在Spring mvc 4问题中读取属性文件

时间:2015-05-12 15:06:36

标签: spring spring-mvc

我正在尝试在Spring mvc 4.1.6版本中读取属性文件,但我遇到了一些问题。

分配器一servlet.xml中

hex

我的班级

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

打印值时,我将server_ip设为null。我的login.properties位于src / main / resources文件夹中。

我也尝试了@Value(&#34; $ {login.server_ip}&#34;),但在部署应用程序时遇到了不同的错误。我得到了

@Component
public class UserCheck {

    @Value("${server_ip}")  String server_ip;
    public String isUserPresent(String userName){
        System.out.println("server_ip: " + server_ip);

        return "";

    }
}

还有什么我需要做的吗?

感谢。

修改

我的属性文件如下所示:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name : Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field

我的完整调度程序servlet:

server_ip=192.168.1.1

编辑2:

我的web.xml

<?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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc   
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context-3.0.xsd">

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

    <mvc:resources mapping="/**" location="/" />
    <context:property-placeholder location="classpath:login.properties"/> 

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name = "prefix" value="/WEB-INF/jsp/" />
        <property name = "suffix" value=".jsp" />
    </bean>
    <bean class="org.springframework.context.support.ResourceBundleMessageSource"
        id="messageSource">
        <property name="basename" value="messages" />
    </bean>
This was added for testing**********************
<bean class="org.springframework.context.support.PropertySourcesPlaceholderConfigurer">
        <property name="ignoreUnresolvablePlaceholders" value="true"/>
        <property name="locations">
          <list>
            <value>classpath:application.properties</value>
          </list>
        </property>
    </bean>
</beans>

编辑3:我的控制器类使用@PostConstruct方法

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>test</display-name>
  <servlet>
        <servlet-name>spring-dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>spring-dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

1 个答案:

答案 0 :(得分:0)

首先,您需要在课程上使用@Configuration注释。不确定它只适用于@Component

其次,我不知道您的项目类型和设置,但如果您的.properties文件最终在WEB-INF / classes目录中,那么Spring应该可以选择它。

编辑: 您需要将其添加到配置文件<context:annotation-config/>