Failed to auto-configure a DataSource: 'spring.datasource.url' is not specified

Question

I have created a basic spring boot application from SPRING INITIALIZR with the Web, MongoDB and JPA dependencies.

When I try to run the spring boot

Answer 1

@Bhabadyuti Bal give us a good answer, in gradle you can use :

compile 'org.springframework.boot:spring-boot-starter-data-jpa' 
compile 'com.h2database:h2'

in test time :

testCompile 'org.reactivecommons.utils:object-mapper:0.1.0'
testCompile 'com.h2database:h2'

Answer 2

Add your dependencies like mongodb,web,jpa. Delete/clear the remainings.

<dependencies>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
</dependencies>

Answer 3

Seems there is missing MongoDB driver. Include the following dependency to pom.xml:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

Answer 4

your dependency based on data is trying to find their respective entities which one has not been created, comments the dependencies based on data and runs the app again.

<!-- <dependency> -->
        <!-- <groupId>org.springframework.boot</groupId> -->
        <!-- <artifactId>spring-boot-starter-data-jpa</artifactId> -->
        <!-- </dependency> -->

Answer 5

Since you have added both mongodb and data-jpa dependencies in your pom.xml file, it was creating a dependency conflict like below

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

Try removing jpa dependency and run. It should work fine.

Answer 6

I ran into this problem when I simply mistyped my jdbc url in application.properties. Hope this helps someone: before:

spring.datasource.url=jdbc://localhost:3306/test

after:

spring.datasource.url=jdbc:mysql://localhost:3306/test