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XPath - getting value from complex XML file

I am trying to get the value of "value" attribute of second bean's property with name "jdbcUrl". I tried multiple xpath combinations, but the only one that works for me is (//#value)[4] which is not optimal at all because if someone changes order of properties, I will get the wrong value. Is there more safer way to do it using xPath?
<?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:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- Add support for component scanning -->
<context:component-scan base-package="xxx" />
<!-- Add support for conversion, formatting and validation support -->
<mvc:annotation-driven/>
<!-- Define Spring MVC view resolver -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- Step 1: Define Database DataSource / connection pool -->
<bean id="myDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="org.postgresql.Driver" />
<property name="jdbcUrl" value="afsafa" />
<property name="user" value="postgres" />
<property name="password" value="admin" />
<!-- these are connection pool properties for C3P0 -->
<property name="initialPoolSize" value="5"/>
<property name="minPoolSize" value="5" />
<property name="maxPoolSize" value="20" />
<property name="maxIdleTime" value="30000" />
</bean>
<!-- Step 2: Setup Hibernate session factory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="packagesToScan" value="ngsi" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<!-- Step 3: Setup Hibernate transaction manager -->
<bean id="myTransactionManager"
class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<!-- Step 4: Enable configuration of transactional behavior based on annotations -->
<tx:annotation-driven transaction-manager="myTransactionManager" />
<!-- Add support for reading web resources: css, images, js, etc ... -->
<mvc:resources location="resources" mapping="/resources/**"/>
</beans>

get the value of "value" attribute of second bean's property with name "jdbcUrl"
That translates directly to
/*/*:bean[2]/*:property[#name="jdbcUrl"]/#value
That's XPath 2.0 syntax; if you're still using XPath 1.0 for some reason, then you can't use *:local; instead, either bind a prefix to the namespace http://www.springframework.org/schema/beans, or use *[local-name()="local"]

How to configure embedded Jetty to pick up web fragments?

My Java app uses embedded Jetty 9.2.2. I added a library to pom.xml containg web_fragment.xml file. But the fragment is not picked up by Jetty. When I start the application I can see in logs that the library is loaded. However when a request is made to a servlet from the library, the app returns 404.
How to make it to work?
In the app there is a Spring configuration file dispatcher-servlet.xml and the library is included there:
<import resource="classpath:/web.fragment.lib.spring.xml" />
There is no web.xml file, but the app contains spring.xml file with mappings. It uses the dispatcher-servlet.xml file:
<?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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd"
default-lazy-init="false">
<context:annotation-config/>
<context:property-placeholder system-properties-mode="FALLBACK" location="classpath:config.properties"/>
<bean name="WebServer" class="org.eclipse.jetty.server.Server" init-method="start">
<property name="connectors">
<list>
<bean name="LocalSocket" class="org.eclipse.jetty.server.ServerConnector">
<constructor-arg ref="WebServer"/>
<property name="host" value="0.0.0.0"/>
<property name="port" value="${jetty.port}"/>
</bean>
</list>
</property>
<property name="handler">
<bean class="org.eclipse.jetty.server.handler.HandlerCollection">
<property name="handlers">
<list>
<bean class="org.eclipse.jetty.servlet.ServletContextHandler">
<property name="sessionHandler">
<bean class="org.eclipse.jetty.server.session.SessionHandler"/>
</property>
<property name="contextPath" value="${context.path}"/>
<property name="servletHandler">
<bean class="org.eclipse.jetty.servlet.ServletHandler">
<property name="servlets">
<list>
<bean class="org.eclipse.jetty.servlet.ServletHolder">
<property name="name" value="dispatcherServlet"/>
<property name="servlet">
<bean class="org.springframework.web.servlet.DispatcherServlet"/>
</property>
<property name="initParameters">
<map>
<entry key="contextConfigLocation" value="**classpath:dispatcher-servlet.xml**"/>
</map>
</property>
</bean>
</list>
</property>
<property name="servletMappings">
<list>
<bean class="org.eclipse.jetty.servlet.ServletMapping">
<property name="pathSpecs">
<list>
<value>/</value>
</list>
</property>
<property name="servletName" value="dispatcherServlet"/>
</bean>
</list>
</property>
</bean>
</property>
</bean>
</list>
</property>
</bean>
</property>
</bean>
</beans>

Web Fragment auto configuration is a feature of the WebAppContext's Configuration layers.
In your example, you are using neither.
You are using Jetty, in an embedded sense, and are building up the list of servlets manually.
You'll either have to switch to building up your application via a WebAppContext or manually have to add the features that those web fragments provide.
The important thing to understand, is that web fragments are fragments of the webapp descriptor, which is a complicated feature of a webapp, which is something that is tracked by the WebAppContext, which is something that is configured by the list of Configuration layers defined in that specific WebAppContext.

How do I set Spring Batch jobParameters in xml?

This job.xml works great when using parameters.
<beans>
<bean id="testFileItemWriter" class="org.springframework.batch.item.file.FlatFileItemWriter" scope="step">
<property name="resource" value="#{jobParameters['paramFileOuput']}"/>
<property name="shouldDeleteIfExists" value="true" />
<property name="lineAggregator">
...
</property>
</bean>
</beans>
But what if I don't want to use job parameters but instead use Spring profiles...
<beans>
<bean id="testFileItemWriter" class="org.springframework.batch.item.file.FlatFileItemWriter" scope="step">
<property name="resource" ref="testFileOutput"/>
<property name="shouldDeleteIfExists" value="true" />
<property name="lineAggregator">
....
</property>
</bean>
<beans profile="dev">
<bean id="testFileOutput" class="java.lang.String">
<constructor-arg type="java.lang.String" value="file:c:/temp/testfile.txt" />
</bean>
</beans>
<beans profile="prod">
<bean id="testFileOutput" class="java.lang.String">
<constructor-arg type="java.lang.String" value="file:pathtoprod.txt" />
</bean>
</beans>
</beans>
This appears to work. But this just doesn't feel right. Is there a way to set the parameter in the xml using profiles?
Something along these lines (this obviously doesn't work)
<beans profile="dev">
<setJobParameter key="testFileOuput" value="file:c:/temp/testfile.txt" />
</beans>
I can use any version of spring or springbatch.

How about this:
public FileOutput {
private String filename;
...
}
and
<beans profile="dev">
<bean id="testFileOutput" class="FileOutput " c:filename="file:pathtoprod.txt">
</beans>
Unluckily, you cant use p/c namespace with java.lang.String, thats why you need a little helper class. Anyway, the solution would shrink your context.xml a few lines and looks more similar to your desired solution.

Spring+Maven Property File not loading

I am trying to access a property file containing db configurations in a Maven + Spring project.
I get following error:
Cannot load JDBC driver class '${db_driver}'
My Property file is placed in src/resources folder.
Below is the tag to load property files:
<bean id="dbPropertyReader"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="order" value="1" />
<property name="locations">
<value>classpath:${appenv.deployment}.properties</value>
</property>
</bean>
Following tag uses properties loaded:
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="url" value="${db_url}" />
<property name="driverClassName" value="${db_driver}" />
<property name="username" value="${db_username}" />
<property name="password" value="${db_password}" />
</bean>
Below are contents of properties file:
#JDBC Properties
db_driver=com.mysql.jdbc.Driver
db_url=jdbc\:mysql\://hostname\:3306/xxx_dbxxx?useUnicode\=true
db_username=abcdefgh
db_password=ijklmnopq
db_removeabadoned=true
db_initialsize=1
db_maxactive=2
${appenv.deployment} is a VMArgument set as follows:
-Dappenv.deployment=development
I have checked, this value is getting populated properly.
I am getting following line in logs:
Found key 'appenv.deployment' in [systemProperties] with type [String] and value 'development'
Then after this I am also getting following:
Loading properties file from class path resource [development.properties]
But some how, the values are not getting loaded.
Spring-Datasource.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean id="dbPropertyReader"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="order" value="1" />
<property name="locations">
<value>classpath:${appenv.deployment}.properties</value>
</property>
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="url" value="${db_url}" />
<property name="driverClassName" value="${db_driver}" />
<property name="username" value="${db_username}" />
<property name="password" value="${db_password}" />
<property name="initialSize" value="${db_initialsize}" />
<property name="maxActive" value="${db_maxactive}" />
</bean>
<bean id="firstConfigDataFromDB" class="org.apache.commons.configuration.DatabaseConfiguration">
<constructor-arg type="javax.sql.DataSource" ref="dataSource" />
<constructor-arg index="1" value="tablename1" />
<constructor-arg index="2" value="propertyname2" />
<constructor-arg index="3" value="propertyvalue2" />
</bean>
<bean id="firstConfigDataFromDBFactory"
class="org.springmodules.commons.configuration.CommonsConfigurationFactoryBean">
<constructor-arg ref="firstConfigDataFromDB" />
</bean>
<!-- DB Properties Initialization -->
<bean id="firstConfigurationPlaceHolder"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="order" value="2" />
<property name="ignoreUnresolvablePlaceholders" value="false"/>
<property name="properties" ref="firstConfigDataFromDBFactory" />
</bean>
<bean id="secondConfigurationFromDB"
class="org.apache.commons.configuration.DatabaseConfiguration">
<constructor-arg type="javax.sql.DataSource" ref="dataSource" />
<constructor-arg index="1" value="tablename2" />
<constructor-arg index="2" value="propertyname2" />
<constructor-arg index="3" value="propertyvalue2" />
</bean>
<bean id="secondConfigurationFromDBFactory"
class="org.springmodules.commons.configuration.CommonsConfigurationFactoryBean">
<constructor-arg ref="secondConfigurationFromDB" />
</bean>
<!--
Error Map Initialization
Subtype of org.springframework.beans.factory.config.PropertyPlaceholderConfigurer
-->
<bean id="secondConfigurationPlaceHolder"
class="com.application.SecondConfigurationPlaceHolder">
<property name="order" value="3" />
<property name="ignoreUnresolvablePlaceholders" value="false"/>
<property name="properties" ref="secondConfigurationFromDBFactory" />
</bean>
</beans>
Generic.xml
<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"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"
>
<!-- Enable annotation scanning -->
<context:annotation-config/>
<!-- Initialise connection to Database -->
<import resource="Spring-Datasource.xml"/>
<!-- Initialize mail connection -->
<import resource="Spring-Mail.xml"/>
<!-- Inject database connection to DAO -->
<import resource="Spring-DAO.xml"/>
<!-- Other Beans Below -->
</beans>
applicationContext.xml
<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"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"
>
<import resource="generic.xml" />
<bean id="applicationBean" class="com.application.ApplicationBean" scope="singleton" >
<property .. />
<property .. />
</bean>
</beans>
I am loading applicationContext.xml with following statement in code:
`appContext = new ClassPathXmlApplicationContext("applicationContext.xml");`
applicationContext.xml imports generic.xml.
generic.xml imports Spring-DataSource.xml.

have you added this to your application context file
<context:property-placeholder location="Path for .properties file"/>
add this line before the beans

How do I use an optional properties file in a Spring configuration file?

I am using an XML configuration file that is loaded into my Java application using ApplicationContext.
The XML configuration file resolves its properties by reading from several property files using PropertyPlaceholderConfigurer.
I want to make each property file optional. I thought that this is done by setting ignoreUnresolsvablePlaceholders to true, however I am getting the following exception when I run the application (db-default.properties exists but db.properties does not):
Exception in thread "main" org.springframework.beans.factory.BeanInitializationException: Could not load properties; nested exception is java.io.FileNotFoundException: class path resource [db.properties] cannot be opened because it does not exist
This is what my XML configuration looks like:
<?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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="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">
<bean id="placeholder-configurer-1" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="order" value="1"/>
<property name="ignoreUnresolvablePlaceholders" value="true"/>
</bean>
<bean id="placeholder-configurer-2" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="order" value="2"/>
<property name="ignoreUnresolvablePlaceholders" value="true"/>
<property name="location" value="classpath:/db-default.properties"/>
</bean>
<bean id="placeholder-configurer-3" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="order" value="3"/>
<property name="ignoreUnresolvablePlaceholders" value="true"/>
<property name="locations">
<list>
<value>classpath:/db.properties</value>
</list>
</property>
</bean>
<bean id="MyDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
</beans>
What do I need to do to make db.properties an optional property file?

<property name="ignoreResourceNotFound" value="true"/>
spring blog article
api docs

This should work too:
<context:property-placeholder ignore-resource-not-found="true" location="classpath:your.properties" ... />