Spring p-namespace tutorial

last modified October 18, 2023

Spring property namespace tutorial shows how to use p-namespace in property-based injection in a Spring application.

Spring is a popular Java application framework for creating enterprise applications.

Spring p-namespace

Spring p-namespace is an XML shortcut and replacement of the <property/> subelement of the <bean/> tag. To enable the p-namespace feature, we need to add the xmlns:p="http://www.springframework.org/schema/p" into the XML file. Note that this namespace does not have a separate XSD file; therefore, IDEs such as IntelliJ do not recognize it.

Spring p-namespace example

The application contains two HelloMessage beans. One is injected with the older <property/>, the other one with the newer p-namespace attribute.

│   ├───java
│   │   └───com
│   │       └───zetcode
│   │           │   Application.java
│   │           └───bean
│   │                   HelloMessage.java
│   └───resources
│           logback.xml
│           my-beans.xml

This is the project structure.

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"










In the pom.xml file, we have basic Spring dependencies spring-core and spring-context and logging logback-classic dependency.

The exec-maven-plugin is used for executing Spring application from the Maven on the command line.

<?xml version="1.0" encoding="UTF-8"?>
    <logger name="org.springframework" level="ERROR"/>
    <logger name="com.zetcode" level="INFO"/>

    <appender name="consoleAppender" class="ch.qos.logback.core.ConsoleAppender">
            <Pattern>%d{HH:mm:ss.SSS} %blue(%-5level) %magenta(%logger{36}) - %msg %n

        <level value="INFO" />
        <appender-ref ref="consoleAppender" />

The logback.xml is a configuration file for the Logback logging library.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"

    <bean name="msg1" class="com.zetcode.bean.HelloMessage">
        <property name="message" value="How are you?"/>

    <bean name="msg2" class="com.zetcode.bean.HelloMessage" p:message="Hello there"/>


The my-beans.xml file declares two beans: msg1 and msg2. The msg1 uses <property/> tag to inject its values, while msg2 uses p:message attribute.

package com.zetcode.bean;

public class HelloMessage {

    private String message;

    public String getMessage() {
        return message;

    public void setMessage(String message) {

        this.message = message;

This is the HelloMessage class that is managed by Spring container. It must contain a setter method because we use property-based injection in our application.

package com.zetcode;

import com.zetcode.bean.HelloMessage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.support.GenericXmlApplicationContext;

public class Application {

    private static final Logger logger = LoggerFactory.getLogger(Application.class);

    public static void main(String[] args) {

        var ctx = new GenericXmlApplicationContext("my-beans.xml");

        var msg1 = (HelloMessage) ctx.getBean("msg1");
        logger.info("{}", msg1.getMessage());

        var msg2 = (HelloMessage) ctx.getBean("msg2");
        logger.info("{}", msg2.getMessage());


This is the main application class. It retrieves the two HelloMessage beans and prints them to the console.

$ mvn -q exec:java
16:52:11.257 [main] INFO  com.zetcode.Application - How are you? 
16:52:11.273 [main] INFO  com.zetcode.Application - Hello there 

We run the application.

In this article we have shown how to use property-based injection with p-namespace.


My name is Jan Bodnar and I am a passionate programmer with many years of programming experience. I have been writing programming articles since 2007. So far, I have written over 1400 articles and 8 e-books. I have over eight years of experience in teaching programming.

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