搭建SpringMVC+Hibernate4+Spring3+Ajax+Maven项目

Posted 2020-09-15 yutingliuyl

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首先新建一个Maven项目。百度一下会有非常多实例，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版本号是1.7

以下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。例如以下，

<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/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>  
        <!-- 阿里巴巴公布版本号仓库 -->  
        <repository>  
            <id>alibaba-opensource</id>  
            <name>alibaba-opensource</name>  
            <url>http://code.alibabatech.com/mvn/releases/</url>  
            <layout>default</layout>  
        </repository>  
        <!-- 阿里巴巴快照版本号仓库 -->  
        <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号 -->
		<!-- <slf4j.version>1.7.10</slf4j.version> -->
		<log4j.version>1.2.17</log4j.version>
	</properties>
	<!-- maven打成war包放到tomcat文件夹下，就可以执行 -->
	<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測试包 -->
		<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，例如以下

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，例如以下。当中非常多多余的。能够依照自己须要的进行配置。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，当中有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能够猜出一部分。当中spring.xml和spring-hibernate.xml是能够合并成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-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></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>

接着我们開始建Spring.xml，例如以下，就不解释具体元素的意义了。直接看凝视吧，写的非常具体的，

<?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" 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-placeholder location="classpath:config.properties" />
 
	<!-- 自己主动扫描dao和service包(自己主动注入) -->
	<context:component-scan base-package="com.phn.dao,com.phn.service" />
 
</beans>

继续建spring-hibernate.xml，相同凝视也都比較具体了，大家细致看是能够看懂的。

<?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: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 -->
	<bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
		<property name="url" value="${jdbc_url}" />
		<property name="username" value="${jdbc_username}" />
		<property name="password" value="${jdbc_password}" />
 
		<!-- 初始化连接大小 -->
		<property name="initialSize" value="0" />
		<!-- 连接池最大使用连接数量 -->
		<property name="maxActive" value="20" />
		<!-- 连接池最大空暇 -->
		<property name="maxIdle" value="20" />
		<!-- 连接池最小空暇 -->
		<property name="minIdle" value="0" />
		<!-- 获取连接最大等待时间 -->
		<property name="maxWait" value="60000" />
 
		<!-- <property name="poolPreparedStatements" value="true" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="33" /> -->
 
		<property name="validationQuery" value="${validationQuery}" />
		<property name="testOnBorrow" value="false" />
		<property name="testOnReturn" value="false" />
		<property name="testWhileIdle" value="true" />
 
		<!-- 配置间隔多久才进行一次检測，检測须要关闭的空暇连接，单位是毫秒 -->
		<property name="timeBetweenEvictionRunsMillis" value="60000" />
		<!-- 配置一个连接在池中最小生存的时间。单位是毫秒 -->
		<property name="minEvictableIdleTimeMillis" value="25200000" />
 
		<!-- 打开removeAbandoned功能 -->
		<property name="removeAbandoned" value="true" />
		<!-- 1800秒。也就是30分钟 -->
		<property name="removeAbandonedTimeout" value="1800" />
		<!-- 关闭abanded连接时输出错误日志 -->
		<property name="logAbandoned" value="true" />
 
		<!-- 监控数据库 -->
		<!-- <property name="filters" value="stat" /> -->
		<property name="filters" value="mergeStat" />
	</bean>
 
	<!-- 配置hibernate session工厂 -->
	<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>
				<prop key="hibernate.dialect">${hibernate.dialect}</prop>
				<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
				<prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
			</props>
		</property>
 
		<!-- 自己主动扫描注解方式配置的hibernate类文件 -->
		<property name="packagesToScan">
			<list>
				<value>com.phn.model</value>
			</list>
		</property>
	</bean>
 
	<!-- 配置事务管理器 -->
	<bean name="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
		<property name="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:advice id="transactionAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<tx:method name="add*" />
			<tx:method name="save*" />
			<tx:method name="update*" />
			<tx:method name="modify*" />
			<tx:method name="edit*" />
			<tx:method name="delete*" />
			<tx:method name="remove*" />
			<tx:method name="repair" />
			<tx:method name="deleteAndRepair" />
 
			<tx:method name="get*" propagation="SUPPORTS" />
			<tx:method name="find*" propagation="SUPPORTS" />
			<tx:method name="load*" propagation="SUPPORTS" />
			<tx:method name="search*" propagation="SUPPORTS" />
			<tx:method name="datagrid*" propagation="SUPPORTS" />
            <!-- 这里是针对我写的推断用户是否存在数据库的方法的事务，假设不配置的话就会出现no session异常 --> 
			<tx:method name="is*" />
 
			<tx:method name="*" propagation="SUPPORTS" />
		</tx:attributes>
	</tx:advice>
	<aop:config>
		<aop:pointcut id="transactionPointcut" expression="execution(* com.phn.service..*Impl.*(..))" />
		<aop:advisor pointcut-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，有几个须要注意的地方最后讲，先把项目搭起来再说。技术分享

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="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-scan base-package="com.phn.controller" />
 
	<!-- <context:component-scan /> -->
	<!-- 扫描指定的包中的类上的注解，经常使用的注解有： -->
	<!-- @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 做了非常多事情，不包含加入自定义的拦截器 -->
	<mvc:annotation-driven />
 
	<!-- 拦截器 -->
	<!-- <mvc:interceptors> <bean class="com.phn.inteceptor" /> </mvc:interceptors> -->
 
	<!-- 方案一 （二选一）表示不正确静态资源如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:resources mapping="/images/**" location="/WEB-INF/images/" />
	<mvc:resources mapping="/css/**" location="/WEB-INF/css/" />
	<mvc:resources mapping="/js/**" location="/WEB-INF/js/" />
	<mvc:resources mapping="/html/**" location="/WEB-INF/html/" />
 
	<bean
		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
		<property name="messageConverters">
			<list>
				<bean
					class="org.springframework.http.converter.StringHttpMessageConverter">
					<property name="supportedMediaTypes">
						<list>
							<value>text/plain;charset=UTF-8</value>
						</list>
					</property>
				</bean>
			</list>
		</property>
	</bean>
 
 
	<!-- 启动Spring MVC的注解功能，完毕请求和注解POJO的映射 -->
	<bean
		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
		<property name="messageConverters">
			<list>
				<bean
					class="org.springframework.http.converter.StringHttpMessageConverter">
					<property name="supportedMediaTypes">
						<list>
							<value>text/plain;charset=UTF-8</value>
						</list>
					</property>
				</bean>
				<bean
					class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
					<property name="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点儿相同了，接下来開始编写server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。

大家先依照我对包命名的方式对自己的项目建好响应的包吧。这样高速好继续一下步骤。

先从实体開始吧。在model包中建一个UserEntity类，代码例如以下。这里使用了Java JPA，已经在Spring-Hibernate.xml里面配置了能够自己主动生成数据库表的对应代码了。

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
public class UserEntity {
	private int id;
	private String username;
	private String password;
	private boolean sex; // 默觉得0。0表示男，1表示女
 
	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	@Column(name = "UID", nullable = false, length = 9)
	public int getId() {
		return id;
	}
 
	public void setId(int id) {
		this.id = id;
	}
 
	@Column(name = "UNAME", nullable = false, length = 20)
	public String getUsername() {
		return username;
	}
 
	public void setUsername(String username) {
		this.username = username;
	}
 
	@Column(name = "UPASSWORD", nullable = false, length = 32)
	public String getPassword() {
		return password;
	}
 
	public void setPassword(String password) {
		this.password = password;
	}
 
	@Column(name = "USEX", nullable = false, length = 1)
	public boolean isSex() {
		return sex;
	}
 
	public void setSex(boolean sex) {
		this.sex = sex;
	}
 
	@Override
	public String toString() {
		return "User [ \nid : " + this.id + "\nusername : " + this.username
				+ "\npassword : " + this.password + "\nsex : " + this.sex
				+ " ]";
	}
 
}

接着開始编写数据訪问层（DAO层）接口。新建IUserDao接口。加入一下代码，这里就写了一个方法推断用户是否存在，用来验证用户登录。

package com.phn.dao;
 
import com.phn.model.UserEntity;
 
/**
 * @author phn
 */
public interface IUserDao {
	public boolean isExist(UserEntity user);
}

继续编写数据訪问层（DAO层）的实现类UserDaoImpl类，依赖注入使用的是@Resource注解，还能够用@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")
public class UserDaoImpl implements IUserDao {
	@Resource
	protected SessionFactory sessionFactory;
 
 
	public Session getSession() {
		return sessionFactory.getCurrentSession();
	}
 
	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}
	
	@Override
	public boolean 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) {
			return true;
		}
		return false;
	}
}

数据訪问层编写完了。我们測试看看方法能够用不咯

建一个UserDaoTest測试类，注意放在test资源包以下哈，代码例如以下，这里关于Junit+Spring測试使用注解引入单个和多个文件的差别留着后面讲，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，个人认为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
public class UserDaoTest {
	@Resource
	private IUserDao userDao;
 
	@Test
	public void testIsExist() {
		UserEntity user = new UserEntity();
		user.setUsername("phn");
		user.setPassword("123456");
		boolean result = userDao.isExist(user);
		System.out.println(result);
	}
 
}

測试结果应该是对的吧。不正确的话赶紧从前面開始看看什么地方错了，改正一下继续。看我的測试结果

继续编写业务逻辑层（Service层）接口。新建IUserService接口。代码例如以下，

package com.phn.service;
 
import com.phn.model.UserEntity;
 
/**
 * @author phn
 */
public interface IUserService {
	public boolean 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")
public class UserServiceImpl implements IUserService {
	@Resource
	private IUserDao userDao;
 
	@Override
	public boolean isExist(UserEntity user) {
		return userDao.isExist(user);
	}
 
}

业务逻辑层也ok了。我们測试一下，相同建一个UserServiceTest測试类，代码例如以下。事实上和dao层的代码差点儿相同，就是一些细节须要注意一下的话，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)
public class UserServiceTest {
	@Resource
	private IUserService userService;
	@Test
	public void testIsExist(){
		UserEntity user = new UserEntity();
		user.setUsername("phn");
		user.setPassword("123456");
		boolean result = userService.isExist(user);
		System.out.println(result);
	}
 
}

相同測试结果应该是对的吧，不正确的话赶紧从前面開始看看什么地方错了，改正一下继续，我的測试结果例如以下

以下就開始控制层（Controller层或者又叫Action层）的编码，新建一个UserController类。代码例如以下

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")
public class UserController{
	@Resource
	private IUserService userService;
	
	@ResponseBody
	@RequestMapping(value="/login", method = RequestMethod.POST)
	public Map<String,Object> login( UserEntity user){
		Map<String,Object> map = new HashMap<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，以下測试，怎么測试呢。须要前台了，哈哈，ok，開始

看看我的项目的webapp目录

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

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

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，博主自己还不是非常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>
 
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-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:<input type="text" name="username" /> <br/>
		PassWord:<input type="password" name="password" /><br/> 
		<input type="submit" id="loginBtn" value="Login" />
	</div>
</body>
</html>

继续建一个js文件，login.js，代码例如以下。看到里面是不是进行了md5加密呀，这个是一个非常easy的东西，你们能够不用那个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，这种方法中的Ajax请求将整个浏览器锁死，
			// 仅仅有test.jsp运行结束后，才干够运行其他操作。
			async : false,
			success : function(data) {
				if (false == data.loginResult) {
					alert("用户名或者密码错误，请又一次登录！");
				} else if (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("server发生问题。请尝试又一次登录！");
			}
		});
	});
 
});

另一个登录成功的页面。index.html,代码例如以下

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
 
<title>欢迎页面</title>
 
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-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。看看測试结果，

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

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

奥，显示以下这个呢。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。可是我前面在数据库直接使用的password是123456，所以在前台输入123456经过加密后的就不正确了。看以下，这是后台打印的东西，

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

相应数据库中的数据是这种

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

所以才会报错嘛，你看我试试输入username123和password123。结果就对了，例如以下

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

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

源代码在GitHub上

地址：https://github.com/panhainan/PHN

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