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org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘customerController’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘customerServiceImpl’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘customerRepo’: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Not a managed type: class tonel.model.CustomersEntity

一、解决，添加 @EntityScan(“tonel.model”) 注解，即可解决

多种方式，可以多个包扫描

@SpringBootApplication@EntityScan(basePackages ={ "tonel.model","tonels.qbe.model"})//@SpringBootApplication(scanBasePackages = {"org.ashu.java.*"})//@EnableJpaRepositories(basePackages ={ "org.ashu.java.*"})//@EntityScan(basePackages ={ "org.ashu.java.*"})public class QbeApp {    public static void main(String[] args) {        ConfigurableApplicationContext run = SpringApplication.run(QbeApp.class);    }}

二、思考，源码

/* * Copyright 2012-2017 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package org.springframework.boot.autoconfigure.domain;import java.lang.annotation.Documented;import java.lang.annotation.ElementType;import java.lang.annotation.Retention;import java.lang.annotation.RetentionPolicy;import java.lang.annotation.Target;import org.springframework.context.annotation.Import;import org.springframework.core.annotation.AliasFor;@Target(ElementType.TYPE)@Retention(RetentionPolicy.RUNTIME)@Documented@Import(EntityScanPackages.Registrar.class)public @interface EntityScan {	/**	 * Alias for the {@link #basePackages()} attribute. Allows for more concise annotation	 * declarations e.g.: {@code @EntityScan("org.my.pkg")} instead of	 * {@code @EntityScan(basePackages="org.my.pkg")}.	 * @return the base packages to scan	 */	@AliasFor("basePackages")	String[] value() default {};	/**	 * Base packages to scan for entities. {@link #value()} is an alias for (and mutually	 * exclusive with) this attribute.	 * 
	 * Use {@link #basePackageClasses()} for a type-safe alternative to String-based	 * package names.	 * @return the base packages to scan	 */	@AliasFor("value")	String[] basePackages() default {};	/**	 * Type-safe alternative to {@link #basePackages()} for specifying the packages to	 * scan for entities. The package of each class specified will be scanned.	 * 
	 * Consider creating a special no-op marker class or interface in each package that	 * serves no purpose other than being referenced by this attribute.	 * @return classes from the base packages to scan	 */	Class
    [] basePackageClasses() default {};}

三、出现场景，我从一个别的Module中引入的common Module的Entity，出现的错误，从当前Module不会出现这个问题。

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