.repository.PersonRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class PersonService {

    @Autowired
    PersonRepository repository;

    public Person create(Person person) {
        return repository.save(person);
    }

    public List<Person> findAll() {
        return repository.findAll();
    }

    public Person findById(Long id) {

        return repository.findById(id)
                .orElseThrow(() -> new ResourceNotFoundException("No records found for this ID"));
    }

    public Person update(Person person) {
        Person entity = repository.findById(person.getId())
                .orElseThrow(() -> new ResourceNotFoundException("No records found for this ID"));

        entity.setFirstName(person.getFirstName());
        entity.setLastName(person.getLastName());
        entity.setAddress(person.getAddress());
        entity.setGender(person.getGender());

        return repository.save(entity);
    }

    public void delete(Long id) {
        Person entity = repository.findById(id)
                .orElseThrow(() -> new ResourceNotFoundException("No records found for this ID"));
        repository.delete(entity);
    }

}

我的PersonController类：

package br.com.luis.restwithspringboot.controllers;

import br.com.luis.restwithspringboot.model.Person;
import br.com.luis.restwithspringboot.services.PersonService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/person")
public class PersonController {

    @Autowired
    private PersonService service;

    @GetMapping
    public List<Person> findAll() {
        return service.findAll();
    }

    @GetMapping("/{id}")
    public Person findById(@PathVariable("id") Long id) {
        return service.findById(id);
    }

    @PostMapping
    public Person create(@RequestBody Person person) {
        return service.create(person);
    }

    @PutMapping
    public Person update(@RequestBody Person person) {
        return service.update(person);
    }

    @DeleteMapping("/{id}")
    public ResponseEntity<?> delete(@PathVariable("id") Long id) {
        service.delete(id);
        return ResponseEntity.ok().build();
    }
}

我的pom.xml：

<?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>2.2.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>br.com.luis</groupId>
    <artifactId>restwithspringboot</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>restwithspringboot</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>11</java.version>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>com.microsoft.sqlserver</groupId>
            <artifactId>mssql-jdbc</artifactId>
        </dependency>
    </dependencies>

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

</project>

所有pom.xml都是由Intellij思想的spring Initializr生成的。我希望任何人都能帮助我。谢谢伙计们！如果你需要任何其他代码，请告诉我，我会立即发送。

编辑：

使用@enableJParepositories(basePackages=“br.luis.RestWithSpringBoot.*”）：

      .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.2.4.RELEASE)

2020-02-22 21:58:00.228  INFO 6888 --- [           main] br.com.luis.restwithspringboot.Main      : Starting Main on DESKTOP-HVESQU8 with PID 6888 (started by lucar in C:\Users\lucar\IdeaProjects\RestWithSpringBootUdemy\02 RestWithSpringBootInitialzr)
2020-02-22 21:58:00.232  INFO 6888 --- [           main] br.com.luis.restwithspringboot.Main      : No active profile set, falling back to default profiles: default
2020-02-22 21:58:00.791 ERROR 6888 --- [           main] o.s.boot.SpringApplication               : Application run failed

java.lang.NoClassDefFoundError: org/springframework/orm/jpa/support/PersistenceAnnotationBeanPostProcessor
    at org.springframework.data.jpa.repository.config.JpaRepositoryConfigExtension.<clinit>(JpaRepositoryConfigExtension.java:76) ~[spring-data-jpa-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.data.jpa.repository.config.JpaRepositoriesRegistrar.getExtension(JpaRepositoriesRegistrar.java:46) ~[spring-data-jpa-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.data.repository.config.RepositoryBeanDefinitionRegistrarSupport.registerBeanDefinitions(RepositoryBeanDefinitionRegistrarSupport.java:101) ~[spring-data-commons-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.lambda$loadBeanDefinitionsFromRegistrars$1(ConfigurationClassBeanDefinitionReader.java:385) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
    at java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[na:na]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsFromRegistrars(ConfigurationClassBeanDefinitionReader.java:384) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:148) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:120) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:331) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:236) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:706) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at br.com.luis.restwithspringboot.Main.main(Main.java:14) ~[classes/:na]
Caused by: java.lang.ClassNotFoundException: org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581) ~[na:na]
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) ~[na:na]
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
    ... 21 common frames omitted

解决了：在主类中添加了@enableJPararePositories(basePackages=“My.Package.*”），在@SpringBootApplication之上或之下添加了对pom.xml的依赖，就像Jacob和Hussain所说的，谢谢伙计们！

共有1个答案

羊舌富
2023-03-14

抛出上述异常/错误是因为Java类加载器找不到在工件“spring-orm”下可用的类“PersistenceanNotationBeanPostProcessor”。

应通过添加以下依赖项来解决问题

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

添加上述依赖项后，可能会出现“无法配置数据源”的情况，因为项目中没有定义数据库配置。您可以通过添加以下依赖项来使用嵌入式数据库。H2以下的依赖项会出现内存中的数据库。

<dependency>
   <groupId>com.h2database</groupId>
   <artifactId>h2</artifactId>
</dependency>
 类似资料：
  • Spring Boot中的UnsatisfiedDependencyException

    原因：org.springframework.beans.factory.UnsatisfiedDependencyException：创建名为“DBUtils”的bean时出错：通过字段“bn repo”表示的未满足的依赖项；嵌套异常为org.springframework.beans.factory.noSuchBeanDefinitionException：没有“.*.DataAccess.

  • 带有unsatisfiedDependencyException org.SpringFramework.Beans.Factory的问题

    Microsoft Windows[版本10.0.18362.1016](c)2019 Microsoft Corporation。保留所有权利。

  • @WebMVCTest测试类中的UnsatisfiedDependencyException

    将@service添加到控制器后，单元测试失败。该项目是Spring-boot V2.0.1版本。我花了很多时间想找到答案，但没有成功。在我添加@service注释之前，测试工作正常，并且我的服务类在其中有一个存储库。 堆栈跟踪： 2018-04-24 12:57:12.487警告940--[main]O.s.w.cs.GenericWebApplicationContext：上下文初始化过程中遇

  • UnsatisfiedDependencyException-无法为facade创建bean

    我面临着我自己无法解决的问题。我想当有Spring经验的人检查时，解决方案可能是显而易见的。 我有一个非常简单的存储库： 就我而言，对象应该在中创建，然后注入到测试类的中。由于某种原因，它根本没有发生。我将感谢任何可能导致解决这个问题的帮助或暗示。

  • 扩展类会引发UnsatisfiedDependencyException异常

    我是构建web服务的新手，我开始使用spring boot构建web服务。我创建了以下controller类 尝试运行我的web服务会导致它抛出以下异常： 但是，如果我移除“ScheduledThreadPoolExecutor”和构造函数，它运行良好。谁能解释一下扩展课程有什么问题吗？ 注： 1）扩展类是在下面提到的文章中建议的，作为我最初问题的解决方案。最初，我的runnable在没有任何类型

  • UnsatisfiedDependencyException：使用名称创建bean时出错

    问题内容： 几天来，我一直在尝试创建Spring CRUD应用程序。我糊涂了。我无法解决此错误。 还有这个 客户端控制器 ClientServiceImpl 客户资料库 我浏览了许多类似的问题，但是没有人回答不能帮助我。 问题答案： ClientRepository应该用标记注释。使用你当前的配置，Spring将不会扫描该类并对其有所了解。在启动和连接时，找不到ClientRepository类。

相关问答

扩展类会引发UnsatisfiedDependencyException异常UnsatisfiedDependencyException：创建名为“Controllery”的bean时出错UnsatisfiedDependencyException，创建名称为的bean时出错测试时自动连接@Service时出现UnsatisfiedDependencyExceptionUnsatisfiedDependencyException：创建名为“Request MappingHandlerAdapter”的bean时出错

相关文章

window.onload与body.onload与document.onready [重复]MySQL：NULL与“”Array_merge与+EJS：<％=与<％-Java EE 6 @ javax.annotation.ManagedBean与@ javax.inject.Named与@ javax.faces.ManagedBean

相关阅读

Kafka与Spark整合Kafka与Storm整合Lua 模块与包C语言指针（包括：指针与数组、指针与字符串、指针与函数）Cassandra安装与配置

相关工具

锻造与财富大象与猩猩《Redis 设计与实现》《Apache Spark 设计与实现》flash与py的聊天室

相关文档

树莓派与 LinuxRedis 设计与实现Django 入门与实践Oracle 备份与恢复你不懂JS：ES6与未来
快捷导航： 新手教程 算法原理 架构设计 Java进阶 数据库进阶 大厂专栏 面试经验 编程笔记 编程问答 所有专题 文档资料 工具软件 电子书籍 小牛导航
在线工具： 房贷计算器 个税计算器 Linux命令查询 Json格式化 正则表达式 颜色转换 AES加解密 SHA1加密 MD5加密 毒鸡汤 字数统计 随机密码生成 进制转换 Base64编解码 励志句子
Copyright © 2019-2024 小牛知识库@xnip.cn. All Rights Reserved.