博客

这次暑假在腾讯课堂学习了尚硅谷SSM整合视频（SSM开发是目前企业流行使用的框架整合方案）免费教程，该视频讲解了 Spring + SpringMVC + MyBatis 整合实现了 CRUD (增删改查)。将代码整理，运行成功后，写下这篇博文记录一下。

1.创建 Maven 项目，配置 Maven

maven 项目的目录

配置 maven 的 .m2（我的是 C:\Users\cjc.m2） 目录下的 settings.xml 文件

使用 使用阿里云的 maven 仓库

指定 jdk 的版本

2.在 pom.xml 引入 jar 包

配置 pom.xml

<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.atguigu</groupId>
  <artifactId>ssm</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>ssm-crud Maven Webapp</name>
  <url>http://maven.apache.org</url>

  <!-- 引入项目依赖 jar 包 -->
  <dependencies>
  <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>5.0.0</version>
  </dependency>

    <!-- MBG -->
    <!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
  <dependency>
      <groupId>org.mybatis.generator</groupId>
      <artifactId>mybatis-generator-core</artifactId>
      <version>1.3.5</version>
  </dependency>


    <!-- Spring SpringMvc -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
  <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.7.RELEASE</version>
  </dependency>

  <!-- 返回 json 字符串的支持 -->
  <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
  <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.8.8</version>
  </dependency>

  <!-- 添加 file upload 组件，支持文件上传 -->
  <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
  <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
  </dependency>

  <!--  JSR303 -->
  <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
  <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>5.4.1.Final</version>
  </dependency>

    <!-- Spring JDBC -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
  <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.7.RELEASE</version>
  </dependency>

    <!-- 导入单元测试模块 spring-test -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
  <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.3.7.RELEASE</version>
      <scope>test</scope>
  </dependency>


    <!-- Spring 面向切面编程 -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
  <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>4.3.7.RELEASE</version>
  </dependency>

    <!-- MyBatis -->
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
  <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.2</version>
  </dependency>

    <!-- MyBatis 整合 Spring 的适配包 -->
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
  <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
  </dependency>

    <!-- 数据库连接池、驱动 -->
    <!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
  <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
  </dependency>


    <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
  <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.41</version>
  </dependency>

    <!-- jstl servlet-api junit-->
    <!-- https://mvnrepository.com/artifact/jstl/jstl -->
  <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
  </dependency>

  <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
  <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.0.1</version>
      <scope>provided</scope>
  </dependency>


    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <finalName>ssm-crud</finalName>
  </build>

  <properties>  
        <!-- 文件拷贝时的编码 -->  
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>  
        <!-- 编译时的编码 -->  
        <maven.compiler.encoding>UTF-8</maven.compiler.encoding>  
    </properties>
  </project>

3.引入 Bootstrap, jQuery

4.配置 web.xml, SpringMVC, Spring

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>ssm-crud</display-name>

  <!-- 1、启动 Spring 的容器 -->
  <!--  needed for ContextLoaderListener -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

  <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 2、springmvc 的前端控制器，拦截所以请求 -->
  <!-- 写错了 diapatcher 会报 java.io.FileNotFoundException:
   Could not open ServletContext resource [/WEB-INF/diapatcher-servlet.xml] -->
   <!--
        默认为 WEB-INF 下的[servlet-name]-servlet.xml
        也可以使用 init-param 显式指定
        <servlet>
            <servlet-name>dispather</servlet-name>
            <servlet-class>
                org.springframework.web.servlet.DispatcherServlet
            </servlet-class>
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>/WEB-INF/**.xml</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>dispather</servlet-name>
            <url-pattern>/**</url-pattern>
        </servlet-mapping>
    -->
    <servlet>
        <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

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

    <!-- 3.字符编码过滤器 -->
    <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>
        <init-param>
            <param-name>forceRequestEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>forceResponseEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>