zoukankan      html  css  js  c++  java
  • javaweb各种框架组合案例(四):maven+spring+springMVC+spring data jpa(hibernate)【失败案例】

    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

    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顶级依赖包,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

  • 相关阅读:
    从0开始学FreeRTOS-(创建任务)-2
    从0开始学FreeRTOS-1
    linux(ubuntu)系统mysql-5.7 修改字符集
    腾讯云服务器简单环境配置
    linux系统ubuntu18.04安装mysql(5.7)
    ubuntu18.04从零开始配置环境(jdk+tomcat+idea)到使用idea开发web应用和servlet
    Eclipse为工具包关联源码(本例工具包为dom4j-1.6.1)
    关于c#(vs)dategridview控件继承不能修改的问题
    C语言写单链表的创建、释放、追加(即总是在最后的位置增加节点)
    c++邻接表存储图(无向),并用广度优先和深度优先遍历(实验)
  • 原文地址:https://www.cnblogs.com/xiaogblog/p/11118726.html
Copyright © 2011-2022 走看看