天天看點

在MyEclipse2014環境下搭建SpringMVC并實作HelloWorld

建立項目:

  File — New — Dynamic Web Project — 輸入項目名(這裡我命名為MySpringMVC-1) — Finish。

搭建環境:

  右鍵項目 — MyEclipse — Project Facets[Capabilities] — Install spring Facet:

  

  

在MyEclipse2014環境下搭建SpringMVC并實作HelloWorld

  

  點選Next:

  

  

在MyEclipse2014環境下搭建SpringMVC并實作HelloWorld

  

  取消所有勾選,點選Finish。

  

配置web.xml:

打開WebRoot/WEB-INF/web.xml,配置為如下形式:

web.xml:

<?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"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID" version="2.5">

    <!-- 配置 DispatcherServlet -->
    <servlet>
        <servlet-name>springDispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 該servlet在項目加載時就被建立,而不是等第一次請求時才建立 -->
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <!-- 可以應答所有請求 -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>
           

配置SpringMVC的配置檔案:

  在WebRoot/WEB-INF目錄下建立一個Spring Bean Definition,命名為<servlet-name>-servlet.xml,在我項目的web.xml中,<servlet-name>為springDispatcherServlet,是以此處配置檔案名為springDispatcherServlet-servlet.xml:

  

  

在MyEclipse2014環境下搭建SpringMVC并實作HelloWorld

  

  點選Next:

  

  

在MyEclipse2014環境下搭建SpringMVC并實作HelloWorld

  勾選context和mvc,點選Finish,然後打開springDispatcherServlet-servlet.xml,配置如下:

  

springDispatcherServlet-servlet.xml:

<?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"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">


    <!-- 指定要自動掃描的包 -->
    <context:component-scan base-package="com.MySpringMVC"></context:component-scan>

    <!-- 配置視圖解析器: 如何把 handler 方法傳回值解析為實際的實體視圖 -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

</beans>
           

  其中指定com.MySpringMVC下的子包和類中的注解将會被掃描到。

  

添加控制器類:

  建立包com.MySpringMVC.controller,并在包下建立類Hello.java,代碼如下:

Hello.java:

package com.MySpringMVC.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class Hello {

    /**
     * 1. 使用 @RequestMapping 注解來映射請求的 URL
     * 2. 傳回值會通過視圖解析器解析為實際的實體視圖, 對于 InternalResourceViewResolver 視圖解析器, 會做如下的解析:
     * 通過 prefix + returnVal + 字尾 這樣的方式得到實際的實體視圖, 然會做轉發操作
     * 
     * /WEB-INF/views/success.jsp
     * 
     * @return
     */
    @RequestMapping("/helloworld")
    public String hello(){
        System.out.println("hello world!");
        return "success";
    }
}
           

建立頁面:

  現在我們來建立頁面測試一下:

  

index.jsp: (其中超連結位址“helloworld”對應Hello.java中的“@RequestMapping(“/helloworld”)”)

<%@ 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%>" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" >

        <title>My JSP 'index.jsp' starting page</title>
        <meta http-equiv="pragma" content="no-cache">
        <meta http-equiv="cache-control" content="no-cache">
        <meta http-equiv="expires" content="0">    
        <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
        <meta http-equiv="description" content="This is my page">
      </head>

      <body>
        <a href="helloworld" target="_blank" rel="external nofollow" >Hello World!</a>
      </body>
    </html>
           

/WEB-INF/views/success.jsp:

<%@ 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%>" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" >

    <title>My JSP 'success.jsp' starting page</title>

    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">

  </head>

  <body>
    <h4>Hello world!</h4>
  </body>
</html>
           

運作測試:

  運作項目:

  

  

在MyEclipse2014環境下搭建SpringMVC并實作HelloWorld

  

  點選,跳轉到了WEB-INF/views/success.jsp:

  

  

在MyEclipse2014環境下搭建SpringMVC并實作HelloWorld

  

  并且在控制台輸出了hello world!:

  

  

在MyEclipse2014環境下搭建SpringMVC并實作HelloWorld

  

  

繼續閱讀