org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'homeController': Unsatisfied dependency expressed through field 'homeService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'homeServiceImpl': Unsatisfied dependency expressed through field 'productCategoryDao'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'productCategoryDao' defined in file [F:\WorkSpace\lzwmall\poral\target\classes\com\java\lzw\poral\dao\ProductCategoryDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.Long
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:596)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:374)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1395)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
    at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$144/832432849.getObject(Unknown Source)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:849)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
    at com.java.lzw.poral.PoralApplication.main(PoralApplication.java:16)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'homeServiceImpl': Unsatisfied dependency expressed through field 'productCategoryDao'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'productCategoryDao' defined in file [F:\WorkSpace\lzwmall\poral\target\classes\com\java\lzw\poral\dao\ProductCategoryDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.Long
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:596)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:374)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1395)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
    at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$144/832432849.getObject(Unknown Source)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1247)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1167)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:593)
    ... 20 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'productCategoryDao' defined in file [F:\WorkSpace\lzwmall\poral\target\classes\com\java\lzw\poral\dao\ProductCategoryDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.Long
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1499)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1379)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
    at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$144/832432849.getObject(Unknown Source)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1247)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1167)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:593)
    ... 34 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.Long
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:627)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:607)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1305)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1144)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
    at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$144/832432849.getObject(Unknown Source)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1247)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1167)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1484)
    ... 46 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.Long
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622)
    ... 60 common frames omitted
Caused by: org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.Long
    at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:523)
    at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:380)
    at org.mybatis.spring.SqlSessionFactoryBean.getObject(SqlSessionFactoryBean.java:547)
    at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration.sqlSessionFactory(MybatisAutoConfiguration.java:153)
    at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$43e21078.CGLIB$sqlSessionFactory$0(<generated>)
    at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$43e21078$$FastClassBySpringCGLIB$$21b7309a.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363)
    at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$43e21078.sqlSessionFactory(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
    ... 61 common frames omitted
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [F:\WorkSpace\lzwmall\poral\target\classes\mapper\ProductCategoryDao.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.Long
    at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120)
    at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92)
    at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:521)
    ... 74 common frames omitted
Caused by: org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.Long
    at org.apache.ibatis.builder.BaseBuilder.resolveJdbcType(BaseBuilder.java:73)
    at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildResultMappingFromContext(XMLMapperBuilder.java:382)
    at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:280)
    at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:252)
    at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElements(XMLMapperBuilder.java:244)
    at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:116)
    ... 76 common frames omitted
Caused by: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType.Long
    at java.lang.Enum.valueOf(Enum.java:238)
    at org.apache.ibatis.type.JdbcType.valueOf(JdbcType.java:25)
    at org.apache.ibatis.builder.BaseBuilder.resolveJdbcType(BaseBuilder.java:71)
    ... 81 common frames omitted

Disconnected from the target VM, address: '127.0.0.1:63380', transport: 'socket'

Process finished with exit code 1

出现这种错大多是xml出现异常，可以看看类型，路径是否一致

我出的错是

数据库的一个字段类型是bigint，实体类用Long类型接收，xml里面也用的是Long类型，所以报错，把xml中的字段类型改为BIGINT就ok了

Springboot项目启动报org.springframework.beans.factory.UnsatisfiedDependencyException的更多相关文章

  1. springboot继承JpaRepository报org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualif

    在SpringBoot项目中使用JPA时总是报注入失败,不能创建继承JpaRepository的类的问题,然后尝试给继承JpaRepository的写个实现类,不出现注入失败的情况,但是过一段时间后继 ...

  2. 启动项目报错：org.springframework.beans.factory.UnsatisfiedDependencyException

    dubbo项目: 启动项目报错:(web端) org.springframework.beans.factory.UnsatisfiedDependencyException: Error creat ...

  3. MyBatis Plus + Activiti 整合报错：org.springframework.beans.factory.UnsatisfiedDependencyException

    org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'ind ...

  4. springsecurity启动出现org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: You must use a 3.0 schema with Spring Security 3.0.

    在换了spring-security的jar包以后启动出现org.springframework.beans.factory.parsing.BeanDefinitionParsingExceptio ...

  5. SSM整合报错org.springframework.beans.factory.UnsatisfiedDependencyException

    我解决的办法是把.m2仓库所有文件删除,重新maven project就可以了. 但是在做这一步之前,报错如下: ①org.springframework.beans.factory.Unsatisf ...

  6. 【spring boot】使用注解@ConfigurationProperties读取配置文件时候 报错 org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'rocketmqAutoConfiguration': Unsatisfied dependenc

    如题,配置文件如下: #注册中心配置 eureka: instance: instanceId: ${spring.application.name}:${random.int} hostname: ...

  7. Springboot异常:org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userController'

    今天本菜鸟编写程序时,遇到了一个异常. org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating ...

  8. springboot项目启动报错Failed to configure a DataSource: 'url' attribute is not specified and no embedde

    springboot项目启动报错Failed to configure a DataSource: 'url' attribute is not specified and no embedde 创建 ...

  9. org.springframework.beans.factory.UnsatisfiedDependencyException

    © 版权声明:本文为博主原创文章,转载请注明出处 1.问题描述: 搭建SSH框架,启动时报错如下: 严重: Context initialization failed org.springframew ...

随机推荐

  1. Loaded plugins: fastestmirror, refresh-packagekit, security

    问题描述 最近在用Centos 6.7的时候出现了这种情况 Loaded plugins: fastestmirror, refresh-packagekit, security Loading mi ...

  2. vue报错：Component template should contain exactly one root element. If you are using v-if on multiple elements, use v-else-if to chain them instead.

    在.vue文件中引入了 element-ui 的 table 和 pagination 组件后,报错:Component template should contain exactly one roo ...

  3. java多线程上篇（三） -- 进程通信和线程死锁简单介绍

    进程通信指的是进程间的信息交换 ,IPC(Inter-Process Communication,进程间通信) 进程通信就相当于一种工作方式.沟通形式,进程通信主要指的就是操作系统提供的进程通信工具( ...

  4. python--接口自动化测试（接口状态）

    本节开始,开始介绍python的接口自动化测试,首先需要搭建python开发环境,到https://www.python.org/下载python 版本直接安装就以了,建议 下载python2.7.1 ...

  5. 图像人脸检测+人眼检测 (opencv + c++)

    摘要:实现图像中人脸检测,和人眼定位.输出检测标记图像和定位坐标. 工具:vs2015 opencv3  C++ 资源:haarcascade_frontalface_alt2.xml;haarcas ...

  6. 使用DANT做FTP的转发代理

    FTP不能直接使用nginx进行转发,想了一些办法,最后决定使用iptalbes做DNAT,相关于把这个机器做一台防火墙,做一个NAT 1.启用ip_forward vim /etc/sysctl.c ...

  7. lambda select和where区别

    本文用一个linq to xml语法作为示例,以下是用来操作的xml:<?xml version="1.0" encoding="utf-8" stand ...

  8. VBA决策（十）

    决策允许程序员控制脚本或其中一个部分的执行流程.执行由一个或多个条件语句控制.以下是在大多数编程语言中找到的典型决策结构的一般形式. VBA提供了以下类型的决策声明. 点击以下链接来查看它们的详细信息 ...

  9. jdk8的环境配置

    下载jdk,选择安装路径进行安装.https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.htm ...

  10. react请求接口数据是在componentDidMount 还是componentWillMount周期好

    如果你要获取外部数据并加载到组件上,只能在组件"已经"挂载到真实的网页上才能作这事情,其它情况你是加载不到组件的.componentDidMount方法中的代码,是在组件已经完全挂 ...