一、建Maven(war)工程
报错是没有配置web.xml
- 在src->main->webapp 下建WEB-INF文件夹
- 在该文件下,建web.xml模板。
二、配置dom.xml(即导入jar包。)
在maven仓库中找spring context和spring web mvc,之所以只配置这两个,是因为maven有传递依赖的功能。
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.6.RELEASE</version>
</dependency>
配置成功后,在Maven Dependencies下会有对应的Jar包
三、配置web.xml
在web.xml配置前端控制器:DispatcherServlet
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<servlet>
<!-- 默认加载方式
默认加载必须规范:
文件命名:servlet-name-servlet.xml===springmvc-servlet.xml
路劲规范:必须在WEB-INF目录下
-->
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet </servlet-class>
<!--Tomcat一启动就运行init()方法-->
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 配置拦截器(拦截请求) -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
四、配置mvc-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<!--配置springmvc约束。其实和spring约束一样 -->
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
">
<!--配置注解处理器映射器
功能:负责寻找执行类:Controller
-->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>
<!-- 配置注解处理器适配器
功能:执行Controller
-->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean>
<!--配置视图解析器:InternalResourceViewResolver解析出真正的物理视图
后返回逻辑视图:index 解析出真正的物理视图:前缀+逻辑视图+后缀====/WEB-INF/pages/index.jsp
-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
五、自定义Controller类
package com.nenene;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller //相当于在mvc-servlet.xml配置<bean id="userController" class="UserController路径">
public class UserController {
@RequestMapping("index")
public String myHello(){
return "index";
}
}
六、定义视图页面
根据视图解析路径:/WEB-INF/pages/
注意导入Tomcat,否则创建的jsp文件会报错
七、将项目部署到Tomcat上
右键项目名称->Build Path->Configure Build Path->Libraries->Add Library->Server Runtime->选择继配置好的Tomcat->OK