SSM詳細整合

時間 2019-11-21

標籤 ssm 詳細整合简体版

原文原文鏈接

SSM(Spring+Spring MVC+MyBatis)html

1 簡介

SSM 包含三大框架:java

　　Spring MVC (web level)，採起 MVC 架構，意圖取代麻煩的 Servlet 寫法，簡化 web 層web

　　MyBatis (dao level)，意圖取代 jdbc 操做數據庫，輕量級、靈活、高效spring

　　Spring，提供了 IoC(容器，用來管理組裝對象) 和 AoP(切面，用來自動加強對象功能) 功能，它用來將對象和其餘框架組織在一塊兒.sql

2 首先，建立項目

　　推薦使用 Maven 或者 Gradle 建立 ssm 項目。數據庫

　　能夠選擇在 Idea 下面，建立 Maven 或 Gradle 項目便可。apache

3 其次，增長依賴(jar 包)

Maven 的配置文件是 pom.xml，想爲項目添加依賴，只須要向 pom.xml 增長相關配置便可。spring-mvc

示例：服務器

<?xml version="1.0" encoding="UTF-8"?>

<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>147</groupId>
  <artifactId>my_ssm</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>my_ssm Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>
    <!-- 用來單元測試的jar包-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
  <!--spring jar-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>

    <!--spring mvc 的依賴-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>

    <!--mybatis jar 包-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.6</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.2</version>
    </dependency>

    <!--數據庫相關 jar 包-->
    <dependency>
      <groupId>org.mariadb.jdbc</groupId>
      <artifactId>mariadb-java-client</artifactId>
      <version>2.3.0</version>
    </dependency>

    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>

    <!--其餘-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

    <!--Jackson架包-->
    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.7</version>
    </dependency>

    <!--日誌架包log4j-->
    <!-- https://mvnrepository.com/artifact/log4j/log4j -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>

  </dependencies>

  <build>
    <finalName>my_ssm</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.0.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.7.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.20.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

點擊IDEA刷新工具即自動下載jar包並配置，或點擊Import Changesmybatis

基本只須要下面幾個配置文件:

resources/mybatis.xml, mybatis 的核心配置文件
resources/spring-root.xml, spring 的核心配置文件
resources/spring-web.xml, spring mvc 的配置文件，能夠配置 springmvc 相關的東西
web.xml, 由於是 web 項目，必需要配置 web.xml，讓服務器啓動的時候加載 spring 和 spring mvc
log4j.properties，用來定義日誌輸出

mybatis.xml:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
    <settings>
        <setting name="logImpl" value="LOG4J"/>
    </settings>
</configuration>

spring-root.xml 示例:

ps:本示例命名爲spring_root.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"
       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">

    <!--@Component/@Service/@Repository/@Controller-->
    <context:component-scan base-package="com.gdnf.ssm.service" />

    <!--建立數據源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="org.mariadb.jdbc.Driver" />
        <property name="jdbcUrl" value="jdbc:mariadb://localhost:3306/bookdb?useUnicode=true&amp;characterEncoding=utf-8&amp;rewriteBatchedStatements=true" />
        <property name="user" value="root" />
        <property name="password" value="dz520123" />
    </bean>

    <!--配置 mybatis-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation" value="classpath:mybatis.xml" />
        <property name="mapperLocations" value="classpath:com.gdnf.ssm.dao/*.xml" />
    </bean>

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
        <property name="basePackage" value="com.gdnf.ssm.dao" />
    </bean>
</beans>

spring-web.xml 示例:

ps：本示例的命名爲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:contxt="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/cache http://www.springframework.org/schema/cache/spring-cache.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--掃描包下面全部的 @Controller 註解的類，並將其實例化，放入容器-->
    <contxt:component-scan base-package="com.gdnf.ssm.web" />

    <!--啓用 mvc 的經常使用註解-->
    <mvc:annotation-driven />

    <!--將全部的靜態資源，交給 Servlet 處理-->
    <mvc:default-servlet-handler />

    <!--配置 jsp view解析器-->
    <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>

web.xml 示例，用來驅動 spring 和 spring mvc:

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>

  <display-name>Archetype Created Web Application</display-name>
  <!--全局，注意各標籤的順序-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring_root.xml</param-value>
  </context-param>
  <!--編碼過濾器-->
  <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>
  </filter>
  <filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <!--配置 Spring 的容器-->

  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!--配置 MVC 容器-->
  <!--將全部的請求，都交給 Spring MVC 處理-->
  <servlet>
    <servlet-name>app</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring_mvc.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>app</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

</web-app>

log4j.properties，用來配置日誌:

# 全局配置: 只顯示錯誤級別的日誌，輸出爲名字爲 stdou 的日誌
log4j.rootLogger=ERROR, stdout

# MyBatis 的日誌配置，只輸出 com.nf147.bookstore_ssm.dao 包下產生 INFO 以及以上級別的日誌
#TRACEINFO
log4j.logger.com.gdnf.ssm.dao=TRACE

# 定義名字爲 stdout 的日誌，將日誌輸出到控制檯
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

目錄結構圖