Question

当我尝试将Springboot appliction与MySql连接时，我变得像这样，我对此一无所知

org.springframework.beans.factory.UnsatisfiedDependencyException：创建名称为bean的错误 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration'：通过构造函数参数0表示的不满足的依赖关系；嵌套异常为 org.springframework.beans.factory.BeanCreationException：错误创建在类路径资源中定义的名称为“ dataSource”的bean [org / springframework / boot / autoconfigure / jdbc / DataSourceConfiguration $ Hikari.class]：通过工厂方法实例化Bean失败；嵌套异常为 org.springframework.beans.BeanInstantiationException：失败实例化[com.zaxxer.hikari.HikariDataSource]：工厂方法 'dataSource'引发异常；嵌套异常为 java.lang.IllegalStateException：无法加载驱动程序类： com.mysql.jdbc.Driver 在org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray（ConstructorResolver.java:769）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor（ConstructorResolver.java:218）处〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor（AbstractAutowireCapableBeanFactory.java:1341）处〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance（AbstractAutowireCapableBeanFactory.java:1187）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:555）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:515）上〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.lambda $ doGetBean $ 0（AbstractBeanFactory.java:320）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:222）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:318）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:199）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod（ConstructorResolver.java:392）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod（AbstractAutowireCapableBeanFactory.java:1321）处〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance（AbstractAutowireCapableBeanFactory.java:1160）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:555）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:515）上〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.lambda $ doGetBean $ 0（AbstractBeanFactory.java:320）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:222）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:318）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:199）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.context.support.AbstractApplicationContext.getBean（AbstractApplicationContext.java:1105）〜[spring-context-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:867）〜[spring-context-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:549）〜[spring-context-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh（ServletWebServerApplicationContext.java:140）〜[spring-boot-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在org.springframework.boot.SpringApplication.refresh（SpringApplication.java:742）〜[spring-boot-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在org.springframework.boot.SpringApplication.refreshContext（SpringApplication.java:389）〜[spring-boot-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在org.springframework.boot.SpringApplication.run（SpringApplication.java:311）〜[spring-boot-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在org.springframework.boot.SpringApplication.run（SpringApplication.java:1213）〜[spring-boot-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在org.springframework.boot.SpringApplication.run（SpringApplication.java:1202）〜[spring-boot-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在com.example.demo.DemoApplication.main（DemoApplication.java:10）〜[classes /：na] 引起原因：org.springframework.beans.factory.BeanCreationException：错误创建在类路径资源中定义的名称为“ dataSource”的bean [org / springframework / boot / autoconfigure / jdbc / DataSourceConfiguration $ Hikari.class]：通过工厂方法实例化Bean失败；嵌套异常为 org.springframework.beans.BeanInstantiationException：失败实例化[com.zaxxer.hikari.HikariDataSource]：工厂方法 'dataSource'引发异常；嵌套异常为 java.lang.IllegalStateException：无法加载驱动程序类： com.mysql.jdbc.Driver 在org.springframework.beans.factory.support.ConstructorResolver.instantiate（ConstructorResolver.java:627）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod（ConstructorResolver.java:607）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod（AbstractAutowireCapableBeanFactory.java:1321）处〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance（AbstractAutowireCapableBeanFactory.java:1160）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:555）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:515）上〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.lambda $ doGetBean $ 0（AbstractBeanFactory.java:320）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:222）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:318）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:199）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate（DependencyDescriptor.java:277）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency（DefaultListableBeanFactory.java:1251）处〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency（DefaultListableBeanFactory.java:1171）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument（ConstructorResolver.java:857）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray（ConstructorResolver.java:760）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] ...省略28个通用框架原因：org.springframework.beans.BeanInstantiationException：无法实例化[com.zaxxer.hikari.HikariDataSource]：工厂方法“ dataSource”抛出异常；嵌套异常为 java.lang.IllegalStateException：无法加载驱动程序类： com.mysql.jdbc.Driver 在org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate（SimpleInstantiationStrategy.java:185）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.beans.factory.support.ConstructorResolver.instantiate（ConstructorResolver.java:622）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] ...省略了42个通用框架引起原因：java.lang.IllegalStateException：无法加载驱动程序类：com.mysql.jdbc.Driver 在org.springframework.util.Assert.state（Assert.java:94）〜[spring-core-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.determineDriverClassName（DataSourceProperties.java:222）〜[spring-boot-autoconfigure-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.initializeDataSourceBuilder（DataSourceProperties.java:174）〜[spring-boot-autoconfigure-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration.createDataSource（DataSourceConfiguration.java:43）〜[spring-boot-autoconfigure-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration $ Hikari.dataSource（DataSourceConfiguration.java:85）〜[spring-boot-autoconfigure-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration $ Hikari $$ EnhancerBySpringCGLIB $$ 12ce4fa3.CGLIB $ dataSource $ 0（）〜[spring-boot-autoconfigure-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration $ Hikari $$ EnhancerBySpringCGLIB $$ 12ce4fa3 $$ FastClassBySpringCGLIB $$ 4638b298.invoke（）〜[spring-boot-autoconfigure-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在org.springframework.cglib.proxy.MethodProxy.invokeSuper（MethodProxy.java:244）〜[spring-core-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.context.annotation.ConfigurationClassEnhancer $ BeanMethodInterceptor.intercept（ConfigurationClassEnhancer.java:363）处〜[spring-context-5.1.8.RELEASE.jar：5.1.8.RELEASE] 在org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration $ Hikari $$ EnhancerBySpringCGLIB $$ 12ce4fa3.dataSource（）〜[spring-boot-autoconfigure-2.1.6.RELEASE.jar：2.1.6.RELEASE] 在java.base / jdk.internal.reflect.NativeMethodAccessorImpl.invoke0（本机方法）〜[na：na] 在java.base / jdk.internal.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）〜[na：na] 在java.base / jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）〜[na：na] 在java.base / java.lang.reflect.Method.invoke（Method.java:567）〜[na：na] 在org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate（SimpleInstantiationStrategy.java:154）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] ...省略了43个共同的框架

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spring boot应用程序类

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args); 
        System.out.println("Application Started");
    }

}

控制器

package com.example.demo.controllers;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.example.demo.DaoImpl.UserDaoImpl;
import com.example.demo.dto.UserDTO;

@Controller
public class HomeController {  

    @Autowired
    UserDaoImpl udi;

    @RequestMapping("home")
    public ModelAndView home() { 

        ModelAndView mv = new ModelAndView("home");
        System.out.println("function is runnning");

        UserDTO ud = new UserDTO();
        ud.setEmail("abcd@gmail.com"); 
        ud.setName("abce");

        udi.save(ud);


        return mv;
    }

}

pom.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.1.6.RELEASE</version>
            <relativePath/> <!-- lookup parent from repository -->
        </parent>
        <groupId>com.example</groupId>
        <artifactId>demo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>demo</name>
        <description>Demo project for Spring Boot</description>

        <properties>
            <java.version>1.8</java.version>
        </properties>

        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>


----------



            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency> 

            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
                <scope>provided</scope>
            </dependency>


            <!-- JSP -->
            <dependency>
                <groupId>org.apache.tomcat.embed</groupId>
                <artifactId>tomcat-embed-jasper</artifactId>
                <scope>provided</scope>
            </dependency>  


            <dependency>
                <groupId>org.eclipse.jdt.core.compiler</groupId>
                <artifactId>ecj</artifactId>
                <version>4.6.1</version>
                <scope>provided</scope>
            </dependency> 

            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jstl</artifactId>
             </dependency>  

             <!--  -->


            <!-- JPA --> 
                <dependency>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-data-jpa</artifactId>
                </dependency>

            <!--  --> 

        <!-- Use MySQL Connector-J -->

            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId> 
        </dependency> 

        <!--  -->


        </dependencies>

        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>

    </project>

Application.properties

spring.mvc.view.prefix=/pages/
spring.mvc.view.suffix=.jsp


spring.jpa.hibernate.ddl-auto=create  
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect 
spring.jpa.database=MYSQL

spring.datasource.url = jdbc:mysql://localhost:3306/demo
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

我尝试过在另一个系统的另一个spring工具套件中进行同样的操作它在那里工作，但在这里不工作。请帮助我解决这个问题

当我尝试从springboot应用程序连接mysql时出现UnsatisfiedDependencyException

0 个答案: