java - Spring:属性文件中的值不会 Autowiring

Question

我使用的是Spring 4。我的配置是:

web.xml

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:contexts/root/spring-root-context.xml
        classpath:contexts/security/security-context.xml</param-value>
</context-param>

spring-root-context.xml

<context:property-placeholder location="classpath:credentials.properties" />

security-context.xml

<beans:bean id="myCustomFilter" class="filters.MyCustomFilter">
    <beans:property name="authenticationManager" ref="authenticationManager" />
</beans:bean>

credentials.properties

ClientSecret=qwerty

MyCustomFilter.java

public class MyCustomFilter extends AbstractAuthenticationProcessingFilter {

    @Value("${ClientSecret}")
    private String clientSecret;

}

属性文件已加载

INFO RMI TCP Connection(3)-127.0.0.1 support.PropertySourcesPlaceholderConfigurer:172 - Loading properties file from class path resource [credentials.properties]

clientSecret的值没有被注入(inject)。

Answer 1

看起来您没有<context:annotation-config>在你的spring-root-context.xml .

从另一边，如果配置 MyCustomFilter作为<bean>只需使用它的属性:

<beans:bean id="myCustomFilter" class="filters.MyCustomFilter">
    <beans:property name="authenticationManager" ref="authenticationManager" />
    <beans:property name="clientSecret" value="${ClientSecret}" />
</beans:bean>

如果您有setter当然，为此。