啟動一個簡單的maven項目

 

1.eclipse-file-new-other:搜索maven，建立一個maven項目，勾選上 Create a simple project點擊finish

2.寫好Group Id 和Artifact Id ,Packaging選擇 war

3.建好工程后會報錯，右鍵Deployment Descriptor:demo2  選擇最長的Generate Deployment Descriptor stub ，此時會自動創建web.xml,報錯消失。

4.現在可以創建web.xml如下：

<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<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>

<servlet>
　　<servlet-name>SpringMVC</servlet-name>
　　<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
　　<init-param>（配置spring-mvc.xml的路徑很重要，要是配置錯誤的話，會報錯找不到文件的錯誤）
　　　　<param-name>contextConfigLocation</param-name>
　　　　<param-value>classpath:/spring-mvc.xml</param-value>
　　</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
　　<servlet-name>SpringMVC</servlet-name>
　　<url-pattern>*.do</url-pattern>
</servlet-mapping>

5.然后寫好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:context="http://www.springframework.org/schema/context" 
    xmlns:jdbc="http://www.springframework.org/schema/jdbc"  
    xmlns:jee="http://www.springframework.org/schema/jee" 
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop" 
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:util="http://www.springframework.org/schema/util"
    xmlns:jpa="http://www.springframework.org/schema/data/jpa"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
        http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
        http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
        http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd">
   <!-- Spring MVC -->
   
        <!-- 配置組件掃描 -->
        <context:component-scan 
            base-package="cn.frode.controller"/>
            
        <!-- 配置ViewResolver配置視圖解析器 r -->
        <bean 
            class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="prefix" 
                value="/web/" />
            <property name="suffix" 
                value=".jsp" />
        </bean>
         <!-- 注解驅動 -->
        <mvc:annotation-driven />
</beans>

6.pom.xml--這個pom.xml中有一些是用不到的，基本的都在這里可以參考。
注：
　　如果沒有servlet的jar包會導致jsp頁面報錯。
　　如果你的jdk版本是1.8，spring的版本要是4.0以上的，否則不兼容，導致掃描不到包。

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>cn.frode</groupId>
  <artifactId>demo</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <dependencies>
      <!-- spring-webmvc 如果是jdk8的話需要用spring4.0以上的版本-->
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>4.2.6.RELEASE</version>
      </dependency>
      <!-- spring-jdbc -->
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>4.2.6.RELEASE</version>
      </dependency>
         <!-- servlet-api -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency>
      <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
      <!-- junit-單元測試-->
      <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.12</version>
      </dependency>
      <!-- mybatis,mybatis-spring -->
      <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis</artifactId>
          <version>3.2.5</version>
      </dependency>
      <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis-spring</artifactId>
          <version>1.3.1</version>
      </dependency>
      <!-- mysql,commons-dbcp -->
  <!--     <dependency>
          <groupId>mysql-connector-java</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.37</version>
      </dependency> -->
      <dependency>
          <groupId>commons-dbcp</groupId>
          <artifactId>commons-dbcp</artifactId>
          <version>1.4</version>
      </dependency>
      <!-- jackson * 3 -->
      <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-core</artifactId>
          <version>2.8.3</version>
      </dependency>
      <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-databind</artifactId>
          <version>2.8.3</version>
      </dependency>
      <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-annotations</artifactId>
          <version>2.8.3</version>
      </dependency>
      <!-- jstl -->
     <!-- <dependency>
      <groupId>Jstl</groupId>
      <artifactId>Jstl</artifactId>
      <version>1.2</version>
    </dependency>  -->
    <!-- 消息摘要技術jar包 -->
    <dependency>
      <groupId>commons-codec</groupId>
      <artifactId>commons-codec</artifactId>
      <version>1.10</version>
    </dependency>
    <!-- 文件上傳依賴jar包 -->
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>1.2</version>
    </dependency>
    <!-- 文件上傳 -->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.2</version>
    </dependency>
  </dependencies>
</project>

7.jsp文件放置的路徑

解決jsp字符集設置的問題：

填寫字符集之后點擊Update，以后新建的jsp頁面都是這個設置的字符集了。

8.controller層--我的項目在web下面有一個hello.jsp頁面

package cn.frode.controller;

@Controller
@RequestMapping("/user")//
public class FrodeController {
    @RequestMapping("/hello")
    public String hello(){
        return "hello";
    }
}

 

 8.訪問成功

 

默認情況下訪問web.xml中的welcome-file的配置頁面

 

通過DispatcherServlet分發給controller在返回給ModelAndView進行解析的頁面

附上我的項目的路徑

 這樣就可以將一個簡單的項目走通了！

 

 

可忽略：https://www.cnblogs.com/fengxiaoyuan/p/11842743.html