前言:
最近没什么事做,搭个框架写成博客记录下来,拉通一下之前所学知识.
话不多说,我们直接步入正题。
准备工作:
1/安装并配置java运行环境
2/数据库的安装配置(Mysql)
3/安装并配置服务器(Tomcat)
4/Maven
5/ IntelliJIDEA的安装配置(本人使用的主要软件是IntelliJIDEA,没用eclipse什么的)
6/ 使用IntelliJIDEA创建一个web app项目。
貌似就这些了吧
导包
不同于以往的导包,由于我们创建的是maven的webapp项目,所以现在只需配置下pomxml这个配置文件,系统会自动到maven的中央仓库去下载相应的包.
本人的pom.xml配置文件如下(都写有说明的哈):
<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>XRog</groupId> <artifactId>ssh</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>ssh Maven Webapp</name> <url>http://maven.apache.org</url> <!-- 本人将配置包的版本信息都统一放入此处,方便以后管理--> <properties> <springVersion>4.3.1.RELEASE</springVersion> <hibernateVersion>4.3.5.Final</hibernateVersion> <jstlVersion>1.2</jstlVersion> <taglibVersion>1.1.2</taglibVersion> <servletVersion>3.0-alpha-1</servletVersion> <jsonVersion>1.9.13</jsonVersion> <jacksonVersion>2.5.0</jacksonVersion> <mysqlVersion>6.0.3</mysqlVersion> <c3p0Version>0.9.1.2</c3p0Version> <log4jVersion>1.2.17</log4jVersion> <fileuploadVersion>1.3.1</fileuploadVersion> <lombokVersion>1.16.10</lombokVersion> </properties> <dependencies> <!-- 单元测试 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!-- spring--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>${springVersion}</version> </dependency> <!-- spring web + spring MVC--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${springVersion}</version> </dependency> <!-- hibernate配置--> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>${hibernateVersion}</version> </dependency> <!-- hibernate 缓存, 视情况添加--> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-ehcache</artifactId> <version>${hibernateVersion}</version> </dependency> <!-- jsp页面使用的jstl支持--> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>${jstlVersion}</version> </dependency> <dependency> <groupId>taglibs</groupId> <artifactId>standard</artifactId> <version>${taglibVersion}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>${servletVersion}</version> <scope>provided</scope> </dependency> <!-- DataBase数据库连接 mysql包--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysqlVersion}</version> </dependency> <!-- 数据库连接池--> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>${c3p0Version}</version> </dependency> <!-- json数据 使springMVC可以返回json值 ,视情况添加--> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>${jsonVersion}</version> </dependency> <!-- Jackson可以轻松的将Java对象转换成json对象和xml文档,同样也可以将json、xml转换成Java对象--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>${jacksonVersion}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>${jacksonVersion}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>${jacksonVersion}</version> </dependency> <!-- log4j配置, 视情况添加--> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4jVersion}</version> </dependency> <!--文件 上传--> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>${fileuploadVersion}</version> </dependency> <!-- lombok插件导包--> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>${lombokVersion}</version> <scope>provided</scope> </dependency> </dependencies> <build> <finalName>ssh</finalName> </build> </project>
OK,配置后运行下maven,就会自动向中央仓库下载相应的包啦!(这个就不多说了)。
SpringMVC配置
我现在在这里把我配置后的结构拿出来给你们看下
我们先配置下SpringMVC的配置:resources/META-INF/spring-mvc.xml
<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-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd"> <!-- 启动注解驱动的spring MVC功能,注册请求url和注解POJO类方法的映射--> <mvc:annotation-driven /> <!-- 对模型视图名称的解析,在请求时模型视图名称添加前后缀 --> <context:component-scan base-package="com.ssh" /> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="views/" /> <!-- 前缀 --> <property name="suffix" value=".jsp" /> <!-- 后缀 --> </bean> <!--这里是对静态资源的映射--> <mvc:resources mapping="/js/**" location="/resources/js/" /> <mvc:resources mapping="/css/**" location="/resources/css/" /> <mvc:resources mapping="/img/**" location="/resources/img/" /> </beans>
好了,我们现在修改下web.xml这个配置文件,完善下SpringMVC的配置, web.xml配置如下:
<?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"> <!-- 地址为http://localhost:8080/ 显示的默认网页--> <welcome-file-list> <welcome-file>/index.jsp</welcome-file> </welcome-file-list> <!-- spring MVC config start--> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <!-- 此处指向的的是SpringMVC的配置文件 --> <param-value>classpath:META-INF/spring-mvc.xml</param-value> </init-param> <!--配置容器在启动的时候就加载这个servlet并实例化--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- spring MVC config end--> </web-app>
OK,SpringMVC配置完成,现在我们进行一下测试吧
在controller层新建一个MainController,内容如下
package com.ssh.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; /** * Created by XRog * On 2/1/2017.12:36 AM */ @Controller public class MainController { @RequestMapping(value = "test", method = RequestMethod.GET) public String test(){ // 实际返回的是views/test.jsp ,spring-mvc.xml中配置过前后缀 return "test"; } }
test.jsp网页如下:
<html> <body> <center> <h2 style="color: #ff261a;">this is my test page!</h2> </center> </body> </html>
重启Tomcat服务器, 然后浏览器访问http://localhost/test如下图所示:
PS: Tomcat默认端口是8080,我更改了端口号,如若你们为更改,正确的访问地址是localhost:8080/test
OK,成功访问。
SpringMVC+Spring整合
这个就十分简单了, 配置applicationContext.xml这个Spring的配置文件如下:
<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-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd"> <!-- 自动扫描 --> <context:component-scan base-package="com.ssh"> <!-- 扫描时跳过 @Controller 注解的JAVA类(控制器) --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> </beans>
完善web.xml配置文件如下:
<?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"> <!-- 地址为http://localhost:8080/ 显示的默认网页--> <welcome-file-list> <welcome-file>/index.jsp</welcome-file> </welcome-file-list> <!--加载Spring的配置文件到上下文中去--> <context-param> <param-name>contextConfigLocation</param-name> <param-value> classpath:META-INF/applicationContext.xml </param-value> </context-param> <!-- spring MVC config start--> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <!-- 此处指向的的是SpringMVC的配置文件 --> <param-value>classpath:META-INF/spring-mvc.xml</param-value> </init-param> <!--配置容器在启动的时候就加载这个servlet并实例化--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- spring MVC config end--> <!-- Spring监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 字符集过滤 --> <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> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
web.xml配置文件中更改了三处:引入Spring配置文件 Spring的监听器 以及 字符集过滤
OK,Spring+SpringMVC配置完成,下面我们开始测试:
在service写一个TestServiceImpl实现TestService接口并实现其test()方法, 代码如下:
package com.ssh.service.impl; import com.ssh.service.TestService; import org.springframework.stereotype.Service; /** * Created by XRog * On 2/1/2017.12:58 AM */ @Service public class TestServiceImpl implements TestService { public String test() { return "test"; } }
PS:这里注意写@Service注解
MainController控制器更改如下:
package com.ssh.controller; import com.ssh.service.TestService; 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; /** * Created by XRog * On 2/1/2017.12:36 AM */ @Controller public class MainController { @Autowired private TestService testService; @RequestMapping(value = "test", method = RequestMethod.GET) public String test(){ // 实际返回的是views/test.jsp ,spring-mvc.xml中配置过前后缀 return "test"; } @RequestMapping(value = "springtest", method = RequestMethod.GET) public String springTest(){ return testService.test(); } }
控制器这里我们运用了Spring的依赖注入自动装配。
在浏览器中输入地址http://localhost/springtest调用springtest方法
yes,成功返回,说明我们之前的配置没问题
Spring+SpringMVC+hibernate整合
好了,现在就缺hibernate这个框架了。。 我先给大家看些我搭建好之后的结构图吧
我们想来编写config.properties这个配置文件,里面存放的是hibernate的一些配置
#database connection config jdbc.driver = com.mysql.jdbc.Driver jdbc.url = jdbc:mysql://?????:3306/ssh?useUnicode=true&characterEncoding=utf-8 jdbc.username = root jdbc.password = ??? #hibernate config hibernate.dialect = org.hibernate.dialect.MySQLDialect hibernate.show_sql = true hibernate.format_sql = true hibernate.hbm2ddl.auto = update
这里连接数据库的参数由于我是连接我晚上的数据库,因此我数据库地址和密码打了“???”,你们连接时改成自己本地的就OK了
下面配置hibernate,这里我为了方便,就直接写进applicationContext.xml里面。配置后的applicationContext.xml如下:
<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-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd"> <!--********************************************配置Spring***************************************--> <!-- 自动扫描 --> <context:component-scan base-package="com.ssh"> <!-- 扫描时跳过 @Controller 注解的JAVA类(控制器) --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!--********************************************配置hibernate********************************************--> <!--扫描配置文件(这里指向的是之前配置的那个config.properties)--> <context:property-placeholder location="classpath:/config.properties" /> <!--配置数据源--> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="${jdbc.driver}" /> <!--数据库连接驱动--> <property name="jdbcUrl" value="${jdbc.url}" /> <!--数据库地址--> <property name="user" value="${jdbc.username}" /> <!--用户名--> <property name="password" value="${jdbc.password}" /> <!--密码--> <property name="maxPoolSize" value="40" /> <!--最大连接数--> <property name="minPoolSize" value="1" /> <!--最小连接数--> <property name="initialPoolSize" value="10" /> <!--初始化连接池内的数据库连接--> <property name="maxIdleTime" value="20" /> <!--最大空闲时间--> </bean> <!--配置session工厂--> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="packagesToScan" value="com.ssh.entity" /> <property name="hibernateProperties"> <props> <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop> <!--hibernate根据实体自动生成数据库表--> <prop key="hibernate.dialect">${hibernate.dialect}</prop> <!--指定数据库方言--> <prop key="hibernate.show_sql">${hibernate.show_sql}</prop> <!--在控制台显示执行的数据库操作语句--> <prop key="hibernate.format_sql">${hibernate.format_sql}</prop> <!--在控制台显示执行的数据哭操作语句(格式)--> </props> </property> </bean> <!-- 事物管理器配置 --> <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> </beans>
OK,到了这里,配置结束。下面进入测试阶段
实体类(entity):
package com.ssh.entity; import lombok.Data; import javax.persistence.*; /** * Created by XRog * On 2/2/2017.2:03 PM */ @Data @Entity @Table(name = "Person") public class Person { @Id @GeneratedValue private Long id; @Column(name = "created") private Long created = System.currentTimeMillis(); @Column(name = "username") private String username; @Column(name = "address") private String address; @Column(name = "phone") private String phone; @Column(name = "remark") private String remark; }
PS:我这里用了一个@Data注解,此注解会自动生成get方法,set方法,toString方法等一系列方法,功能十分强大,不过需要安装插件以及导包, 有兴趣的可以百度下
当然,你也可以手动编写get/set/构造方法。
数据库访问层(repository):
package com.ssh.repository; import java.io.Serializable; import java.util.List; /** * Created by XRog * On 2/2/2017.2:28 PM */ public interface DomainRepository<T,PK extends Serializable>{ T load(PK id); T get(PK id); List<T> findAll(); void persist(T entity); PK save(T entity); void saveOrUpdate(T entity); void delete(PK id); void flush(); }
package com.ssh.repository; import com.ssh.entity.Person; /** * Created by XRog * On 2/2/2017.2:25 PM */ public interface PersonRepository extends DomainRepository<Person,Long> { }
package com.ssh.repository.impl; import com.ssh.repository.PersonRepository; import com.ssh.entity.Person; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Repository; import java.util.List; /** * Created by XRog * On 2/2/2017.2:30 PM */ @Repository public class PersonRepositoryImpl implements PersonRepository { @Autowired private SessionFactory sessionFactory; private Session getCurrentSession() { return this.sessionFactory.openSession(); } public Person load(Long id) { return (Person)getCurrentSession().load(Person.class,id); } public Person get(Long id) { return (Person)getCurrentSession().get(Person.class,id); } public List<Person> findAll() { return null; } public void persist(Person entity) { getCurrentSession().persist(entity); } public Long save(Person entity) { return (Long)getCurrentSession().save(entity); } public void saveOrUpdate(Person entity) { getCurrentSession().saveOrUpdate(entity); } public void delete(Long id) { Person person = load(id); getCurrentSession().delete(person); } public void flush() { getCurrentSession().flush(); } }
PS:我这里显示写了一个比较通用的接口,其他所有接口皆继承此接口, 再编写实现类
注意:我这里写的session产生是调用的SessionFactory的openSession()这个方法。之前使用getCurrentSession()一直报错,后来百度了一下才知道,hibernate3版本可以使用getCurrentSession()来创建session,而hibernate4版本则不行。
服务层(service):
package com.ssh.service; import com.ssh.entity.Person; /** * Created by XRog * On 2/2/2017.2:39 PM */ public interface PersonService { Long savePerson(); }
package com.ssh.service.impl; import com.ssh.entity.Person; import com.ssh.repository.PersonRepository; import com.ssh.service.PersonService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; /** * Created by XRog * On 2/2/2017.2:40 PM */ @Service public class PersonServiceImpl implements PersonService { @Autowired private PersonRepository personRepository; public Long savePerson() { Person person = new Person(); person.setUsername("XRog"); person.setPhone("18381005946"); person.setAddress("chenDu"); person.setRemark("this is XRog"); return personRepository.save(person); } }
控制层(controller):
package com.ssh.controller; import com.ssh.entity.Person; import com.ssh.service.PersonService; import com.ssh.service.TestService; 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; /** * Created by XRog * On 2/1/2017.12:36 AM */ @Controller public class MainController { @Autowired private PersonService personService; @RequestMapping(value = "savePerson", method = RequestMethod.GET) @ResponseBody public String savePerson(){ personService.savePerson(); return "success!"; } }
OK,编写完毕,我们重启下服务器然后测试:
我们在看下数据库,跟我们插入的数据对比下
OK,测试完毕,十分成功
以上就是本文的全部内容,希望本文的内容对大家的学习或者工作能带来一定的帮助,同时也希望多多支持呐喊教程!
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