springMVC helloword示例

新建maven web工程

引入maven依赖

<!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-core</artifactId>
  <version>5.3.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-beans</artifactId>
  <version>5.3.0</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
  <version>5.3.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
  <version>5.3.0</version>
</dependency>

引入servlet-api.jar包

配置java resources webapp目录

配置前端控制器

<servlet>
  <servlet-name>springmvc</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  <init-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:springmvc.xml</param-value>
  </init-param>
</servlet>
<servlet-mapping>
  <servlet-name>springmvc</servlet-name>
  <url-pattern>*.do</url-pattern>
</servlet-mapping>

新建springmvc.xml文件

在src/resources文件夹下新建配置文件，如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       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.xsd">

</beans>

helloword

public class HelloController  implements Controller {
    @Override
    public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
        ModelAndView mav=new ModelAndView();
        mav.setViewName("/WEB-INF/jsp/test.jsp");
        mav.addObject("msg","今天天气很冷");
        return mav;
    }
}

新建jsp页面

在WEB-INF下新建目录jsp，并在新目录下创建jsp页面，如下:

<%@ page contentType="text/html;charset=utf-8" language="java" %>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>webrx</title>
</head>
<body>
 msg:${msg}
</body>
</html>

配置Handler

然后配置服务器浏览：http://localhost/hello.do

中文编码支持

<filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

标签： spring java postman

本文转载自: https://blog.csdn.net/weixin_57176230/article/details/124823441
版权归原作者 陈卸甲 所有，如有侵权，请联系我们删除。

springMVC helloword示例

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