spring data hadoop boot example

[From] Http://www.tuicool.com/articles/JBvQrmjThis article explains how to use ElasticSearch to achieve full-text search based on spring boot.Version notesThe version of Spring data ElasticSearch needs to match the spring boot, elasticSearch version.

Spring Boot starts to load data CommandLineRunner In practical applications, we need to load some data or do some things when the project service starts.To solve this problem, Spring Boot provides us with a method to implement it

not say much.Where the type attribute of DataSource can be specified to the data source we need, the default is not specified: Org.apache.tomcat.jdbc.pool.DataSourceOf course you can also configure these data sources into the primary DataSource database, and then read the database to generate multiple data sources. Of course, the necessity of doing so is not big

Github:https://github.com/asd821300801/spring-boot/tree/spring-boot-redis Preliminary Preparation Create Spring Boot project ...... Maven joins the necessary dependencies application.properties spring.redis.host=127.0.0.1 spr

ObjectiveIn the previous article we created a single data source using spring Boot+mybatis, where a single data source does not need to be created by ourselves, and spring boot autoconfiguration creates a good

Spring Boot RestTemplate: three methods for submitting form data: springresttemplate In the REST interface design, using RestTemplate for interface testing is a common method, but in the process of use, due to the large number of method parameters, many people confuse the differences between the form submission and Payload submission methods, and the interface de

": "2", "Name": "Bes" Ijing "," state ":" BJ "},{" Country ":" CN "," id ":" 3 "," Name ":" Guangzhou "," state ":" GD "}]Actual: [{"id": "1", "name": "San Francisco", "state": "CA", "Country": "US"},{"id": "2", "name": "Beijing", "state": " BJ "," country ":" CN "},{" id ":" 3 "," Name ":" Guangzhou "," state ":" GD "," country ":" CN "}] * */}}References Wang Yunfei. "Spring Boot Combat"

Problem description Spring Boot Chinese returned to the browser garbled parse into a question mark?? Fastjson Jackjson Spring boot new configuration to resolve background return JSON to the foreground after the Chinese garbled, there is a return JSON data error:

Application.properties file and to set properties for the Bean* @return Data source*/ @Bean("Master") @Primary @ConfigurationProperties(prefix ="Application.server.db.master") PublicDataSourceMaster() { returnDatasourcebuilder.create (). build ();}@Bean("Slave") @ConfigurationProperties(prefix ="Application.server.db.slave") PublicDataSourceslave() { returnDatasourcebuilder.create (). build ();}@Bean("Dynamicdatasour

First we create a MAVEN project, such as:Step Two: Configure Pom.xmlStep three: Create the package structure and class as shownFourth step: Write the above three classesUser:Provides a get, set method.Fastjsoncontroller:APP:When the above steps are complete, execute the main method of the app class, waiting for the project to start. And then access it in the browser.Http://localhost:8080/getJson, return results such as:Find Chinese garbled, then modify the controller class, such as:And then visi

First we create a MAVEN project, such as:Step Two: Configure Pom.xmlStep three: Create the package structure and class as shownFourth step: Write the above three classesUser:Provides a get, set method.Fastjsoncontroller:APP:When the above steps are complete, execute the main method of the app class, waiting for the project to start. And then access it in the browser.Http://localhost:8080/getJson, return results such as:Find Chinese garbled, then modify the controller class, such as:And then visi

Recently in the use of Spring boot development project, which has a project to use a multi-data source configuration, online information or not too much, go a lot to find a suitable, write their own share, make a note, may be useful, the first blog, not to spray!!Let's start with my business scenario, which uses two types of databases, one MySQL and the other SQL

Method One: How to load some initialization data that is needed for startup.To solve this problem, spring Boot provides a way for us to implement the interface Commandlinerunner. No additional configuration is required, so just create a class to implement the interface Commandlinerunner. After the Spring

>1.5.8.releaseversion> RelativePath/> Parent> Properties> project.build.sourceEncoding>utf-8project.build.sourceEncoding> project.reporting.outputEncoding>utf-8project.reporting.outputEncoding> java.version>1.8java.version> Properties> Dependencies> Dependency> groupId>org.springframework.bootgroupId> Artifactid>spring-boot-starterArtifactid> Dependency> Dependency> groupId>org.springframework.bootgroupId>

If we want to use a third-party JSON parsing framework in spring boot:1) We need to introduce third-party package dependencies in the Pom.xml file;2) Implementation method:Method 1 requires inheriting the Webmvcconfigureradapter class in the startup class and overriding the Configuremessageconverters method of the class.Method 2. We use @bean to inject third-party analytic frameworks directly.1, the introdu

Use spring boot to retrofit an old project because there are multiple data sources and the following error has been reported at startup caused By:org.springframework.beans.factory.NoUniqueBeanDefinitionException:No qualifying bean of type [ Javax.sql.DataSource] is defined:expected single matching beans but found 5: Turned out to be @EnableAutoConfigurationThi

updates or deletes the data, and the other transaction two times queries the data inconsistently. Phantom reads: One transaction adds a new operation to the data, and the other transaction two times queries the data is inconsistent. Dirty reads: Primarily for column content changes. Phantom reads: Mainly for the chang

Spring-boot official case analysis of the DATA-JPAPackage SAMPLE.DATA.JPA;Import Org.junit.Before;Import Org.junit.Test;Import Org.junit.runner.RunWith;Import org.springframework.beans.factory.annotation.Autowired;Import org.springframework.boot.test.SpringApplicationConfiguration;Import Org.springframework.test.context.ActiveProfiles;Import Org.springframework.t

=" Person") Public classPerson {@Id//JPA is not supported for UUID, but it can be implemented using hibernate. @GeneratedValue (generator ="UUID") @GenericGenerator (name="UUID", strategy ="Org.hibernate.id.UUIDHexGenerator") PrivateString ID; PrivateString name;　　　　 PublicPerson (string ID, string name) {super (); This. ID =ID; This. Name =name; }... Setter/getter method}Iv. RepositoryPackage Com.ltchu.design.repository;import Org.springframework.data.repository.crudrepository;import Com.

=NewFastjsonconfig (); Fastconf.setserializerfeatures (Serializerfeature.prettyformat); Fastjsonconverter.setfastjsonconfig (fastconf); Converters.add (Fastjsonconverter); } /*@Bean public httpmessageconverters fastjsonconverters () {Fastjsonhttpmessageconverter Fastjsonconverter = NE W Fastjsonhttpmessageconverter (); Fastjsonconfig fastconf = new Fastjsonconfig (); Fastconf.setserializerfeatures (Serializerfeature.prettyformat);