maven创建webapp+Freemarker组件的实现-编程知识

maven创建webapp+Freemarker组件的实现

下载安装配置maven

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下载解压其中一个版本

开始配置环境变量

%MAVEN_HOME%

找到对应的路径

xxxx/bin

系统变量PATH中引入

%MAVEN_HOMOE%

win+r输入cmd后运行命令mvn - v，如图

创建项目

打开idea->新建项目->maven

可以自行修改组

com.xxxx

改为1.8

<properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target></properties>

导入依赖

    <dependency><groupId>org.freemarker</groupId><artifactId>freemarker</artifactId><version>2.3.23</version></dependency><!-- servlet-api的坐标依赖--><!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api --><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>3.1.0</version><scope>provided</scope></dependency>

导入组件

  <build><finalName>F01</finalName><pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --><plugins><plugin><!-- https://mvnrepository.com/artifact/org.eclipse.jetty/jetty-maven-plugin --><groupId>org.eclipse.jetty</groupId><artifactId>jetty-maven-plugin</artifactId><version>9.2.1.v20140609</version></plugin></plugins></pluginManagement></build>

创建servlet类

package com.xxxx;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;@WebServlet("/f001")
public class Freemarker001 extends HttpServlet {@Overrideprotected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {req.setAttribute("msg","Hello Freemarker!");req.getRequestDispatcher("template/f001.ftl").forward(req,resp);}
}

web.xml

<!DOCTYPE web-app PUBLIC"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN""http://java.sun.com/dtd/web-app_2_3.dtd" ><web-app><display-name>Archetype Created Web Application</display-name><servlet><servlet-name>freemarker</servlet-name><servlet-class>freemarker.ext.servlet.FreemarkerServlet</servlet-class><init-param><param-name>TemplatePath</param-name><param-value>/</param-value></init-param><init-param><param-name>default_encoding</param-name><param-value>UTF-8</param-value></init-param></servlet><servlet-mapping><servlet-name>freemarker</servlet-name><url-pattern>*.ftl</url-pattern></servlet-mapping></web-app>