Springboot @Configuration @bean注解作用解析

这篇文章主要介绍了springboot @Configuration @bean注解作用解析,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

@Configuration注解可以达到在Spring中使用xml配置文件的作用

@Bean就等同于xml配置文件中的

在spring项目中我们集成第三方的框架如shiro会在spring.xml配置文件中进行配置，例如：

  
    
    
    
    
    
    
    
      
 /css/**=anon
 /js/**=anon
 /validatecode.jsp*=anon
 /images/**=anon
 /login.jsp=anon
 /service/**=anon
 /**=authc
      
    
  
  
  
     
     
     
  

  
  
     
    
   

  
  
    
    
  
  
  

在springboot与shiro整合：

@Configuration
public class ShiroConfig {
  @Bean
  public ShiroFilterFactoryBean shirFilter(SecurityManager securityManager) {
    ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
    shiroFilterFactoryBean.setSecurityManager(securityManager);

    Map filterChainDefinitionMap = new HashMap();
    shiroFilterFactoryBean.setLoginUrl("/login");
    shiroFilterFactoryBean.setUnauthorizedUrl("/unauthc");
    shiroFilterFactoryBean.setSuccessUrl("/home/index");
    
    filterChainDefinitionMap.put("/*", "anon");
    filterChainDefinitionMap.put("/authc/index", "authc");
    return shiroFilterFactoryBean;
  }

  @Bean
  public HashedCredentialsMatcher hashedCredentialsMatcher() {
    HashedCredentialsMatcher hashedCredentialsMatcher = new HashedCredentialsMatcher();
    hashedCredentialsMatcher.setHashAlgorithmName(PasswordHelper.ALGORITHM_NAME); 
    hashedCredentialsMatcher.setHashIterations(PasswordHelper.HASH_ITERATIONS); 
    return hashedCredentialsMatcher;
  }

  @Bean
  public EnceladusShiroRealm shiroRealm() {
    EnceladusShiroRealm shiroRealm = new EnceladusShiroRealm();
    shiroRealm.setCredentialsMatcher(hashedCredentialsMatcher()); 
    return shiroRealm;
  }

  @Bean
  public SecurityManager securityManager() {
    DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
    securityManager.setRealm(shiroRealm());
    return securityManager;
  }

  @Bean
  public PasswordHelper passwordHelper() {
    return new PasswordHelper();
  }
}

@Configuration注解可以达到在Spring中使用xml配置文件的作用。

@Bean就等同于xml配置文件中的

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