Spring MVC（入門）

pom.xml 文件

<?xml version="1.0" encoding="UTF-8"?>

<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.zbj01</groupId>
    <artifactId>spring01</artifactId>
    <version>1.0</version>
    <packaging>war</packaging>
    <name>spring01</name>

    <!--依賴-->
    <dependencies>
        <!--Spring MVC-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.1.1.RELEASE</version>
        </dependency>
        <!--單元測試-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
　　<dependency>

   　　<groupId>org.projectlombok</groupId>
    　　<artifactId>lombok</artifactId>
   　　 <version>1.18.2</version>
   　　 <scope>provided</scope>
　　　</dependency>

       <!--servlet-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp.jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
    </dependencies>

    <build>
        <finalName>${project.artifactId}</finalName>
        <testSourceDirectory>src/test/java</testSourceDirectory>
        <sourceDirectory>src/main/java</sourceDirectory>
        <!-- 處理沒法加載資源配置文件-->
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                </includes>
            </resource>
        </resources>
        <!--配置jetty servlet服務器-->
        <plugins>
            <!--配置maven編譯插件-->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>9.4.12.v20180830</version>
                <configuration>
                    <stopKey>exit</stopKey>
                    <stopPort>8989</stopPort>
                    <scanIntervalSeconds>10</scanIntervalSeconds>
                    <reload>manual</reload>
                    <webAppConfig>
                        <contextPath></contextPath>
                    </webAppConfig>
                    <httpConnector>
                        <port>80</port>
                    </httpConnector>
                </configuration>
                <executions>
                    <execution>
                        <id>jetty-run</id>
                        <phase>test</phase>
                        <goals>
                            <goal>run</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

 

web.xml 文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
  <display-name>spring01</display-name>

  <!--配置springmvc servlet-->
  <servlet>
    <servlet-name>smvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
   <!--以下配置，指定修改springmvc文件的名稱和位置，classpath* resources 目錄-->
    <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>smvc</servlet-name>
    <url-pattern>*.do</url-pattern>
    <url-pattern>*.action</url-pattern>
  </servlet-mapping>

  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

創建resources目錄/ springmvc.xml 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/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"> <!-- 配置handerAdapter 適配器 --> <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/> <!-- 處理映射器 根據bean name 名稱進行查找 --> <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/> <!-- 配置視圖渲染器 --> <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <!-- 將視圖名 渲染後視圖的前綴 --> <property name="prefix" value="/WEB-INF/template/"/> <!-- 渲染後視圖的後綴 --> <property name="suffix" value=".jsp"/> </bean> <bean class="com.zbj.controller.UserController" name="/user.action"></bean> <!-- 引入其它配置文件 --> <import resource="user.xml"/> </beans>


編寫控制器類

package com.zbj.controller;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

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

public class UserController implements Controller {
    @Override
    public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
        ModelAndView mv = new ModelAndView("user");// 項目根目錄下 /WEB-INF/user.jsp
        mv.addObject("name","張三丰");
        mv.addObject("addr",new String[]{"鄭州","北京","天津"});
//        mv.setViewName("WEB-INF/show"); //找/WEB-INF/show.jsp 渲染 /WEB-INF/show.jsp
        return mv;
    }
}

創建template目錄/user.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><%@ page contentType="text/html;charset=UTF-8" language="java" %><html><head>    <title>Title</title></head><body><h3>${name}</h3><c:forEach items="${addr}" var="addr">    <p>${addr}</p></c:forEach></body></html>啓動服務器訪問 localhost/user.action