ssm自动注入失败

BIue eyes° 2020-10-15 07:29:25

项目遇到了ssm自动注入失败的问题，在网上找到的教程基本都试过没用：1.注解问题；2.配置文件问题
会是spring jar包的问题吗？还是有其他原因我不了解的呢？正在学习，求高手解答！！
报IUserService注入失败错误：

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [cn.edu.sdust.service.IUserService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373)

	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119)

	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014)

	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)

	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)

	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)

	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)

	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)

	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)

	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)

	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)

	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)

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

	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)

	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)

	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)

	at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:666)

	at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:632)

	at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:680)

	at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:551)

	at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:492)

	at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)

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

	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1134)

	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1089)

	at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:761)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)

	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)

	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)

	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)

	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)

	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589)

	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	at java.lang.Thread.run(Thread.java:748)

hellocontorller.java:



@Controller

@RequestMapping("/user")

public class HelloController {

	@Autowired

	IUserService userservice;

	

	@RequestMapping(method=RequestMethod.POST)

	public String checkUserByPassword(HttpServletRequest request, @RequestParam("username")String username, @RequestParam("password")String password) {

		.....

	}

}

IUserService.java:



@Service("IUserService")

public class UserServiceImpl implements IUserService{

	@Autowired

	IUserDao iuserdao;

	

	@Override

	public int checkUserByPassword(String username, String password) {

		return iuserdao.checkUserByPassword(username, password);

	}

}

spring-mybatis.xml:

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"

    xmlns:context="http://www.springframework.org/schema/context"

    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"

    xmlns:mvc="http://www.springframework.org/schema/mvc"

    xsi:schemaLocation="http://www.springframework.org/schema/beans

    http://www.springframework.org/schema/beans/spring-beans-4.3.xsd

    http://www.springframework.org/schema/context

    http://www.springframework.org/schema/context/spring-context-4.3.xsd

    http://www.springframework.org/schema/aop

    http://www.springframework.org/schema/aop/spring-aop-4.3.xsd

    http://www.springframework.org/schema/tx

    http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    

    <!-- ========================================配置数据源dao========================================= -->

	<context:property-placeholder location="classpath:data.properties"/>

	<!--扫描service，自动注入-->

	<context:component-scan base-package="cn.edu.sdust.service" />

	

	<!-- 配置c3p0，开源数据库连接池，通过读取配置文件创建数据源对象。 -->

    <bean id="basicDataSource" class="org.apache.commons.dbcp.BasicDataSource"

        destroy-method="close" p:driverClassName="com.mysql.jdbc.Driver"

        p:url="jdbc:mysql://localhost:3306/uertable?charactsetEncoding=utf-8"

        p:username="root" p:password="root" p:maxActive="10" p:maxIdle="10">       

    </bean>  

    

    <!-- ========================================针对myBatis的配置项============================== -->	

    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">

     	<property name="dataSource" ref="basicDataSource"></property> 

     	<property name="configLocation" value="classpath*:mybatis-config.xml"/>

     </bean>

     

	<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">

	    <property name="basePackage" value="cn.edu.sdust.mapper.UserMapper"></property>

		<property name="SqlSessionFactory" ref="SqlSessionFactoryBean"></property>

	</bean>

</beans>