springmvc
<!doctype html>
springmvc
配置文件
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:mvc="http://www.springframework.org/schema/mvc"
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xsi:schemaLocation="http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans.xsd
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context.xsd
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http://www.springframework.org/schema/mvc
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https://www.springframework.org/schema/mvc/spring-mvc.xsd">
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<!-- 扫描指定包下的注解 -->
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<context:component-scan base-package="huluxia.fun.controller"/>
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<!-- 配置注解驱动，它的主要的作用是：注册映射器HandlerMapping和适配器HandlerAdapter 两个类型的Bean -->
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<!--HandlerMapping的实现为实现类RequestMappingHandlerMapping，它会处理 @RequestMapping 注解，并将其注册到请求映射表中-->
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<!--HandlerAdapter的实现为实现类RequestMappingHandlerAdapter，它是处理请求的适配器，确定调用哪个类的哪个方法，并且构造方法参数，返回值 --><!--在使用SpringMVC是一般都会加上该配置 -->
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<mvc:resources mapping="/bootstrap/**" location="/bootstrap/"/>
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<mvc:resources mapping="/bootstrap-datetimepicker-master/**" location="/bootstrap-datetimepicker-master/"/>
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<mvc:resources mapping="/images/**" location="/images/"/>
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<!-- 配置注解驱动-->
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<mvc:annotation-driven/>
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<context:annotation-config />
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<!-- 注册视图解析器 -->
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<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
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<!-- 配置前缀 -->
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<property name="prefix" value="/WEB-INF/pages/"/>
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<!-- 配置后缀 -->
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<property name="suffix" value=".jsp"/>
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</bean>
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</beans>
NoSuchBeanDefinitionException报错解决
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06-Jul-2021 13:40:43.404 信息 [http-nio-8080-exec-6] org.springframework.web.servlet.FrameworkServlet.initServletBean Initializing Servlet 'springmvc'
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06-Jul-2021 13:40:43.499 警告 [http-nio-8080-exec-6] org.springframework.context.support.AbstractApplicationContext.refresh Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'loginController': Unsatisfied dependency expressed through field 'loginService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'huluxia.fun.service.LoginService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
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06-Jul-2021 13:40:43.499 严重 [http-nio-8080-exec-6] org.springframework.web.servlet.FrameworkServlet.initServletBean Context initialization failed
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org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'loginController': Unsatisfied dependency expressed through field 'loginService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'huluxia.fun.service.LoginService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
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at
解决办法
web.xml中加
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<context-param>
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<param-name>contextConfigLocation</param-name>
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<param-value>classpath:applicationContext.xml</param-value>
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</context-param>
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<listener>
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<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
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</listener>
ContextLoaderListener的作用就是启动Web容器时，自动装配ApplicationContext.xml的配置信息。因为它实现了ServletContextListener这个接口，在web.xml配置这个监听器，启动容器时，就会默认执行它实现的方法。
springmvc中web.xml配置
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<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
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version="4.0">
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<!-- 配置加载spring文件的监听器-->
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<context-param>
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<param-name>contextConfigLocation</param-name>
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<param-value>classpath:applicationContext.xml</param-value>
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</context-param>
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<listener>
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<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
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</listener>
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<!-- 编码过滤-->
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<filter>
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<filter-name>encodingFilter</filter-name>
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<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
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<!--支持异步处理-->
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<async-supported>true</async-supported>
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<!-- 配置encoding，告诉指定的编码格式，这里设置为UTF-8 -->
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<init-param>
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<param-name>encoding</param-name>
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<param-value>UTF-8</param-value>
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</init-param>
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<!-- 解决请求乱码 -->
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<init-param>
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<param-name>forceRequestEncoding</param-name>
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<param-value>true</param-value>
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</init-param>
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<!-- 解决响应乱码 -->
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<init-param>
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<param-name>forceResponseEncoding</param-name>
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<param-value>true</param-value>
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</init-param>
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</filter>
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<filter-mapping>
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<filter-name>encodingFilter</filter-name>
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<url-pattern>/*</url-pattern>
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</filter-mapping>
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<!-- 配置SpringMVC核心控制器 -->
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<servlet>
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<!-- 配置前端过滤器-->
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<servlet-name>springmvc</servlet-name>
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<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
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<!-- 配置DispatcherServlet的初始化参数：读取springmvc.xml -->
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<!-- 初始化时加载配置文件-->
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<init-param>
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<param-name>contextConfigLocation</param-name>
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<param-value>classpath:spring-mvc.xml</param-value>
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</init-param>
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<!-- 表示容器在启动时立即加载Servlet -->
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<load-on-startup>1</load-on-startup>
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<!--支持异步处理-->
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<async-supported>true</async-supported>
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</servlet>
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<servlet-mapping>
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<servlet-name>springmvc</servlet-name>
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<!--
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/* 匹配所有资源（永远不要这样写）
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/ 匹配所有请求（推荐）
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*.扩展名 匹配所有请求（推荐），例如*.do
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-->
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<url-pattern>/</url-pattern>
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</servlet-mapping>
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<!-- 系统默认页面-->
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<welcome-file-list>
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<welcome-file>index.jsp</welcome-file>
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</welcome-file-list>
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</web-app>
springmvc-config.xml
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:mvc="http://www.springframework.org/schema/mvc"
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xsi:schemaLocation="http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans.xsd
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context.xsd
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http://www.springframework.org/schema/mvc
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https://www.springframework.org/schema/mvc/spring-mvc.xsd">
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<!-- 扫描指定包下的包 -->
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<context:component-scan base-package="huluxia.fun.controller"/>
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<!-- 配置注解驱动:配置处理器映射器和适配器-->
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<mvc:annotation-driven/>
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<!-- 配置注解驱动，它的主要的作用是：注册映射器HandlerMapping和适配器HandlerAdapter 两个类型的Bean -->
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<!--HandlerMapping的实现为实现类RequestMappingHandlerMapping，它会处理 @RequestMapping 注解，并将其注册到请求映射表中-->
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<!--HandlerAdapter的实现为实现类RequestMappingHandlerAdapter，它是处理请求的适配器，确定调用哪个类的哪个方法，并且构造方法参数，返回值 -->
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<!--在使用SpringMVC是一般都会加上该配置 -->
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<!-- 配置静态资源的访问映射,此配置中的文件,将不被前端控制器拦截-->
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<mvc:resources mapping="/bootstrap/**" location="/bootstrap/"/>
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<mvc:resources mapping="/bootstrap-datetimepicker-master/**" location="/bootstrap-datetimepicker-master/"/>
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<mvc:resources mapping="/images/**" location="/images/"/>
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<!-- 注册视图解析器 -->
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<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
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<!-- 配置前缀 -->
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<property name="prefix" value="/WEB-INF/pages/"/>
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<!-- 配置后缀 -->
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<property name="suffix" value=".jsp"/>
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</bean>
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</beans>
springmvc中ApplicationContext.xml的配置
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:tx="http://www.springframework.org/schema/tx"
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xmlns:aop="http://www.springframework.org/schema/aop"
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xmlns:context="http://www.springframework.org/schema/context"
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xsi:schemaLocation="http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans.xsd
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http://www.springframework.org/schema/tx
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http://www.springframework.org/schema/tx/spring-tx.xsd
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http://www.springframework.org/schema/aop
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http://www.springframework.org/schema/aop/spring-aop.xsd
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context.xsd">
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<!-- 读取db.properties-->
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<context:property-placeholder location="classpath:huluxia/fun/resources/db.properties" ignore-unresolvable="true" />
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<!-- 配置数据源-->
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<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
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<!-- 基本属性 url、user、password -->
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<property name="driverClassName" value="${jdbc.driver}" />
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<property name="url" value="${jdbc.url}" />
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<property name="username" value="${jdbc.username}" />
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<property name="password" value="${jdbc.password}" />
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<!-- 配置监控统计拦截的filters -->
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<property name="filters" value="stat" />
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<!-- 配置初始化大小、最小、最大 -->
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<property name="maxActive" value="20" />
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<property name="initialSize" value="1" />
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<property name="minIdle" value="1" />
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<!-- 配置获取连接等待超时的时间 -->
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<property name="maxWait" value="60000" />
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<!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
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<property name="timeBetweenEvictionRunsMillis" value="60000" />
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<!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
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<property name="minEvictableIdleTimeMillis" value="300000" />
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<property name="testWhileIdle" value="true" />
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<property name="testOnBorrow" value="false" />
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<property name="testOnReturn" value="false" />
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<!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->
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<property name="poolPreparedStatements" value="true" />
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<property name="maxOpenPreparedStatements" value="20" />
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</bean>
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<!-- 事务管理器,依赖于数据源-->
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<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
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<property name="dataSource" ref="dataSource"></property>
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</bean>
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<!-- 开启事务注解-->
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<tx:annotation-driven transaction-manager="transactionManager"/>
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<!-- 配置Mybatis中的sqlSessionFactory，SqlSessionFactoryBean是用来产生sqlSessionFactory的 -->
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<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
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<property name="basePackage" value="huluxia.fun.dao" />
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<!-- 可选，如果不写，Spring启动时候。容器中自动会按照类型去把SqlSessionFactory对象注入进来 -->
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<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
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</bean>
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<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
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<!-- 加载上面配置好数据源 -->
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<property name="dataSource" ref="dataSource" />
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<!-- 加载mybatis的映射配置文件;XxxMapper.xml -->
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<property name="mapperLocations" value="classpath:huluxia/fun/po/*.xml" />
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<!-- 加载mybatis的全局配置文件;mybatis-config.xml-->
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<property name="configLocation" value="classpath:mybatis-config.xml"/>
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<!-- 配置别名，使用包扫描,扫描com.thr.pojo包下的所有实体 -->
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<property name="typeAliasesPackage" value="huluxia.fun.pojo"/>
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</bean>
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<!-- 配置AOP -->
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<!--通知-->
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<tx:advice id="txadvice" transaction-manager="transactionManager">
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<tx:attributes>
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<tx:method name="select*" propagation="REQUIRED"/>
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<tx:method name="insert*" propagation="REQUIRED"/>
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<tx:method name="add*" propagation="REQUIRED"/>
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<tx:method name="create*" propagation="REQUIRED"/>
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<tx:method name="delete*" propagation="REQUIRED"/>
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<tx:method name="update*" propagation="REQUIRED"/>
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<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
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<tx:method name="select*" propagation="SUPPORTS" read-only="true"/>
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<tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
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</tx:attributes>
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</tx:advice>
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<!-- 切面-->
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<aop:config>
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<aop:advisor advice-ref="txadvice"
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pointcut="execution(* huluxia.fun.service.*.*(..))"/>
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</aop:config>
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<!-- 扫描service-->
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<context:component-scan base-package="huluxia.fun.service"/>
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</beans>
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