javaweb各种框架组合案例(四)：maven+spring+springMVC+springdatajpa（hibernate）【失败案例】
一、失败案例
1.控制台报错信息
严重:Exceptionsendingcontextinitializedeventtolistenerinstanceofclassorg.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.UnsatisfiedDependencyException:Errorcreatingbeanwithname'userServiceImpl':Unsatisfieddependencyexpressedthroughfield'userDao';nestedexceptionisorg.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname'userDao':Invocationofinitmethodfailed;nestedexceptionisjava.util.NoSuchElementException
atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)
atorg.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)
atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)
atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
atorg.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
atorg.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
atorg.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
atorg.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
atorg.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:443)
atorg.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:325)
atorg.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
atorg.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4797)
atorg.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5291)
atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
atorg.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
atorg.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
atjava.util.concurrent.FutureTask.run(FutureTask.java:266)
atjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
atjava.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
atjava.lang.Thread.run(Thread.java:748)
2.初步判断
springdatajpa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
<projectxmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://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>
<!--springdatajpa-->
<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
<?xmlversion="1.0"encoding="UTF-8"?>
<beansxmlns="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/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/data/jpahttp://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-->
<beanid="dataSource"
class="com.alibaba.druid.pool.DruidDataSource"destroy-method="close">
<propertyname="driverClassName"value="${jdbc.driver}"/>
<propertyname="url"value="${jdbc.url}"/>
<propertyname="username"value="${jdbc.username}"/>
<propertyname="password"value="${jdbc.password}"/>
<!--连接池的最大数据库连接数-->
<propertyname="maxActive"value="10"/>
<!--最大空闲数-->
<propertyname="maxIdle"value="5"/>
</bean>
<!--spring整合JPA-->
<beanid="entityManagerFactory"class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<propertyname="dataSource"ref="dataSource"/>
<propertyname="jpaVendorAdapter">
<beanclass="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"></bean>
</property>
<!--配置包扫描，扫描实体-->
<propertyname="packagesToScan"value="com.xiaog.entity"/>
<propertyname="jpaProperties">
<props>
<!--生成的数据表的列的映射策略-->
<propkey="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>
<!--hibernate基本属性-->
<propkey="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
<propkey="hibernate.show_sql">true</prop>
<propkey="hibernate.format_sql">true</prop>
<propkey="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<!--配置事务管理器-->
<beanid="transactionManager"class="org.springframework.orm.jpa.JpaTransactionManager">
<propertyname="entityManagerFactory"ref="entityManagerFactory"/>
</bean>
<!--开启事务注解-->
<tx:annotation-driventransaction-manager="transactionManager"/>
<!--指定SpringDataJPA要进行扫描的包,该包中的类框架会自动为其创建代理-->
<jpa:repositoriesbase-package="com.xiaog.dao"entity-manager-factory-ref="entityManagerFactory"></jpa:repositories>
</beans>
（3）spring-mvc.xml
<?xmlversion="1.0"encoding="UTF-8"?>
<beansxmlns="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/beanshttp://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!--配置controller扫描-->
<context:component-scanbase-package="com.xiaog.controller"/>
<!--注解驱动-->
<mvc:annotation-driven/>
<!--视图解析器-->
<beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver">
<propertyname="prefix"value="/"/>
<propertyname="suffix"value=".jsp"/>
</bean>
</beans>
（4）jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssdj?useSSL=false&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=root
（5）web.xml
<?xmlversion="1.0"encoding="UTF-8"?>
<web-appxmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://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
packagecom.xiaog.entity;
importjavax.persistence.Entity;
importjavax.persistence.GeneratedValue;
importjavax.persistence.GenerationType;
importjavax.persistence.Id;
importjavax.persistence.Table;
@Entity
@Table(name="phone")
publicclassPhone{
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
privateIntegerid;
privateStringbrand;//品牌
publicIntegergetId(){
returnid;
}
publicvoidsetId(Integerid){
this.id=id;
}
publicStringgetBrand(){
returnbrand;
}
publicvoidsetBrand(Stringbrand){
this.brand=brand;
}
@Override
publicStringtoString(){
return"Phone[id="+id+",brand="+brand+"]";
}
}
packagecom.xiaog.entity;
importjava.util.List;
importjavax.persistence.Entity;
importjavax.persistence.GeneratedValue;
importjavax.persistence.GenerationType;
importjavax.persistence.Id;
importjavax.persistence.JoinColumn;
importjavax.persistence.OneToMany;
importjavax.persistence.Table;
@Entity
@Table(name="user")
publicclassUser{
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
privateIntegerid;
privateStringusername;
privateStringpassword;
@OneToMany(targetEntity=Phone.class)
@JoinColumn(name="user_id")
privateList<Phone>phones;//一个用户拥有多部手机
publicIntegergetId(){
returnid;
}
publicvoidsetId(Integerid){
this.id=id;
}
publicStringgetUsername(){
returnusername;
}
publicvoidsetUsername(Stringusername){
this.username=username;
}
publicStringgetPassword(){
returnpassword;
}
publicvoidsetPassword(Stringpassword){
this.password=password;
}
publicList<Phone>getPhones(){
returnphones;
}
publicvoidsetPhones(List<Phone>phones){
this.phones=phones;
}
@Override
publicStringtoString(){
return"User[id="+id+",username="+username+",password="+password+",phones="+phones+"]";
}
}
5.dao层
packagecom.xiaog.dao;
importorg.springframework.data.jpa.repository.JpaRepository;
importorg.springframework.stereotype.Repository;
importcom.xiaog.entity.Phone;
@Repository
publicinterfacePhoneDaoextendsJpaRepository<Phone,Integer>{
}
packagecom.xiaog.dao;
importorg.springframework.data.jpa.repository.JpaRepository;
importorg.springframework.stereotype.Repository;
importcom.xiaog.entity.User;
@Repository
publicinterfaceUserDaoextendsJpaRepository<User,Integer>{
UserfindByUsernameAndPassword(Useruser);
}
6.service层
packagecom.xiaog.service;
importcom.xiaog.entity.User;
publicinterfaceUserService{
Userlogin(Useruser);
}
packagecom.xiaog.service.impl;
importorg.slf4j.Logger;
importorg.slf4j.LoggerFactory;
importorg.springframework.beans.factory.annotation.Autowired;
importorg.springframework.stereotype.Service;
importorg.springframework.transaction.annotation.Transactional;
importcom.xiaog.dao.UserDao;
importcom.xiaog.entity.User;
importcom.xiaog.service.UserService;
@Service
@Transactional
publicclassUserServiceImplimplementsUserService{
@Autowired
privateUserDaouserDao;
privatefinalstaticLoggerlogger=LoggerFactory.getLogger(UserServiceImpl.class);
@Override
publicUserlogin(Useruser){
//logger.info("进入UserServiceImpl......");
user=userDao.findByUsernameAndPassword(user);
logger.info("user="+user);
returnuser;
}
}
7.controller层
packagecom.xiaog.controller;
importorg.slf4j.Logger;
importorg.slf4j.LoggerFactory;
importorg.springframework.beans.factory.annotation.Autowired;
importorg.springframework.stereotype.Controller;
importorg.springframework.ui.Model;
importorg.springframework.web.bind.annotation.RequestMapping;
importcom.xiaog.entity.User;
importcom.xiaog.service.UserService;
@Controller
@RequestMapping("/user")
publicclassUserController{
@Autowired(required=false)
privateUserServiceuserService;
privatefinalstaticLoggerlogger=LoggerFactory.getLogger(UserController.class);
@RequestMapping(value="/login",params={"username","password","username!=","password!="})
publicStringlogin(Modelmodel,Useruser){
logger.info("user(request)="+user);
user=userService.login(user);
logger.info("user="+user);
model.addAttribute("user",user);
return"result";
}
}
8.jsp页面
<%@pagelanguage="java"contentType="text/html;charset=UTF-8"pageEncoding="UTF-8"%>
<!doctypehtml>
<html>
<head>
<metacharset="UTF-8">
<title>Inserttitlehere</title>
</head>
<body>
<formaction="user/login"method="post">
<div>
<label>username</label>
<inputtype="text"name="username"/>
</div>
<div>
<label>password</label>
<inputtype="password"name="password"/>
</div>
<div>
<inputtype="submit"value="登录">
</div>
</form>
</body>
</html>
index.jsp
<%@pagelanguage="java"contentType="text/html;charset=UTF-8"pageEncoding="UTF-8"%>
<!doctypehtml>
<html>
<head>
<metacharset="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
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