Spring4 MVC HelloWorld 注释/JavaConfig为示例,一步一步以简单的方式学习Spring4 MVC 的注解,项目设置,代码,部署和运行。

我们已经使用XML配置开发了一个Hello World Web应用程序。但是,XML不是配置Spring应用程序的唯一途径。或者,我们可以使用Java配置来配置应用程序.

我们将再次创建一个Hello world的例子,但这个时候我们使用Java配置。 我们将删除上面提到的XML文件,并通过它们对应的Java替换这些XML配置。

目录结构:

访问路径是:http://localhost:8080/gugua5/

包名:springmvc

HelloController.java

package springmvc.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.ui.ModelMap; @Controller
@RequestMapping(value="/")
public class HelloWorldController { @RequestMapping(method=RequestMethod.GET)
public String sayHello(ModelMap model)
{ model.addAttribute("greeting", "hello world from spring mvc 4");
return "hello_say";
} @RequestMapping(value="/helloagain", method=RequestMethod.GET)
public String sayHelloAgain(ModelMap model)
{
model.addAttribute("greeting", "hello world again, spring mvc 4");
return "hello_say";
}
}

  

配置jsp视图路径,以及包下的controller/bean等自动引入,webmvc开启

package springmvc.configuration;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc; import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView; @Configuration
@EnableWebMvc
@ComponentScan(basePackages="springmvc")
public class HelloWorldConfiguration { @Bean
public ViewResolver viewResolver()
{
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/views/");
viewResolver.setSuffix(".jsp");
return viewResolver;
} }

  

初始化WebApplicationInitializer

可以用AbstractAnnotationConfigDispatcherServletInitializer 来替代WebApplicationInitializer

package springmvc.configuration;

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

public class HelloWorldInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

	@Override
protected Class<?>[] getRootConfigClasses() {
// TODO Auto-generated method stub
return new Class[] { HelloWorldConfiguration.class };
} @Override
protected Class<?>[] getServletConfigClasses() {
// TODO Auto-generated method stub
return null;
} @Override
protected String[] getServletMappings() {
// TODO Auto-generated method stub
return new String [] { "/" };
} }

  

jsp:

<%@ page language="java" contentType="text/html; charset=utf-8"  pageEncoding="utf-8"%>
<%@ page isELIgnored="false" %>
<!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>javaconfiguration</title>
</head>
<body> ${greeting} </body>
</html>

  

我们来说一说pom.xml配置

以 Spring Java为基础的配置取决于Servlet 3.0 的API, 因此,我们需要包含的依赖在 pom.xml 中。

<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>gugua4</groupId>
<artifactId>gugua5</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>gugua5 Maven Webapp</name>
<url>http://maven.apache.org</url> <properties>
<springVersion>4.3.5.RELEASE</springVersion>
<hibernate.validator>5.1.2.Final</hibernate.validator> <!-- hibernate.validator -->
<javax.validation>1.1.0.Final</javax.validation> <!-- JSR303 的验证注解 -->
<mysqlVersion>5.0.11</mysqlVersion>
<commonsDbcpVersion>1.4</commonsDbcpVersion>
<aspectjweaverVersion>1.8.13</aspectjweaverVersion>
<commonsLoggingVersion>1.2</commonsLoggingVersion>
</properties> <dependencies> <!-- spring-test支持 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency> <!-- spring模块库 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${springVersion}</version>
</dependency> <!-- (aop)@Aspect注解及代理 -->
<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/cglib/cglib-nodep -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib-nodep</artifactId>
<version>2.1_3</version>
</dependency> <!-- 依赖的持久化类库 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>3.0.5.RELEASE</version>
</dependency> <!-- io流/上传类插件 -->
<!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.2</version>
</dependency> <!-- 连接池 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>${commonsDbcpVersion}</version>
</dependency> <!-- 公共基础类(字符处理,数组,日期,范围) -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.0</version>
</dependency> <!-- jsp依赖的web模块库 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency> <!-- servlet(HttpServletRequest,HttpServletResponse) -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<!--
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
-->
</dependency> <!-- jsr303 validation dependencies/ JSR303 的验证注解-->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>${javax.validation}</version>
</dependency>
<!-- hibernate validation 数据验证-->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>${hibernate.validator}</version>
</dependency> </dependencies> <build>
<!-- javaConfig配置 -->
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<!-- jsp目录 -->
<warSourceDirectory>src/main/webapp</warSourceDirectory>
<warName>gugua5</warName>
<!-- 取消xml配置:web.xml -->
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<finalName>gugua5</finalName>
</build> </project>

  

重点是此段代码:

<build>
<!-- javaConfig配置 -->
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<!-- jsp目录 -->
<warSourceDirectory>src/main/webapp</warSourceDirectory>
<warName>gugua5</warName>
<!-- 取消xml配置:web.xml -->
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<finalName>gugua5</finalName>
</build>

  

spring mvc:练习:javaConfig配置和注解的更多相关文章

  1. Spring MVC 4常用的那些注解

    Spring从2.5版本开始在编程中引入注解,用户可以使用@RequestMapping, @RequestParam, @ModelAttribute等等这样类似的注解.到目前为止,Spring的版 ...

  2. Spring学习 6- Spring MVC (Spring MVC原理及配置详解)

    百度的面试官问:Web容器,Servlet容器,SpringMVC容器的区别: 我还写了个文章,说明web容器与servlet容器的联系,参考:servlet单实例多线程模式 这个文章有web容器与s ...

  3. [转]Spring MVC 4常用的那些注解

    Spring从2.5版本开始在编程中引入注解,用户可以使用@RequestMapping, @RequestParam, @ModelAttribute等等这样类似的注解.到目前为止,Spring的版 ...

  4. 0054 Spring MVC的@Controller和@RequestMapping注解

    @Controller注解 该注解用来指示一个类是一个控制器,在Spring的配置xml文件中开启注解扫描 <context:conponent-scan base-package=" ...

  5. Spring MVC原理及配置

    Spring MVC原理及配置 1. Spring MVC概述 Spring MVC是Spring提供的一个强大而灵活的web框架.借助于注解,Spring MVC提供了几乎是POJO的开发模式,使得 ...

  6. 详解Spring MVC 4常用的那些注解

    Spring从2.5版本开始在编程中引入注解,用户可以使用@RequestMapping, @RequestParam, @ModelAttribute等等这样类似的注解.到目前为止,Spring的版 ...

  7. spring MVC、mybatis配置读写分离

    spring MVC.mybatis配置读写分离 1.环境: 3台数据库机器,一个master,二台slave,分别为slave1,slave2 2.要实现的目标: ①使数据写入到master ②读数 ...

  8. Thymeleaf 3与Spring MVC 4 整合配置

    Thymeleaf 3与Spring MVC 4 整合配置 Maven 依赖配置 Spring 相关依赖就不说了 <dependency> <groupId>org.thyme ...

  9. spring mvc 结合 Hessian 配置

    spring mvc 结合 Hessian 配置 1.先在web.xml中配置 <!-- Hessian配置 --> <servlet> <servlet-name> ...

  10. Java spring mvc多数据源配置

    1.首先配置两个数据库<bean id="dataSourceA" class="org.apache.commons.dbcp.BasicDataSource&q ...

随机推荐

  1. Html5实现iPhone开机界面

    今天我突发其想,想到可以用HTML5来仿照苹果操作系统做一个能在Web平台运行的iOS. 当然,要开发出一个操作系统,等我再归山修练一百年再说吧.今天就先娱乐一下,先搞一个开机界面. 完工后的图片: ...

  2. 产品固件(系统)升级——curl/wget

    1.文件下载指令应用 支持断点续传 curl -C - -O "https://curl.haxx.se/download/archeology/curl-7.58.0.tar.gz&quo ...

  3. cookie和session的自我介绍

    Cookie是什么? cookie说的直白点就是保存在用户浏览器端的一个键值对,举个例子,你现在登录了京东商城,你把浏览器关闭之后,你再打开京东,你还是可以对你的账户继续操作,已经购买的商品,订单都是 ...

  4. golang在线手册汇总

    1. golang官网 https://golang.org/ 2. golang中国 http://www.golangtc.com/ http://godoc.golangtc.com/pkg/ ...

  5. 定时任务之elastic-job概述

    定时任务有哪些? Timer定时器 ScheduledExecutorService Spring自带的@Scheduled Quartz定时任务 当当elastic job定时任务 Quartz实现 ...

  6. CodeChef - COUNTARI Arithmetic Progressions (FFT)

    题意:求一个序列中,有多少三元组$(i,j,k)i<j<k $ 满足\(A_i + A_k = 2*A_i\) 构成等差数列. https://www.cnblogs.com/xiuwen ...

  7. HDU - 4725 The Shortest Path in Nya Graph(拆点+Dijkstra)

    题意:N个点,每个点有一个层号L,相邻的两层 Li 与 Li+1 之间的距离为C.另外给出M条无向边,求从点1到点N的最短路. 分析:同一层之间的两点距离并不是0,这是一个小坑.依次把相邻两层的所有点 ...

  8. Winter-2-STL-D The Blocks Problem 解题报告及测试数据

    Time Limit:3000MS     Memory Limit:0KB Description Background Many areas of Computer Science use sim ...

  9. 【android】开源一个企业通讯录app

    软件背景:该app不是替代手机通讯录,而是对其一种补充.项目只是通讯录客户端,数据源是访问本地.还是访问远程服务器,由你来实现 开源地址:http://git.oschina.net/yso/Smar ...

  10. 什么是阻塞式和非阻塞io流?

    阻塞IO:socket 的阻塞模式意味着必须要做完IO 操作(包括错误)才会返回. 非阻塞IO:非阻塞模式下无论操作是否完成都会立刻返回,需要通过其他方式来判断具体操作是否成功. 两者区别: 所谓阻塞 ...