<?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">
    <parent>
        <artifactId>springmvc</artifactId>
        <groupId>com.pingguo.mvc</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>springmvc-demo1</artifactId>
    <!--打包方式-->
    <packaging>war</packaging>
    <dependencies>
        <!-- SpringMVC -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.3.1</version>
        </dependency>
        <!-- 日志 -->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.2.3</version>
        </dependency>
        <!-- ServletAPI -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>
        <!-- Spring5和Thymeleaf整合包 -->
        <dependency>
            <groupId>org.thymeleaf</groupId>
            <artifactId>thymeleaf-spring5</artifactId>
            <version>3.0.12.RELEASE</version>
        </dependency>
    </dependencies>
</project>

<?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">
    <!-- 配置SpringMVC的前端控制器，對(duì)瀏覽器發(fā)送的請(qǐng)求統(tǒng)一進(jìn)行處理 -->
    <servlet>
        <servlet-name>springMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 通過(guò)初始化參數(shù)指定SpringMVC配置文件的位置和名稱(chēng) -->
        <init-param>
            <!-- contextConfigLocation為固定值 -->
            <param-name>contextConfigLocation</param-name>
            <!-- 使用classpath:表示從類(lèi)路徑查找配置文件，例如maven工程中的src/main/resources -->
            <param-value>classpath:springMVC.xml</param-value>
        </init-param>
        <!--
             作為框架的核心組件，在啟動(dòng)過(guò)程中有大量的初始化操作要做
            而這些操作放在第一次請(qǐng)求時(shí)才執(zhí)行會(huì)嚴(yán)重影響訪(fǎng)問(wèn)速度
            因此需要通過(guò)此標(biāo)簽將啟動(dòng)控制DispatcherServlet的初始化時(shí)間提前到服務(wù)器啟動(dòng)時(shí)
        -->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springMVC</servlet-name>
        <!--
            設(shè)置springMVC的核心控制器所能處理的請(qǐng)求的請(qǐng)求路徑
            /所匹配的請(qǐng)求可以是/login或.html或.js或.css方式的請(qǐng)求路徑
            但是/不能匹配.jsp請(qǐng)求路徑的請(qǐng)求
        -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

<?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/context http://www.springframework.org/schema/context/spring-context.xsd">
    <!-- 自動(dòng)掃描包 -->
    <context:component-scan base-package="com.pingguo.mvc.controller"></context:component-scan>
    <!-- 配置Thymeleaf視圖解析器 -->
    <bean id="viewResolver" class="org.thymeleaf.spring5.view.ThymeleafViewResolver">
        <property name="order" value="1"/>
        <property name="characterEncoding" value="UTF-8"/>
        <property name="templateEngine">
            <bean class="org.thymeleaf.spring5.SpringTemplateEngine">
                <property name="templateResolver">
                    <bean class="org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver">
                        <!-- 視圖前綴 -->
                        <property name="prefix" value="/WEB-INF/templates/"/>
                        <!-- 視圖后綴 -->
                        <property name="suffix" value=".html"/>
                        <property name="templateMode" value="HTML5"/>
                        <property name="characterEncoding" value="UTF-8" />
                    </bean>
                </property>
            </bean>
        </property>
    </bean>
</beans>

package com.pingguo.mvc.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class HelloController {
    // @RequestMapping注解：處理請(qǐng)求和控制器方法之間的映射關(guān)系
    // @RequestMapping注解的value屬性可以通過(guò)請(qǐng)求地址匹配請(qǐng)求，/表示的當(dāng)前工程的上下文路徑
    @RequestMapping(value = "/")
    public String index() {
        // 返回視圖名稱(chēng)
        return "index";
    }
    @RequestMapping("/target")
    public String toTarget() {
        return "target";
    }
}

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>首頁(yè)</title>
</head>
<body>
<h1>Hello World</h1>
<a th:href="@{/target}" rel="external nofollow" >訪(fǎng)問(wèn)目標(biāo)頁(yè)面 target.html </a>
</body>
</html>

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>target</title>
</head>
<body>
<h1>target</h1>
</body>
</html>