SpringMVC基础(三)整合SSM
首先先建一个数据库
CREATE DATABASE `ssmbuild`;
USE `ssmbuild`;
DROP TABLE IF EXISTS `books`;
CREATE TABLE `books`(
`bookId` INT(10) NOT NULL AUTO_INCREMENT,
`bookName` VARCHAR(100) NOT NULL,
`bookCounts` INT(11) NOT NULL,
`detail` VARCHAR(200) NOT NULL,
KEY `bookId` (`bookId`)
) ENGINE=INNODB DEFAULT CHARSET=utf8
INSERT INTO `books`(`bookId`, `bookName`, `bookCounts`, `detail`) VALUES
(1, "Java", 1, "从入门到放弃"),
(2, "MySql", 10, "从删库到跑路"),
(3, "Linux", 5, "从进门到进牢");
导包
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
</dependencies>
扫描静态资源
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
配置文件
配置文件有:
-
Spring的(用来总和的一些配置文件,将这些配置文件关联起来实现跨xml获取spring组件)resource
- applicationContext.xml (spring总的)
- spring-dao.xml (dao层)
-
Mybatis的(用来说明用了mybatis,因为spring可以直接替代mybatis,作用:起别名、映射mapper)resource
- mybatis-config.xml (dao层)
-
数据库连接信息(properties)resource
- jdbc.properties (dao层)
-
将service层的对象注入到spring容器中(用来扫描service层的包)resource
- spring-service.xml (service层)
- aop用在service层
-
SpringMVC的(用来配置处理器、视图解析器等)resource
- springmvc-servlet.xml (controller层)
-
web的(将spring容器中mvc部分的handler放到servlet容器中,注册一个DispatcherServlet)WEB-INF
- web.xml (controller层)
- Spring的配置文件applicationContext(用来总和的一个配置文件)
<?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:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<import resource="classpath:spring-dao.xml"/>
<import resource="classpath:spring-service.xml"/>
</beans>
- spring在dao层的配置文件spring-dao(拥有mybatis连接信息)
这里与之前配置中的不同之处在于:(整合与非整合的不同处)
- 这里使用的c3p0数据源
- 使用数据库配置文件表示数据库信息
- 使用了mapper自动扫描!(这样就不用写mapper的实现类就可以将mapper注入到spring容器中)在原来是使用了一个sqlSessionTempleton来生成一个sqlSession对象注入到spring容器中,通过实现mapper接口并使用sqlSession对象,将mapper注入到spring容器中!现在不用写maper实现类就可以自动扫描注入到spring容器中 使用的是反射!
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd">
<!--关联数据库配置文件,关联之后你下边才能直接使用-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 创建一个spring的数据源对象 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!--c3p0的一些私有属性-->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!--关闭连接后不自动commut-->
<property name="autoCommitOnClose" value="false"/>
<!--获取连接超时使时间-->
<property name="checkoutTimeout" value="10000"/>
<!--当获取连接失败重试次数-->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!-- 根据数据源创建一个sqlSessionFactory对象 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!-- 以下属性不是必须的,绑定mybatis的配置文件,这样这个sqlSessionFactory就可以根据mybatis的配置文件的一些信息生成 -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!--
配置mapper接口扫描包,动态的实现了mapper接口可以注入到spring容器中。
其内置本质还是用了反射。
这样就不用手动写mapperImpl就可以直接俄注入到spring容器中
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--这个属性是一个String类型的,在扫描时将sqlSessionFactory放到扫描类中,实现反射mapper注入spring容器中-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--扫描要扫描的mapper包-->
<property name="basePackage" value="com.qiu.mapper"/>
</bean>
</beans>
- Mybatis的配置文件mybatis-config
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<package name="com.qiu.pojo"/>
</typeAliases>
<mappers>
<mapper class="com.qiu.mapper.BookMapper"/>
</mappers>
</configuration>
- service配置文件service-service.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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd">
<!--扫描service下的包,将其对象注入到spring容器中-->
<!--需要service的类写上@Service注解-->
<context:component-scan base-package="com.qiu.service"/>
<!--将不写注解的service类手动注入到spring容器中-->
<!--<bean id="bookService" class="com.qiu.service.BookServiceImpl">-->
<!--<property name="bookMapper" ref="bookMapper"/>-->
<!--</bean>-->
<!--声明式事务配置-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
<!--使用事务:使用aop事务支持-->
</beans>
- SpringMVC的配置文件springmvc-servlet(用来配置处理器、视图解析器等)
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 自动扫描包,使得包中的注解生效 -->
<context:component-scan base-package="com.qiu.controller"/>
<!-- 使SpringMVC不处理静态资源,例如:.css .js .html .mp3。过滤这些资源,也就是使用url访问这些资源的时候不会被DispatcherServlet捕获 -->
<mvc:default-servlet-handler/>
<!-- 原来需要配置处理映射器、适配器,现在只需要一个注解驱动即可;写上这个spring就会自动帮我们开启两个器,并且自动注入到spring容器中 -->
<mvc:annotation-driven/>
<!--视图解析器:DispatcherServlet给他的ModelAndView-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="InternalResourceViewResolver">
<!--前缀-->
<property name="prefix" value="/WEB-INF/"/>
<!--后缀-->
<property name="suffix" value=".jsp"/>
</bean>
</beans>
- web的配置文件web(将spring容器中mvc部分的handler放到servlet容器中)
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<!--1.注册DispatcherServlet-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--关联一个springmvc的配置文件:【servlet-name】-servlet.xml-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<!--启动级别-1-->
<load-on-startup>1</load-on-startup>
</servlet>
<!--/ 匹配所有的请求;(不包括.jsp)-->
<!--/* 匹配所有的请求;(包括.jsp)-->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--乱码过滤-->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--session配置-->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>
- 数据库连接信息jdbc.properties
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?characterEncoding=utf-8&useSSL=false&serverTimezone=UTC&rewriteBatchedStatements=true
jdbc.username=root
jdbc.password=111111
com.qiu.mapper
BookMapper.java:
public interface BookMapper {
int addBook(Books books);
int deleteBookById(@Param("bookId") int id);
int updateBook(Books books);
Books queryBookById(@Param("bookId") int id);
List<Books> queryAllBook();
}
BookMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org/DTD Mapper 3.0"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.qiu.mapper.BookMapper">
<insert id="addBook" parameterType="Books">
insert into ssmbuild.books (bookName, bookCounts, detail)
values (#{bookName}, #{bookCounts}, #{detail});
</insert>
<delete id="deleteBookById" parameterType="int">
delete from ssmbuild.books where id = #{bookId};
</delete>
<update id="updateBook" parameterType="Books">
update ssmbuild.books set
bookName=#{bookName}, bookCounts=#{bookCount}, detail=#{detail}
where bookId=#{bookId};
</update>
<select id="queryBookById" parameterType="int" resultType="Books">
select * from ssmbuild.books where bookId=#{bookId};
</select>
<select id="queryAllBook" resultType="Books">
select * from ssmbuild.books;
</select>
</mapper>
需要对mapper接口进行一个Impl才能注入到spring容器中,因为接口没法实例化!
com.qiu.pojo
public class Books {
private Integer bookId;
private String bookName;
private Integer bookCount;
private String detail;
public Books(){
}
public Books(Integer bookId, String bookName, Integer bookCount, String detail) {
this.bookId = bookId;
this.bookName = bookName;
this.bookCount = bookCount;
this.detail = detail;
}
public Integer getBookId() {
return bookId;
}
public void setBookId(Integer bookId) {
this.bookId = bookId;
}
public String getBookName() {
return bookName;
}
public void setBookName(String bookName) {
this.bookName = bookName;
}
public Integer getBookCount() {
return bookCount;
}
public void setBookCount(Integer bookCount) {
this.bookCount = bookCount;
}
public String getDetail() {
return detail;
}
public void setDetail(String detail) {
this.detail = detail;
}
}
com.qiu.service
BookService
public interface BookService {
int addBook(Books books);
int deleteBookById(int id);
int updateBook(Books books);
Books queryBookById(int id);
List<Books> queryAllBook();
}
因为在使用spring时,spring容器托管mapper对象需要mapper的实现类(也就是说mapper的实现类已经使用了sqlsession对mapper接口进行了实现操作,这样才能实例化、spring容器才能托管)所以service层直接注入mapper进行操作即可(你也可以把那个实例化的mapper看成小service)
@Service
public class BookServiceImpl implements BookService {
private BookMapper bookMapper;
public BookServiceImpl(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
public int addBook(Books books) {
return bookMapper.addBook(books);
}
public int deleteBookById(int id) {
return bookMapper.deleteBookById(id);
}
public int updateBook(Books books) {
return bookMapper.updateBook(books);
}
public Books queryBookById(int id) {
return bookMapper.queryBookById(id);
}
public List<Books> queryAllBook() {
return bookMapper.queryAllBook();
}
}
com.qiu.controller
@Controller
@RequestMapping("/book")
public class BookController {
@Autowired
@Qualifier("bookServiceImpl") //这里使用的是service扫描包自动将service类注入到spring容器中,所以对象就是类名首字母小写
private BookService bookService;
// 业务1:查询所有书籍,并且返回到一个书籍页面
@RequestMapping("/allBook")
public String queryList(Model model){
List<Books> list = bookService.queryAllBook();
model.addAttribute("allBooks", list);
return "allBook";
}
}
一个报错
这是因为:你的controller层找不到service、dao的bean,因为你的web.xml中的Dispatcher中只配置了spring-mvc.xml中的bean,所以你servlet容器中找不到service、dao的bean
错误原因:(web.xml)
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
解决方法:将相关xml导入到applicationContext.xml中然后倒进Dispatcher中
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:appplicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
错误样例:
HTTP状态 500 - 内部服务器错误
类型 异常报告
消息 Servlet[springmvc]的Servlet.init()引发异常
描述 服务器遇到一个意外的情况,阻止它完成请求。
例外情况
javax.servlet.ServletException: Servlet[springmvc]的Servlet.init()引发异常
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:543)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:615)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1626)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:834)
根本原因。
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'bookController': Unsatisfied dependency expressed through field 'bookService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.qiu.service.BookService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true), @org.springframework.beans.factory.annotation.Qualifier(value="bookServiceImpl")}
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:596)
org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90)
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:374)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1411)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:845)
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:701)
org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:667)
org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:715)
org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:590)
org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:529)
org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:169)
javax.servlet.GenericServlet.init(GenericServlet.java:158)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:543)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:615)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1626)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:834)
根本原因。
org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.qiu.service.BookService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true), @org.springframework.beans.factory.annotation.Qualifier(value="bookServiceImpl")}
org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1658)
org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1217)
org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1171)
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:593)
org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90)
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:374)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1411)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:845)
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:701)
org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:667)
org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:715)
org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:590)
org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:529)
org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:169)
javax.servlet.GenericServlet.init(GenericServlet.java:158)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:543)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:615)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1626)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:834)
):注意 主要问题的全部 stack 信息可以在 server logs 里查看