maven构建springmvc 工程

之前的一个iteye账号彻底被忘记了，也许是休息了几个月的原因。里面也记录了很多关于java方面技术的学习的文章。这个是重新申请的账号，第二份工作也刚开始不久，默默的捡回很多东西，继续学习，加以记录。
关于maven里面建java web工程的有很多文章，由于是之前建的工程一直没有添加代码。今天搭建了一个spring mvc的工程。

1. 在pom.xml中添加spring jar包的配置。如果只是需要spring 相关的 ，这些就够了。
jar包,只需要写一个spring-webmvc 就可以把相关的jar 下载下来 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.0.2.RELEASE</version>
</dependency>
<!-- spring 的测试 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>3.1.1.RELEASE</version>
</dependency>
其他我需要的jar
<!-- jstl jar包 ,支持在jsp中的c标签 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>

<!-- servlet,支持写jsp -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
<scope>provided</scope>
</dependency>

<!-- jackson的jar包 -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.8</version>
<type>jar</type>
<scope>compile</scope>
</dependency>

<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-lgpl</artifactId>
<version>1.9.8</version>
<type>jar</type>
<scope>compile</scope>
</dependency>

<!-- commons lang -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.0</version>
</dependency>

2. 配置spring-demo-mvc.xml

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
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.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd">

<!-- 基于注解的配置 -->
<mvc:annotation-driven />

<!-- 在xml配置了这个标签后，spring可以自动去扫描base-pack下面或者子包下面的java文件，如果扫描到有@Component @Controller@Service等这些注解的类，则把这些类注册为bean 注意：如果配置了<context:component-scan>那么<context:annotation-config/>标签就可以不用再xml中配置了，因为前者包含了后者。 -->
<context:component-scan base-package="com.xyh.demo" />
<!-- 将在Controller返回的ModelAndView的基础上,加上目录前缀/WEB-INF/views/, 加后文件名称后缀.jsp,由此等待下个页面如/WEB-INF/views/showCats.jsp -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="contentType" value="text/html" />
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>

</beans>

3.配置 spring-demo.xml

<?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:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:util="http://www.springframework.org/schema/util" xmlns:task="http://www.springframework.org/schema/task"
xsi:schemaLocation="
          http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
          http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
          http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
          http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
          http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
          http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd
          http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd">

<!--引入的mvc文件的地址要根据自己的实际地址来写 -->
<import resource="classpath:META-INF/configuration/spring-demo-mvc.xml" />
</beans>


4.配置web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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" version="3.0">

<!-- 书写顺序 filter,listener, servlet -->
<display-name>demo</display-name>
<description>aybaylynDemo</description>

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:META-INF/configuration/spring-demo.xml
</param-value>
</context-param>


<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- Spring的log4j监听器 -->
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>

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

<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>

<!-- 字符集 过滤器 -->
<filter>
<filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>ASYNC</dispatcher>
</filter-mapping>

<!-- Spring view分发器,引入spring的配置文件 -->
<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*:META-INF/configuration/spring-demo.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 请求的方式 -->
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<!-- 错误页面配置 ,我只配置了404-->


<error-page>
<error-code>404</error-code>
<location>/WEB-INF/views/error/404.jsp</location>
</error-page>

</web-app>

如此，配置文件已经完成。

5.写controller

@Controller
@RequestMapping("/general")
public class GeneralController {

@RequestMapping(value = "hello")
public String hello(Model model) {
model.addAttribute("hello", "Hi,SpringMVC");
return "/general/hello";

}

}

6.写jsp

在WEB-INF下建立views文件夹，然后新建general文件夹，在下面写hello.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>
<body>
<h2> ${hello}</h2>
</body>
</html>

关于错误页面的这里不贴出。

然后打war包，放到tomcat 的webapps下，我的是demo.war  ， 浏览器访问http://localhost:8080/demo/general/hello.do 出现 Hi,SpringMVC

成功。