整合S S M

旧城等待， 2022-02-12 12:23 131阅读 0赞

### SSM（Spring+SpringMVC+MyBatis）框架集由Spring、MyBatis两个开源框架整合而成（SpringMVC是Spring中的部分内容）。常作为数据源较简单的web项目的框架。 ###

Spring  
　　Spring就像是整个项目中装配bean的大工厂，在配置文件中可以指定使用特定的参数去调用实体类的构造方法来实例化对象。也可以称之为项目中的粘合剂。  
　　Spring的核心思想是IoC（控制反转），即不再需要程序员去显式地`new`一个对象，而是让Spring框架帮你来完成这一切。  
　　SpringMVC  
　　SpringMVC在项目中拦截用户请求，它的核心Servlet即DispatcherServlet承担中介或是前台这样的职责，将用户请求通过HandlerMapping去匹配Controller，Controller就是具体对应请求所执行的操作。SpringMVC相当于SSH框架中struts。  
　　mybatis  
　　mybatis是对jdbc的封装，它让数据库底层操作变的透明。mybatis的操作都是围绕一个sqlSessionFactory实例展开的。mybatis通过配置文件关联到各实体类的Mapper文件，Mapper文件中配置了每个类对数据库所需进行的sql语句映射。在每次与数据库交互时，通过sqlSessionFactory拿到一个sqlSession，再执行sql命令。  
页面发送请求给控制器，控制器调用业务层处理逻辑，逻辑层向持久层发送请求，持久层与数据库交互，后将结果返回给业务层，业务层将处理逻辑发送给控制器，控制器再调用视图展现数据。

#### 1.整体项目图： ####

![在这里插入图片描述][2019042822354770.png]  
![在这里插入图片描述][2019042822364244.png]

#### 2.通过generate-confg.xml（逆向工程）创建Mapper跟POJO: ####

**generate-confg.xml：**

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE generatorConfiguration
      PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
      "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
    
    <generatorConfiguration>
       
      <classPathEntry location="C:\maven-repository\mysql\mysql-connector-java\5.1.27\mysql-connector-java-5.1.27.jar" />
    
      <context id="DB2Tables" targetRuntime="MyBatis3">
      
    		<commentGenerator>
    			<property name="suppressAllComments" value="true" />
    		</commentGenerator>
      	 
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"  
            connectionURL="jdbc:mysql://localhost:3306/login"  
            userId="root"  
            password="tang123">  
        </jdbcConnection>   
        
    	
        <javaTypeResolver >
          <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>
    	 
        <javaModelGenerator targetPackage="com.sxt.pojo" targetProject="SSM2">
        	 
          <property name="enableSubPackages" value="false" />
          <property name="trimStrings" value="true" />
        </javaModelGenerator>
     	
        <sqlMapGenerator targetPackage="com.sxt.mapper"  targetProject="SSM2">
          <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
     	 
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.sxt.mapper"  targetProject="SSM2">
          <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        
         <table  tableName="t_user" domainObjectName="User" >
        </table> 
        
      </context>
    </generatorConfiguration>

![在这里插入图片描述][20190428224803453.png]

#### 3.加入配置文件： ####

**applicationContext.xml：**

**springmvc.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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
    		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-4.3.xsd">
    	
    	
    	<context:component-scan base-package="com.sxt.controller" use-default-filters="false">
    		<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    	</context:component-scan>
    	
    	
    	<mvc:annotation-driven >
    		 
    	</mvc:annotation-driven>
    	
     	
     
      <bean  class="org.springframework.web.servlet.view.InternalResourceViewResolver">
     		<property name="prefix" value="/"></property>
     		<property name="suffix" value=".jsp"></property>
     	</bean>  
    
    	
    </beans>

**mybatis-config.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="lazyLoadingEnabled" value="true"/>
      	<setting name="aggressiveLazyLoading" value="false"/>
      </settings>
    </configuration>

#### 4.添加依赖和Tomcat插件： ####

**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/xsd/maven-4.0.0.xsd">
      <modelVersion>4.0.0</modelVersion>
      <groupId>com.sxt</groupId>
      <artifactId>SSM2</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>war</packaging>
      
      <properties>
    		<spirng.version>4.3.3.RELEASE</spirng.version>
    	</properties>
    	<dependencies>
    	 
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-orm</artifactId>
    			<version>${spirng.version}</version>
    		</dependency>
    		 
    		<dependency>
    		    <groupId>org.mybatis</groupId>
    		    <artifactId>mybatis</artifactId>
    		    <version>3.4.5</version>
    		</dependency>
    
    		 
    		
    		<dependency>
    			<groupId>org.mybatis</groupId>
    			<artifactId>mybatis-spring</artifactId>
    			<version>1.3.2</version>
    		</dependency>
    		 
    		 
    		<dependency>
    		    <groupId>mysql</groupId>
    		    <artifactId>mysql-connector-java</artifactId>
    		    <version>5.1.21</version>
    		</dependency>
    		 
    		<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>slf4j-api</artifactId>
    			<version>1.7.25</version>
    		</dependency>
    		<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>slf4j-log4j12</artifactId>
    			<version>1.7.25</version>
    		</dependency>
    		<dependency>
    			<groupId>log4j</groupId>
    			<artifactId>log4j</artifactId>
    			<version>1.2.17</version>
    		</dependency>
    		 
    		<dependency>
    			<groupId>com.mchange</groupId>
    			<artifactId>c3p0</artifactId>
    			<version>0.9.5.2</version>
    		</dependency> 
    		
    		<dependency>
    			<groupId>junit</groupId>
    			<artifactId>junit</artifactId>
    			<version>3.8.1</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-webmvc</artifactId>
    			<version>4.1.3.RELEASE</version>
    		</dependency>
    		<dependency>
    			<groupId>javax.servlet</groupId>
    			<artifactId>jstl</artifactId>
    			<version>1.1.2</version>
    		</dependency>
    		<dependency>
    			<groupId>taglibs</groupId>
    			<artifactId>standard</artifactId>
    			<version>1.1.2</version>
    		</dependency>
    	</dependencies>
    	
    	<build>
    		<plugins>
    			
    			<plugin>
    				<groupId>org.apache.tomcat.maven</groupId>
    				<artifactId>tomcat7-maven-plugin</artifactId>
    				<version>2.2</version>
    				<configuration>
    					
    					<port>8082</port>
    					
    					<path>/</path>
    					
    					<uriEncoding>utf-8</uriEncoding>
    				</configuration>
    			</plugin>
    		</plugins>
    	</build>
      
    </project>

#### 5.web.xml: ####

<?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>SpringMVC-01</display-name>
      <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
      </welcome-file-list>
      
      
    		 <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>
    	
      
      <servlet>
      	<servlet-name>SpringMVC</servlet-name>
      	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      	<init-param>
      		<param-name>contextConfigLocation</param-name>
      		<param-value>classpath:springmvc.xml</param-value>
      	</init-param>
      	
      	<load-on-startup>2</load-on-startup>
      </servlet>
      
      <servlet-mapping>
      	<servlet-name>SpringMVC</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>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>encodingFilter</filter-name>
    		<url-pattern>/*</url-pattern>
    	</filter-mapping>
      
      <servlet-mapping>
    		<servlet-name>default</servlet-name>
    		<url-pattern>*.js</url-pattern>
    	</servlet-mapping>
    </web-app>

#### 6.删除测试： ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDUwMjgwNA_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][20190428225336331.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDUwMjgwNA_size_16_color_FFFFFF_t_70 1]  
实现了

[2019042822354770.png]: /images/20220212/8e940998008941718f0afa5e2482885a.png
[2019042822364244.png]: /images/20220212/ef331b4c3d2940b6a6918b3a7f961851.png
[20190428224803453.png]: /images/20220212/fbf084f457cd459ea72c4200027c2a58.png
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[20190428225336331.png]: /images/20220212/bb932f4238a94cb1b3dfecc1a58c2ef4.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDUwMjgwNA_size_16_color_FFFFFF_t_70 1]: /images/20220212/ff7dd10abd2f4983b3cb672c6bac83fb.png