springMVC入門一
阿新 • • 發佈：2018-09-13
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一、準備工作
eclipse使用maven搭建項目，項目名稱為HelloSpringMVC
二、搭建好的項目如下：
項目介紹：實現簡單的helloworld
三、具體代碼
controller類：HelloWorldController
package com.cn.springmvc; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; @Controllerpublic class HelloWorldController { @RequestMapping("/hello") //訪問http://localhost:8080/HelloSpringMVC/hello public String hello(Model model){ model.addAttribute("greeting","hello Spring MVC"); //jsp頁面接收 ${greeting} return "helloworld"; //跳轉到 helloworld.jsp } }
jsp頁面：helloworld.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Spring4 MVC -HelloWorld</title> </head> <body> <h1>${greeting}</h1> </body> </html>
web項目配置：web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" 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_2_5.xsd"> <display-name>HelloSpringMVC</display-name> <servlet> <!-- 加載springmvc配置: 1、這裏的servlet-name默認指向“spring-mvc-servlet.xml” 2、手動指定：<init-param> --> <servlet-name>spring-mvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc-servlet.xml</param-value> </init-param> --> <!-- <load-on-startup>：容器啟動時，加載這個servlet的順序 取值：0，1，2，3... 數字越小，越先加載 --> <load-on-startup>1</load-on-startup> </servlet> <!-- url-pattern:servlet訪問地址url配置 /* path.endsWith("/*") *. path.starsWith("*.") / path.equals("/") 其他 --> <servlet-mapping> <servlet-name>spring-mvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 加載其他的xml配置 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/root-context.xml</param-value> </context-param> <!-- Spring 監聽器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> </web-app>
springMVC配置：spring-mvc-servlet.xml，root-context.xml為空，可不寫
<?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: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-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd"> <!-- 自動掃描註解 --> <context:component-scan base-package="com.cn.springmvc"/> <!-- 處理靜態資源，如img等，這類資源不通過DispatcherServlet轉發，由容器自己處理 <mvc:default-servlet-handler default-servlet-name="所使用的Web服務器默認使用的Servlet名稱" /> 對靜態資源文件的訪問 <mvc:resources mapping="/img/**" location="/img/" /> --> <mvc:default-servlet-handler /> <!-- <mvc:resources /> --> <!-- 使用註解時需要配置這個，springMVC為@Controller分發請求所必須的 --> <mvc:annotation-driven/> <!-- 視圖控制器： 如果返回的是視圖邏輯名稱，如success，那麽視圖解析器就必須配置 如果返回的是真實視圖名稱，如/index.jsp，那麽視圖解析器為可選配置 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/pages/" /> <!-- 前綴 --> <property name="suffix" value=".jsp" /> <!-- 後綴 --> </bean> </beans>
pom.xml配置
<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.cn</groupId> <artifactId>HelloSpringMVC</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>HelloSpringMVC Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!-- Servlet Library --> <!-- http://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> <!-- Spring dependencies --> <!-- http://mvnrepository.com/artifact/org.springframework/spring-core --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>4.1.4.RELEASE</version> </dependency> <!-- http://mvnrepository.com/artifact/org.springframework/spring-web --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>4.1.4.RELEASE</version> </dependency> <!-- http://mvnrepository.com/artifact/org.springframework/spring-webmvc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.1.4.RELEASE</version> </dependency> </dependencies> <build> <finalName>HelloSpringMVC</finalName> </build> </project>
四、訪問：http://localhost:8080/HelloSpringMVC/hello
springMVC入門一