Java 无法解析占位符'；jwt.secret'；字符串中的“值”${jwt.secret}；

我已使用注释配置了属性源：

@PropertySource（value={“classpath:application.properties”}）

但我仍然收到错误消息说

无法解析字符串值中的占位符“jwt.secret”

@PropertySource(value = {"classpath:application.properties"})
public class JwtAuthenticationTokenFilter extends AbstractAuthenticationProcessingFilter {

    @Value("${jwt.header}")
    private String tokenHeader;

    public JwtAuthenticationTokenFilter() {
        super("/**");
    }
}

调度程序servlet：

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:security="http://www.springframework.org/schema/security"
       xmlns:jpa="http://www.springframework.org/schema/data/jpa"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-4.1.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
        http://www.springframework.org/schema/security 
        http://www.springframework.org/schema/security/spring-security-4.1.xsd
        http://www.springframework.org/schema/data/jpa
        http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">

    <context:component-scan base-package="com.rsc."/>
    <mvc:annotation-driven />

    <mvc:resources mapping="/resources/**" location="/resources/"/>

    <bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
        <property name="basenames">
            <list>
                <value>classpath:validation</value>
            </list>
        </property>
    </bean>

<!--    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:application.yml</value>
            </list>
        </property>
    </bean>-->

    <!--    <security:authentication-manager alias="authenticationManager">
        <security:authentication-provider user-service-ref="userDetailsServiceImpl">
            <security:password-encoder ref="encoder"></security:password-encoder>
        </security:authentication-provider>
    </security:authentication-manager>-->   

    <!--<bean id="userDetailsServiceImpl" class="com.rsc.service.UserDetailsServiceImpl"></bean>-->

    <bean id="JwtAuthenticationTokenFilter" class="com.rsc.security.JwtAuthenticationTokenFilter">
        <property name="authenticationManager" ref="authenticationManager" />
        <property name="authenticationSuccessHandler" ref="jwtAuthenticationSuccessHandler" />
    </bean>

    <security:authentication-manager alias="authenticationManager">
        <security:authentication-provider ref="jwtAuthenticationProvider" />
    </security:authentication-manager>

    <bean id="encoder" class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder">
        <constructor-arg name="strength" value="11"/>
    </bean>

    <!-- Configure the data source bean -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driverClassName}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!-- Configure the entity manager factory bean -->
    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="packagesToScan" value="com.rsc.model"/>
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
        </property>
        <property name="jpaProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hbm2ddl.auto">create</prop>
                <prop key="hibernate.id.new_generator_mappings">false</prop>
            </props>
        </property>
    </bean>

    <!-- Configure the transaction manager bean -->
    <bean id="transactionManager"
          class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory"/>
    </bean>

    <!-- Enable annotation driven transaction management -->
    <tx:annotation-driven/>

    <jpa:repositories base-package="com.rsc.repository"/>

    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

---

如果你想使用yaml，你的文件应该叫做application.yml，你可以使用这种格式

jwt:
  header: Authorization
  secret: my-very-secret-key

如果要使用属性样式格式，则应将文件命名为application.properties，并使用以下格式：

jwt.header=Authorization
jwt.secret=my-very-secret-key

---

如文档所述，您可以使用，但必须调用文件

application.yml

，而不是

application.properties

---

您还必须添加依赖项。

我发现了一个新的细节：如果您使用多模块，那么这个属性将写入main

yaml/properties

。不要使用模块的

yaml/properties

。它不能被扫描。

它应该在下面

@PropertySource(value = {"classpath:application.yml"})
public class JwtAuthenticationTokenFilter extends AbstractAuthenticationProcessingFilter {

    @Value("${jwt.header}")
    private String tokenHeader;

    public JwtAuthenticationTokenFilter() {
        super("/**");
    }
}

固定涂鸦

@PropertySource(value = {"classpath:application.yml"})

---

您可以在spring boot中将YAML用于配置文件，所以您是不对的。@KrzysztofAtłasik是的，或者当然，我已经澄清了我的答案。

@PropertySource(value = {"classpath:application.yml"})