IntelliJ IDEA spring mvc +mybatis 環(huán)境搭建服務(wù)器(上)

所需軟件

Intellij IDEA Ultimate （一定要這個版滴,不過需要收費允跑，別問我為什么，說多了都是淚索烹，半夜沒睡找不到tomcat部署項目百姓，建議用最新版）
Tomcat （下下來况木，解壓即可使用火惊，測試方式進入tomcat解壓包的bin目錄startup.bat屹耐，打開即可）
JDK 我使用的是1.8
MySql 5.6
Maven （可使用Intellij IDEA自帶的）

正式開搭

第一步， Creat New Project

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-第二步寿弱，創(chuàng)建Maven項目（如圖）症革，然后Next

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第三步地沮，幾個必填摩疑，可以理解為項目唯一標識符（Maven項有很多項目）

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第4步 next （伙伴們自己填一下雷袋，點擊finish就創(chuàng)好了）

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開始初始化配置

先說Maven的項目依賴配置文件pom.xml楷怒，我們進入mvn repository 查找需要搜索的包結(jié)果如圖：

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點擊進入第一個搜索結(jié)果鸠删，然后各種版本

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點擊所需版本刃泡。如圖：

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里面的dependency即為所需標簽烘贴。
總的配置文件如下，許多暫時用不上：

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.nothing</groupId>
  <artifactId>hellospringmvc</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>hellospringmvc Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>4.2.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.7.2</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.2.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.2.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.2.5.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework.data</groupId>
      <artifactId>spring-data-jpa</artifactId>
      <version>1.9.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.hibernate.javax.persistence</groupId>
      <artifactId>hibernate-jpa-2.0-api</artifactId>
      <version>1.0.1.Final</version>
    </dependency>
    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-entitymanager</artifactId>
      <version>5.1.0.Final</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.38</version>
    </dependency>
    <dependency>
      <groupId>org.json</groupId>
      <artifactId>json</artifactId>
      <version>20160212</version>
    </dependency>
  </dependencies>
  <build>
    <finalName>hellospringmvc</finalName>
  </build>
</project>

web.xml (web項目都會配置這個铺峭，就像android的manifest一樣) 先貼出來纳账。

<?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>hellodemo</display-name>
  <servlet>
    <servlet-name>myspring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>myspring</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <filter>
    <filter-name>encodingFilter</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>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

</web-app>

下面一句使用spring框架的默認DispatcherSerlet永罚。<load-on-starup> 該servlet的啟用時間呢袱。<servlet-name>myspring</servlet-name>指定了serevlet配置文件myspring翅敌。url -pattern是指所有路徑均會被該servlet攔截蚯涮。

  <servlet>
    <servlet-name>myspring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>

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

而filter一句是防止中文亂碼卖陵，啟用uft-8泪蔫。

配置Servlet myspring-serlet.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">

    <!--指明 controller 所在包撩荣，并掃描其中的注解-->
    <context:component-scan base-package="com.nothing.controller"/>

    <!-- 靜態(tài)資源(js餐曹、image等)的訪問 -->
    <mvc:default-servlet-handler/>

    <!-- 開啟注解 -->
    <mvc:annotation-driven/>

    <!--ViewResolver 視圖解析器-->
    <!--用于支持Servlet敌厘、JSP視圖解析-->
    <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/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

新建java類

@Controller
public class MainController {
    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String index() {
        return "index";
    }
    @RequestMapping(value="nice",method = RequestMethod.GET)
    public  String nice(Model model){
        model.addAttribute("result","hahaha 第一個參數(shù)");
        return "nice";
    }
}

灰常簡單的nice.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>nice to meet you!</title>
</head>
<body>
<br/>
<div>
    ${result}
</div>

</body>
</html>

最后整個工程如圖：

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將項目部署到tomcat卿吐，運行即可得到如圖：