javaweb各种框架组合案例(四)：maven+spring+springMVC+spring data jpa（hibernate）【失败案例】

2023-08-12 10:14:40

一、失败案例

1. 控制台报错信息

严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userServiceImpl': Unsatisfied dependency expressed through field 'userDao'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDao': Invocation of init method failed; nested exception is java.util.NoSuchElementException

    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)

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

    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)

    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:761)

    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)

    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)

    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:443)

    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:325)

    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)

    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4797)

    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5291)

    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)

    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)

    at java.util.concurrent.FutureTask.run(FutureTask.java:266)

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

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

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

2. 初步判断

　　spring data jpa 无法自动实现dao层接口

3. 原因

　　未知，非扫描包问题

二、项目

1. 项目整体包结构

javaweb各种框架组合案例(四)：maven+spring+springMVC+spring data jpa（hibernate）【失败案例】

2. 业务

　　实现一个用户具有多部手机的业务

3. 各配置文件

（1）pom.xml

<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>

  <groupId>com.xiaog</groupId>

  <artifactId>testssdj</artifactId>

  <version>0.0.1-SNAPSHOT</version>

  <packaging>war</packaging>

  <dependencies>

      <!-- spring+springmvc*依赖包，包含spring-webmvc、spring-aop、spring-beans、

      spring-context、spring-core、spring-jcl、spring-expression、spring-web -->

      <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-webmvc</artifactId>

      <version>4.3.10.RELEASE</version>

    </dependency>

    <!-- spring-aop所依赖的静态代理 ，

        使用aop方式管理事务，在service方法执行前开启事务，

        方法执行后提交事务，方法执行失败回滚事务-->

    <dependency>

        <groupId>org.aspectj</groupId>

        <artifactId>aspectjrt</artifactId>

        <version>1.8.0</version>

    </dependency>

    <dependency>

        <groupId>org.aspectj</groupId>

        <artifactId>aspectjweaver</artifactId>

        <version>1.8.0</version>

    </dependency>

    <!-- 数据库方面 -->

    <dependency>

        <groupId>mysql</groupId>

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

        <version>5.1.47</version>

    </dependency>

    <dependency>

        <groupId>com.alibaba</groupId>

        <artifactId>druid</artifactId>

        <version>1.1.10</version>

    </dependency>

    <!-- orm框架 -->

    <dependency>

        <groupId>org.hibernate</groupId>

        <artifactId>hibernate-core</artifactId>

        <version>4.2.2.Final</version>

    </dependency>

    <dependency>

        <groupId>org.hibernate</groupId>

        <artifactId>hibernate-entitymanager</artifactId>

        <version>4.2.2.Final</version>

    </dependency>

    <!-- spring data jpa -->

    <dependency>

        <groupId>org.springframework.data</groupId>

        <artifactId>spring-data-jpa</artifactId>

        <version>1.11.3.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.slf4j</groupId>

        <artifactId>slf4j-api</artifactId>

        <version>1.7.25</version>

    </dependency>

    <dependency>

        <groupId>org.slf4j</groupId>

        <artifactId>slf4j-log4j12</artifactId>

        <version>1.7.25</version>

    </dependency>

    <!-- Logback -->

    <!-- <dependency>

        <groupId>ch.qos.logback</groupId>

        <artifactId>logback-classic</artifactId>

        <version>0.9.19</version>

    </dependency>

    <dependency>

        <groupId>org.logback-extensions</groupId>

        <artifactId>logback-ext-spring</artifactId>

        <version>0.1.2</version>

    </dependency>

    <dependency>

        <groupId>org.slf4j</groupId>

        <artifactId>jcl-over-slf4j</artifactId>

        <version>1.6.6</version>

    </dependency> --> 

    <!-- jsp需要 -->

    <dependency>

      <groupId>javax.servlet</groupId>

      <artifactId>servlet-api</artifactId>

      <version>3.0-alpha-1</version>

      <scope>provided</scope>

    </dependency>

    <dependency>

      <groupId>jstl</groupId>

      <artifactId>jstl</artifactId>

      <version>1.1.2</version>

    </dependency>

  </dependencies>

  <build>

  <defaultGoal>compile</defaultGoal>

      <plugins>

          <!-- maven插件 -->

         <plugin>

            <groupId>org.apache.maven.plugins</groupId>

            <artifactId>maven-compiler-plugin</artifactId>

            <version>3.1</version>

            <configuration>

            <source>1.8</source>

            <target>1.8</target>

                <encoding>UTF-8</encoding>

            </configuration>

         </plugin> 

        <!-- tomcat插件 -->

        <plugin>

            <groupId>org.apache.tomcat.maven</groupId>

            <artifactId>tomcat7-maven-plugin</artifactId>

            <version>2.1</version>

            <configuration>

                <port>9999</port>

                <path>/testssdj</path>

                <uriEncoding>UTF-8</uriEncoding>

                <finalName>testssdj</finalName>

                <server>tomcat7</server>

            </configuration>

        </plugin>

      </plugins>

  </build>

</project>

（2）spring-context.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:tx="http://www.springframework.org/schema/tx"

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

    xmlns:jpa="http://www.springframework.org/schema/data/jpa"

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

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

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

                        http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">

    <!--指定连接池配置 -->

    <!-- dao层 数据库连接部分 -->

    <!-- 加载配置文件 -->

    <context:property-placeholder

        location="classpath:jdbc.properties" />

    <!-- 配置service扫描 -->

    <context:component-scan

        base-package="com.xiaog.service" />

    <!-- 数据库连接池 -->

    <bean id="dataSource"

        class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">

        <property name="driverClassName" value="${jdbc.driver}" />

        <property name="url" value="${jdbc.url}" />

        <property name="username" value="${jdbc.username}" />

        <property name="password" value="${jdbc.password}" />

        <!-- 连接池的最大数据库连接数 -->

        <property name="maxActive" value="10" />

        <!-- 最大空闲数 -->

        <property name="maxIdle" value="5" />

    </bean>

    <!-- spring整合JPA -->

    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">

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

        <property name="jpaVendorAdapter">

            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"></bean>

        </property>

        <!-- 配置包扫描，扫描实体 -->

        <property name="packagesToScan" value="com.xiaog.entity"/>

        <property name="jpaProperties">

            <props>

                <!-- 生成的数据表的列的映射策略 -->

                <prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>

                <!-- hibernate 基本属性 -->

                <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>

                <prop key="hibernate.show_sql">true</prop>

                <prop key="hibernate.format_sql">true</prop>

                <prop key="hibernate.hbm2ddl.auto">update</prop>

            </props>

        </property>

    </bean>

    <!-- 配置事务管理器 -->

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">

        <property name="entityManagerFactory" ref="entityManagerFactory" />

    </bean>

    <!-- 开启事务注解 -->

    <tx:annotation-driven transaction-manager="transactionManager" />

    <!--指定Spring Data JPA要进行扫描的包,该包中的类框架会自动为其创建代理 -->

    <jpa:repositories base-package="com.xiaog.dao" entity-manager-factory-ref="entityManagerFactory"></jpa:repositories>

</beans>

（3）spring-mvc.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: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-4.0.xsd

              http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd

              http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

    <!--配置controller扫描-->

    <context:component-scan base-package="com.xiaog.controller"/>

    <!-- 注解驱动 -->

    <mvc:annotation-driven/>

    <!--视图解析器-->

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/"/>

        <property name="suffix" value=".jsp"/>

    </bean>

</beans>

（4）jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/ssdj?useSSL=false&amp;useUnicode=true&amp;characterEncoding=utf8

jdbc.username=root

jdbc.password=root

（5）web.xml

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

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns="http://java.sun.com/xml/ns/javaee"

    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"

    version="3.0">

    <display-name>testssdj</display-name>

    <!-- spring配置文件路径 -->

    <context-param>

        <param-name>contextConfigLocation</param-name>

        <param-value>classpath:spring-context.xml</param-value>

    </context-param>

    <listener>

        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

    </listener>

    <!-- 解决post乱码问题 -->

    <filter>

        <filter-name>encoding</filter-name>

        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

        <!-- 设置编码参是UTF8 -->

        <init-param>

            <param-name>encoding</param-name>

            <param-value>UTF-8</param-value>

        </init-param>

    </filter>

    <filter-mapping>

        <filter-name>encoding</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

    <!-- 配置SpringMvc 前端控制器 -->

    <servlet>

        <servlet-name>spring-mvc</servlet-name>

        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <!--指定SpringMvc 配置文件 -->

        <init-param>

            <param-name>contextConfigLocation</param-name>

            <param-value>classpath:spring-mvc.xml</param-value>

        </init-param>

    </servlet>

    <servlet-mapping>

        <servlet-name>spring-mvc</servlet-name>

        <url-pattern>/</url-pattern>

    </servlet-mapping>

    <!-- 添加日志监听器 -->

    <!-- <context-param>

        <param-name>logbackConfigLocation</param-name>

        <param-value>classpath:logback.xml</param-value>

    </context-param>

    <listener>

        <listener-class>ch.qos.logback.ext.spring.web.LogbackConfigListener</listener-class>

    </listener>  -->

    <welcome-file-list>

        <welcome-file>index.jsp</welcome-file>

    </welcome-file-list>

</web-app>

4. 实体层

package com.xiaog.entity;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import javax.persistence.Id;

import javax.persistence.Table;

@Entity

@Table(name="phone")

public class Phone {

    @Id

    @GeneratedValue(strategy=GenerationType.IDENTITY)

    private Integer id;

    private String brand;//品牌

    public Integer getId() {

        return id;

    }

    public void setId(Integer id) {

        this.id = id;

    }

    public String getBrand() {

        return brand;

    }

    public void setBrand(String brand) {

        this.brand = brand;

    }

    @Override

    public String toString() {

        return "Phone [id=" + id + ", brand=" + brand + "]";

    }

}
package com.xiaog.entity;

import java.util.List;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import javax.persistence.Id;

import javax.persistence.JoinColumn;

import javax.persistence.OneToMany;

import javax.persistence.Table;

@Entity

@Table(name="user")

public class User {

    @Id

    @GeneratedValue(strategy=GenerationType.IDENTITY)

    private Integer id;

    private String username;

    private String password;

    @OneToMany(targetEntity=Phone.class)

    @JoinColumn(name="user_id")

    private List<Phone> phones;//一个用户拥有多部手机

    public Integer getId() {

        return id;

    }

    public void setId(Integer id) {

        this.id = id;

    }

    public String getUsername() {

        return username;

    }

    public void setUsername(String username) {

        this.username = username;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    public List<Phone> getPhones() {

        return phones;

    }

    public void setPhones(List<Phone> phones) {

        this.phones = phones;

    }

    @Override

    public String toString() {

        return "User [id=" + id + ", username=" + username + ", password=" + password + ", phones=" + phones + "]";

    }

}

5. dao层

package com.xiaog.dao;

import org.springframework.data.jpa.repository.JpaRepository;

import org.springframework.stereotype.Repository;

import com.xiaog.entity.Phone;

@Repository

public interface PhoneDao extends JpaRepository<Phone, Integer> {

}
package com.xiaog.dao;

import org.springframework.data.jpa.repository.JpaRepository;

import org.springframework.stereotype.Repository;

import com.xiaog.entity.User;

@Repository

public interface UserDao extends JpaRepository<User, Integer> {

    User findByUsernameAndPassword(User user);

}

6. service层

package com.xiaog.service;

import com.xiaog.entity.User;

public interface UserService {

    User login(User user);

}
package com.xiaog.service.impl;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import org.springframework.transaction.annotation.Transactional;

import com.xiaog.dao.UserDao;

import com.xiaog.entity.User;

import com.xiaog.service.UserService;

@Service

@Transactional

public class UserServiceImpl implements UserService {

    @Autowired

    private UserDao userDao;

    private final static Logger logger = LoggerFactory.getLogger(UserServiceImpl.class);

    @Override

    public User login(User user) {

        //logger.info("进入UserServiceImpl......");

        user = userDao.findByUsernameAndPassword(user);

        logger.info("user="+user);

        return user;

    }

}

7.controller层

package com.xiaog.controller;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.RequestMapping;

import com.xiaog.entity.User;

import com.xiaog.service.UserService;

@Controller

@RequestMapping("/user")

public class UserController {

    @Autowired(required=false)

    private UserService userService;

    private final static Logger logger = LoggerFactory.getLogger(UserController.class);

    @RequestMapping(value = "/login",params= {"username","password","username!=","password!="})

    public String login(Model model,User user) {

        logger.info("user(request)="+user);

        user = userService.login(user);

        logger.info("user="+user);

        model.addAttribute("user", user);

        return "result";

    }

}

8.jsp页面

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>

<!doctype html>

<html>

<head>

<meta charset="UTF-8">

<title>Insert title here</title>

</head>

<body>

    <form action="user/login" method="post">

        <div>

            <label>username</label>

            <input type="text" name="username"/>

        </div>

        <div>

            <label>password</label>

            <input type="password" name="password"/>

        </div>

        <div>

            <input type="submit" value="登录">

        </div>

    </form>

</body>

</html>

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>

<!doctype html>

<html>

<head>

<meta charset="UTF-8">

<title></title>

</head>

<body>

    username=${user}

</body>

</html>

result.jsp

三、求解决

　　若有大神能够解决问题，在下感激不尽

上一篇：【数据表格】datatable+SpringMVC+Spring Data JPA


下一篇：R语言语法基础二