springmvc中controller路由出现404

[java]springmvc中controller路由出现404

problem

[java]springmvc中controller路由出现404

reason

可能原因有很多

• idea配置不对
• 编译配置不对
• xml配置
• jsp位置

solution

1. 核对idea配置
   mac: idea->File -> Project Structure
   
   最重要的是 Artifacts，默认配置不对需要手动添加lib包
   

2. 核对编译配置
   mac: idea -》Run -》Edit Configurations -》 点绿色的+号，选择 tomcat–>local -》出现弹窗

弹窗配置server

• name: tomcat8
• application server: 选择tomcat 的安装目录
• URL: 改为 http://localhost:8080/ 默认是 http://localhost:8080/spring02_mvc_war_exploded/

弹窗配置Deployment

• 点击 + 号
• 选择: Artifact…
• 选择完成后，中间区域出现 spring02-mvc:war exploded
• Application context: / 默认是 /spring02_mvc_war_exploded
  

3. xml配置

<servlet-mapping>
    <servlet-name>dispatcherservlet-name>
    
    <url-pattern>/url-pattern>
servlet-mapping>

4. jsp配置

• 配置文件: web/WEB-INF/dispatcher-servlet.xml
• JSP 根据配置存放jsp文件配置

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       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-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    // 
    <context:component-scan base-package="com.ah" />
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        // 
        <property name="prefix">
            <value>/template/value>
        property>
        <property name="suffix">
            <value>.jspvalue>
        property>
    bean>
beans>