SpringMVC 乾貨系列:從零搭建 SpringMVC+mybatis(一):maven WEB 專案的搭建 | 掘金技術徵文...

weixin_34253539發表於2017-04-25

原本地址:springMVC乾貨系列:從零搭建springMVC+mybatis(一):maven WEB專案的搭建
部落格地址:tengj.top/

前言

今天手把手來教大家如何搭建基於Maven的SpringMVC WEB專案。

正文

開發環境介紹

IDE: MyEclipse 2014
jdk: 1.7
maven:apache-maven-3.1.1

好了,基本環境只要上面這些就行,maven不需要安裝,只要有解壓包就行。MyEclipse 2014有自帶的外掛,我們只要指定下路徑就行。

MyEclipse 2014中Maven的配置

開啟myeclipse中的 Window=>Preferences=>Myeclipse=>Maven4Myeclipse
配置jdk,這裡我們選擇1.7

配置好maven路徑,也就是你之前存放maven解壓包的路徑

指定User Settings,對應settings.xml以及本地倉庫地址,我這邊是建在盤,路徑為E:\m2\repository

建立WEB專案

新建一個web專案

配置專案基本資訊,專案名,java EE,java版本,其中記得要勾上Add maven support,這樣才會生成帶有maven的工程。


建立成功後出正確的專案結構應該是這樣

配置需要的安裝包

下面列出目前需要用到包,直接在pom.xl裡面新增就行

<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>SpringMVCMybatis</groupId>
  <artifactId>SpringMVCMybatis</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <name>SpringMVCMybatis</name>
  <description/>
  <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
          <spring.version>4.1.1.RELEASE</spring.version>
          <cxf.version>2.7.15</cxf.version>
        <slf4j-version>1.7.12</slf4j-version>
        <log4j-version>1.2.17</log4j-version>
        <mybatis-version>3.3.0</mybatis-version>
        <mybatis-spring-version>1.2.3</mybatis-spring-version>
  </properties>
  <dependencies>
      <!-- 日誌配置-->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>${log4j-version}</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>${slf4j-version}</version>
    </dependency>
      <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>${slf4j-version}</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
    </dependency>
    <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-lang3</artifactId>
       <version>3.3</version>
    </dependency>
    <dependency>
       <groupId>com.alibaba</groupId>
       <artifactId>fastjson</artifactId>
       <version>1.2.1</version>
    </dependency>
    <!-- 資料來源配置 -->
    <dependency>
        <groupId>com.mchange</groupId>
        <artifactId>c3p0</artifactId>
        <version>0.9.5.1</version>
    </dependency>
    <!--資料庫相關, mysql, mybatis-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.37</version>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>${mybatis-spring-version}</version>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>${mybatis-version}</version>
    </dependency>
    <dependency>
        <groupId>org.mybatis.generator</groupId>
        <artifactId>mybatis-generator-core</artifactId>
        <version>1.3.2</version>
    </dependency>
    <!-- spring用到的包 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.1.1.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!--測試-->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>4.1.1.RELEASE</version>
        <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>javax</groupId>
      <artifactId>javaee-api</artifactId>
      <version>7.0</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.glassfish.web</groupId>
      <artifactId>javax.servlet.jsp.jstl</artifactId>
      <version>1.2.2</version>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>2.3.2</version>
        <configuration>
          <source>1.7</source>
          <target>1.7</target>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>2.2</version>
        <configuration>
          <version>3.1</version>
          <failOnMissingWebXml>false</failOnMissingWebXml>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>複製程式碼

配置SpringMVC需要的配置檔案

xml配置,注意裡面配置springMvc需要用到的DispatcherServlet,指向的地址是classpath:spring/applicationContext.xml,當然此時還沒建立這個applicationCVontext.xml,下一個步驟來建立。

<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <display-name>springmvctouchbaidu</display-name>
    <servlet>
        <servlet-name>springmvctouchbaidu</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/applicationContext.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvctouchbaidu</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>
    <session-config>
        <session-timeout>60</session-timeout>
    </session-config>
</web-app>複製程式碼

在src/main/resources下面建立個spring目錄用來存放applicationContext.xml
後期會用的的配置很多,所以我一般會根據不同用途建立不同別名的spring配置檔案,然後用applicationContext.xml統一起來。
這裡我建立了 applicationContext.xml以及applicationContext-mvc.xml
applicationContext.xml配置:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       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">
     <import resource="classpath:spring/applicationContext-mvc.xml" />
</beans>複製程式碼

applicationContext-mvc.xml配置:

<?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-3.0.xsd
       http://www.springframework.org/schema/context 
       http://www.springframework.org/schema/context/spring-context-3.0.xsd 
       http://www.springframework.org/schema/mvc 
       http://www.springframework.org/schema/mvc/spring-mvc.xsd"
       default-lazy-init="true">
    <context:component-scan base-package="com.tengj.demo"/>
    <mvc:resources location="/WEB-INF/pages/" mapping="/pages/**"/>
    <!-- 檢視解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
    <!-- 預設的註解對映的支援 -->
    <mvc:annotation-driven>
        <mvc:message-converters register-defaults="true">
            <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                        <value>text/plain;charset=utf-8</value>
                        <value>application/json;charset=utf-8</value>
                        <value>application/x-www-form-urlencoded</value>
                    </list>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>    
</beans>複製程式碼

其中一些重要的配置下篇文章詳細的說明

context:component-scan 用來掃描指定的路徑下的包,來載入元件用的
mvc:resources 指定靜態資源路徑

實現一個簡單的springMVC請求

配置檔案配置好了,我們就來測試一下,寫一個controller來實現前後臺互動
在src/main/java下面建立如下格式的資料夾。這是我習慣的寫法。
common用來存放公共的類
controller控制層
service層用來處理業務邏輯
dao層用來處理資料庫操作
dto層用來存放mybatis根據表自動生成的實體物件
具體結構如下圖:

在controller包下面建立一個類SendToBaiduController

package com.tengj.demo.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
@RequestMapping(value="/sendBaidu")
public class SendToBaiduController {
    @RequestMapping(value="/view",method = RequestMethod.GET)
    public String index(){
        System.out.println("進來了");
        return "index";
    }

}複製程式碼

index.jsp程式碼:

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    <title>My JSP 'index.jsp' starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
  </head>
  <body>
        跳轉進來,表示springMVC流程成功!
  </body>
</html>複製程式碼

部署到tomcat啟動服務看看 輸入地址是否控制檯會列印“進來了”這3字,並跳轉到index介面
http://localhost:8080/springmvctouchbaidu/sendBaidu/view
大家看,如圖表示springMVC整體流程成功了


總結

到此,基於Maven的SpringMVC WEB專案搭建算是成功了,後續會基於這個基礎新增其他的功能,比如整合資料庫框架mybatis,多資料來源處理,定時任務等等。下篇文章將整體上介紹springMVC的配置檔案以及註解標籤的使用。


一直覺得自己寫的不是技術,而是情懷,一篇篇文章是自己這一路走來的痕跡。靠專業技能的成功是最具可複製性的,希望我的這條路能讓你少走彎路,希望我能幫你抹去知識的蒙塵,希望我能幫你理清知識的脈絡,希望未來技術之巔上有你也有我。

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