Spring4 MVC Maven Hello 全注解方式

采用全注解的方式，来演示Hello world.

使用技术：

1.Spring 4.3.3.RELEASE
2.Maven 3
3.JDK 1.7
4.Eclipse 4.4
5.Boostrap 3

一，项目结构

二，Maven 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.devnp</groupId>
 <artifactId>Spring4MVCAnnotationMavenHelloWorld</artifactId>
 <packaging>war</packaging>
 <version>0.0.1-SNAPSHOT</version>

 <properties>
 <spring.version>4.3.3.RELEASE</spring.version>
 <jstl.version>1.2</jstl.version>
 <jdk.version>1.7</jdk.version>
 <servletapi.version>2.5</servletapi.version>
 <project.name>Spring4MVCAnnotationMavenHelloWorld</project.name>
 </properties>

 <dependencies>
 <!-- spring mvc -->
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-webmvc</artifactId>
 <version>${spring.version}</version>
 </dependency>
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>jstl</artifactId>
 <version>${jstl.version}</version>
 </dependency>
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>servlet-api</artifactId>
 <version>${servletapi.version}</version>
 <scope>provided</scope>
 </dependency>
 <dependency>
 <groupId>junit</groupId>
 <artifactId>junit</artifactId>
 <version>3.8.1</version>
 <scope>test</scope>
 </dependency>
 </dependencies>

 <build>
 <plugins>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-compiler-plugin</artifactId>
 <version>2.3.2</version>
 <configuration>
 <source>${jdk.version}</source>
 <target>${jdk.version}</target>
 </configuration>
 </plugin>
 <!-- embedded Jetty server, for testing -->
 <plugin>
 <groupId>org.eclipse.jetty</groupId>
 <artifactId>jetty-maven-plugin</artifactId>
 <version>9.2.11.v20150529</version>
 <configuration>
 <scanIntervalSeconds>10</scanIntervalSeconds>
 <webApp>
 <contextPath>/${project.name}</contextPath>
 </webApp>
 <httpConnector>
 <port>9999</port>
 </httpConnector>
 </configuration>
 </plugin>
 <!-- configure Eclipse workspace -->
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-eclipse-plugin</artifactId>
 <version>2.9</version>
 <configuration>
 <downloadSources>true</downloadSources>
 <downloadJavadocs>true</downloadJavadocs>
 <wtpversion>2.0</wtpversion>
 <wtpContextName>${project.name}</wtpContextName>
 </configuration>
 </plugin>
 </plugins>
 
 <finalName>${project.name}</finalName>
 </build>
</project>

三，控制器

package com.devnp.web.controller;

import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
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;

import com.devnp.web.service.HelloWorldService;


@Controller
public class WelcomeController {

 private final HelloWorldService helloWorldService;

 @Autowired
 public WelcomeController(HelloWorldService helloWorldService) {
 this.helloWorldService = helloWorldService;
 }

 @RequestMapping(value = "/", method = RequestMethod.GET)
 public String index(Map<String, Object> model) {

 model.put("title", helloWorldService.getTitle(""));
 model.put("msg", helloWorldService.getDesc());
 
 return "index";
 }

 @RequestMapping(value = "/hello/{name:.+}", method = RequestMethod.GET)
 public ModelAndView hello(@PathVariable("name") String name) {

 ModelAndView model = new ModelAndView();
 model.setViewName("index");
 
 model.addObject("title", helloWorldService.getTitle(name));
 model.addObject("msg", helloWorldService.getDesc());
 
 return model;

 }

}

四，页面


<%@ page language="java" contentType="text/html; charset=UTF-8"
 pageEncoding="UTF-8"%>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>

<spring:url value="/resources/css/bootstrap.min.css" var="bootstrapCss" />
<link href="${bootstrapCss}" rel="stylesheet" />

</head>
<body>
 <nav class="navbar navbar-inverse navbar-fixed-top">
 <div class="container">
 <div class="navbar-header">
 <a class="navbar-brand" href="#">${title}</a>
 </div>
 </div>
 </nav>

 <div class="jumbotron">
 <div class="container">
 <p>
 <c:if test="${not empty name}">
 Hello ${name}
 </c:if>

 <c:if test="${empty name}">
 Welcome Welcome!
 </c:if>
 </p>
 <p>
 <a class="btn btn-primary btn-lg" href="#" role="button">Learn
 more</a>
 </p>
 </div>
 </div>

 <div class="container">

 <div class="row">
 <div class="col-md-4">
 <h2>Heading</h2>
 <p>ABC</p>
 <p>
 <a class="btn btn-default" href="#" role="button">View details</a>
 </p>
 </div>
 <div class="col-md-4">
 <h2>Heading</h2>
 <p>ABC</p>
 <p>
 <a class="btn btn-default" href="#" role="button">View details</a>
 </p>
 </div>
 <div class="col-md-4">
 <h2>Heading</h2>
 <p>ABC</p>
 <p>
 <a class="btn btn-default" href="#" role="button">View details</a>
 </p>
 </div>
 </div>

 <hr>
 <footer>
 <p>© devnp.com 2016</p>
 </footer>
 </div>


 <spring:url value="/resources/js/bootstrap.min.js" var="bootstrapJs" />
 <spring:url value="/resources/js/jquery-1.12.4.min.js" var="jquery" />
 <script src="${bootstrapJs}"></script>
 <script src="${jquery}"></script>
</body>
</html>

五，配置

1.替换spring-web-config.xml配置


package com.devnp.web.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;

@EnableWebMvc //&amp;lt;mvc:annotation-driven /&amp;gt;
40Configuration
@ComponentScan({ "com.devnp.web" })
public class SpringWebConfig extends WebMvcConfigurerAdapter {
 
 @Override
 public void addResourceHandlers(ResourceHandlerRegistry registry) {
 registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
 }

@Bean
 public InternalResourceViewResolver viewResolver() {
 InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
 viewResolver.setViewClass(JstlView.class);
 viewResolver.setPrefix("/WEB-INF/views/jsp/");
 viewResolver.setSuffix(".jsp");
 return viewResolver;
 }
}

2.替换web.xml的配置


package com.devnp.web.servlet3;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

import com.devnp.web.config.SpringRootConfig;
import com.devnp.web.config.SpringWebConfig;

public class MyWebInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

@Override
protected Class<?>[] getServletConfigClasses() {
// TODO Auto-generated method stub
return new Class[] { SpringWebConfig.class };
}

@Override
protected String[] getServletMappings() {
// TODO Auto-generated method stub
return new String[] { "/" };
}

@Override
protected Class<?>[] getRootConfigClasses() {
// TODO Auto-generated method stub
return new Class[] { SpringRootConfig.class };
}

}