spring boot database example

I. OverviewSpring Boot Actuator is a child project of spring boot. With it, you can add some production-level services to your app without requiring special configuration. This tutorial shows the use of Eclipse + maven to build a restful app from scratch.The effect of this application is to access http://localhost:8080/fuck?name=xxx, return a JSON string, and acc

Spring Boot series (eight) using the MongoDB database in spring boot This article describes the use of the MongoDB database in spring boot,

Maven Project Build spring boot + spring mvc + JPA example, mavenmvc This article describes how to build spring boot + spring mvc + JPA by using Maven: Add

String test () {log.info ("test"); return "OK"; } @RequestMapping ("User") public user GetUser (@RequestParam ("id") long ID) {log.info ("Get user"); return Users.getuser (ID); } @RequestMapping ("item") Public item GetItem (@RequestParam ("id") long ID) {log.info ("Get item"); return Items.getitem (ID); } } Application.java Package SB; Import org.springframework.boot.SpringApplication; Import org.springf

' ( ' id ' bigint not null auto_increment, ' name ' varchar (255) NULL, ' age ' int NULL, PRIMARY KEY (' id ') ); INSERT into info (name,age) VALUES (' Mick ', ' a '); INSERT into info (name,age) VALUES (' Mick1 ', ' a '); INSERT into info (name,age) VALUES (' Mickjoust1 ', ' + '); INSERT into info (name,age) VALUES (' Joust ', ' 22 '); Start View Homepage: http://localhost:8080View database data: Http://localhost:8080/show Summary This chapter

It 's written in front . This demo shows you how to troubleshoot a common spring boot autoconfiguration error step-by-step. Https://github.com/hengyunabc/spring-boot-inside/tree/master/demo-database-type-NONE debugging and Troubleshooting cannot determine Embedded

disabled Set it to true otherwise the login will be reported There are also implementations of a Userdetailsservice class as follows 1 @Service 2 public class Authuserservice implements userdetailsservice{ 3 4 @Autowired 5 Mstusersmapper Mstusersmapper; 6 7 @Override 8 public userdetails Loaduserbyusername (String username) throws usernamenotfoundexception { 9 users Users =mstusersmapper.selectbyprimarykey (username); The if (users = = null) {One

") userService. create ("$ username c", "$ password 3") userService. create ("$ username d", "$ password 4") userService. create ("$ username e", "$ password 5") log.info ("total users $ {userService. allUsers} ") // Delete two userservices. deleteByName ("$ username a") userService. deleteByName ("$ username B") log.info ("total users $ {userService. allUsers }")}} The JdbcTemplate described above is only the most basic operations. For more information about how to use other data access operati

Spring boot rest example Introduction: This article will help you use Spring Boot to create simple REST services. You will learn What is a REST service? How to Use Spring Initializr to guide the creation of Rest service appli

a Userdetailsservice class as follows1 @Service 2 public class Authuserservice implements userdetailsservice{3 4 @Autowired 5 Mstusersmapper Mstusersmapper; 6 7 @Override 8 public userdetails Loaduserbyusername (String username) throws Usernamenotfoundexception { 9 users Users =mstusersmapper.selectbyprimarykey (username), if (Users = = null) {One throw new Usernamenotfoundexception ("User not found for name:" +username); }13 ret

thinking to manipulate the database at will. Hibernate can be applied to any JDBC application, both in Java client applications and in servlet/jsp Web applications, and most revolutionary of all, hibernate can replace CMP in the EE architecture of the EJB application. The task of achieving data persistence.?? This article describes how to use spring Data JPA and hibernate to connect and process the MySQL d

This article teaches you how to store the JSON content that you configure under the project in the MongoDB database when the project is started.As we all know, Spring Boo Project T is started with a main function. So we want to be able to do something at the start (that is, listen for startup events). By looking at the Spring

Tags: ATI term related information Add Solution class automaticError Reason: Spring Boot defaults to loading the Org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration class, and the Datasourceautoconfiguration class uses the The @Configuration annotation injects the DataSource bean into spring. Because there is no configuration information relat

}, Scanbasepackages = {"Com.ppdai.pointshop.web.controller"}) public class Pointshopwebapplication {public static void Main (string[] args) {Springapplication.run (pointshopwebapplication.class, args);}}But unfortunately, it's useless.So with maven download good springboot source code, and then debugging breakpoints in, see what is the situation, and finally found the problem lies: Because I'm a new project and I don't have a data source configured, but I want to start the project without config

Example of integrated development of Spring Boot with Spark and Cassandra systems, sparkcassandra This article demonstrates how to use Spark as the analysis engine and Cassandra as the data storage, and use Spring Boot to develop the driver. 1. Prerequisites Install Spark

In the Spring boot project using the MySQL database for database additions and deletions, the following error occurred:Error starting ApplicationContext. To display the Auto-configuration report re-run your application with ' debug ' enabled.2017-06-15 15:04:37.122 ERROR 10072 ---[Restartedmain] o.s.boot.springapplicat

directly in Main, then the following plugin must be added, otherwise it will not start. This configuration is not required if you are using Maven's spring-boot:run. (When I'm testing, I run it directly in main if I don't configure the following plugin.) ） the coding of 1.6Hello The fourth step, the real program begins, we need a startup class, and then in the start class declaration let springboot automatically give us the configuration that

Spring boot aop record method execution time code example, springaop This article focuses on the implementation code of spring boot aop recording method execution time, as follows. In order to optimize the performance, we need to calculate the execution time of each method f

abnormal = = = "Quick fix = = "Add annotations on Springboot's startup class:@EnableAutoConfiguration (Exclude={datasourceautoconfiguration.class})Principle: Springboot is a convention greater than the configuration, it will load datasource by default, if you do not add JDBC information in the configuration file, then will be an error. More details you can see other blogs, I did not read the source.Summary: As a novice, although the solution and principle is very simple, but the harvest is to un

configuration to [email protected] started 6 plugins. Copy CodeOpen the browser and access: http://localhost:15672/, and use the default user guest login, the password is also guest. We can see the administration page as follows:, we can see some of the basic concepts mentioned in the previous chapters, such as Connections, Channels, exchanges, queue, and so on. The first use of the reader, can be opened to see what the content, familiar with the RABBITMQ Server service side.Click the