ssm框架的搭建和整合

使用idea的来创建ssm 的整合

使用springmvc +spring + mybits的框架的的搭建。是现在比较成熟的框架

在长期的不安和焦虑中，我开始反思，我以前所理解的技术是一座金字塔，

底层是 高级编程语言  二层是 框架，spring, mybaties, boot , duubo ， 三层是 分布式，容器，缓存，mq等，我们需要不断的往上去攀爬，才能达到技术的顶峰，然后我发现我错了，技术的层级不应该是金字塔，而是逐渐向底层靠近，编程语言 -> 编程思想 -> 设计模式 -> 编译原理 -> jvm  等等。。  越是想要达到技术的顶峰，你越是需要去了解技术的本身，了解底层原理，良好的编码规范，设计模式，编程思想，这些基础在千变万化的永恒存在的，是所有框架的核心

1.首先使用idea创建的一个maven的项目

2.下面是这样的

3 点击next的下一步：填写这个maven项目的GroupId，ArtifactId，Version信息。这是标识maven项目的三维坐标。点击Next

4 

5

6.完成后的改创建的包和项目

开始正式搭建项目

1 先修改web.xml

<?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">  <!-- 编码过滤器 -->  <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>  </filter>  <filter-mapping>    <filter-name>encodingFilter</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping>  <!-- 配置DispatcherServlet -->  <servlet>    <servlet-name>SpringMVC</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <!-- 配置springMVC需要加载的配置文件-->    <init-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:spring-*.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>    <!-- 匹配所有请求，此处也可以配置成 *.do 形式 -->    <url-pattern>*.do</url-pattern>  </servlet-mapping>  <welcome-file-list>    <welcome-file>index.html    </welcome-file>  </welcome-file-list></web-app>

2.pom.xml 的修改和添加版本

<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>cn.taiji</groupId>  <artifactId>ssmdemo1</artifactId>  <packaging>war</packaging>  <version>1.0-SNAPSHOT</version>  <name>ssmdemo1 Maven Webapp</name>  <url>http://maven.apache.org</url>  <properties>    <!-- 设置项目编码编码 -->    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>    <!-- spring版本号 -->    <spring.version>4.3.5.RELEASE</spring.version>    <!-- mybatis版本号 -->    <mybatis.version>3.4.1</mybatis.version>  </properties>  <dependencies>    <!-- java ee -->    <dependency>      <groupId>javax</groupId>      <artifactId>javaee-api</artifactId>      <version>7.0</version>    </dependency>    <!-- 单元测试 -->    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>4.12</version>    </dependency>    <!-- 实现slf4j接口并整合 -->    <dependency>      <groupId>ch.qos.logback</groupId>      <artifactId>logback-classic</artifactId>      <version>1.2.2</version>    </dependency>    <!-- JSON -->    <dependency>      <groupId>com.fasterxml.jackson.core</groupId>      <artifactId>jackson-databind</artifactId>      <version>2.8.7</version>    </dependency>    <!-- 数据库 -->    <dependency>      <groupId>mysql</groupId>      <artifactId>mysql-connector-java</artifactId>      <version>5.1.41</version>      <scope>runtime</scope>    </dependency>    <!-- 数据库连接池 -->    <dependency>      <groupId>com.mchange</groupId>      <artifactId>c3p0</artifactId>      <version>0.9.5.2</version>    </dependency>    <!-- MyBatis -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis</artifactId>      <version>${mybatis.version}</version>    </dependency>    <!-- mybatis/spring整合包 -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis-spring</artifactId>      <version>1.3.1</version>    </dependency>    <!-- Spring -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-core</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-beans</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-context</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-jdbc</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-tx</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-web</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-test</artifactId>      <version>${spring.version}</version>    </dependency>      <dependency>          <groupId>org.junit.jupiter</groupId>          <artifactId>junit-jupiter-api</artifactId>          <version>RELEASE</version>      </dependency>  </dependencies>  <build>    <finalName>ChatRobot</finalName>    <plugins>      <plugin>        <groupId>org.apache.maven.plugins</groupId>        <artifactId>maven-compiler-plugin</artifactId>        <configuration>          <!-- 设置JDK版本 -->          <source>1.7</source>          <target>1.7</target>        </configuration>      </plugin>    </plugins>  </build></project>3 .建立spring-mvc.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-3.0.xsd">    <!-- 扫描web相关的bean -->    <context:component-scan base-package="com.taiji.controller"/>    <!-- 开启SpringMVC注解模式 -->    <mvc:annotation-driven/>    <!-- 静态资源默认servlet配置 -->    <mvc:default-servlet-handler/>    <!-- 配置jsp 显示ViewResolver -->    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>        <property name="prefix" value="/WEB-INF/views/"/>        <property name="suffix" value=".jsp"/>    </bean></beans>

4.jdbc.properties 文件

jdbc.driver=com.mysql.jdbc.Driver#数据库地址jdbc.url=jdbc:mysql://localhost:3306/vantest?useUnicode=true&characterEncoding=utf8#用户名jdbc.username=root#密码jdbc.password=#最大连接数c3p0.maxPoolSize=30#最小连接数c3p0.minPoolSize=10#关闭连接后不自动commitc3p0.autoCommitOnClose=false#获取连接超时时间c3p0.checkoutTimeout=10000#当获取连接失败重试次数c3p0.acquireRetryAttempts=2

5.spring-mybatis.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: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/tx       http://www.springframework.org/schema/tx/spring-tx.xsd">    <!-- 扫描service包下所有使用注解的类型 -->    <context:component-scan base-package="com.taiji.service"/>    <!-- 配置数据库相关参数properties的属性：${url} -->    <context:property-placeholder location="classpath:jdbc.properties"/>    <!-- 数据库连接池 -->    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">        <property name="driverClass" value="${jdbc.driver}"/>        <property name="jdbcUrl" value="${jdbc.url}"/>        <property name="user" value="${jdbc.username}"/>        <property name="password" value="${jdbc.password}"/>        <property name="maxPoolSize" value="${c3p0.maxPoolSize}"/>        <property name="minPoolSize" value="${c3p0.minPoolSize}"/>        <property name="autoCommitOnClose" value="${c3p0.autoCommitOnClose}"/>        <property name="checkoutTimeout" value="${c3p0.checkoutTimeout}"/>        <property name="acquireRetryAttempts" value="${c3p0.acquireRetryAttempts}"/>    </bean>    <!-- 配置SqlSessionFactory对象 -->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <!-- 注入数据库连接池 -->        <property name="dataSource" ref="dataSource"/>        <!-- 扫描model包 使用别名 -->        <property name="typeAliasesPackage" value="com.taiji.pojo"/>        <!-- 扫描sql配置文件:mapper需要的xml文件 -->        <property name="mapperLocations" value="classpath:mapper/*.xml"/>    </bean>    <!-- 配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <!-- 注入sqlSessionFactory -->        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>        <!-- 给出需要扫描Dao接口包 -->        <property name="basePackage" value="com.taiji.dao"/>    </bean>    <!-- 配置事务管理器 -->    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <!-- 注入数据库连接池 -->        <property name="dataSource" ref="dataSource"/>    </bean>    <!-- 配置基于注解的声明式事务 -->    <tx:annotation-driven transaction-manager="transactionManager"/></beans>

三：测试mybatis

userdaotest 

package com.taiji.test;import com.taiji.dao.IUserdao;import com.taiji.pojo.User;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;/** * 测试mybatis */// 加载spring配置文件@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration({"classpath:spring-mybatis.xml"})public class userdaotest {    @Autowired    private IUserdao dao;    @Test    public void testSelectUser() throws Exception {        long id = 1;        User user = dao.selectUser(id);        System.out.println(user.getUsername());    }}

2.UserDao.xml

<?xml version='1.0' encoding='UTF-8'?><!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"><mapper namespace="com.taiji.dao.IUserdao" >    <select id="selectUser" resultType="User" parameterType="long">      select * from user where id=#{id}    </select></mapper>

就可以测试是否成功的！连上数据库