在IDEA中使用MBean创建Spring项目

最近CTF中JAVA题越来越多，作为一个web手也必须入门一下JAVA web。于是用IDEA来开发，然而掉进了坑整了好几天Orz

环境准备

JDK，IDEA以及tomcat

项目创建

New Project后选择Maven，选择本地的SDK版本。然后勾选Create from archetype，然后选择maven-archetype-webapp

配置项目GroupId和ArtifactId

选择maven配置，可以选择把maven的配置放到其它未知节省C盘空间

settings.xml中要注意的是设置好repository的位置以及镜像，国内镜像下载速度会快很多

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
    <localRepository>D:\spring\m2\repository</localRepository>
    

    <mirrors>
        <mirror>
            <id>nexus-aliyun</id>
            <mirrorOf>*</mirrorOf>
            <name>Nexus aliyun</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public</url>
        </mirror>
    </mirrors>

</settings>

接着配置项目名

创建成功后，右下选择Enable-Auto-Import，开启自动导入

配置pom.xml

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.10</maven.compiler.source>
    <maven.compiler.target>1.10</maven.compiler.target>
  </properties>

<maven.compiler.source>和<maven.compiler.target>这两个标签可以根据jdk的版本来配置

然后是配置各种需要的依赖

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
<!--    日志  -->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.30</version>
    </dependency>
<!--    J2EE  -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.1</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
<!--    mysql驱动包  -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.16</version>
    </dependency>
<!--    springframework -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.2.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.2.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.2.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.2.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.2.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>com.github.stefanbirkner</groupId>
      <artifactId>system-rules</artifactId>
      <version>1.19.0</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.9.5</version>
    </dependency>
<!--    其它  -->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>3.9</version>
    </dependency>
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
        <version>1.4</version>
    </dependency>
  </dependencies>

添加SpringMVC框架

选择File->Project Structure->Facets，如果里面有Spring，就将其删除

然后项目上右键，Add Framework Support…

找到Spring，选择Spring MVC

完善标准目录

在/src/main目录下创建java和resources文件夹

然后进入File->Project Structure->Modules，选择文件夹右键

将java文件夹设置为Source，将resources文件夹设为Resource

这样就可以在java中创建一个example.controller包了

配置web.xml

直接复制即可

<?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_3_1.xsd"         version="3.1">
<display-name>Archetype Created Web Application</display-name>
<!--welcome pages-->
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!--配置springmvc DispatcherServlet-->
<servlet>
    <servlet-name>springMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <!--配置dispatcher.xml作为mvc的配置文件-->
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/dispatcher-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
    <async-supported>true</async-supported>
</servlet>
<servlet-mapping>
    <servlet-name>springMVC</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>
<!--把applicationContext.xml加入到配置文件中-->
<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>
</web-app>

配置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">
    <!--此文件负责整个mvc中的配置-->
    <!--启用spring的一些annotation -->
    <context:annotation-config/>
    <!-- 配置注解驱动 可以将request参数与绑定到controller参数上 -->
    <mvc:annotation-driven/>
    <!--静态资源映射-->
    <!--本项目把静态资源放在了webapp的statics目录下，资源映射如下-->
    <mvc:resources mapping="/css/**" location="/statics/css/"/>
    <mvc:resources mapping="/js/**" location="/statics/js/"/>
    <mvc:resources mapping="/image/**" location="/statics/images/"/>
    <mvc:default-servlet-handler />
    <!--这句要加上，要不然可能会访问不到静态资源，具体作用自行百度-->
    <!-- 对模型视图名称的解析，即在模型视图名称添加前后缀(如果最后一个还是表示文件夹,则最后的斜杠不要漏了) 使用JSP-->
    <!-- 默认的视图解析器 在上边的解析错误时使用 (默认使用html)- -->
    <bean id="defaultViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/views/"/><!--设置JSP文件的目录位置-->
        <property name="suffix" value=".jsp"/>
        <property name="exposeContextBeansAsAttributes" value="true"/>
    </bean>
    <!-- 自动扫描装配 -->
    <context:component-scan base-package="example.controller"/>
</beans>

静态资源的目录在/src/main/webapp/下创建

配置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"       xmlns:context="http://www.springframework.org/schema/context"       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">
    <context:component-scan base-package="example"/>
</beans>

配置tomcat

tomcat官网下一个对应版本，然后在环境变量中添加变量CATALINA_HOME，值为tomcat的本地路径。然后在PATH中添加%CATALINA_HOME%\bin。在cmd下执行startup，能够启动tomcat即成功

然后在IDEA中配置tomcat，点击Edit Configurations…

点击左上角的+号

选择Tomcat Server->Local

随便起个名以及选择本地的tomcat作为Application server

然后换到Deployment选择Artifact…

选择war exploded

然后Application context可以改成/

Hello World

整完了这些，就可以来写一个简单的Hello World了

在example.controller下创建一个DemoController

package example.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/home")
public class DemoController {
    @RequestMapping("/index")
    public String index(Model model){
        model.addAttribute("msg","Hello Spring MVC");
        return "index";
    }
}

在/src/main/webapp/view/下创建index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h1>${msg}</h1>
</body>
</html>

启动一下

访问到/home/index即可