Spring框架搭建

使用普通的java工程或者web工程，需要下载Spring的相关jar包。

使用maven搭建，省去了下载jar包这一步。下面就使用maven来搭建一个Spring项目。

一、demo

1、demo1：

（1）pom添加相关依赖：

<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.demo</groupId>
	<artifactId>mavenspring</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<dependencies>
		
		<!-- Spring依赖 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>4.3.13.RELEASE</version>
			<!-- <exclusions> <exclusion> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> 
				</exclusion> </exclusions> -->
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>4.3.13.RELEASE</version>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>1.2.17</version>
		</dependency>
	</dependencies>
</project>

（2）在resources资源文件夹下创建两个文件：

log4j.properties为日志文件：

log4j.rootCategory=INFO, stdout

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %t %c{2}:%L - %m%n

log4j.category.org.springframework.beans.factory=DEBUG

applicationContext.xml为Spring的配置文件：在配置文件中完成注入

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    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.xsd">

	<bean id="ud" class="com.demo.dao.UserDao"></bean>
	<bean id="us" class="com.demo.service.UserService">
		<property name="userDao" ref="ud"></property>
	</bean>
	
</beans>

ref表示注入对象，基本类型用value。

（3）业务代码：

public class User {

	private int id;
	
	private String name;

	//省略set、get
}

public class UserDao {

	public User getUserById(int i) {
		
		User user = new User();
		user.setId(10);
		user.setName("zhangsan");
		return user;
	}	
	
}

public class UserService {

	private UserDao userDao;

	public UserDao getUserDao() {
		return userDao;
	}

	public void setUserDao(UserDao userDao) {
		this.userDao = userDao;
	}	
}

测试类：现在就不需要像以前一样去new对象了：

public class App {

	public static void main(String[] args) {
		ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
		
		//把IOC容器中的us对象取出来
		UserService service = context.getBean("us", UserService.class);
		
		User user = service.getUserDao().getUserById(10);
		
		System.out.println(user.getName());
	}
}

2、demo2：上面用的是配置文件的方法去注入容器，还有一种是注解的方法（具体见三讲解）：下面结合Spring整合hibernate来写一个实例：

<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.demo</groupId>
	<artifactId>mavenspringhibernate</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<dependencies>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>4.3.13.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>4.3.13.RELEASE</version>
			<scope>runtime</scope>
		</dependency>
		<dependency>
		    <groupId>org.springframework</groupId>
		    <artifactId>spring-orm</artifactId>
		    <version>4.3.13.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>4.3.13.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-core</artifactId>
			<version>4.3.11.Final</version>
		</dependency>
		
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>1.2.17</version>
		</dependency>
	</dependencies>
</project>

其中applicationContext.xml为总的配置文件：

<?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.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">
       <!-- 支持spring注解 --> 
    <context:component-scan base-package="com.demo"></context:component-scan>
	<!-- hibernate的配置 -->
	<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
		<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"></property>
		<property name="url" value="jdbc:oracle:thin:@172.16.130.35:1521:orcl"></property>
		<property name="username" value="wtyy1"></property>
		<property name="password" value="wtyy1"></property>
	</bean>
	<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSource"></property>
		<property name="packagesToScan" value="com.iflytek.domain"></property>
		<property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
                <prop key="hibernate.hbm2ddl.auto">create</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.format_sql">true</prop>
            </props>
		</property>
	</bean>
</beans>

import org.springframework.stereotype.Component;

//把user对象创建（默认的名字为：对象的名字小写），然后加入到容器中
@Entity
@Table(name="t_user")
@Component
public class User {

	private int id;
	
	private String name;

	@Id
	public int getId() {
		return id;
	}
	
	public void setId(int id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}
		
}

@Repository
public class UserDao {
	
	@Resource
	private SessionFactory sessionFactory;
	@Resource
	private User user;
	

	public void save() {
		
		Session session = sessionFactory.openSession();
		Transaction tx = session.beginTransaction();

		
		user.setId(1002);
		user.setName("测试");
		
		session.save(user);
		
		tx.commit();
		session.close();
		
	}
}

@Service
public class UserService {
	
	@Resource
	private UserDao userDao;

	public UserService() {
	}
	public UserService(UserDao userDao) {
		this.userDao = userDao;
		System.out.println("userservice construct run...");
	}
}

public class App {

	public static void main(String[] args) {
		
		
		ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
		
		UserDao bean = context.getBean(UserDao.class);
		
		bean.save();
	}
}

3、demo3：

（1）pom：

<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.demo</groupId>
  <artifactId>mymvc</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
<properties>
		<spring.version>4.3.13.RELEASE</spring.version>
	</properties>
	<dependencies>
		<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-webmvc</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-jdbc</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjrt</artifactId>
			<version>1.8.10</version>
		</dependency>
		<dependency>
			<groupId>aopalliance</groupId>
			<artifactId>aopalliance</artifactId>
			<version>1.0</version>
		</dependency>
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjweaver</artifactId>
			<version>1.8.10</version>
		</dependency>


		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-core</artifactId>
			<version>4.3.11.Final</version>
		</dependency>

		<!-- web jar -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.0.1</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.1.2</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet.jsp</groupId>
			<artifactId>javax.servlet.jsp-api</artifactId>
			<version>2.3.1</version>
			<scope>provided</scope>
		</dependency>

		<!-- jstl jar -->
		<!--
			   	* compile，缺省值，适用于所有阶段，会随着项目一起发布。 
			    * provided，类似compile，期望JDK、容器或使用者会提供这个依赖。如servlet.jar。 
			    * runtime，只在运行时使用，如JDBC驱动，适用运行和测试阶段。 
			    * test，只在测试时使用，用于编译和运行测试代码。不会随项目发布。 
			    * system，类似provided，需要显式提供包含依赖的jar，Maven不会在Repository中查找它。 
		 -->
		<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>

		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>1.2.17</version>
		</dependency>

		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.2.38</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-core</artifactId>
			<version>2.9.2</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>2.9.2</version>
		</dependency>
	</dependencies>
</project>

（2）spring.xml为spring配置文件： 

<?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:aop="http://www.springframework.org/schema/aop"
	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-4.3.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
<!-- 扫描除Controller外的注解 -->
	<context:component-scan base-package="com.demo">
		<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
	</context:component-scan>
	
</beans>

（3）springmvc.xml为springmvc的配置文件： 

<?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:mvc="http://www.springframework.org/schema/mvc"
	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/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/context 
		http://www.springframework.org/schema/context/spring-context-4.3.xsd">

	<mvc:annotation-driven/>

	<context:component-scan base-package="com.demo">
		<context:include-filter type="annotation"
			expression="org.springframework.stereotype.Controller" />
	</context:component-scan>
	
	<!-- view Resolvers -->
	
	<bean
		class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
		<property name="viewResolvers">
			<list>
				<bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />
				<!-- 配置前缀后缀 -->
				<bean
					class="org.springframework.web.servlet.view.InternalResourceViewResolver">
					<property name="prefix" value="/WEB-INF/jsp/" />
					<property name="suffix" value=".jsp" />
				</bean>
			</list>
		</property>
		<property name="defaultViews">
			<list>
			<!-- 配置返回json -->
				<bean
					class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" />
			</list>
		</property>
	</bean>
</beans>

（4）web.xml中引入上述两个配置文件，让tomcat在启动的时候扫描这两个文件： 

<?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"
	id="WebApp_ID" version="3.0">

	<!-- spring配置文件的路径 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring.xml</param-value>
	</context-param>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.js</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.css</url-pattern>
	</servlet-mapping>
	<servlet>
		<servlet-name>dispatcher</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:springmvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>dispatcher</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

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

</web-app>

 

@Controller
public class HomeController {

	@RequestMapping("/home")
	public String goHome() {
		System.out.println("hello");
		return "home";
	}
	
	@RequestMapping("/home1")
	@ResponseBody
	public List<Person> goHome1() {
		List<Person> list=new ArrayList<>();
		Person person=new Person();
		person.setId(1);
		person.setName("zs");
		list.add(person);
		person=new Person();
		person.setId(2);
		person.setName("李四");
		list.add(person);
		System.out.println("hello1");
		return list;
	}
}

前台：home.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript" src="assets/jquery.min.js"></script>
<script type="text/javascript">
$(function(){
	
	
	$.post("home1",function(data){
		$("#div1").html(data[1].id+data[1].name);
	})
})

</script>
</head>
<body>
	<div id="div1"></div>
	hello
</body>
</html>