javaweb各類框架組合案例(四)：maven+spring+springMVC+spring data jpa（hibernate）【失敗案例】

時間  2020-12-14
標籤 html 前端 java mysql web spring sql 數據庫 express apache 欄目 Java 简体版
原文   原文鏈接

1、失敗案例html

1. 控制檯報錯信息前端

嚴重: 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. 初步判斷java

　　spring data jpa 沒法自動實現dao層接口mysql

3. 緣由web

　　未知，非掃描包問題spring

 

2、項目sql

1. 項目總體包結構數據庫

2. 業務express

　　實現一個用戶具備多部手機的業務apache

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頂級依賴包，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所依賴的靜態代理 ， 使用aop方式管理事務，在service方法執行前開啓事務， 方法執行後提交事務，方法執行失敗回滾事務-->
    <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>
    
    <!-- 數據庫方面 -->
    <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須要 -->
    <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">

    <!--指定鏈接池配置 -->
    <!-- dao層 數據庫鏈接部分 -->
    <!-- 加載配置文件 -->
    <context:property-placeholder location="classpath:jdbc.properties" />

    <!-- 配置service掃描 -->
    <context:component-scan base-package="com.xiaog.service" />

    <!-- 數據庫鏈接池 -->
    <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}" />
        <!-- 鏈接池的最大數據庫鏈接數 -->
        <property name="maxActive" value="10" />
        <!-- 最大空閒數 -->
        <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>
        <!-- 配置包掃描，掃描實體 -->
        <property name="packagesToScan" value="com.xiaog.entity"/>
        <property name="jpaProperties">
            <props>
                <!-- 生成的數據表的列的映射策略 -->
                <prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>
                <!-- hibernate 基本屬性 -->
                <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>

    <!-- 配置事務管理器 -->
    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>

    <!-- 開啓事務註解 -->
    <tx:annotation-driven transaction-manager="transactionManager" />
    
    <!--指定Spring Data JPA要進行掃描的包,該包中的類框架會自動爲其建立代理 -->
    <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掃描-->
    <context:component-scan base-package="com.xiaog.controller"/>

    <!-- 註解驅動 -->
    <mvc:annotation-driven/>

    <!--視圖解析器-->
    <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配置文件路徑 -->
    <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>

    <!-- 解決post亂碼問題 -->
    <filter>
        <filter-name>encoding</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <!-- 設置編碼參是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>

    <!-- 添加日誌監聽器 -->
    <!-- <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. 實體層

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;//一個用戶擁有多部手機

    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層

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層

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("進入UserServiceImpl......");
        user = userDao.findByUsernameAndPassword(user); logger.info("user="+user); return user; } }

 

7.controller層

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頁面

<%@ 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="登陸">
        </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

 

3、求解決

　　如有大神可以解決問題，在下感激涕零

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