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This article mainly shows you "springboot how to use things annotations", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "how to use springboot things annotations" this article.

1. Add the annotation @ EnableTransactionManagement to the startup class Application

Import tk.mybatis.spring.annotation.MapperScan;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.transaction.annotation.EnableTransactionManagement @ SpringBootApplication@EnableTransactionManagement / / the latest version of the bookstore management annotation mode can be omitted from @ MapperScan ("com.xz.springboot.mapper") / / scan all the interfaces under the package and generate the implementation class public class Springboot01Application {public static void main (String [] args) {SpringApplication.run (Springboot01Application.class, args);}} for the interface.

two。 Add @ Transactional to the business tier

Import com.xz.springboot.bean.User;import com.xz.springboot.mapper.UserMapper;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import org.springframework.transaction.annotation.Transactional;import java.util.List;@Servicepublic class UserService {@ Autowired private UserMapper userMapper; public List queryAll () {System.out.println ("hot deployment"); return userMapper.findAll () } @ Transactional public void deleteById (Integer id) {userMapper.deleteById (id); / / int censor 10Universe 0;}} these are all the contents of the article "how to use things Notes for springboot". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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