ConcretePage.comSpring Boot Change Context Path
December 04, 2023
1. In web application, the default context path is ("/"). We can change context path by configuring property
server.servlet.context-path for Spring Boot 2.x and server.contextPath for Spring 1.x in property file as well as in command line as arguments with java command.
2. We can also configure
SERVER_SERVLET_CONTEXT_PATH for Spring Boot 2.x and SERVER_CONTEXT_PATH for Spring Boot 1.x as OS environment variable as well as in eclipse environment variable to change context path or context root.
3. Spring boot also provides API to change context path programmatically.
In our example, we will change context path as /spring-boot-app and server port as 8080. While configuring context path name, we should take care to add ("/") as prefix with context path name.
Contents
1. Using Property File (.properties/.yml)
We can change context root and server port using property file and yml file. Suppose we want to create context root as /spring-boot-app and server port as 8585. We will do as follows.a. Using property file src\main\resources\application.properties
For Spring Boot 2.x, use
server.servlet.context-path
server.servlet.context-path = /spring-boot-app server.port = 8585
server.contextPath
server.contextPath = /spring-boot-app server.port = 8585
b. Using yml file src\main\resources\application.yml
Using Spring Boot 2.x
server:
servlet:
context-path: /spring-boot-app
port: 8585
server: contextPath: /spring-boot-app port: 8585
2. Using java Command
We can change spring boot web application context root using java command. Build the project and let's say we get executable JAR named my-app.jar. Suppose we want to change default context root from ("/") to /spring-boot-app with port 8585.1. For Spring Boot 2.x
Using --server.servlet.context-path
java -jar my-app.jar --server.servlet.context-path=/spring-boot-app --server.port=8585
java -jar -Dserver.servlet.context-path=/spring-boot-app -Dserver.port=8585 my-app.jar
2. For Spring Boot 1.x
Using --server.contextPath
java -jar my-app.jar --server.contextPath=/spring-boot-app --server.port=8585
java -jar -Dserver.contextPath=/spring-boot-app -Dserver.port=8585 my-app.jar
3. Change Context Path Programmatically
SpringApplication has a method as setDefaultProperties() that is used to change spring boot default properties. Suppose we want to change context path and default port then we need to create a Map and put server.servlet.context-path key with value of desired context path name using prefix ("/"). This will work in Spring Boot 2.x. For Spring Boot 1.x, use server.contextPath to change context path. To change server port we need to put server.port key with desired port value. Find the example for Spring Boot 2.x.
MyApplication.java
@SpringBootApplication
public class MyApplication {
public static void main(String[] args) {
SpringApplication application = new SpringApplication(MyApplication.class);
Map<String, Object> map = new HashMap<>();
map.put("server.servlet.context-path", "/spring-boot-app");
map.put("server.port", "8585");
application.setDefaultProperties(map);
application.run(args);
}
}
4. Using EmbeddedServletContainerCustomizer
We can change embedded servlet container default settings registering a bean that implementsEmbeddedServletContainerCustomizer interface. We need to override its customize() method. Find the example.
ContainerCustomizerBean.java
@Component
public class ContainerCustomizerBean implements EmbeddedServletContainerCustomizer {
@Override
public void customize(ConfigurableEmbeddedServletContainer container) {
container.setContextPath("/spring-boot-app");
container.setPort(8585);
}
}
5. Using OS Environment Variable
We can change spring boot context path and default server port by settingSERVER_CONTEXT_PATH (for Spring Boot 1.x) and SERVER_PORT respectively as OS (such as Windows and Linux) environment variables. In Spring Boot 2.x, use SERVER_SERVLET_CONTEXT_PATH variable to change context path. I am using Windows 7. Find the steps to configure environment variables for Spring Boot 1.x.
Step 1: Right click on Computer icon then go to Properties -> Advanced System Settings -> Environment Variables and set variables as follows.
SERVER_CONTEXT_PATH = /spring-boot-app SERVER_PORT = 8585
java -jar my-app.jar
6. Using Eclipse Run Configurations
We can change spring boot default settings in eclipse by configuring Environment variables in run configurations.Step-1: Right click on the class and go to Run As -> Run Configurations. For Spring Boot 1.x, use
SERVER_CONTEXT_PATH and for Spring Boot 2.x, use SERVER_SERVLET_CONTEXT_PATH.
Step-2: Click on the Environment tab and configure context path and server port as follows.
SERVER_CONTEXT_PATH = /spring-boot-app SERVER_PORT = 8585
. ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.5.2.RELEASE) 2017-03-21 15:17:36.931 INFO 2212 --- [ main] com.concretepage.MyApplication : Starting MyApplication on Renu-PC with PID 2212 (F:\arvind\PROJECT\mars\spring-boot\spring-boot-demo\target\classes started by Renu in F:\arvind\PROJECT\mars\spring-boot\spring-boot-demo) 2017-03-21 15:17:36.936 INFO 2212 --- [ main] com.concretepage.MyApplication : No active profile set, falling back to default profiles: default 2017-03-21 15:17:37.043 INFO 2212 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@57f23557: startup date [Tue Mar 21 15:17:37 IST 2017]; root of context hierarchy 2017-03-21 15:17:39.049 INFO 2212 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8585 (http) 2017-03-21 15:17:39.071 INFO 2212 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat 2017-03-21 15:17:39.073 INFO 2212 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.11 2017-03-21 15:17:39.303 INFO 2212 --- [ost-startStop-1] o.a.c.c.C.[.[.[/spring-boot-app] : Initializing Spring embedded WebApplicationContext
