To use the MyBatis-Spring-Boot-Starter module, you just need to include the mybatis-spring-boot-autoconfigure. As you may already know, to use MyBatis with Spring you need at least an SqlSessionFactory and at least one mapper interface. You just need to create a normal Spring boot application and let the mapper be injected like follows available on Spring 4.

You may want to specify a custom annotation or a marker interface for scanning. If so, you must use the MapperScan annotation. See more about it in the MyBatis-Spring reference page. An instance of a SqlSessionTemplate is created and added to the Spring context, so you can use the MyBatis API letting it be injected into your beans like follows available on Spring 4.

Introduction

The MyBatis-Spring-Boot-Starter will search beans that implements the ConfigurationCustomizer interface by automatically, and call a method that customize a MyBatis configuration.

Available since 1. The VFS is used for searching classes e.

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The auto-configuration feature provided by the MyBatis-Spring-Boot-Starter used it automatically, but it does not use automatically by a manual configuration e. If you want to customize the LanguageDriver that creating by auto-configure, please register user defined bean. Last Published: 10 March Version: 2.

By using this module you will achieve: Build standalone applications Reduce the boilerplate to almost zero Less XML configuration.

Installation To use the MyBatis-Spring-Boot-Starter module, you just need to include the mybatis-spring-boot-autoconfigure. Maven If you are using Maven just add the following dependency to your pom. Gradle If using gradle add this to your build.

Spring boot integrates mybatis and SQL Server practices

MyBatis uses the prefix mybatis for its properties. If this not specifies, the MyBatis deal as type alias all classes that searched from type-aliases-package.

This feature requires to use together with mybatis-spring 2. Specified properties can be used as placeholder on MyBatis config file and Mapper file. For detail see the MyBatis reference page. Set true to enable lazy initialization. About available nested properties see the MyBatis reference page. NOTE : This property cannot be used at the same time with the config-location. About available nested properties see the MyBatis Thymeleaf reference page.

About available nested properties see the MyBatis FreeMarker reference page. This feature requires to use together with mybatis-freemarker 1. About available nested properties see the MyBatis Velocity reference page. This feature requires to use together with mybatis-velocity 2. For example: application.

Customization for LanguageDriver If you want to customize the LanguageDriver that creating by auto-configure, please register user defined bean. Running Samples The project provides two samples so you play and experiment with them: Category Sample Description Core 1st Sample Show the simplest scenario with just a mapper and a bean where the mapper is injected into.

This is the sample we saw in the Quick Setup section.

mybatis spring boot 2

LanguageDriver 3rd Sample Shows how to use the language driver for Thymeleaf with mybatis-thymeleaf. Web 8th Sample Show how to use the web environment. Packages to search for type aliases. The super class for filtering type alias. Packages to search for type handlers.

The default scripting language driver class.MyBatis tests are transactional and rollback at the end of each test by default, for more details refer to the relevant section in the Spring Reference Documentation. Also regular Component beans will not be loaded into the ApplicationContext. However if you prefer to run tests against a real database, you can use the AutoConfigureTestDatabase as follow:.

Therefore by depend on bean definition methods, there is case that an unexpected error is occurred or unnecessary components are loaded into ApplicationContext. This behavior can prevent by creating a SpringBootApplication class into same package as test class as follow:. Last Published: 10 March Version: 2. By using this module you will can be: Can use the MybatisTest that setup test components for testing pure MyBatis component Can import dependency artifacts for performing tests for pure MyBatis component.

SPRING BOOT 2 - How To Handle Exceptions - 2019

Installation Maven If you are using Maven just add the following dependency to your pom. Gradle If using gradle add this to your build. Test for Mapper interface if you create a test case for following mapper interface, you add just MybatisTest on your test case class. Mapper interface : package sample. Mapper; import org. Param; import org. Select; import sample. Test; import org.

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RunWith; import org. MybatisTest; import sample. City; import org. Autowired; import org. SpringRunner; import static org. DAO class : package sample. SqlSession; import sample. MybatisTest; import org. Import; import org.

SpringRunner; import sample. City; import static org. However if you prefer to run tests against a real database, you can use the AutoConfigureTestDatabase as follow: package sample. This behavior can prevent by creating a SpringBootApplication class into same package as test class as follow: package sample. RunWith SpringRunner. ExtendWith SpringExtension. Appendix Imported auto-configuration The MybatisTest will import following auto-configuration classes. CacheAutoConfiguration org.

FlywayAutoConfiguration org. DataSourceAutoConfiguration org. JdbcTemplateAutoConfiguration org. LiquibaseAutoConfiguration org. TransactionAutoConfiguration org.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. How do I modify application.

How do I autowire it to be used by a different repository? Most answers do not provide how to use them as datasource itself and as transactiononly how to config them.

If you do care about transaction, you have to define DataSourceTransactionManager for both of them, like this:. Refer the official documentation. Creating more than one data source works same as creating the first one. You might want to mark one of them as Primary if you are using the default auto-configuration for JDBC or JPA then that one will be picked up by any Autowired injections. I also had to setup connection to 2 datasources from Spring Boot application, and it was not easy - the solution mentioned in the Spring Boot documentation didn't work.

After a long digging through the internet I made it work and the main idea was taken from this article and bunch of other places. The following solution is written in Kotlin and works with Spring Boot 2. Main issue was that it was not enough just to setup different DataSource configs, but it was also necessary to configure EntityManagerFactory and TransactionManager for both databases.

Issue with properties was that I had to define jdbc-url instead of url because otherwise I had an exception. Also you might have different naming schemes in your databases, which was the case for me. Since Hibernate 5 does not support all previous naming schemes, I had to use solution from this answer - maybe it will also help someone as well. Since we are going to get access two different databases db1, db2we need to configure each data source configuration separately like:.

If the data sources are on different servers its better to use Component along with Primary annotation. The following code snippet works well on two different data sources at different locations. I have used two data sources for same JPA entities from same package.

The DDL connection should be closed after DDL statements are executed, to prevent further usage of super user previlleges anywhere in the code.Notice that there are no SqlSession or MyBatis references in this code. Nor is there any need to create, open or close the session, MyBatis-Spring will take care of that.

mybatis spring boot 2

The way you register a mapper depends on whether you are using a classic XML configuration or the new 3. There is no need to specify the mapper in a MyBatis configuration file unless the mapper XML files are in a different classpath location.

These can be set through the respective sqlSessionFactory and sqlSessionTemplate properties. If both properties are set, the SqlSessionFactory is ignored. Since the SqlSessionTemplate is required to have a session factory set, that factory will be used by MapperFactoryBean. There is no need to register all your mappers one by one. Instead, you can let MyBatis-Spring scan your classpath for them. MapperScan requires Spring 3. Since 2. The motivation for adding this option is supporting a lazy initialization control feature supported by Spring Boot 2.

If developer want to use lazy initialization for mapper bean, it should be set to the true expressly. If any of following conditions are matches, usually the lazy initialization feature cannot use on your application. The base-package attribute lets you set the base package for your mapper interface files. You can set more than one package by using a semicolon or comma as a separator.

Mappers will be searched for recursively starting in the specified package s. But if you are using more than one DataSource autowire may not work for you. In this case you can use the factory-ref or template-ref attributes to set the right bean name to use.

The annotation property specifies an annotation to search for. The marker-interface attribute specifies a parent interface to search for. If both properties are specified, mappers are added for interfaces that match either criteria.

By default, these two properties are null, so all interfaces in the given base package s will be loaded as mappers. Discovered mappers will be named using Spring default naming strategy for autodetected components see the Spring reference document Core Technologies -Naming autodetected components.

That is, if no annotation is found, it will use the uncapitalized non-qualified class name of the mapper. But if either a Component or a JSR Named annotation is found it will get the name from the annotation. Notice that you can set the annotation attribute to org.Learn what is a datasource and how to create and customize DataSource bean in Spring boot applications.

A datasource is a factory for connections to any physical data source. An alternative to the DriverManager facility. It uses a URL along with some credentials to establish a database connection. An object that implements the javax. Spring boot allows defining datasource configuration in both ways i. Java config and properties config. If not already defined, include spring-boot-starter-data-jpa to project. It brings all necessary dependencies including JDBC drivers for various databases e.

If we are planning to use embedded database at some step e. DataSource configuration is provided by external configuration properties spring.

The properties configuration decouple the configuration from application code. This way, we can import the datasource configurations from even configuration provider systems. We often do not need to specify the driver-class-namesince Spring Boot can deduce it for most databases from the url.

Recommended way to create DataSource bean is using DataSourceBuilder class within a class annotated with the Configuration annotation. The datasource uses the underlying connection pool as well. For a pooling DataSource to be created, Spring boot verifies that a valid Driver class is available.

If we set spring. The auto-configuration first tries to find and configure HikariCP. If HikariCP is available, it always choose it. Otherwise, if the Tomcat pooling is found, it is configured.

It is also possible to fine-tune implementation-specific settings by using their respective prefix spring. For example, we can use below properties to customize a DBCP2 connection pool.

mybatis spring boot 2

To configure multiple data sources, create as many bean definitions you want but mark one of the DataSource instances as Primarybecause various auto-configurations down the road expect to be able to get one by type. Remember that if we create your own DataSource, the auto-configuration backs off. So we are responsible for providing configurations for all datasource beans. While autowiring the datasource, spring boot will prefer the primary datasource i.

To autowire another non-primary datasource, use Qualifier annotation. Spring boot provides very easy ways to create datasource beans — either using properties config or using java config Bean.

Spring boot provides ready-made auto configuration to use which can be further customized with advanced options in application. HikariCP comes inbuilt with spring-boot-starter-jdbc or spring-boot-starter-data-jpa starters.

We can configure multiple datasources and one of them must be marked as Primary. Primary datasource is autowired by default, and other datasources need to be autowired along with Qualifier annotation. A family guy with fun loving nature.You are not logged in to any team. List of all users List of all organizatioins Advent Calendar. Signup Login. Improve article.

Help us understand the problem. What is going on with this article? It's illegal copyright infringement, privacy infringement, libel, etc. It's socially inappropriate offensive to public order and morals. It's advertising. It's spam. Other than the above, but not suitable for the Qiita community violation of guidelines. Java MyBatis Thymeleaf spring-boot. More than 1 year has passed since last update. User ; import java. List ; import org.

Mapper ; import org. User ; import com. UserMapper ; import java. List ; import javax. Valid ; import org. Autowired ; import org. Controller ; import org. Model ; import org. BindingResult ; import org. DeleteMapping ; import org. GetMapping ; import org. ModelAttribute ; import org. PathVariable ; import org. PostMapping ; import org.

PutMapping ; import org.Unfortunately, Spring 3 development ended before MyBatis 3 was officially released.

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Because the Spring team did not want to release with code based on a non-released version of MyBatis, official Spring support would have to wait. Given the interest in Spring support for MyBatis, the MyBatis community decided it was time to reunite the interested contributors and add Spring integration as a community sub-project of MyBatis instead. Before starting with MyBatis-Spring integration, it is very important that you are familiar with both MyBatis and Spring terminology.

This document does not attempt to provide background information or basic setup and configuration tutorials for either MyBatis or Spring. A special thanks goes to all the special people who made this project a reality in alphabetical order : Eduardo Macarron, Hunter Presnall and Putthiphong Boonphong for the coding, testing and documentation; Andrius Juozapaitis, Giovanni Cuccu, Mike Lanyon, Raj Nagappan and Tomas Pinos for their contributions; and Simone Tripodi for finding everyone and bringing them all back to the project under MyBatis ; Without them, this project wouldn't exist.

If you find this documentation lacking in any way, or missing documentation for a feature, then the best thing to do is learn about it and then write the documentation yourself! Sources of this manual are available in xdoc format at project's Git Fork the repository, update them and send a pull request. Do you want to read about MyBatis in your own native language?

Fill an issue providing patches with your mother tongue documentation! Last Published: 09 March Version: 2. Introduction What is MyBatis-Spring? Requirements Before starting with MyBatis-Spring integration, it is very important that you are familiar with both MyBatis and Spring terminology. Acknowledgements A special thanks goes to all the special people who made this project a reality in alphabetical order : Eduardo Macarron, Hunter Presnall and Putthiphong Boonphong for the coding, testing and documentation; Andrius Juozapaitis, Giovanni Cuccu, Mike Lanyon, Raj Nagappan and Tomas Pinos for their contributions; and Simone Tripodi for finding everyone and bringing them all back to the project under MyBatis ; Without them, this project wouldn't exist.

Help make this documentation better… If you find this documentation lacking in any way, or missing documentation for a feature, then the best thing to do is learn about it and then write the documentation yourself!

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