zoukankan      html  css  js  c++  java

  • maven 构建项目

    1. 构建简单的web项目
      • mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-webapp -DarchetypeArtifactId=maven-archetype-webapp
      • http://maven.apache.org/guides/mini/guide-ide-eclipse.html 把maven项目导入eclipse
      • mvn -Declipse.workspace=<path-to-eclipse-workspace> eclipse:add-maven-repo 这句话的作用应该是生成m2_pro环境变量，m2_pro就是使eclipse的项目找到maven的本地库
      • mvn eclipse:eclipse 就是让这个项目转为eclispses可以识别的项目（该命令是在只有一个Pom的情况下，如有多个pom请查看上面的链接）
      • 在maven的web项目中，要理解目录结构，首先所有文件是存放在src/main里，然后main文件夹可以分为java,resources,webapp目录，java是存放java文件，resources是存放各种配置文件，如log4j，webpp就是存放页面的地方
    • 构建简单的servlet项目
      • 首先要配置pom  
        <dependency>
	<groupId>org.jboss.spec.javax.servlet</groupId>
	<artifactId>jboss-servlet-api_3.0_spec</artifactId>
	<version>1.0.2.Final</version>
<dependency>
      • 调用mvn install之后，写一个简单的servlet 
        import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class SimpleServlet extends HttpServlet{

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		// TODO Auto-generated method stub
		PrintWriter out = resp.getWriter();
		out.println("Servlet Executed");
		out.flush();
		out.close();
	}

}
      • 然后是配置web.xml文件 
        	<servlet>
		<servlet-name>swfupload</servlet-name>
		<servlet-class>com.swf.SimpleServlet</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>swfupload</servlet-name>
		<url-pattern>/swfupload</url-pattern>
	</servlet-mapping>
      • 最后测试，在浏览器里输入localhost:8080/{project-name}/swfupload，会看到servlet excuted
    • maven spring mvc项目
      • 配置pom.xml 
        <dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-core</artifactId>
	<version>3.2.3.RELEASE</version>
</dependency>
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-web</artifactId>
	<version>3.2.3.RELEASE</version>
</dependency>
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-webmvc</artifactId>
	<version>3.2.3.RELEASE</version>
</dependency>
<!-- include spring @Transactional -->
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-tx</artifactId>
	<version>3.2.3.RELEASE</version>
</dependency>

<!-- standard.jar包 -->
<dependency>
	<groupId>taglibs</groupId>
	<artifactId>standard</artifactId>
	<version>1.1.2</version>
</dependency>

        详细解释：

      • 配置applicationContext.xml 
         1 <?xml version="1.0" encoding="UTF-8"?>  
 2 <beans  
 3     xmlns="http://www.springframework.org/schema/beans"  
 4     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
 5     xmlns:context="http://www.springframework.org/schema/context"  
 6     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
 7         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">  
 8     <import  
 9         resource="service.xml" />  
10     <import  
11         resource="dao.xml" />  
12 </beans>
      • 配置servlet.xml ,这个作用就是DispatchServlet的上下文，负责web mvc的controller 
         1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
 4     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
 5         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
 6     <context:component-scan base-package="com.controller" />
 7     <bean id="urlMapping"
 8         class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
 9     <bean
10         class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
11     <!-- <bean
12         class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor" /> -->
13 </beans>
      • 配置service.xml 
         1 <?xml version="1.0" encoding="UTF-8"?>  
 2 <beans  
 3     xmlns="http://www.springframework.org/schema/beans"  
 4     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
 5     xmlns:context="http://www.springframework.org/schema/context"  
 6     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
 7         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">  
 8     <context:component-scan  
 9         base-package="com.service" />  
10 <!-- <bean
11         class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor" /> -->
12 </beans>
      • 配置dao.xml 
         1 <?xml version="1.0" encoding="UTF-8"?>  
 2 <beans  
 3     xmlns="http://www.springframework.org/schema/beans"  
 4     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
 5     xmlns:aop="http://www.springframework.org/schema/aop"  
 6     xmlns:context="http://www.springframework.org/schema/context"  
 7     xmlns:tx="http://www.springframework.org/schema/tx"  
 8     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
 9         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd  
10         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd  
11         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">  
12     <context:component-scan  
13         base-package="com.dao" />  
14         <!-- <bean
15         class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor" /> -->
16 </beans>
      • 配置web.xml 
         1 <web-app>
 2     <display-name>Archetype Created Web Application</display-name>
 3     <servlet>
 4         <servlet-name>swfupload</servlet-name>
 5         <servlet-class>com.swf.SimpleServlet</servlet-class>
 6     </servlet>
 7     <servlet-mapping>
 8         <servlet-name>swfupload</servlet-name>
 9         <url-pattern>/swfupload</url-pattern>
10     </servlet-mapping>
11     <!-- 应用路径 -->
12     <context-param>
13         <param-name>webAppRootKey</param-name>
14         <param-value>spring.webapp.root</param-value>
15     </context-param>
16     <!-- Log4J 配置 -->
17     <!-- <context-param>
18         <param-name>log4jConfigLocation</param-name>
19         <param-value>classpath:log4j.xml</param-value>
20     </context-param>
21     <context-param>
22         <param-name>log4jRefreshInterval</param-name>
23         <param-value>60000</param-value>
24     </context-param> -->
25     <!--Spring上下文 配置  指出appliactionContext.xml的位置-->
26     <context-param>
27         <param-name>contextConfigLocation</param-name>
28         <param-value>classpath:applicationContext.xml</param-value>
29     </context-param>
30     <!-- 字符集 过滤器 -->
31     <filter>
32         <filter-name>CharacterEncodingFilter</filter-name>
33         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
34         <init-param>
35             <param-name>encoding</param-name>
36             <param-value>UTF-8</param-value>
37         </init-param>
38         <init-param>
39             <param-name>forceEncoding</param-name>
40             <param-value>true</param-value>
41         </init-param>
42     </filter>
43     <filter-mapping>
44         <filter-name>CharacterEncodingFilter</filter-name>
45         <url-pattern>/*</url-pattern>
46     </filter-mapping>
47     <!-- Spring 监听器 -->
48     <listener>
49         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
50     </listener>
51     <listener>
52         <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
53     </listener>
54     <!-- Spring 分发器 -->
55     <servlet>
56         <servlet-name>spring</servlet-name>
57         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
58         <init-param>
59             <param-name>contextConfigLocation</param-name>
60             <param-value>classpath:servlet.xml</param-value>
61         </init-param>
62     </servlet>
63     <servlet-mapping>
64         <servlet-name>spring</servlet-name>
65         <url-pattern>*.do</url-pattern>
66     </servlet-mapping>
67     <welcome-file-list>
68         <welcome-file>index.html</welcome-file>
69         <welcome-file>index.htm</welcome-file>
70         <welcome-file>index.jsp</welcome-file>
71         <welcome-file>default.html</welcome-file>
72         <welcome-file>default.htm</welcome-file>
73         <welcome-file>default.jsp</welcome-file>
74     </welcome-file-list>
75 </web-app>

      • 下面就是项目的目录结构
         
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  • 原文地址：https://www.cnblogs.com/popping57/p/3232506.html
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