Question

我搜索了我的一个问题，并通过@component注释找到了这个问题。

但是在我的应用程序中我使用xml配置，因为注释很讨厌而且不可配置，你需要重新编译所有代码更改smth。

所以，我的问题是：我如何使用这个解决方案与xml-conf？如何在其中实现组件？

Answer 1

修改

根据您的评论我可以看到您想要将监听器添加到 AuthenticationEvent

public class AuthenticationEventListener 
        implements ApplicationListener<AbstractAuthenticationEvent> {

    @Override
    public void onApplicationEvent(AbstractAuthenticationEvent event) {
        // process the event
    }
}

现在你必须在这个配置了安全性的相同的spring上下文中放入这种类型的bean。假设您已在 security-context.xml 中配置了spring security。然后，您必须在此上下文中定义您的bean

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:security="http://www.springframework.org/schema/security"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/security
                           http://www.springframework.org/schema/security/spring-security-3.2.xsd">

    <security:global-method-security secured-annotations="enabled" />

    <security:http auto-config="true">
        <!-- Restrict URLs based on role -->
        <security:intercept-url pattern="/login*" access="IS_AUTHENTICATED_ANONYMOUSLY" />
        <security:intercept-url pattern="/logoutSuccess*" access="IS_AUTHENTICATED_ANONYMOUSLY" />

        <security:intercept-url pattern="/css/main.css" access="IS_AUTHENTICATED_ANONYMOUSLY" />
        <security:intercept-url pattern="/resources/**" access="IS_AUTHENTICATED_ANONYMOUSLY" />

        <security:intercept-url pattern="/**" access="ROLE_USER" />

        <!-- Override default login and logout pages -->
        <security:form-login login-page="/login.html" 
                             login-processing-url="/loginProcess" 
                             default-target-url="/index.jsp" 
                             authentication-failure-url="/login.html?login_error=1" />
        <security:logout logout-url="/logout" logout-success-url="/logoutSuccess.html" />
    </security:http>

    <security:authentication-manager>
        <security:authentication-provider >
            <security:jdbc-user-service data-source-ref="dataSource" />
        </security:authentication-provider>
    </security:authentication-manager>

   <bean id="authenticationEventListener" 
         class="AuthenticationEventListener"/>


  </beans>

P.S。

如果您不想使用@component注释，可以直接在xml中创建bean。

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

   <bean id="helloWorld" class="com.HelloWorld" 
      scope="singleton" name="componentValue">
   </bean>

</beans>

Xml或注释你的bean将在应用程序上下文中。

引入了@Component注释，以便在类路径扫描期间自动检测和配置bean。

什么是spring中@component的xml配置表示

1 个答案: