Develop Reference

Springboot application start up fails and missing logs when using azure.keyvault.secret.property-sources

I am trying to migrate my springboot application written in kotlin to azure.
I added spring-cloud-azure-starter-keyvault-secrets:4.5.0 dependency in my app, and added below configurations to application.properties.
my.secret=${my-azure-secret}
spring.cloud.azure.keyvault.secret.property-source-enabled=true
spring.cloud.azure.keyvault.secret.property-sources[0].endpoint=<my-vault>.vault.azure.net/
After I add this, the spring boot initialization doesn't work any more and i can't find any logs.
log.info { "Log before springboot initialize" }
SpringApplication(MyApplication::class.java).run(*args)
log.info { "Log after springboot initialize" }
So, Log before springboot initialize is logged, and after that nothing happens (or I can't find any logs afterwards)
I already verified it is not related to any logback settings because if I remove the property spring.cloud.azure.keyvault.secret.property-sources[0].endpoint from application.properties, it boots up properly.
(I also tried to add the additional dependency spring-cloud-azure-dependencies:4.5.0 )
Any clues/hints what is happening and how to resolve it ?
Thanks.

Here I was able to boot the spring application using the same dependencies.
But here I used the latest version of spring-cloud-azure-starter-keyvault-secrets i.e. 5.0.0 also my spring boot version is 3.0.2
my dependencies:
<dependencies>
<dependency> <groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <!-- https://mvnrepository.com/artifact/com.azure.spring/spring-cloud-azure-starter-keyvault-secrets -->
<dependency>
<groupId>com.azure.spring</groupId>
<artifactId>spring-cloud-azure-starter-keyvault-secrets</artifactId>
<version>5.0.0</version>
</dependency>
<dependency> <groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency></dependencies>
Also I use windows so instead of my_azure_secret instead of the my-azure-secret
output:

Spring cloud-config client giving error Failed to configure a DataSource: 'url' attribute is not specified

Spring cloud-config server started with application.properties :
server.port:8888
spring.application.name=test-config-server
spring.cloud.config.server.git.uri=https://gitlab.com/pearsontechnology/gpt/sms/sms-micro-services/config-server.git
spring.cloud.config.server.git.default-label=develop
#Private repo. access credentials
spring.cloud.config.server.git.username=xxx
spring.cloud.config.server.git.password=xxxx
spring.cloud.config.server.git.clone-on-start=true
spring.cloud.config.profile=dev
On starting the config-client,
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
My version of spring boot, spring-cloud and dependencies are as follows from pom.xml :
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.2</version>
<java.version>17</java.version>
<spring-cloud.version>2021.0.3</spring-cloud.version>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>com.oracle.database.jdbc</groupId>
<artifactId>ojdbc8</artifactId>
<scope>runtime</scope>
</dependency>
application.prop of config-client :
spring.application.name=systems-lookup-service
spring.cloud.config.profile=dev
spring.config.import=optional:configserver:
server.port=8081
Properties related to Datasource like url etc. need to be taken from
systems-lookup-service-dev.properties hosted on Git.
custom.url=jdbc:oracle:thin:#localhost:1998/smscert
custom.username=smscert
custom.password=go#salt
custom.driverClassName=
And the DAO class in config-client accessing the db :
public class XXDaoImpl implements XXDao {
private JdbcTemplate jdbcTemplate;
#Autowired(required=false)
private DataSourceConfig config;
#Autowired
public SystemDaoImpl(JdbcTemplate jdbcTemplateIn){
final DataSource dataSource = DataSourceBuilder.create()
.driverClassName(config.getDriverClassName())
.url(config.getUrl())
.username(config.getUsername())
.password(config.getPassword())
.build();
this.jdbcTemplate = new JdbcTemplate(dataSource);
}
...............
}
#Component
#ConfigurationProperties("custom")
public class DataSourceConfig {
private String url;
private String username;
private String password;
//#Value("${greeting.message}")
private String driverClassName;
....
}

I believe you follow the first boot-strapping for your central cloud registration to do so you need following artifact with in your client service pom file.
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
Add the following properties to you client service property file application.prop
spring.application.name=systems-lookup-service
spring.cloud.config.uri=http://localhost:"cloud-config-port"
spring.profiles.active=dev
spring.config.import=optional:configserver:
With in main class on central cloud config add the annotation #EnableConfigServer and within it pom file add following artifact
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server</artifactId>
</dependency>
append following properties to your central cloud config property file
spring.application.name=configuration-server
server.port=8780
management.endpoints.web.exposure.include=*
spring.cloud.config.server.git.uri=file:absoluthe-path
spring.cloud.config.server.git.clone-on-start=true
spring.cloud.config.allowOverride=true
Finally add your client service properties in your gitrepo with naming servicename-profile convention.
Extra point
You may consider to use spring cloud boss, for hot reloading the configs and not restarting services to handshake again, find out more in here.

Disabled auto-configuration of the data source by annotating client main with #SpringBootApplication(exclude={DataSourceAutoConfiguration.class})

'Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.' error in springboot application

I created a springboot application that uses Spring Boot and Apache Camel JDBC Component for inserting a record in postgreSQL. For this purpose I am using the following dependencies:
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-jdbc</artifactId>
<version>${camel.version}</version>
<!-- use the same version as your Camel core version -->
</dependency>
As for the database configuration, I created the following java class with an application.properties file:
Database Configuration java class:
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;
import org.apache.camel.support.SimpleRegistry;
import org.apache.commons.dbcp2.BasicDataSource;
public class DatabaseConfiguration {
public static SimpleRegistry createDatabaseConfiguration() throws IOException {
Properties properties = new Properties();
properties.load(new FileInputStream("src/main/resources/application.properties"));
BasicDataSource basic = new BasicDataSource();
basic.setDriverClassName(properties.getProperty("PostgresDBClassname"));
basic.setUsername(properties.getProperty("PostgresDBUsername"));
basic.setPassword(properties.getProperty("PostgresDBPassword"));
basic.setUrl(properties.getProperty("PostgresDBUrl"));
SimpleRegistry registry = new SimpleRegistry();
registry.bind("myDataSource", basic);
return registry;
}
}
application.properties file:
PostgresDBUsername = username
PostgresDBPassword = password
PostgresDBClassname = org.postgresql.Driver
PostgresDBUrl = jdbc:postgresql://localhost:5432/postgres
I wrote the router in the following way, noting that I tried to replace dataSource with myDataSource:
#Component
public class InsertRestService extends RouteBuilder {
#Override
public void configure() throws Exception {
rest("/").produces("text/plain")
.get("insert")
.to("direct:hello");
from("direct:hello")
.transform().simple("INSERT INTO person (name, country) VALUES (DANY, LB)")
.to("jdbc:dataSource") //spring boot starter jdbc creates the bean in the registry
.transform().simple("Data inserted in Postgres successfully");
}
}
I got the following error:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Reason: Failed to determine a suitable driver class
I provided the URL in the application.properties file PostgresDBUrl
Also note that I downloaded the jdbc driver jar file and added it to the module path, after a right click on the package, build path, configure build path
So what can I do to solve this issue?
Thank you!!

I removed the configuration file (DatabaseConfiguration) and replaced the content of the application.properties file with:
spring.datasource.url=jdbc:postgresql://localhost:5432/test
spring.datasource.username=username
spring.datasource.password=password
spring.datasource.platform=postgres
spring.jpa.hibernate.ddl-auto=none
and it worked!

Check your pom.xml file and switch its packaging into war. It worked for me.
<packaging>war</packaging>

JSP in Spring Boot application yields 404 Error no matter what I do

I'll start off by saying I've looked at and tried the solutions in every question regarding this that I can find. The biggest problem is that most of these solutions are very old, and Spring Boot has changed a lot in the last several years. To be clear, I've tried this, this, this, this, and more. I've also read numerous tutorials. Nothing works.
I have a brand new Spring Boot application and I'm trying to get JSP rendering working with it. These are my dependencies:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>[2.3.4.RELEASE,3)</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>[2.3.4.RELEASE,3)</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
<version>[2.3.4.RELEASE,3)</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>[2.8.0,3)</version>
</dependency>
<dependency>
<groupId>de.mkammerer</groupId>
<artifactId>argon2-jvm</artifactId>
<version>[2.7,3)</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>[8.0.21,9)</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>[2.3.2,)</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<version>[2.3.4.RELEASE,3)</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<version>[9.0.38,)</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>[2.3.4.RELEASE,3)</version>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
My project is laid out as follows:
- source
- production
- java
- [my source code packages]
- resources
- WEB-APP
- jsp
- initialization
- begin.jsp
- [my resource packages]
- test
- java
- resources
"WEB-APP/jsp" is just the latest iteration I've tried. I've tried "WEB-INF/jsp", "META-INF/jsp", "webapp/jsp", no parent (just "jsp"), etc., all with the same results.
I know the parent directories are a bit non-standard, but it's configured correctly in Maven and I've confirmed it's not the source of my problems:
<build>
<sourceDirectory>source/production/java</sourceDirectory>
<resources>
<resource>
<directory>source/production/resources</directory>
</resource>
</resources>
...
</build>
My Application class is as follows:
#SpringBootApplication(scanBasePackages="com.my.project")
#EnableWebMvc
#EnableJpaRepositories("com.my.project.repository")
#EntityScan("com.my.project.model")
public class Application
{
private static final Logger LOGGER = LogManager.getLogger(Application.class);
public Application()
{
}
#Bean
public ViewResolver viewResolver()
{
LOGGER.info("Constructing InternalResourceViewResolver[JstlView]");
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-APP/jsp/");
resolver.setSuffix(".jsp");
resolver.setViewClass(JstlView.class);
resolver.setRedirectContextRelative(true);
resolver.setRedirectHttp10Compatible(false);
return resolver;
}
public static void main(final String[] args)
{
SpringApplication.run(Application.class, args);
}
}
And my Controller:
#Controller
public class InitializationController
{
private static final Logger LOGGER = LogManager.getLogger(InitializationController.class);
#GetMapping("/initialize_application")
public String beginInitialization(ModelMap model)
{
LOGGER.info("Beginning initialization");
...
LOGGER.info("Returning view");
return "initialization/begin";
}
...
}
On startup I see the "Constructing InternalResourceViewResolver" log entry (my view resolver bean is created). When I go to /initialize_application, I get the following error:
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Sun Oct 18 21:45:26 CDT 2020
There was an unexpected error (type=Not Found, status=404).
Looking in the log again, I see "Beginning initialization" and "Returning view," so I know that the 404 is for my JSP and not my controller. My controller is working.
Other things I've tried:
Initially I did not have #EnableWebMvc on my application. Without it, the log was empty except my log statements. When I added #EnableWebMvc, this is now logged with the 404: No mapping for GET /WEB-APP/jsp/initialization/begin.jsp (or whatever other directory I've tried other than "WEB-APP").
I've tried running this directly on the pure command line with mvn spring-boot:run
I've tried running this in IntelliJ IDEA with a Maven run configuration and command spring-boot:run (same result)
I've tried both <packaging>jar</packaging> and <packaging>war</packaging>, but neither make a difference, because neither a JAR nor a WAR are ever made. Maven runs the application directly out of the target/classes directory instead of creating an artifact.
When I've tried WEB-INF or META-INF instead of WEB-APP or webapp or something else, I've seen a logged warning: Path with "WEB-INF" or "META-INF": [WEB-INF/jsp/initialization/begin.jsp]
I have also confirmed that my JSPs are present in target/classes/WEB-APP/jsp (or whatever other directory I've tried other than "WEB-APP"), so they do exist.
I'm at a loss how to proceed. I'm beginning to think I need to ditch Spring Boot and stick with a traditional boilerplate Spring Web MVC application with a Servlet config and a Tomcat installation, but I was really excited about the "just runs" aspect of Spring Boot. Any help would be appreciated.
UPDATE 1
After reading this Spring documentation about JSP limitations, I now know that I have to use <packaging>war</packaging>, and I'm using that now, but it hasn't made a difference. I'm starting to suspect that the underlying problem here is that maven spring-boot:run doesn't create a WAR and run it, it just builds everything to target/classes and runs it from there.
Also, after finding this old, official Spring boot samples application, I've changed my project structure a little:
- source
- production
- java
- [my source code packages]
- resources
- [my resource packages]
- webapp
- META-INF
- WEB-INF
- jsp
- initialization
- begin.jsp
- test
- java
- resources
Updated my view resolver configuration:
resolver.setPrefix("/jsp/");
resolver.setSuffix(".jsp");
And added this to my POM:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.3.1</version>
<configuration>
<warSourceDirectory>source/production/webapp</warSourceDirectory>
</configuration>
</plugin>
If I run mvn package, my WAR gets created correctly (classes and JSPs all where they should be), but neither mvn spring-boot:run nor mvn package spring-boot:run work—I still get 404 errors resolving my JSPs.
The old Spring Boot sample application linked to above puts the JSPs in WEB-INF/jsp, but I can't do that, because that results in the warning Path with "WEB-INF" or "META-INF": [WEB-INF/jsp/initialization/begin.jsp] (and still 404). What's frustrating is that this sample application doesn't exist anymore, nor does any new variation of it. I can't find any updated version that works with the newest version of Spring Boot. The sample application was deleted in 2.2.x.

Can you try by changing the scope of tomcat-embed-jasper to provided as this dependency is needed to compile JSPs.
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<version>[9.0.38,)</version>
<scope>provided</scope>
</dependency>
Edit:
I looked for various spring-boot + jsp projects over internet. I noticed that they have they also have spring-boot-starter-tomcat with provided scope. Can you try this.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<version>[2.3.4.RELEASE,3)</version>
<scope>provided</scope>
</dependency>
References :
https://mkyong.com/spring-boot/spring-boot-hello-world-example-jsp/
https://dzone.com/articles/spring-boot-2-with-jsp-view
Edit-2 :
So this time i created a new springboot project. Did bare minimum setup to get jsp rendered. So basically i followed this tutorial and my project was running fine.
Then I replaced the pom.xml with yours and the i got the same error you mentioned in the question.
Then while doing trial and error i removed the <version>[9.0.38,)</version> from <artifactId>tomcat-embed-jasper</artifactId> and it started working for me.
<!--I have removed version here and it started working for me-->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<!-- <version>[9.0.38,)</version>-->
<scope>provided</scope>
</dependency>
Although i have different directory structure. But as you mentioned that is not the cause of issue.
I have uploaded the project to github. Feel free to pull it run it locally.
Github

Assuming the following location for your web content (which should be outside the classpath AFAIK) source/production/webapp. Spring Boot will ignore this due to a hardcoded path in DocumentRoot for detection of directories when running from the command-line or IDE (it will work when building a war and running that).
As a workaround you can add a TomcatContextCustomizer as a bean to detect the path and set it as the correct base.
package com.my.project;
#SpringBootApplication
public class Application extends SpringBootServletInitializer
{
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application)
{
return application.sources(DemoApplication.class);
}
public static void main(final String[] args) {
SpringApplication.run(Application.class, args);
}
#Bean
public TomcatContextCustomizer docBaseCustomizer()
{
return new TomcatContextCustomizer()
{
public void customize(Context context)
{
File root = new File("source/production/webapp");
if (root.exists() && root.isDirectory())
{
context.setDocBase(root.getAbsolutePath());
}
}
}
}
}
Now add the following to your application.properties
spring.mvc.view.prefix=/jsp/
spring.mvc.view.suffix=.jsp
NOTE: The removal of the other annotations can only be done if your #SpringBootApplication annotated class is in the com.my.project package. It will then automatically detect the other classes (like entities and repositories).

Spring Boot Unable to load class: com.microsoft.sqlserver.jdbc.SQLServerDriver

I've created a new Spring Boot project. I'm trying to setup a DataSource to use MSSQL. However I seem to be getting the error "Unable to load class: com.microsoft.sqlserver.jdbc.SQLServerDriver"
I've placed the file jdbcsql4.jar in a folder in my project /lib/jdbcsq4.jar
In my pom.xml file I've added the following:
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>sqljdbc4</artifactId>
<version>4.0</version>
<scope>system</scope>
<optional>true</optional>
<systemPath>${basedir}/lib/sqljdbc4.jar</systemPath>
</dependency>
I have an application.properties file, and I'm defining the database credentials like this:
secondary.datasource.url = jdbc:sqlserver://1.1.1.1:50109
secondary.datasource.username = sa
secondary.datasource.password = mypassword
secondary.datasource.driver-class-name = com.microsoft.sqlserver.jdbc.SQLServerDriver
Can anyone possibly indicate where I may be going wrong?

I managed to solve this issue by following the instructions in this link http://claude.betancourt.us/add-microsoft-sql-jdbc-driver-to-maven/
EDIT:
The original link above no longer exists, but here's a similar link.
http://biercoff.com/add-microsoft-sql-jdbc-driver-to-maven/

For the ppl who facing these issue.
Add dependency in POM.
Microsoft finally made the driver available on the Maven Central Repository.
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>mssql-jdbc</artifactId>
<version>6.1.0.jre8</version>
</dependency>
you can check here.
Microsoft link