- sping环境搭建
步骤略，此处简单叙述环境搭建的配置文件。
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_3_1.xsd"
version="3.1">
<description>Spring MVC环境搭建</description>
<!-- 在web.xml中context-param标签并不是必须存在的，
如果不存在，则默认是contextConfigLocation，
而参数value则默认是/WEB-INF/applicationContext.xml。-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring*.xml</param-value>
</context-param>
<!-- 在web.xml中，如果是配置spring，则必须要有listener标签。 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 配置DispatchcerServlet -->
<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置Spring mvc下的配置文件的位置和名称 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
spring-mvc.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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 开启注解 -->
<mvc:annotation-driven />
<!-- 配置自动扫描的包 -->
<context:component-scan base-package="com.sxx.springmvc.controller"></context:component-scan>
<!-- 配置视图解析器 如何把handler 方法返回值解析为实际的物理视图 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- jsp页面的存放位置 -->
<property name = "prefix" value="/WEB-INF/views/"></property>
<!-- 文件后缀名 -->
<property name = "suffix" value = ".jsp"></property>
</bean>
</beans>
- 代码示例
前端代码：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>我的第一个页面</title>
</head>
<body>
<a href="helloworld">hello world</a>
<form action="${pageContext.request.contextPath}/profile" method="post">
Name: <input id="name" name="name" type="text"/>
Email: <input id="email" name="email" type="text"/>
<button type="submit">submit</button>
</form>
<input id="responseEntityTest" type="button" value="request" onclick="responseEntity()">
<script>
function responseEntity(){
$.post("${pageContext.request.contextPath}/responseEntity",{},function(data){
alert(data.message);
});
}
</script>
</body>
</html>
controller：
@RequestMapping("/responseEntity")
public ResponseEntity<Map<String,Object>> responseEntity(){
Map<String,Object> map = new HashMap<String,Object>();
map.put("message", "Hello Wrold");
return new ResponseEntity<Map<String,Object>>(map, HttpStatus.OK);
}
-
结果
alert出“hello world“
res.png
