Spring Could not Resolve placeholder

Question

I m fairly new to spring so excuse me if this is a dumb question  When I try to launch a program I get the following error  java lang IllegalArgumentException  Could not resolve placeholder  appclient  in string value    appclient    The error is thrown when the following code is executed   package ca virology lib2 common config spring properties  import ca virology lib2 config spring PropertiesConfig  import org slf4j Logger  import org slf4j LoggerFactory  import org springframework beans factory annotation Value  import org springframework context annotation Configuration  import org springframework context annotation Import  import org springframework context annotation PropertySource    Configuration  Import  PropertiesConfig class    PropertySource    appclient    public class AppClientProperties   private static final Logger log   LoggerFactory getLogger AppClientProperties class           this initializer block will execute when an instance of this class is created by Spring     log info  Loading AppClientProperties       Value    appclient port     private int appClientPort    Value    appclient host     private String appClientHost   public int getAppClientPort         return appClientPort     public String getAppClientHost         return appClientHost        A property file called appclient properties exists in the resources folder with the information for host and port  I m not sure where the    appclient   is defined  if it is at all  Maybe it is not even defined and that is causing the problem  Do I need to change the    appclient   to something like   classpath  appclient properties   or am I missing something else

User · Answer

For properties that need to be managed outside of the WAR:

<context:property-placeholder location="file:///C:/application.yml"/>

For example if inside application.yml are name and id

Then you can create bean in runtime inside xml spring

<bean id="id1" class="my.class.Item">
    <property name="name" value="${name}"/>
    <property name="id" value="${id}"/>
</bean>

User · Answer

in my case  the war file generated didn t pick up the properties file so had to clean install again in IntelliJ editor

User · Answer

If you are using Spring 3 1 and above  you can use something like      Configuration  PropertySource  classpath foo properties   public class PropertiesWithJavaConfig     Bean public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer       return new PropertySourcesPlaceholderConfigurer          You can also go by the xml configuration like      lt  xml version  1 0  encoding  UTF-8   gt   lt beans xmlns  http   www springframework org schema beans  xmlns xsi  http   www w3 org 2001 XMLSchema-instance  xmlns context  http   www springframework org schema context  xsi schemaLocation     http   www springframework org schema beans    http   www springframework org schema beans spring-beans-3 2 xsd   http   www springframework org schema context    http   www springframework org schema context spring-context-3 2 xsd  gt      lt context property-placeholder location  classpath foo properties    gt      lt  beans gt    In earlier versions

User · Answer

If your config file is in a different path than classpath  you can add the configuration file path as a system property   java -Dapp config path path to config file -jar your jar

User · Answer

My solution was to add a space between the   and the     For example    Value    appclient port       becomes   Value     appclient port

User · Answer

I know It is an old message   but i want to add my case   If you use more than one profile dev test prod      check your execute profile

User · Answer

Hopefully it will be still helpful  the application properties  or application yml  file must be in both the paths    src main resource config src test resource config   containing the same property you are referring

User · Answer

You are not reading the properties file correctly  The propertySource should pass the parameter as  file appclient properties or classpath appclient properties  Change the annotation to    PropertySource value   classpath appclient properties      However I don t know what your PropertiesConfig file contains  as you re importing that also  Ideally the  PropertySource annotation should have been kept there

[java] Spring Could not Resolve placeholder

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