Failed to configure a DataSource url attribute is not specified and no embedded datasource could be configured

Question

I am working on a Spring Boot Batch example with MongoDB and I have already started the mongod server   When I launch my application  I am getting the error below   Any pointers for this issue                               APPLICATION FAILED TO START                              Description   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   Action   Consider the following      If you want an embedded database  H2  HSQL or Derby   please put it on the classpath      If you have database settings to be loaded from a particular profile you may need to activate it  no profiles are currently active     application properties     Mongo database URI  Cannot be set with host  port and credentials  spring data mongodb uri mongodb   localhost test    pom xml   lt dependencies gt           lt dependency gt               lt groupId gt org springframework boot lt  groupId gt               lt artifactId gt spring-boot-starter-batch lt  artifactId gt           lt  dependency gt           lt dependency gt               lt groupId gt org springframework boot lt  groupId gt               lt artifactId gt spring-boot-starter-data-mongodb lt  artifactId gt           lt  dependency gt            lt dependency gt               lt groupId gt org projectlombok lt  groupId gt               lt artifactId gt lombok lt  artifactId gt               lt optional gt true lt  optional gt           lt  dependency gt           lt dependency gt               lt groupId gt org springframework boot lt  groupId gt               lt artifactId gt spring-boot-starter-test lt  artifactId gt               lt scope gt test lt  scope gt           lt  dependency gt       lt  dependencies gt    I have started mongod with the following output   C  Users pc gt mongod 2018-07-07T14 39 39 223 0530 I JOURNAL   initandlisten  journal dir C  data db journal 2018-07-07T14 39 39 230 0530 I JOURNAL   initandlisten  recover   no journal files present  no recovery needed 2018-07-07T14 39 39 478 0530 I JOURNAL   durability  Durability thread started 2018-07-07T14 39 39 589 0530 I CONTROL   initandlisten  MongoDB starting   pid 11992 port 27017 dbpath C  data db  64-bit host DESKTOP-NQ639DU 2018-07-07T14 39 39 589 0530 I CONTROL   initandlisten  targetMinOS  Windows 7 Windows Server 2008 R2 2018-07-07T14 39 39 591 0530 I CONTROL   initandlisten  db version v3 0 5 2018-07-07T14 39 39 592 0530 I CONTROL   initandlisten  git version  8bc4ae20708dbb493cb09338d9e7be6698e4a3a3 2018-07-07T14 39 39 592 0530 I CONTROL   initandlisten  build info  windows sys getwindowsversion major 6  minor 1  build 7601  platform 2  service pack  Service Pack 1   BOOST LIB VERSION 1 49 2018-07-07T14 39 39 592 0530 I CONTROL   initandlisten  allocator  tcmalloc 2018-07-07T14 39 39 593 0530 I CONTROL   initandlisten  options     2018-07-07T14 39 39 595 0530 I JOURNAL   journal writer  Journal writer thread started 2018-07-07T14 39 40 485 0530 I NETWORK   initandlisten  waiting for connections on port 27017 2018-07-07T14 40 39 140 0530 I NETWORK   initandlisten  connection accepted from 127 0 0 1 51340  1  1 connection now open  2018-07-07T14 40 41 663 0530 I NETWORK   conn1  end connection 127 0 0 1 51340  0 connections now open  2018-07-07T14 45 12 421 0530 I NETWORK   initandlisten  connection accepted from 127 0 0 1 51578  2  1 connection now open  2018-07-07T14 45 12 870 0530 I NETWORK   conn2  end connection 127 0 0 1 51578  0 connections now open  2018-07-07T14 46 21 734 0530 I NETWORK   initandlisten  connection accepted from 127 0 0 1 51591  3  1 connection now open  2018-07-07T14 46 22 041 0530 I NETWORK   conn3  end connection 127 0 0 1 51591  0 connections now open  2018-07-07T14 57 47 523 0530 I NETWORK   initandlisten  connection accepted from 127 0 0 1 52534  4  1 connection now open  2018-07-07T14 57 47 910 0530 I NETWORK   conn4  end connection 127 0 0 1 52534  0 connections now open

User · Answer

Failed to configure a DataSource    error  First  we fixed the issue by defining the data source  Next  we discussed how to work around the issue without configuring the data source at all   https   www baeldung com spring-boot-failed-to-configure-data-source

User · Answer

This one worked for me  for MySQL   Application properties   spring datasource url jdbc mysql   localhost 3306 db useSSL false amp useUnicode true amp useJDBCCompliantTimezoneShift true amp  useLegacyDatetimeCode false amp serverTimezone UTC spring datasource username root spring datasource password admin spring jpa hibernate ddl-auto create spring jpa show-sql true

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It can be because you have jpa dependendencies and plugins      just comment it if not use build gradle or pom file   e  g      kotlin  plugin jpa   version  1 3 61      implementation  org springframework boot spring-boot-starter-data-jpa

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This link helped       Spring Boot auto-configuration tries to configure beans   automatically based on the dependencies added to the classpath  And   because we have a JPA dependency  spring-data-starter-jpa  on our classpath  it tries to configure it    The problem  Spring boot doesn t have the all the info needed to configure the JPA data source i e  the JDBC connection properties  Solutions    provide the JDBC connection properties  best  postpone supplying connection properties by excluding some AutoConfig classes  temporary - should be removed eventually    The above link excludes the DataSourceAutoConfiguration class with   SpringBootApplication exclude  DataSourceAutoConfiguration class     But this didn t work for me  I instead  had to exclude 2 AutoConfig classes    SpringBootApplication exclude    DataSourceAutoConfiguration class  XADataSourceAutoConfiguration class

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check your application properties  changing  spring datasource driverClassName com mysql jdbc Driver   to  spring datasource driver-class-name com mysql jdbc Driver   worked for me  Full config   spring datasource url jdbc mysql   localhost 3306 db spring datasource username  spring datasource password     spring datasource driver-class-name com mysql jdbc Driver spring jpa database-platform   org hibernate dialect MySQL5Dialect spring jpa generate-ddl true spring jpa hibernate ddl-auto   update

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I had the same issue resolved by add  lt scope gt provided lt  scope gt            lt dependency gt               lt groupId gt org springframework boot lt  groupId gt               lt artifactId gt spring-boot-starter-data-jpa lt  artifactId gt           lt  dependency gt             lt dependency gt               lt groupId gt org springframework boot lt  groupId gt               lt artifactId gt spring-boot-starter-data-jpa lt  artifactId gt               lt scope gt provided lt  scope gt           lt  dependency gt    Source  https   github com spring-projects spring-boot issues 13796 issuecomment-413313346

User · Answer

If you added  quot spring-boot-starter-data-jpa quot  dependency in pom xml  Please add respective database in dependency like h2 and etc

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Root Cause The JPA  Java persistence API  is a java specification for ORM  Object-Relational Mapping  tools  The spring-boot-starter-data-jpa dependency enables ORM in the context of the spring boot framework  The JPA auto configuration feature of the spring boot application attempts to establish database connection using JPA Datasource  The JPA DataSource bean requires database driver to connect to a database  The database driver should be available as a dependency in the pom xml file  For the external databases such as Oracle  SQL Server  MySql  DB2  Postgres  MongoDB etc requires the database JDBC connection properties to establish the connection  You need to configure the database driver and the JDBC connection properties to fix this exception 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  application properties spring autoconfigure exclude org springframework boot autoconfigure jdbc DataSourceAutoConfiguration   application yaml spring  autoconfigure      exclude org springframework boot autoconfigure jdbc DataSourceAutoConfiguration  By Programming  SpringBootApplication exclude     DataSourceAutoConfiguration class

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For spring boot version 2 X X below configuration worked for me   spring datasource url jdbc mysql   localhost 3306 rest spring datasource username  spring datasource password  spring datasource driver-class-name com mysql cj jdbc Driver spring jpa database-platform   org hibernate dialect MySQL5Dialect spring jpa generate-ddl true spring jpa hibernate ddl-auto   update    Old jdbc driver is deprecated  The new one is mentioned on above configuration  Please use the same and restart the project

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If you re using Gradle  rebuild Gradle can solve this problem

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For me the resource folder was getting excluded on a maven update build  I went to Build Path gt Source and found that src main resources have  quot Excluded    quot   I removed that entry  Clicked on Excluded    gt Remove gt Apply and Close   Then it worked fine

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It s happening because the  valerio-vaudi said      Your problem is the dependency of spring batch   spring-boot-starter-batch that has a spring-boot-starter-jdbc   transitive maven dependency    But you can resolve it set the primary datasource with your configuration    Primary   Bean name    dataSource     ConfigurationProperties prefix    spring datasource    public DataSource getDataSource           return DataSourceBuilder create   build          Bean  public JdbcTemplate jdbcTemplate DataSource dataSource          return new JdbcTemplate dataSource

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I had the same issue and tried all suggestions above  but didnt work out  I am posting my answer for furture readers  Before it was working fine but somehow it apeared again  I resolved this issue by removing some unnecessary plugnins and depencies from pom xml   First of all  I changed default packaging type to jar  Spring Boot Initializer gives pom in packaging    lt packaging gt jar lt  packaging gt   I added unintentional some plugins    lt plugin gt       lt artifactId gt maven-war-plugin lt  artifactId gt       lt configuration gt           lt attachClasses gt true lt  attachClasses gt           lt webXml gt target web xml lt  webXml gt           lt webResources gt               lt resource gt                   lt directory gt src main webapp lt  directory gt                   lt filtering gt true lt  filtering gt               lt  resource gt           lt  webResources gt       lt  configuration gt   lt  plugin gt    I hope my answer will help someone

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If you are using YAML for configuration  then it might be indentation problem   Thoroughly check the YAML files

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I have add this annotation on the main class of my spring boot application and everything work perfectly   SpringBootApplication exclude    DataSourceAutoConfiguration class

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Excluding the DataSourceAutoConfiguration class worked for me    SpringBootApplication exclude    DataSourceAutoConfiguration class

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Just add    SpringBootApplication exclude    DataSourceAutoConfiguration class    works for me   I was getting same error I tried with  EnableAutoConfiguration exclude      didn t work

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Your problem is the dependency of spring batch spring-boot-starter-batch that has a spring-boot-starter-jdbc transitive maven dependency   Spring Batch is a framework for building reliable and fault tolerance enterprise batch jobs  It supports many features like restarting a failed batch  recording the status of the batch execution and so on  In order to achieve that Spring Batch uses a database schema to store the status of the registered jobs  the auto-configuration already provides you the basic configuration of the required data source and it is this configuration that requires the relational database configuration    To solve this you must include some database driver like mysql  h2  etc  to configure the url    Update  Just for getting start you can configure your application yml like below   spring    datasource      driver-class-name  org h2 Driver     url  jdbc h2 mem localhost DB CLOSE ON EXIT FALSE     username  admin     password    and of course in your pom xml include the h2 dirver like this    lt  xml version  1 0  encoding  UTF-8   gt   lt project xmlns  http   maven apache org POM 4 0 0  xmlns xsi  http   www w3 org 2001 XMLSchema-instance           xsi schemaLocation  http   maven apache org POM 4 0 0 http   maven apache org xsd maven-4 0 0 xsd  gt       lt modelVersion gt 4 0 0 lt  modelVersion gt        lt groupId gt com example lt  groupId gt       lt artifactId gt demo lt  artifactId gt       lt version gt 0 0 1-SNAPSHOT lt  version gt       lt packaging gt jar lt  packaging gt        lt name gt demo lt  name gt       lt description gt Demo project for Spring Boot lt  description gt        lt parent gt           lt groupId gt org springframework boot lt  groupId gt           lt artifactId gt spring-boot-starter-parent lt  artifactId gt           lt version gt 2 0 3 RELEASE lt  version gt           lt relativePath  gt   lt  -- lookup parent from repository -- gt       lt  parent gt        lt properties gt           lt project build sourceEncoding gt UTF-8 lt  project build sourceEncoding gt           lt project reporting outputEncoding gt UTF-8 lt  project reporting outputEncoding gt           lt java version gt 1 8 lt  java version gt       lt  properties gt        lt dependencies gt                       lt dependency gt               lt groupId gt com h2database lt  groupId gt               lt artifactId gt h2 lt  artifactId gt           lt  dependency gt             lt  dependencies gt        lt  project gt    The motivation  because you can not use mongo for this purpose  is that the usage of mongo is provided only for item readers and writers and not for managing the internal database of Spring Batch that is an internal schema  not a business schema  The query is plain SQL query and the internal abstraction relies on a relational database  It is necessary to have a database with ACID capability because every batch reads and writes a chunk of work and saves that information in order to restart the job  A NoSql solution is not suitable for this   At the end you have configured a relational database in order to prepare Spring Batch for internal capability  the internal abstraction does not rely on mongo only on jdbc  Then mongo can be used but for the business side of the batch via item reader writer   I hope that this can help you to clear your doubts

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Check your application properties file  One of the probable reason for it is that  you might be added  quot Spring Data quot  maven plugin and you are not providing the datastore details in application properties file

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It can be that your resources directory is not added to classpath when creating a project via Spring Initializr  So your application is never loading the application properties file that you have configured   To make a quick test if this is the case  add the following to your application properties file   server port 8081   Now when running your application you should see in the spring boot console output something like this   INFO  o s b w e tomcat TomcatWebServer - Tomcat started on port s     8081    http  with context path      If your port is still default 8080 and not changed to 8081  your application properties files is obviously not loading   You can also check if your application runs with gradle bootRun from command line  Which most likely will be work   Solution    Close IntelliJ  then inside your project folder delete the   idea  folder Reimport your project to IntelliJ like following   Import Project  -   select ONLY your build gradle file to import    IntelliJ will automatically grab the rest  build and run your application again   See official answer by IntelliJ Support  IDEA-221673

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I think when importing modules you have imported another package  Go to modules and remove al of them  After that import modules from the package of the project

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Not to the point of the question  can be related though   but  if you bootstrap a new project and wondering why do you get the same error  it may come from the artifactId of spring-boot-starter-data-jpa in the dependency section  I gave the dependency below  You will need to define the database to get rid of this     lt dependency gt       lt groupId gt org springframework boot lt  groupId gt       lt artifactId gt spring-boot-starter-data-jpa lt  artifactId gt   lt  dependency gt

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I removed an obsolete dependency on mybatis in the pom xml to get mine running

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Adding h2 dependency to the pom file can resolve such issues                                        com h2database             h2

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It simply means you have downloaded a spring starter code with database dependency without configuring your database  So it doesn t know how to connect  For Spring boot version 2 18 do the following steps to fix it   Create a database for the driver you have downloaded ie mysql mongo etc   In your applications properties file add the db connection info  Sample is given for mysql if your db is mongo change it for mongo    spring datasource url jdbc mysql   localhost 3306 db name that you created spring datasource username your db username here spring datasource password your db pass here spring datasource driver-class-name com mysql jdbc Driver spring jpa database-platform   org hibernate dialect MySQL5Dialect spring jpa generate-ddl true spring jpa hibernate ddl-auto   update   Reboot the server it will be running

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I meet same error when start a new project  Use command line works for me    gradlew bootRun

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In my case   spring profiles   production    remove it to fix   in application properties was the reason

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If datasource is defined in application resources  make sure it is locate right under src main and add it to the build path

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If you have a JPA dependency in your pom xml then just remove it  This solution worked for me

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Add this  annotation in main java file  EnableAutoConfiguration exclude DataSourceAutoConfiguration class

[spring] Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured

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