一个错误会浪费好多青春绳命

鉴于此，为了不让大家也走弯路，分享解决方案。

【错误代码提示】

StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userHandler': Injection of resource dependencies failed;

【完整错误代码】

StandardWrapper.Throwable

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userHandler': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userServiceImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userMapper' defined in file [D:\tomcat\webapps\ktyh\WEB-INF\classes\com\hyh\mapper\UserMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.NullPointerException

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:306)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)

    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)

    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)

    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)

    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631)

    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588)

    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645)

    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508)

    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449)

    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133)

    at javax.servlet.GenericServlet.init(GenericServlet.java:158)

    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1282)

    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1195)

    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1085)

    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5318)

    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5610)

    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)

    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)

    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)

    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1259)

    at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1998)

    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

    at java.util.concurrent.FutureTask.run(FutureTask.java:262)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

    at java.lang.Thread.run(Thread.java:745)

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userServiceImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userMapper' defined in file [D:\tomcat\webapps\ktyh\WEB-INF\classes\com\hyh\mapper\UserMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.NullPointerException

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:306)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:442)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:416)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:549)

    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:150)

    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)

    ... 33 more

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userMapper' defined in file [D:\tomcat\webapps\ktyh\WEB-INF\classes\com\hyh\mapper\UserMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.NullPointerException

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:442)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:416)

    at org.springframework.context.annotation.CommonAnnotationBeanPostPro

cessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:549)

    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:150)

    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)

    ... 46 more

Caused by: java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.NullPointerException

    at org.mybatis.spring.mapper.MapperFactoryBean.checkDaoConfig(MapperFactoryBean.java:100)

    at org.springframework.dao.support.DaoSupport.afterPropertiesSet(DaoSupport.java:44)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)

    ... 58 more

Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.NullPointerException

    at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120)

    at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92)

    at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.loadXmlResource(MapperAnnotationBuilder.java:166)

    at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.parse(MapperAnnotationBuilder.java:118)

    at org.apache.ibatis.binding.MapperRegistry.addMapper(MapperRegistry.java:71)

    at org.apache.ibatis.session.Configuration.addMapper(Configuration.java:651)

    at org.mybatis.spring.mapper.MapperFactoryBean.checkDaoConfig(MapperFactoryBean.java:97)

    ... 61 more

Caused by: java.lang.NullPointerException

    at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:109)

    ... 67 more

六月 01, 2016 10:18:32 上午 org.apache.catalina.core.StandardContext loadOnStartup

严重: Servlet [springmvc] in web application [/ktyh] threw load() exception

java.lang.NullPointerException

    at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:109)

    at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92)

    at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.loadXmlResource(MapperAnnotationBuilder.java:166)

    at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.parse(MapperAnnotationBuilder.java:118)

    at org.apache.ibatis.binding.MapperRegistry.addMapper(MapperRegistry.java:71)

    at org.apache.ibatis.session.Configuration.addMapper(Configuration.java:651)

    at org.mybatis.spring.mapper.MapperFactoryBean.checkDaoConfig(MapperFactoryBean.java:97)

    at org.springframework.dao.support.DaoSupport.afterPropertiesSet(DaoSupport.java:44)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:442)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:416)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:549)

    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:150)

    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:442)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:416)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:549)

    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:150)

    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)

    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)

    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)

    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)

    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)

    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631)

    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588)

    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645)

    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508)

    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449)

    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133)

    at javax.servlet.GenericServlet.init(GenericServlet.java:158)

    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1282)

    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1195)

    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1085)

    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5318)

    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5610)

    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)

    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)

    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)

    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1259)

    at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1998)

    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

    at java.util.concurrent.FutureTask.run(FutureTask.java:262)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

    at java.lang.Thread.run(Thread.java:745)

【出现错误的背景】

在使用Spring+SpringMVC+Mybatis SSM集成框架时，服务器启动就会报错。

【错误根源】

XML配置错误。

【解决方案】

第一步、查找springmvc.xml 配置文件中 是否添加了扫描注解的范围。

<!-- 开启扫描注解 -->

    <context:component-scan base-package=""></context:component-scan>

（重要）base-package中要添加扫描注解范围。

<!-- 开启扫描注解 -->

    <context:component-scan base-package="com.hyh.action,com.hyh.service.impl"></context:component-scan>

如果上一步没问题的话，看下面

第二步、检查mapper包中的xml。

<mapper >

    <!-- 完成用户的账户信息验证 -->

    <select id="userLogin" parameterType="com.hyh.entity.User"

        resultType="com.hyh.entity.User">

        select * from userInfo where phone=#{phone} and accoundpwd=#{accountpwd}

    </select>

</mapper>

（重要）mapper 标签中，一定要写namespace。

如下：

<mapper namespace="com.hyh.mapper.UserMapper">

    <!-- 完成用户的账户信息验证 -->

    <select id="userLogin" parameterType="com.hyh.entity.User"

        resultType="com.hyh.entity.User">

        select * from userInfo where phone=#{phone} and accoundpwd=#{accountpwd}

    </select>

</mapper>

一般出现这些问题，无非是粗心、粗心、还是粗心。

另外一定要记住：有些关键字，能复制就复制，打字容易错。

（如果能解决，请点个赞！）

【解决方案】 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userHandler': Injection of resource dependencies failed;的更多相关文章

  1. org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'supplierAction': Injection of resource dependencies failed; nested exception is org.springframework.beans.factor

    这个错误是因为抽象Action类的时候,把ServletContext写成了serverContext,导致无法注入,正确写法是 import javax.annotation.Resource; i ...

  2. Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fundService': Injection of resource dependencies failed;

    在进行SSM的Controller的编写, 从浏览器访问后端Controller的时候遇到了这个问题. 这个问题的描述: 创建Bean的对象失败 错误代码如下: @Service("fund ...

  3. Error creating bean with name 'testController': Injection of resource dependencies failed;

    启动ssm项目报错: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 't ...

  4. Java报错：Error creating bean with name 'testController': Injection of resource dependencies failed

    报错如下: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testCo ...

  5. org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'catchFromPBomService': Cannot create inner bean '(inner bean)#302efb82' of type [com.thinkgem.jeesite.modules.fd

    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'catchFromPBo ...

  6. ssh整合报错严重: Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'xxx'

    错误描述:eclipse整合ssh的时候 报不能创建名字为xxx的对象 信息: Destroying singletons in org.springframework.beans.factory.s ...

  7. aused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Invocation of init method fai

    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleDaoImpl' ...

  8. 严重: StandardWrapper.Throwable org.springframework.beans.factory.BeanCreationException: Error creating bean with name

    HTTP Status 500 - Servlet.init() for servlet mybatis threw exception type Exception report message S ...

  9. org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.mybatis.spring.mapper.MapperScannerConfigurer#0'

    七月 05, 2018 10:26:54 上午 org.apache.tomcat.util.digester.SetPropertiesRule begin警告: [SetPropertiesRul ...

随机推荐

  1. C语言 · 矩阵乘法 · 算法训练

    问题描述 输入两个矩阵,分别是m*s,s*n大小.输出两个矩阵相乘的结果. 输入格式 第一行,空格隔开的三个正整数m,s,n(均不超过200). 接下来m行,每行s个空格隔开的整数,表示矩阵A(i,j ...

  2. nodejs之get/post请求的几种方式

    最近一段时间在学习前端向服务器发送数据和请求数据,下面总结了一下向服务器发送请求用get和post的几种不同请求方式: 1.用form表单的方法:(1)get方法 前端代码: <form act ...

  3. 通过重建Hosting系统理解HTTP请求在ASP.NET Core管道中的处理流程[下]：管道是如何构建起来的？

    在<中篇>中,我们对管道的构成以及它对请求的处理流程进行了详细介绍,接下来我们需要了解的是这样一个管道是如何被构建起来的.总的来说,管道由一个服务器和一个HttpApplication构成 ...

  4. 【开源】.Net 分布式服务中心

    分布式服务中心 开源地址: http://git.oschina.net/chejiangyi/Dyd.BaseService.ServiceCenter 当垂直应用越来越多,应用之间交互不可避免,将 ...

  5. CRL快速开发框架系列教程十二(MongoDB支持)

    本系列目录 CRL快速开发框架系列教程一(Code First数据表不需再关心) CRL快速开发框架系列教程二(基于Lambda表达式查询) CRL快速开发框架系列教程三(更新数据) CRL快速开发框 ...

  6. 讓TQ2440也用上設備樹（1）

    作者:彭東林 郵箱:pengdonglin137@163.com QQ:405728433 開發板 TQ2440 + 64MB 內存 + 256MB Nand 軟件 Linux: Linux-4.9 ...

  7. 【iOS】Xcode8+Swift3 纯代码模式实现 UICollectionView

    开发环境 macOS Sierra 10.12.Xcode 8.0,如下图所示: 总体思路 1.建立空白的storyboard用于呈现列表 2.实现自定义单个单元格(继承自:UICollectionV ...

  8. VICA 架构设计（1）

    本文记录最近完成的一个通用实时通信客户端的架构.   背景 我们公司是做税务相关的软件,有针对大客户 MIS 系统,也有针对中小客户的 SaaS 平台.这些系统虽然都是 B/S 的,但是也需要使用 A ...

  9. WPF 普通属性变化通知

    问题描述:使用ObservableCollection<OrderItem> source 给Datagrid.ItemsSource赋值,在后台更新source集合后,前台Datagri ...

  10. git远程库GitHub

    首先,注册一个GitHub(github.com)帐号,免费获得Git远程仓库 由于本地Git仓库和GitHub仓库之间的传输是通过SSH加密的,所以,需要一点设置: 第1步:创建SSH Key.在用 ...