Java bean或xml文件的问题
我正在尝试创建自己的网上商店。首先,我无法连接数据库。 我有以下文件:Java bean或xml文件的问题,java,xml,spring,maven,servlets,Java,Xml,Spring,Maven,Servlets,我正在尝试创建自己的网上商店。首先,我无法连接数据库。 我有以下文件: Class HomeController.java (with the @Autowired) package controllers Interface ProductDao.java package dao Class ProductDaoImpl implements ProductDao (with @Repository, @Transactional and a @Autowired SessionFactory
Class HomeController.java (with the @Autowired) package controllers
Interface ProductDao.java package dao
Class ProductDaoImpl implements ProductDao (with @Repository, @Transactional and a @Autowired SessionFactory) package dao.impl
Class Product (with the @Entity) package model.
我在properties文件夹中还有一个jdbc.properties文件,其中包含用户名、密码、驱动程序、url信息。
我认为所有这些文件都是对的
所以我很可能会对以下文件有问题
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.mywebsite</groupId>
<artifactId>emusicstore</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<version>1.0.1.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.5</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
4.0.0
com.mywebsite
我真的很抱歉在两天内问同样的问题,但我正试图从本周开始连接数据库,我不能。任何建议都会对我有很大帮助
谢谢大家,迈克
您可以将包名细化为com.demo.controller
,com.demo.dao
,com.demo.service
。然后将其替换为dispatcher-servlet.xml:
HibernateTransactionManager
用于hibernate,DataSourceTransactionManager
用于普通JDBC
我不知道你的代码有什么问题,但我注意到你的方言是错误的,正确的是org.hibernate.dialogue.mysqldialogue
您可以将包名细化为com.demo.controller
,com.demo.dao
,com.demo.service
。然后将其替换为dispatcher-servlet.xml:
HibernateTransactionManager
用于hibernate,DataSourceTransactionManager
用于普通JDBC
我不知道你的代码有什么问题,但我注意到你的方言是错误的,正确的是org.hibernate.dialogue.mysqldialogue
尝试将其添加到上下文和测试中
<bean id="productDao" class="dao.impl.ProductDaoImpl">
尝试将其添加到上下文和测试中
<bean id="productDao" class="dao.impl.ProductDaoImpl">
您想在哪里添加此上下文?您想在哪里添加此上下文?同样的问题。。。还有其他想法吗?同样的问题。。。还有别的想法吗?
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">
<beans profile="dev">
<context:property-placeholder location="properties/jdbc.properties" />
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="password" value="${jdbc.password}"></property>
<property name="username" value="${jdbc.username}"></property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
</props>
</property>
<property name="packagesToScan">
<list>
<value>dao.**.*</value>
</list>
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<!-- <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean> -->
<tx:annotation-driven />
</beans>
</beans>
<bean id="productDao" class="dao.impl.ProductDaoImpl">