创建名为“Web SecurityConfig”的bean时出错：通过字段“User Sevice”表示的依赖项不满足；

Question

package shop.config;

import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import shop.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.password.NoOpPasswordEncoder;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true, proxyTargetClass = true)
@EnableJpaRepositories(basePackages="java", entityManagerFactoryRef="emf")
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {


    @Autowired
    private UserService userSevice;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                .authorizeRequests()
                .antMatchers("/",
                        "/registration",
                        "/registrationClientInfo").permitAll()
                .anyRequest().authenticated()
                    .and()
                .formLogin()
                .loginPage("/login")
                .permitAll()
                    .and()
                .logout()
                .permitAll();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userSevice)
                .passwordEncoder(NoOpPasswordEncoder.getInstance());
    }
}

package shop;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;


@SpringBootApplication
public class Application {

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

}

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>MarchenkoKohovich</groupId>
    <artifactId>Shop</artifactId>
    <version>1.0-SNAPSHOT</version>


    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.5.RELEASE</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.13</version>
        </dependency>

        <!--security-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.3.RELEASE</version>
        </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>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.1.4.Final</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.2.3.Final</version>
        </dependency>
        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>2.3.0</version>
        </dependency>

    </dependencies>

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


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


        </plugins>
    </build>
</project>

我的AppClication.Properties

spring.datasource.url=jdbc:mysql://localhost:3306/electronic?useSSL=false&serverTimezone=UTC&useLegacyDatetimeCode=false
spring.datasource.username=root
spring.datasource.password=88fo
spring.jpa.generate-ddl=true

spring.freemarker.expose-request-attributes=true
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQLDialect
spring.jpa.hibernate.ddl-auto = create
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

同时：由：org.springframework.beans.factory.unsatisfieddependencyexception：创建名为“user service”的bean时出错：通过字段“user repo”表示的不满足的依赖关系；嵌套异常为org.springframework.beans.factory.noSuchBeanDefinitionException：没有“Shop.Repos.UserRepo”类型的合格bean可用：应至少有一个合格的自带候选bean。依赖项注释：{@org.SpringFramework.Beans.Factory.Annotation.AutoWired(required=true)}

UserService.java

package shop.service;

import shop.entity.User;
import shop.repos.UserRepo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;


@Service
public class UserService implements UserDetailsService {

    @Autowired
    private UserRepo userRepo;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        return userRepo.findByUsername(username);
    }

    @Transactional
    public Iterable<User> loadAllUsers(){
        return userRepo.findAll();
    }

    @Transactional
    public User saveUsers(User user){
        return userRepo.save(user);
    }

    @Transactional
    public void deleteUser(User user){
        userRepo.delete(user);
    }

    @Transactional
    public List<User> loadUserByActive(boolean active){
        return  userRepo.findByActive(active);
    }

}

userrepo.java

package shop.repos;

import shop.entity.User;
import org.springframework.data.repository.CrudRepository;

import java.util.List;

public interface UserRepo extends CrudRepository<User, Long> {
    User findByUsername(String username);
    List<User> findByActive(boolean active);
}

Answer 1

注释有问题：

@EnableJpaRepositories(basePackages="java", entityManagerFactoryRef="emf")

您尝试扫描名为“java”的包中的注释实体，但从配置文件中可以看出，实际的包是从“shop”开始的。

您应该将注释更改为：

@EnableJpaRepositories(basePackages="shop.repos", entityManagerFactoryRef="emf")