环境
- jdk10
- win10
- 编辑器:intellij idea
- apache-tomcat-8.5.29
步骤
一.创建项目
选择spring项目，以防万一，全选spring库
二.配置tomcat
根据自己的操作系统，下载合适的版本 下载链接，然后双击安装
然后配置编辑server,run->edit configurations->tomcat->local,按如下图填写
三.helloworld示例代码
在src下新建包，包名：com.xtcweb.hello,其中xtcweb是我建项目时候填写的名字
新建文件HelloController.java
代码如下
package com.xtcweb.hello;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
@RequestMapping(value = "/hello", method = RequestMethod.GET)
public class HelloController {
@RequestMapping(value = "/hello", method = RequestMethod.GET)
public String printHello(ModelMap model) {
model.addAttribute("msg", "Spring MVC Hello World");
model.addAttribute("name", "帅哥");
return "hello";
}
}在web/WEB-INFO目录下新建views目录，新增文件 hello.jsp
代码如下：
<%--
Created by IntelliJ IDEA.
User: ThinkPad
Date: 2018/4/5
Time: 0:47
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>${msg}</title>
</head>
<body>
<h1>${msg}</h1>
<span>${name}</span>
</body>
</html>
分别配置
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>dispatcher-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/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:component-scan base-package="com.xtcweb.hello"/>
<!--ViewResolver 视图解析器-->
<!--用于支持Servlet、JSP视图解析-->
<bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!-- 静态资源(js、image等)的访问 -->
<mvc:default-servlet-handler/>
<!-- 开启注解 -->
<mvc:annotation-driven/>
</beans>applicationContext.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
</beans>四.jstlel下载 网盘下载
下载后解压，到web/WEB-INFO目录下新建lib目录，把解压后的jar文件拷贝进去，否则会报错jstlel找不到
五.配置运行项目
运行项目，浏览器打开：http://localhost:8080/hello/hello
成功！！
六.遇到的问题
1.jdk安装网上教程太乱，jdk10参照上一篇教程： [jdk10安装][8]
2.tomcat一直运行不起，检查xml文件，编辑器所有的右上角都打绿色勾，检测配置里面的路径和包名是否正确
3.检查controller里面用到的包是否引入，很多教程之贴了控制器代码，没有把顶部的包引用代码贴出来。
