随笔 @Springmvc开发一个项目（一）

版权声明：Genius https://blog.csdn.net/weixin_41987706/article/details/88863001

夜光序言：

成年人的世界里最强的靠山，是自己的独立和努力。

 

正文：使用Intellij~~，技术：spring，hibernate，mysql

一、相关环境     

     - Intellij IDEA 2018.2 Ultimate

     - Tomcat 8.0.35

     - JDK 1.8.0_92

     - Spring 4.2.6

     - MySql 5.7

     - Maven 3.3.9

     - Bootstrap 3.3.5

 

我们新建一个webapp项目

这就是Maven的强大之处，如果你需要使用SpringMVC开发网站的话，只需记住几个重要的包的名字，就可以轻松将所有包导入项目中。

么么哒~~现在我们要进行SpringMVC的开发，请把你的pom.xml变成下面的样子，当然不要改你的grupId等信息（从modelVersion到url都不要动）：

<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.Genius</groupId>
  <artifactId>example</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>example Maven Webapp</name>
  <url>http://maven.apache.org</url>

  <properties>
    <spring.version>4.2.2.RELEASE</spring.version>
    <spring-data.version>1.2.0.RELEASE</spring-data.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
    </dependency>

    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.1</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

    <dependency>
      <groupId>org.springframework.data</groupId>
      <artifactId>spring-data-jpa</artifactId>
      <version>${spring-data.version}</version>
    </dependency>

    <dependency>
      <groupId>org.hibernate.javax.persistence</groupId>
      <artifactId>hibernate-jpa-2.0-api</artifactId>
      <version>1.0.0.Final</version>
    </dependency>

    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-entitymanager</artifactId>
      <version>3.6.10.Final</version>
    </dependency>

    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.34</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.14</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>4.3.11.RELEASE</version>
    </dependency>


    <dependency>
      <groupId>org.json</groupId>
      <artifactId>json</artifactId>
      <version>20080701</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-nop -->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-nop</artifactId>
      <version>1.7.26</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <finalName>example</finalName>
  </build>
</project>

1、web.xml配置

    打开src\main\webapp\WEB-INF\下的web.xml文件，如下：

<?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>SpringMVCDemo Web Application</display-name>

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

    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!-- 夜光： 为了能够处理中文的post请求，再配置一个encodingFilter，以避免post请求中文出现乱码情况 -->
    <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>

<?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" xmlns:jpa="http://www.springframework.org/schema/data/jpa"
              xmlns:tx="http://www.springframework.org/schema/tx"
              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 http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

       <!--指明 controller 所在包，并扫描其中的注解-->
       <context:component-scan base-package="com.Genius.example.controller"/>

       <!-- 静态资源(js、image等)的访问 -->
       <mvc:default-servlet-handler/>

       <!-- 开启注解 -->
       <mvc:annotation-driven/>

       <!--ViewResolver 视图解析器-->
       <!--用于支持Servlet、JSP视图解析-->
       <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
              <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
              <property name="prefix" value="/html/"/>
              <property name="suffix" value=".jsp"/>
       </bean>

       <!-- 表示JPA Repository所在的包 -->
       <jpa:repositories base-package="com.Genius.example.repository"/>

       <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
              <property name="persistenceUnitName" value="defaultPersistenceUnit"/>
       </bean>

       <!-- 事务管理 -->
       <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
              <property name="entityManagerFactory" ref="entityManagerFactory"/>
       </bean>

       <tx:annotation-driven transaction-manager="transactionManager"/>

</beans>