No visible constructors in class

下面的错误是我构造一个工厂类时候报的错误，百度了一圈发现网上也有类似的错误都是构造工厂类时候报出，但是错误不相同，最后还是静下心来看看报错的错误，从上往下看，一不小心看到如下错误：
Caused by: java.lang.IllegalArgumentException: No visible constructors in class com.liulangtao.frame.demo.config.elasticSearch.ElasticSesrchClientFactory**
翻译过来就是java.lang.IllegalArgumentException引起错误，没有ElasticSesrchClientFactory的构造函数。这样小编瞬间就理解了果断将ElasticSesrchClientFactory的构造函数的private修改为public ，重启服务瞬间好了。
**

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-01-22 11:38:22.267 ERROR 3404 --- [           main] o.s.boot.SpringApplication               : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'elasticSesrchClientFactory' defined in file [D:\微服务系统架构\frame\target\classes\com\liulangtao\frame\demo\config\elasticSearch\ElasticSesrchClientFactory.class]: Initialization of bean failed; nested exception is org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class com.liulangtao.frame.demo.config.elasticSearch.ElasticSesrchClientFactory: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: No visible constructors in class com.liulangtao.frame.demo.config.elasticSearch.ElasticSesrchClientFactoryat org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:581) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:762) [spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:398) [spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]at org.springframework.boot.SpringApplication.run(SpringApplication.java:330) [spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]at org.springframework.boot.SpringApplication.run(SpringApplication.java:1258) [spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]at org.springframework.boot.SpringApplication.run(SpringApplication.java:1246) [spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]at com.liulangtao.frame.demo.FrameApplication.main(FrameApplication.java:23) [classes/:na]
Caused by: org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class com.liulangtao.frame.demo.config.elasticSearch.ElasticSesrchClientFactory: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: No visible constructors in class com.liulangtao.frame.demo.config.elasticSearch.ElasticSesrchClientFactoryat org.springframework.aop.framework.CglibAopProxy.getProxy(CglibAopProxy.java:208) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:110) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.createProxy(AbstractAutoProxyCreator.java:473) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:355) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:304) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:431) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1703) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:573) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]... 15 common frames omitted
**Caused by: java.lang.IllegalArgumentException: No visible constructors in class** com.liulangtao.frame.demo.config.elasticSearch.ElasticSesrchClientFactoryat org.springframework.cglib.proxy.Enhancer.filterConstructors(Enhancer.java:666) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.proxy.Enhancer.generateClass(Enhancer.java:567) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.transform.TransformingClassGenerator.generateClass(TransformingClassGenerator.java:33) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.aop.framework.CglibAopProxy$ClassLoaderAwareUndeclaredThrowableStrategy.generate(CglibAopProxy.java:1000) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:329) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.proxy.Enhancer.generate(Enhancer.java:492) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:93) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:91) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266) ~[na:1.8.0_72]at java.util.concurrent.FutureTask.run(FutureTask.java) ~[na:1.8.0_72]at org.springframework.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.core.internal.LoadingCache.get(LoadingCache.java:34) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:116) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:291) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.proxy.Enhancer.createHelper(Enhancer.java:480) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.cglib.proxy.Enhancer.createClass(Enhancer.java:337) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.aop.framework.ObjenesisCglibAopProxy.createProxyClassAndInstance(ObjenesisCglibAopProxy.java:58) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.RELEASE]at org.springframework.aop.framework.CglibAopProxy.getProxy(CglibAopProxy.java:205) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.RELEASE]... 22 common frames omitted
Disconnected from the target VM, address: '127.0.0.1:58471', transport: 'socket'

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