Spring MVC + TomCat 環境搭建
阿新 • • 發佈：2019-02-05
1.spring 需要的jar 包
spring框架配置
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <context-param> <param-name>contextConfigLocation</param-name> <!-- 應用上下文配置檔案 --> <param-value>/WEB-INF/spring-servlet.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 配置spring核心servlet --> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <!-- url-pattern配置為/，不帶檔案字尾，會造成其它靜態檔案(js，css等)不能訪問。如配為*.do，則不影響靜態檔案的訪問 --> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
2、應用上下文配置
spring-servlet.xml即配置用於開啟基於註解的springMVC功能，照web.xml中設定，路徑為WEB-INF下
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"> <!-- 啟動註解驅動的Spring MVC功能，註冊請求url和註解POJO類方法的對映--> <mvc:annotation-driven /> <!-- 啟動包掃描功能，以便註冊帶有@Controller、@Service、@repository、@Component等註解的類成為spring的bean --> <context:component-scan base-package="com.mvc.rest" /> <!-- 對模型檢視名稱的解析，在請求時模型檢視名稱新增前後綴 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/WEB-INF/view/" p:suffix=".jsp" /> </beans>
Demo例子
1、根據spring-servlet.xml配置的包路徑（com.mvc.rest）新建Constroller
package com.mvc.rest; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.servlet.ModelAndView; @Controller public class RestConstroller { public RestConstroller() {} @RequestMapping(value = "/login/{user}", method = RequestMethod.GET) public ModelAndView myMethod(HttpServletRequest request,HttpServletResponse response, @PathVariable("user") String user, ModelMap modelMap) throws Exception { modelMap.put("loginUser", user); return new ModelAndView("/login/hello", modelMap); } @RequestMapping(value = "/welcome", method = RequestMethod.GET) public String registPost() { return "/welcome"; } }
2、建jsp檢視
檢視路徑在spring-servlet.xml配置（/WEB-INF/view/），據上述RestConstroller 類，我們在WEB-INF下建立view目錄，在view下建立welcome.jsp及login/hello.jsp
welcome.jsp隨意，hello.jsp程式碼如下：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'hello.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
</head>
<body>
你好:<%=request.getAttribute("loginUser") %>，現在時間是<%= new Date() %>
</body>
</html>