搭建SpringMVC+Hibernate4+Spring3+Ajax+Maven项目

首先新建一个Maven项目，百度一下会有很多实例，这里就不介绍了，直接奔主题。

如题：这里使用的是Hibernate4和Spring3，使用的JPA和Spring注解，然后JDK版本是1.7

下面这张图片演示的是整个项目的结构图。

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首先配置pom.xml，将所需的jar包配置好，如下，

<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/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

<modelVersion>4.0.0</modelVersion>

<groupId>org.phn</groupId>

<artifactId>PHN</artifactId>

<packaging>war</packaging>

<version>0.0.1-SNAPSHOT</version>

<name>PHN Maven Webapp</name>

<url>http://maven.apache.org</url>

 

<!-- 指定maven仓库 -->

<repositories><!-- 发现依赖和扩展的远程资源库 -->

<!-- maven自己官方仓库 -->

<repository>

<id>maven</id>

<name>Maven Repository Switchboard</name>

<layout>default</layout>

<url>http://repo1.maven.org/maven2</url>

<snapshots>

<enabled>false</enabled>

</snapshots>

</repository>

<!-- 阿里巴巴发布版本仓库 -->

<repository>

<id>alibaba-opensource</id>

<name>alibaba-opensource</name>

<url>http://code.alibabatech.com/mvn/releases/</url>

<layout>default</layout>

</repository>

<!-- 阿里巴巴快照版本仓库 -->

<repository>

<id>alibaba-opensource-snapshot</id>

<name>alibaba-opensource-snapshot</name>

<url>http://code.alibabatech.com/mvn/snapshots/</url>

<layout>default</layout>

</repository>

</repositories>

 

<properties>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<!-- spring版本号 -->

<spring.version>3.2.4.RELEASE</spring.version>

<hibernate.version>4.2.5.Final</hibernate.version>

<!-- log4j日志文件管理包版本 -->

<!-- <slf4j.version>1.7.10</slf4j.version> -->

<log4j.version>1.2.17</log4j.version>

</properties>

<!-- maven打成war包放到tomcat目录下，即可运行 -->

<build>

<finalName>PHN</finalName>

<plugins>

<plugin>

<artifactId>maven-war-plugin</artifactId>

</plugin>

<plugin>

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

<configuration>

<source>1.7</source>

<target>1.7</target>

</configuration>

</plugin>

</plugins>

</build>

<dependencies>

<!-- junit测试包 -->

<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<version>4.11</version>

<scope>test</scope>

</dependency>

 

<!-- servlet api jar -->

<dependency>

<groupId>javax.servlet</groupId>

<artifactId>servlet-api</artifactId>

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

<scope>provided</scope>

</dependency>

<!-- jstl -->

<dependency>

<groupId>javax.servlet</groupId>

<artifactId>jstl</artifactId>

<version>1.2</version>

</dependency>

<dependency>

<groupId>javax.servlet.jsp</groupId>

<artifactId>jsp-api</artifactId>

<version>2.1</version>

<scope>provided</scope>

</dependency>

<!-- 文件上传 -->

<dependency>

<groupId>commons-fileupload</groupId>

<artifactId>commons-fileupload</artifactId>

<version>1.2.2</version>

</dependency>

 

<!-- fastJson json数组有关的 -->

<dependency>

<groupId>com.alibaba</groupId>

<artifactId>fastjson</artifactId>

<version>1.1.26</version>

</dependency>

 

<!-- 使用 Jackson 把 Java 对象转换成 JSON 字串 -->

<dependency>

<groupId>org.codehaus.jackson</groupId>

<artifactId>jackson-mapper-asl</artifactId>

<version>1.9.11</version>

</dependency>

<!-- mysql驱动包 -->

<dependency>

<groupId>mysql</groupId>

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

<version>5.1.29</version>

</dependency>

<!-- 阿里巴巴数据源包 -->

<dependency>

<groupId>com.alibaba</groupId>

<artifactId>druid</artifactId>

<version>1.0.2</version>

</dependency>

<!-- 日志文件管理包 -->

<!-- log start -->

<dependency>

<groupId>log4j</groupId>

<artifactId>log4j</artifactId>

<version>${log4j.version}</version>

</dependency>

<!-- <dependency>

<groupId>org.slf4j</groupId>

<artifactId>slf4j-api</artifactId>

<version>${slf4j.version}</version>

</dependency>

<dependency>

<groupId>org.slf4j</groupId>

<artifactId>slf4j-log4j12</artifactId>

<version>${slf4j.version}</version>

</dependency> -->

 

 

<!-- aspectjweaver.jar这是Spring AOP所要用到的包 -->

<dependency>

<groupId>org.aspectj</groupId>

<artifactId>aspectjweaver</artifactId>

<version>1.7.1</version>

</dependency>

 

<!-- hibernate4 -->

<dependency>

<groupId>org.hibernate</groupId>

<artifactId>hibernate-core</artifactId>

<version>4.2.5.Final</version>

</dependency>

<dependency>

<groupId>org.hibernate</groupId>

<artifactId>hibernate-entitymanager</artifactId>

<version>${hibernate.version}</version>

</dependency>

<dependency>

<groupId>org.hibernate</groupId>

<artifactId>hibernate-ehcache</artifactId>

<version>${hibernate.version}</version>

</dependency>

<dependency>

<groupId>org.hibernate.javax.persistence</groupId>

<artifactId>hibernate-jpa-2.0-api</artifactId>

<version>1.0.1.Final</version>

</dependency>

 

<!-- spring mvc -->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-webmvc</artifactId>

<version>${spring.version}</version>

</dependency>

 

<!-- spring3 -->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-core</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-context</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-jdbc</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-beans</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-web</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-expression</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-orm</artifactId>

<version>${spring.version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-test</artifactId>

<version>${spring.version}</version>

</dependency>

 

 

</dependencies>

</project>

然后建日志配置文件log4j.properties，如下

log4j.rootLogger=INFO,A1,R

 

log4j.appender.A1=org.apache.log4j.ConsoleAppender

log4j.appender.A1.Target=System.out

log4j.appender.A1.layout=org.apache.log4j.PatternLayout

log4j.appender.A1.layout.ConversionPattern=[%c]%m%n

 

log4j.appender.R=org.apache.log4j.RollingFileAppender

log4j.appender.R.File=sshf.log

log4j.appender.R.MaxFileSize=10MB

log4j.appender.R.Threshold=ALL

log4j.appender.R.layout=org.apache.log4j.PatternLayout

log4j.appender.R.layout.ConversionPattern=[%p][%d{yyyy-MM-dd HH\:mm\:ss,SSS}][%c]%m%n

继续建jdbc配置文件config.properties，如下，其中很多多余的，可以按照自己需要的进行配置，相信都会看得懂的，

#\u5C5E\u6027\u6587\u4EF6

 

#Oracle \u7684\u914D\u7F6E

#hibernate.dialect=org.hibernate.dialect.OracleDialect

#driverClassName=oracle.jdbc.driver.OracleDriver

#validationQuery=SELECT 1 FROM DUAL

#jdbc_url=jdbc:oracle:thin:@localhost:1521:orcl

#jdbc_username=

#jdbc_password=

 

#SQLServer \u7684\u914D\u7F6E

#hibernate.dialect=org.hibernate.dialect.SQLServerDialect

#driverClassName=net.sourceforge.jtds.jdbc.Driver

#validationQuery=SELECT 1

#jdbc_url=jdbc:jtds:sqlserver://127.0.0.1:1433/sy

#jdbc_username=

#jdbc_password=

 

#Derby \u7684\u914D\u7F6E

#hibernate.dialect=org.hibernate.dialect.DerbyDialect

#driverClassName=org.apache.derby.jdbc.EmbeddedDriver

#validationQuery=SELECT 1

#jdbc_url=jdbc:derby:sy;create=true

#jdbc_username=

#jdbc_password=

 

#MySQL \u7684\u914D\u7F6E

hibernate.dialect=org.hibernate.dialect.MySQLDialect

driverClassName=com.mysql.jdbc.Driver

validationQuery=SELECT 1

jdbc_url=jdbc:mysql://localhost:3306/phn?useUnicode=true&characterEncoding=utf-8

jdbc_username=root

jdbc_password=123456

 

hibernate.hbm2ddl.auto=update

hibernate.show_sql=true

hibernate.format_sql=false

 

sessionInfoName=sessionInfo

 

uploadFieldName=filedata

uploadFileMaxSize=20971520

uploadFileExts=txt,rar,zip,doc,docx,xls,xlsx,jpg,jpeg,gif,png,swf,wmv,avi,wma,mp3,mid

uploadDirectory=attached

接着继续配置web.xml文件，其中有3个文件，名为：spring.xml,spring-hibernate.xml,spring-mvc.xml，顾名思义相信大家应该也可以猜出一部分，其中spring.xml和spring-hibernate.xml是可以合并成applicationcontext.xml文件的，这里是为了区分以后可能会有什么Spring-mybatis.xml等等，

<?xml version="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/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"

version="3.0">

<display-name></display-name>

<!-- spring hibernate -->

<context-param>

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

<param-value>classpath:spring.xml,classpath:spring-hibernate.xml</param-value>

</context-param>

<!-- openSessionInView配置 -->

<filter>

<filter-name>openSessionInViewFilter</filter-name>

<filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>

<init-param>

<param-name>singleSession</param-name>

<param-value>true</param-value>

</init-param>

</filter>

<!--spring mvc 配置 -->

<servlet>

<servlet-name>springMVC</servlet-name>

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

<init-param>

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

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

</init-param>

<load-on-startup>1</load-on-startup><!-- 是启动顺序，让这个Servlet随Servletp容器一起启动。 -->

</servlet>

 

<servlet-mapping>

<servlet-name>springMVC</servlet-name>

<url-pattern>/</url-pattern><!-- 会拦截/的请求。 -->

</servlet-mapping>

 

 

<!-- encodeing -->

<filter>

<filter-name>encodingFilter</filter-name>

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

<init-param>

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

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

</init-param>

<init-param>

<param-name>forceEncoding</param-name>

<param-value>true</param-value>

</init-param>

</filter>

<!-- encoding filter for jsp page -->

<filter-mapping>

<filter-name>encodingFilter</filter-name>

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

</filter-mapping>

 

 

<listener>

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

</listener>

 

<welcome-file-list>

<welcome-file>/WEB-INF/jsp/login.jsp</welcome-file>

</welcome-file-list>

</web-app>

接着我们开始建Spring.xml，如下，就不解释具体元素的意义了，直接看注释吧，写的很详细的，

<?xml version="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"xsi:schemaLocation="

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

http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

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

http://www.springframework.org/schema/context/spring-context-3.0.xsd

">

 

<!-- 引入属性文件 -->

<context:property-placeholderlocation="classpath:config.properties"/>

 

<!-- 自动扫描dao和service包(自动注入) -->

<context:component-scanbase-package="com.phn.dao,com.phn.service"/>

 

</beans>

继续建spring-hibernate.xml，同样注释也都比较详细了，大家仔细看是可以看懂的，

<?xml version="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:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="

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

http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

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

http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

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

http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

">

 

<!-- JNDI(通过Tomcat)方式配置数据源 -->

<!-- <bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="${jndiName}"></property> </bean> -->

 

 

<!-- 配置数据源 -->

<beanname="dataSource"class="com.alibaba.druid.pool.DruidDataSource"init-method="init"destroy-method="close">

<propertyname="url"value="${jdbc_url}"/>

<propertyname="username"value="${jdbc_username}"/>

<propertyname="password"value="${jdbc_password}"/>

 

<!-- 初始化连接大小 -->

<propertyname="initialSize"value="0"/>

<!-- 连接池最大使用连接数量 -->

<propertyname="maxActive"value="20"/>

<!-- 连接池最大空闲 -->

<propertyname="maxIdle"value="20"/>

<!-- 连接池最小空闲 -->

<propertyname="minIdle"value="0"/>

<!-- 获取连接最大等待时间 -->

<propertyname="maxWait"value="60000"/>

 

<!-- <property name="poolPreparedStatements" value="true" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="33" /> -->

 

<propertyname="validationQuery"value="${validationQuery}"/>

<propertyname="testOnBorrow"value="false"/>

<propertyname="testOnReturn"value="false"/>

<propertyname="testWhileIdle"value="true"/>

 

<!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->

<propertyname="timeBetweenEvictionRunsMillis"value="60000"/>

<!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->

<propertyname="minEvictableIdleTimeMillis"value="25200000"/>

 

<!-- 打开removeAbandoned功能 -->

<propertyname="removeAbandoned"value="true"/>

<!-- 1800秒，也就是30分钟 -->

<propertyname="removeAbandonedTimeout"value="1800"/>

<!-- 关闭abanded连接时输出错误日志 -->

<propertyname="logAbandoned"value="true"/>

 

<!-- 监控数据库 -->

<!-- <property name="filters" value="stat" /> -->

<propertyname="filters"value="mergeStat"/>

</bean>

 

<!-- 配置hibernate session工厂 -->

<beanid="sessionFactory"class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">

<propertyname="dataSource"ref="dataSource"/>

<propertyname="hibernateProperties">

<props>

<propkey="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>

<propkey="hibernate.dialect">${hibernate.dialect}</prop>

<propkey="hibernate.show_sql">${hibernate.show_sql}</prop>

<propkey="hibernate.format_sql">${hibernate.format_sql}</prop>

</props>

</property>

 

<!-- 自动扫描注解方式配置的hibernate类文件 -->

<propertyname="packagesToScan">

<list>

<value>com.phn.model</value>

</list>

</property>

</bean>

 

<!-- 配置事务管理器 -->

<beanname="transactionManager"class="org.springframework.orm.hibernate4.HibernateTransactionManager">

<propertyname="sessionFactory"ref="sessionFactory"></property>

</bean>

 

<!-- 注解方式配置事物 -->

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

 

<!-- 拦截器方式配置事物 -->

<tx:adviceid="transactionAdvice"transaction-manager="transactionManager">

<tx:attributes>

<tx:methodname="add*"/>

<tx:methodname="save*"/>

<tx:methodname="update*"/>

<tx:methodname="modify*"/>

<tx:methodname="edit*"/>

<tx:methodname="delete*"/>

<tx:methodname="remove*"/>

<tx:methodname="repair"/>

<tx:methodname="deleteAndRepair"/>

 

<tx:methodname="get*"propagation="SUPPORTS"/>

<tx:methodname="find*"propagation="SUPPORTS"/>

<tx:methodname="load*"propagation="SUPPORTS"/>

<tx:methodname="search*"propagation="SUPPORTS"/>

<tx:methodname="datagrid*"propagation="SUPPORTS"/>

<!-- 这里是针对我写的判断用户是否存在数据库的方法的事务，如果不配置的话就会出现no session异常 --> 

<tx:methodname="is*"/>

 

<tx:methodname="*"propagation="SUPPORTS"/>

</tx:attributes>

</tx:advice>

<aop:config>

<aop:pointcutid="transactionPointcut"expression="execution(* com.phn.service..*Impl.*(..))"/>

<aop:advisorpointcut-ref="transactionPointcut"advice-ref="transactionAdvice"/>

</aop:config>

</beans>

继续建spring-mvc.xml，这里也不讲了哈，感觉没什么讲的，哈哈，有几个需要注意的地方最后讲，先把项目搭起来再说，

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

<beansxmlns="http://www.springframework.org/schema/beans"

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

xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

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

http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

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

http://www.springframework.org/schema/context/spring-context-3.1.xsd

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

http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

 

<!-- 注解扫描包 -->

<context:component-scanbase-package="com.phn.controller"/>

 

<!-- <context:component-scan /> -->

<!-- 扫描指定的包中的类上的注解，常用的注解有： -->

<!-- @Controller 声明Action组件 -->

<!-- @Service 声明Service组件 @Service("xxxService") -->

<!-- @Repository 声明Dao组件 -->

<!-- @Component 泛指组件, 当不好归类时. -->

<!-- @RequestMapping("/menu") 请求映射 -->

<!-- @Resource 用于注入，( j2ee提供的 ) 默认按名称装配，@Resource(name="beanName") -->

<!-- @Autowired 用于注入，(spring提供的) 默认按类型装配 -->

<!-- @Transactional( rollbackFor={Exception.class}) 事务管理 -->

<!-- @ResponseBody将内容或对象作为 HTTP 响应正文返回，并调用适合HttpMessageConverter的Adapter转换对象，写入输出流 -->

<!-- @Scope("prototype") 设定bean的作用域 -->

 

 

<!-- 开启MVC注解,表示SpringMVC支持注解功能 做了很多事情，不包括添加自己定义的拦截器 -->

<mvc:annotation-driven/>

 

<!-- 拦截器 -->

<!-- <mvc:interceptors> <bean class="com.phn.inteceptor" /> </mvc:interceptors> -->

 

<!-- 方案一 （二选一）表示不对静态资源如CSS、JS、HTML等进行拦截 -->

<!-- 当在web.xml 中 DispatcherServlet使用 <url-pattern>/</url-pattern> 映射时，能映射静态资源,使用默认的servlet来响应请求 -->

<!-- <mvc:default-servlet-handler /> -->

 

<!-- 方案二 （二选一） 静态资源映射 -->

<mvc:resourcesmapping="/images/**"location="/WEB-INF/images/"/>

<mvc:resourcesmapping="/css/**"location="/WEB-INF/css/"/>

<mvc:resourcesmapping="/js/**"location="/WEB-INF/js/"/>

<mvc:resourcesmapping="/html/**"location="/WEB-INF/html/"/>

 

<bean

class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">

<propertyname="messageConverters">

<list>

<bean

class="org.springframework.http.converter.StringHttpMessageConverter">

<propertyname="supportedMediaTypes">

<list>

<value>text/plain;charset=UTF-8</value>

</list>

</property>

</bean>

</list>

</property>

</bean>

 

 

<!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->

<bean

class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">

<propertyname="messageConverters">

<list>

<bean

class="org.springframework.http.converter.StringHttpMessageConverter">

<propertyname="supportedMediaTypes">

<list>

<value>text/plain;charset=UTF-8</value>

</list>

</property>

</bean>

<bean

class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">

<propertyname="supportedMediaTypes">

<list>

<value>application/json;charset=UTF-8</value>

</list>

</property>

</bean>

</list>

</property>

</bean>

 

</beans>

到这里配置的已经差不多了，接下来开始编写服务器端的代码。

记得先建立一个数据库哈，这个不要忘记了，我建的是phn命名的数据库。

大家先按照我对包命名的方式对自己的项目建好响应的包吧，这样快速好继续一下步骤。

先从实体开始吧，在model包中建一个UserEntity类，代码如下，这里使用了Java JPA，已经在Spring-Hibernate.xml里面配置了可以自动生成数据库表的相应代码了。

package com.phn.model;

 

import javax.persistence.Column;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import javax.persistence.Id;

import javax.persistence.Table;

 

/**

* @author phn

*/

@Table(name="t_user")

@Entity

publicclassUserEntity{

privateint id;

privateString username;

privateString password;

privateboolean sex;// 默认为0；0表示男，1表示女

 

@Id

@GeneratedValue(strategy =GenerationType.IDENTITY)

@Column(name ="UID", nullable =false, length =9)

publicint getId(){

return id;

}

 

publicvoid setId(int id){

this.id = id;

}

 

@Column(name ="UNAME", nullable =false, length =20)

publicString getUsername(){

return username;

}

 

publicvoid setUsername(String username){

this.username = username;

}

 

@Column(name ="UPASSWORD", nullable =false, length =32)

publicString getPassword(){

return password;

}

 

publicvoid setPassword(String password){

this.password = password;

}

 

@Column(name ="USEX", nullable =false, length =1)

publicboolean isSex(){

return sex;

}

 

publicvoid setSex(boolean sex){

this.sex = sex;

}

 

@Override

publicString toString(){

return"User [ \nid : "+this.id +"\nusername : "+this.username

+"\npassword : "+this.password +"\nsex : "+this.sex

+" ]";

}

 

}

接着开始编写数据访问层（DAO层）接口，新建IUserDao接口，添加一下代码，这里就写了一个方法判断用户是否存在，用来验证用户登录。

package com.phn.dao;

 

import com.phn.model.UserEntity;

 

/**

* @author phn

*/

publicinterfaceIUserDao{

publicboolean isExist(UserEntity user);

}

继续编写数据访问层（DAO层）的实现类UserDaoImpl类，依赖注入使用的是@Resource注解，还可以用@Autowired注解的，这里先不解释，后面再解释，继续我们项目的搭建。

package com.phn.dao.impl;

 

import javax.annotation.Resource;

 

import org.hibernate.Query;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.springframework.stereotype.Repository;

 

import com.phn.dao.IUserDao;

import com.phn.model.UserEntity;

 

/**

* @author phn

*/

 

@Repository("userDao")

publicclassUserDaoImplimplementsIUserDao{

@Resource

protectedSessionFactory sessionFactory;

 

 

publicSession getSession(){

return sessionFactory.getCurrentSession();

}

 

publicvoid setSessionFactory(SessionFactory sessionFactory){

this.sessionFactory = sessionFactory;

}

 

@Override

publicboolean isExist(UserEntity user){

Session session =this.getSession();

String hql ="from UserEntity where username =? and password = ?";

Query query = session.createQuery(hql);

query.setString(0, user.getUsername());

query.setString(1, user.getPassword());

if(query.list().size()>=1){

returntrue;

}

returnfalse;

}

}

数据访问层编写完了，我们测试看看方法可以用不咯

建一个UserDaoTest测试类，注意放在test资源包下面哈，代码如下，这里关于Junit+Spring测试使用注解引入单个和多个文件的区别留着后面讲，哈哈，是不是好多坑了，没事，等会一个一个填，我们先把项目弄好跑起来，最后来研究细节，这是我的学习方法，个人觉得要是整了半天最后弄不好不就白干了，哈哈，不说多了，继续，

package com.phn.dao;

 

import javax.annotation.Resource;

 

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import org.springframework.test.context.transaction.TransactionConfiguration;

import org.springframework.transaction.annotation.Transactional;

 

import com.phn.model.UserEntity;

 

@ContextConfiguration(locations ={"classpath:spring.xml","classpath:spring-hibernate.xml"})

@RunWith(SpringJUnit4ClassRunner.class)

// defaultRollback=true不会改变数据库，false会改变数据库

@TransactionConfiguration(transactionManager ="transactionManager", defaultRollback =true)

@Transactional

publicclassUserDaoTest{

@Resource

privateIUserDao userDao;

 

@Test

publicvoid testIsExist(){

UserEntity user =newUserEntity();

user.setUsername("phn");

user.setPassword("123456");

boolean result = userDao.isExist(user);

System.out.println(result);

}

 

}

测试结果应该是对的吧，不对的话赶紧从前面开始看看什么地方错了，改正一下继续，看我的测试结果

继续编写业务逻辑层（Service层）接口，新建IUserService接口，代码如下，

package com.phn.service;

 

import com.phn.model.UserEntity;

 

/**

* @author phn

*/

publicinterfaceIUserService{

publicboolean isExist(UserEntity user);

}

继续编写业务逻辑层（Service层）实现类UserServiceImpl类，这里使用了@Transactional事务标签，不能少的哈，不多说，还是后面解释。

package com.phn.service.impl;

 

import javax.annotation.Resource;

 

import org.springframework.stereotype.Service;

import org.springframework.transaction.annotation.Transactional;

 

import com.phn.dao.IUserDao;

import com.phn.model.UserEntity;

import com.phn.service.IUserService;

 

/**

* @author phn

*/

@Transactional

@Service("userService")

publicclassUserServiceImplimplementsIUserService{

@Resource

privateIUserDao userDao;

 

@Override

publicboolean isExist(UserEntity user){

return userDao.isExist(user);

}

 

}

业务逻辑层也ok了，我们测试一下，同样建一个UserServiceTest测试类，代码如下，其实和dao层的代码差不多，就是一些细节需要注意一下的话，后面讲，继续

package com.phn.service;

 

 

import javax.annotation.Resource;

 

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

 

import com.phn.model.UserEntity;

 

@ContextConfiguration(locations={"classpath:spring.xml","classpath:spring-hibernate.xml"})

@RunWith(SpringJUnit4ClassRunner.class)

publicclass UserServiceTest{

@Resource

privateIUserService userService;

@Test

publicvoid testIsExist(){

UserEntity user =newUserEntity();

user.setUsername("phn");

user.setPassword("123456");

boolean result = userService.isExist(user);

System.out.println(result);

}

 

}

同样测试结果应该是对的吧，不对的话赶紧从前面开始看看什么地方错了，改正一下继续，我的测试结果如下

下面就开始控制层（Controller层或者又叫Action层）的编码，新建一个UserController类，代码如下

package com.phn.controller;

 

 

import java.util.HashMap;

import java.util.Map;

 

import javax.annotation.Resource;

 

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

import org.springframework.stereotype.Controller;

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

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

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

 

import com.phn.model.UserEntity;

import com.phn.service.IUserService;

 

/**

* @author phn

*/

@Controller

@RequestMapping("/user")

publicclassUserController{

@Resource

privateIUserService userService;

 

@ResponseBody

@RequestMapping(value="/login", method =RequestMethod.POST)

publicMap<String,Object> login(UserEntity user){

Map<String,Object> map =newHashMap<String,Object>();

System.out.println(user.toString());

boolean loginResult = userService.isExist(user);

map.put("loginResult", loginResult);

return map;

}

}

好啦，控制层写好了，下面测试，怎么测试呢，需要前台了，哈哈，ok，开始

看看我的项目的webapp文件夹

------------------------------------------------------------------

             

-------------------------------------------------------------------

建一个jsp，弄个简单的Ajax提交，通过传输Json数据来进行交互，这里是不是有点高大上，哈哈，前后端分离的路啊，不扯这个了，博主自己还不是很熟悉前后端分离的思想呢，慢慢来吧，少年，路还长着呢

<%@ page language="java"import="java.util.*" pageEncoding="UTF-8"%>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"

+ request.getServerName()+":"+ request.getServerPort()

+ path +"/";

%>

 

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<base href="<%=basePath%>">

 

<title>登录</title>

 

<metahttp-equiv="pragma"content="no-cache">

<metahttp-equiv="cache-control"content="no-cache">

<metahttp-equiv="expires"content="0">

<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">

<metahttp-equiv="description"content="This is my page">

 

<link rel="stylesheet" type="text/css" href="<%=basePath%>css/login.css">

<script type="text/javascript" src="<%=basePath%>js/jquery-1.8.2.min.js"></script>

<script type="text/javascript" src="<%=basePath%>js/md5.js"></script>

<script type="text/javascript" src="<%=basePath%>js/login.js"></script>

</head>

 

<body>

<div>

UserName:<inputtype="text"name="username"/><br/>

PassWord:<inputtype="password"name="password"/><br/>

<inputtype="submit"id="loginBtn"value="Login"/>

</div>

</body>

</html>

继续建一个js文件，login.js，代码如下，看到里面是不是进行了md5加密呀，这个是一个很简单的东西，你们可以不用那个md5加密，相信这个操作你们还是会的吧，就是去掉hex_md5($("input[name=password]").val());外面的那个hex_md5()就ok了，继续没有了呢

$(function(){

$("#loginBtn").click(function(){

console.log("login");

var username = $("input[name=username]").val();

var password = hex_md5($("input[name=password]").val());

var user ={

"username": username,

"password": password

};

$.ajax({

type :"post",

dataType :"json",

data : user,

contentType :"application/x-www-form-urlencoded;charset=UTF-8",

url :"user/login",

// 同步async: false,（默认是true）;

// 如上：false为同步，这个方法中的Ajax请求将整个浏览器锁死，

// 只有test.jsp执行结束后，才可以执行其它操作。

async :false,

success :function(data){

if(false== data.loginResult){

alert("用户名或者密码错误，请重新登录！");

}elseif(true== data.loginResult){

alert("登录成功！");

var indexUrl = window.location.protocol+"//"+window.location.host+window.location.pathname+"html/index.html";

window.location = indexUrl;

}

},

error :function(){

alert("服务器发生故障，请尝试重新登录！");

}

});

});

 

});

还有一个登录成功的页面，index.html,代码如下

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

 

<title>欢迎页面</title>

 

<metahttp-equiv="pragma"content="no-cache">

<metahttp-equiv="cache-control"content="no-cache">

<metahttp-equiv="expires"content="0">

<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">

<metahttp-equiv="description"content="This is my page">

 

</head>

 

<body>

恭喜你，登录成功！

</body>

</html>

 

好了，把项目部署到tomcat上面去，试试看

----------------------------------------------------------------------------------

      

------------------------------------------------------------------------------------

输入phn，123456，看看测试结果，

--------------------------------------------------------------------------------------

     

-------------------------------------------------------------------------------------

奥，显示下面这个呢，是什么原因呢？嘿嘿，这是我用了md5加密，后台是直接将md5加密的字符串存在数据库中的，但是我前面在数据库直接使用的密码是123456，所以在前台输入123456经过加密后的就不对了，看下面，这是后台打印的东西，

-------------------------------------------------------------------------------------

     

-------------------------------------------------------------------------------------

对应数据库中的数据是这样的

-------------------------------------------------------------------------------------

     

-------------------------------------------------------------------------------------

所以才会报错嘛，你看我试试输入用户名123和密码123，结果就对了，如下

-------------------------------------------------------------------------------------       

    

-------------------------------------------------------------------------------------

               

-------------------------------------------------------------------------------------

好啦，项目搭建就成功了，这里就到此为止了，睡觉！

剩下的坑就明天再填啦，记得再来哦，欢迎大家一起讨论哦

源码在GitHub上

地址：https://github.com/panhainan/PHN