spring-boot-starter | 易学教程

Spring boot auto configuration with dependency and without @ComponentScan

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问题 Spring boot provides @ComponentScan to find packages to be scanned. I am building a library which has @RestControllers inside with package com.mylib.controller . There are other classes as well with stereotype annotations in different packages. So, if some one is developing SpringBoot Application with com.myapp base package. He uses my library in his application. He need to mention @ComponentScan("com.mylib") to discover stereotype components of library. Is there any way to scan components

Spring boot auto configuration with dependency and without @ComponentScan

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创建自己的Spring Boot starter

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Spring Boot starter 的组件 autoconfigure starter autoconfigure模块包含自动配置的代码 starter模块包含autoconfigure模块所依赖的包以及通用的包命名不要以 spring-boot 开头 xxx-spring-boot-autoconfigure 及 xxx-spring-boot-starter autoconfigure 和 starter 合在一起 xxx-spring-boot-starter configuration key 不要和Spring Boot使用的冲突为了更好的支持IDE（properties文件中自动提示）需要在autoconfigure模块下提供 META-INF/spring-configuration-metadata.json swagger-spring-boot-starter 实例 swagger-spring-boot-starter swaager-spring-boot-autoconfigure swagger 配置提取 documentationType:[name:"",version:""]# 取值：swagger 1.2；swagger 2.0；spring-web 1.0 pathMapping # 映射的url basePackage #

Togglz Yml/Yaml Configuration for My SpringBoot Not working

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问题 Trying to create Feature Toggles using Togglz. Made below configurations/code in my Application, bootstrap.yml: togglz: enabled: true features: FEATURE_ONE: true Feature Enum Class: public enum AppFeatures implements Feature { @Label("FEATURE_ONE") FEATURE_ONE; public boolean isActive() { return FeatureContext.getFeatureManager().isActive(this); } } My Requirement: I need to do like this, if FEATURE_ONE is configured true in yml file, then if condition, else, else has to execute.. if

How to fix 'ClassCastException: cannot assign instance of' - Works local but not in standalone on cluster

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问题 I have a Spring web application(built in maven) with which I connect to my spark cluster(4 workers and 1 master) and to my cassandra cluster(4 nodes). The application starts, the workers communicate with the master and the cassandra cluster is also running. However when I do a PCA(spark mllib) or any other calculation(clustering, pearson, spearman) through the interface of my web-app I get the following error: java.lang.ClassCastException: cannot assign instance of scala.collection.immutable

Spring boot custom starter , application doesn't find required bean

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问题 http://www.baeldung.com/spring-boot-custom-starter I have followed tutorial and github example provided from the link above and have implemented similar way. I am using spring-boot-starter-parent :2.0.0.M3 . Even after including my custom starter dependency in the pom for the app, it doesn't find required bean without @componentScan while deploying it. It is giving following error. APPLICATION FAILED TO START Description: Field fooApiCaller in com.core.controller.TestController required a

Spring Data JPA Custom Repository

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问题 I'm having some issues when trying to implement Custom Repositorys with Spring Data JPA. I try follow some references guides like this but I cant find the problem: https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#repositories.custom-implementations I do not know why Spring tries to look up the custom repository method as my entity property. spring-boot-starter-data-jpa => 1.5.11.RELEASE Entity: public class MyEntity { private Integer id private String name; // Getter