在我的Spring项目的一个服务中,我有这个:
@Value("${myProject.myVar}")
private int myVar;
这是为了引用名为application.properties
的文件中的值,该文件位于我的ProjectRoot/src/main/java
文件夹中。该文件看起来像这样:
myProject.myVar = 6
我还有一个配置文件ProjectRoot/WebContent/WEB-INF/spring/servlet-context.xml
,其中包含以下行:
<context:property-placeholder location="classpath:application.properties" />
当我运行项目时,我看到以下内容似乎表明文件正在正确加载:
INFO : org.springframework.context.support.PropertySourcesPlaceholderConfigurer -
Loading properties file from class path resource [application.properties]
然而,我的程序然后崩溃了这个嵌套异常:
Could not autowire field: private int
org.myproject.service.MyServiceImpl.myVar; nested
exception is java.lang.IllegalArgumentException: Could not resolve placeholder
'myProject.myVar' in string value "${myProject.myVar}"
是什么给出了?
修改:web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID"
version="3.0">
<display-name>Test</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/root-context.xml
/WEB-INF/spring/spring-security.xml
/WEB-INF/spring/servlet-context.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/servlet-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<filter>
<filter-name>CORS</filter-name>
<filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CORS</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>
org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<error-page>
<error-code>404</error-code>
<location>/WEB-INF/views/errors/error.jsp</location>
</error-page>
</web-app>
答案 0 :(得分:0)
您的application.properties文件位置错误。它应该在 src / main / resources 下,以便加载应用程序上下文。如果您正在运行测试用例,那么它应该在src / test / resources下。
注意,您正在启动Spring启动应用程序
.row
答案 1 :(得分:0)
两个建议
将您的属性文件放在WEB-INF/classes
下,Maven或Gradle等构建工具会自动将src/main/resources
下的所有文件放入WEB-INF/classes
。
删除=
之前和之后的空格。 myProject.myVar = 6
成为myProject.myVar=6