Java 自动连线依赖项的注入失败；嵌套异常是org.springframework.beans.factory.BeanCreationException如何解决它

有人能给我提供一些链接吗？我可以从中学习如何使用SpringBoot Rest API、WebSecurity和MySQL创建简单的登录应用程序。 这些是我的日志。似乎它没有将bean注入到安全配置中

2016-02-07 20:04:22.138  WARN 3246 --- [           main] o.s.boot.SpringApplication               : Error handling failed (Error creating bean with name 'delegatingApplicationListener' defined in class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfiguration.class]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'metaDataSourceAdvisor': Cannot resolve reference to bean 'methodSecurityMetadataSource' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.config.annotation.method.configuration.GlobalMethodSecurityConfiguration': Initialization of bean failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'org.springframework.context.annotation.ConfigurationClassPostProcessor.importRegistry' is defined)
java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:53)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.dataSource; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'openSecretApplication': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String com.opensecret.OpenSecretApplication.databaseDriverClassName; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.driverClassName' in string value "${spring.datasource.driverClassName}"
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:368)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1054)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:829)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:764)
    at org.springframework.boot.SpringApplication.doRun(SpringApplication.java:357)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:305)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1124)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1113)
    at com.opensecret.OpenSecretApplication.main(OpenSecretApplication.java:21)
    ... 6 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.dataSource; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'openSecretApplication': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String com.opensecret.OpenSecretApplication.databaseDriverClassName; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.driverClassName' in string value "${spring.datasource.driverClassName}"
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
    ... 32 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'openSecretApplication': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String com.opensecret.OpenSecretApplication.databaseDriverClassName; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.driverClassName' in string value "${spring.datasource.driverClassName}"
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:368)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1192)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)
    ... 34 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String com.opensecret.OpenSecretApplication.databaseDriverClassName; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.driverClassName' in string value "${spring.datasource.driverClassName}"
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
    ... 54 more
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.driverClassName' in string value "${spring.datasource.driverClassName}"
    at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:174)
    at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126)
    at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:204)
    at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:178)
    at org.springframework.context.support.PropertySourcesPlaceholderConfigurer$2.resolveStringValue(PropertySourcesPlaceholderConfigurer.java:172)
    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:808)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1027)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)
    ... 56 more

这是我的主要课程：

package com.opensecret;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
import org.springframework.web.servlet.i18n.SessionLocaleResolver;

import javax.sql.DataSource;
import java.util.Locale;

@SpringBootApplication
public class OpenSecretApplication extends WebMvcConfigurerAdapter{

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

    @Value("${spring.datasource.driverClassName}")
    private String databaseDriverClassName;

    @Value("${spring.datasource.url}")
    private String datasourceUrl;

    @Value("${spring.datasource.username}")
    private String databaseUsername;

    @Value("${spring.datasource.password}")
    private String databasePassword;

    @Bean
    public DataSource datasource() {
        org.apache.tomcat.jdbc.pool.DataSource ds = new org.apache.tomcat.jdbc.pool.DataSource();
        ds.setDriverClassName(databaseDriverClassName);
        ds.setUrl(datasourceUrl);
        ds.setUsername(databaseUsername);
        ds.setPassword(databasePassword);

        return ds;
    }

    @Bean
    public LocaleResolver localeResolver() {
        SessionLocaleResolver slr = new SessionLocaleResolver();
        slr.setDefaultLocale(Locale.US);
        return slr;
    }

    @Bean
    public LocaleChangeInterceptor localeChangeInterceptor() {
        LocaleChangeInterceptor lci = new LocaleChangeInterceptor();
        lci.setParamName("lang");
        return lci;
    }

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/login").setViewName("login");
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(localeChangeInterceptor());
    }
}

这是我的安全配置：

package com.opensecret.config;

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.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
import org.springframework.security.provisioning.JdbcUserDetailsManager;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.stereotype.Component;

import javax.sql.DataSource;
import java.util.ArrayList;
import java.util.List;

@Component
@Configuration
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private DataSource datasource;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception{
//        auth.inMemoryAuthentication()
//                .withUser("admin").password("password").roles("USER","ADMIN")
//                .and()
//                .withUser("jaiprak").password("password").roles("USER","ADMIN");
        JdbcUserDetailsManager userDetailsService = new JdbcUserDetailsManager();
        userDetailsService.setDataSource(datasource);
        PasswordEncoder encoder = new BCryptPasswordEncoder();

        auth.userDetailsService(userDetailsService).passwordEncoder(encoder);
        auth.jdbcAuthentication().dataSource(datasource);

        if(!userDetailsService.userExists("user")) {
            List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
            authorities.add(new SimpleGrantedAuthority("USER"));
            User userDetails = new User("user", encoder.encode("password"), authorities);

            userDetailsService.createUser(userDetails);
        }
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                .csrf().disable()
                .authorizeRequests().anyRequest().fullyAuthenticated()
                .and()
                .httpBasic().and()
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
        http
                .formLogin().failureUrl("/login?error")
                .defaultSuccessUrl("/")
                .loginPage("/login")
                .permitAll()
                .and()
                .logout().logoutRequestMatcher(new AntPathRequestMatcher("/logout")).logoutSuccessUrl("/login")
                .permitAll();
    }
}

---

我不知道这里发生了什么。有谁能告诉我为什么会发生这种情况以及如何解决它。

不用等待application.properties或application.yml，正如我在评论中提到的，我几乎100%确定您在上面提到的其中一个文件中缺少“spring.datasource.driverClassName”的值

有关Spring Boot中外部配置的更多信息，请访问：

无论如何，这部分代码：

@Value("${spring.datasource.driverClassName}")
private String databaseDriverClassName;

@Value("${spring.datasource.url}")
private String datasourceUrl;

@Value("${spring.datasource.username}")
private String databaseUsername;

@Value("${spring.datasource.password}")
private String databasePassword;

@Bean
public DataSource datasource() {
    org.apache.tomcat.jdbc.pool.DataSource ds = new org.apache.tomcat.jdbc.pool.DataSource();
    ds.setDriverClassName(databaseDriverClassName);
    ds.setUrl(datasourceUrl);
    ds.setUsername(databaseUsername);
    ds.setPassword(databasePassword);

    return ds;
}

可以是全方位的。当您为数据库驱动程序（本例中为mysql）提供依赖关系时，数据库连接详细信息由spring boot autoconfiguration配置。这里需要的唯一配置是在application.properties/application.yml中定义的url、用户名密码等数据库细节

示例如下：

---

希望这有帮助：）

不用等待application.properties或application.yml，正如我在评论中提到的，我几乎100%确定您在上面提到的其中一个文件中丢失了'spring.datasource.driverClassName'的值

有关Spring Boot中外部配置的更多信息，请访问：

无论如何，这部分代码：

@Value("${spring.datasource.driverClassName}")
private String databaseDriverClassName;

@Value("${spring.datasource.url}")
private String datasourceUrl;

@Value("${spring.datasource.username}")
private String databaseUsername;

@Value("${spring.datasource.password}")
private String databasePassword;

@Bean
public DataSource datasource() {
    org.apache.tomcat.jdbc.pool.DataSource ds = new org.apache.tomcat.jdbc.pool.DataSource();
    ds.setDriverClassName(databaseDriverClassName);
    ds.setUrl(datasourceUrl);
    ds.setUsername(databaseUsername);
    ds.setPassword(databasePassword);

    return ds;
}

可以是全方位的。当您为数据库驱动程序（本例中为mysql）提供依赖关系时，数据库连接详细信息由spring boot autoconfiguration配置。这里需要的唯一配置是在application.properties/application.yml中定义的url、用户名密码等数据库细节

示例如下：

---

希望对您有所帮助：）

您如何为spring.datasource.drivercassname提供价值？请粘贴您的application.properties或application.yml。如何为spring.datasource.drivercassname提供值？请粘贴您的application.properties或application.yml。