新建一个Maven项目,选择archetypes为maven-archetype-webapp,
相关的名称按个人习惯取,我这里取
Group Id:moonlit-group
Artifact Id:moonlit-artifact
然后一个新的maven webapp项目就见成了,你可以在Eclipse左侧的Project Explorer中看到一个项目名为moonlit-artifact,这个即是我们新间的项目的名称。
新建完项目之后会发现项目有个红叉,一直追溯过去会发现是webapp目录下的index.jsp下面有一个红叉,解决办法是:把tomcat的运行时环境添加进来。Project --> Properties --> Libraries --> add Library --> Server Runtime,把对应的tomcat添加进来就可以了。
此时虽然红叉没有了,但是感叹号还存在。这是因为项目引用的Jre版本和本季上装载的Java版本不一致造成的。
修改方式如下:
Project-->Properties-->Java Build Path-->Libraries->JRE System Library的版本改成本机搭载的Java版本。(这一步我没有改动)
把Project Facets中Java的版本改成本机Java的版本(我就该了这里感叹号就没有了)。
在我写这篇博客的时候,spring相关的最新版本是4.3.0.RELEASE,junit的最新版本是4.1.2,我们这里以最新版为例。
首先在pom.xml目录下添加一些相关的dependency,然后右键运行maven install,第一次可能需要一点时间下载dependencies里面的jar包。
pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>moonlit-group</groupId> <artifactId>moonlit-artifact</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>moonlit-artifact Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <springversion>4.3.0.RELEASE</springversion> <junitversion>4.12</junitversion> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junitversion}</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <!-- dependency> <groupId>org.springframework</groupId> <artifactId>spring-asm</artifactId> <version>3.1.4.RELEASE</version> <type>jar</type> <scope>compile</scope> </dependency --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jms</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-oxm</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${springversion}</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> <type>jar</type> <scope>compile</scope> </dependency> <dependency> <groupId>commons-collections</groupId> <artifactId>commons-collections</artifactId> <version>3.1</version> </dependency> <dependency> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> <version>1.1</version> </dependency> </dependencies> <build> <finalName>moonlit-artifact</finalName> </build> </project>
applicationContext.xml(放在WEB-INF/目录下):
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd 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 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"> <mvc:annotation-driven /> <context:component-scan base-package="com.moonlit.*" /> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
web.xml:
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <display-name></display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <!-- Spring的log4j监听器 --> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <!-- 核心控制器 --> <servlet> <servlet-name>book</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/applicationContext.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <servlet-mapping> <servlet-name>book</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
model:book.java
package com.moonlit.model; public class Book { private int id; private String name; private String author; public Book(){} public Book(int id, String name, String author) { super(); this.id = id; this.name = name; this.author = author; } 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; } public String getAuthor() { return author; } public void setAuthor(String author) { this.author = author; } }
Dao:bookDao.java
package com.moonlit.dao; import org.springframework.stereotype.Component; import com.moonlit.model.Book; @Component public class BookDao { //模拟数据库操作 public void add(Book book){ System.out.print("Add"); } public void update(Book book){ System.out.print("Update"); } }
Service:BookService.java
package com.moonlit.service; import javax.annotation.Resource; import org.springframework.stereotype.Component; import com.moonlit.dao.BookDao; import com.moonlit.model.Book; @Component public class BookService { private BookDao bookDao; public BookDao getBookDao() { return bookDao; } @Resource public void setBookDao(BookDao bookDao) { this.bookDao = bookDao; } public void add(Book book){ bookDao.add(book); } public void update(Book book){ bookDao.update(book); } }
controller:BookController.java
package com.moonlit.controller; import javax.annotation.Resource; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import com.moonlit.model.Book; import com.moonlit.service.BookService; @Controller @RequestMapping("/book.do") public class BookController { private BookService bookService; @RequestMapping(params = "method=add") public String add(Book book){ System.out.println("bookname:"+book.getName()); System.out.println("author:"+book.getAuthor()); bookService.add(book); return "success"; } @RequestMapping(params = "method=update") public String update(Book book) { bookService.update(book); return "success"; } public BookService getBookService() { return bookService; } @Resource public void setBookService(BookService bookService) { this.bookService = bookService; } }
index.jsp:
<html> <body> <h2>Add Book</h2> <form method="post" action="<%=request.getContextPath() %>/book.do?method=add"> bookname:<input type="text" name="name" id="name"> author:<input type="text" name="author" id="author"> <input type="submit" value="Add"> </form> </body> </html>
运行后可在Console中查看效果,比如,当我填写书名为harry potter,作者为moonlit之后,Console中会显示:
bookname:harry potter author:moonlit Add