ssm 简单整合

超、凢脫俗 2021-10-18 10:54 324阅读 0赞

## ssm整合个人小结 ##

个人感觉SSM 比SSH 整合跟简单 ，spring 和Hiberbate 整合和 spring --myBatis 差不多，但sturuts2 比 spring mvc 复杂 ，因为spring mvc 和 spring本身就是一体的

不用过多的配置。

无论什么框架整合spring ,控制权都在spring 中\*\*

**myBatis-----spring--------spring mvc**

**myBatis-----spring:**

> 需要整合：将MyBatis的SqlSessionFactory 交给Spring

spring-----spring mvc:

> 就是将Spring - SpringMVC 各自配置一遍

#### 0,进行整合的第一步 ####

下载所需的jar包

1.jar  
mybatis-spring.jar

spring-tx.jar

pring-jdbc.jar

spring-expression.jar  
spring-context-support.jar

spring-core.jar

spring-context.jar  
spring-beans.jar

spring-aop.jar

spring-web.jar

commons-logging.jar

commons-dbcp.jar

ojdbc.jar/或者mysql.jar

mybatis.jar

log4j.jar

commons-pool.jar

#### 1,整合spring 和 myBatis ####

**myBatis 本来需要: conf.xml 可以被spring 的applicationContext.xml 包含在一起**

**conf.xml（数据源、mapper.xml） --可省，将该文件中的配置 全部交由spring管理**

**通过mapper.xml 将 类，表 建立映射关系**

`applicationContext.xml:`

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    		<property name="sqlSessionFactoryBeanName"
    			value="sqlSessionFactory" />
    		<property name="basePackage" value="test.mapper" />
    		
    	</bean>
    	
    	
    	<bean id="dataSource"
    		class="org.apache.commons.dbcp.BasicDataSource">
    		<property name="driverClassName" value="${driver}"></property>
    		<property name="url" value="${url}"></property>
    		<property name="username" value="${username}"></property>
    		<property name="password" value="${password}"></property>
    	</bean>
    	
    	
    	
    	<bean id="sqlSessionFactory"
    		class="org.mybatis.spring.SqlSessionFactoryBean">
    		<property name="dataSource" ref="dataSource"></property>
    		
    		<property name="mapperLocations"
    			value="classpath:test/mapper/*.xml"></property>
    	</bean>\

#### 2，整合spring mvc 和 spring ####

创建 appliactionContext-controller.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:mvc="http://www.springframework.org/schema/mvc"
    	xmlns:context="http://www.springframework.org/schema/context"
    	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="test.controller"/>
    	
    	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    	 	<property name="prefix" value="/views/"/>
    	 	<property name="suffix" value=".jsp"/>
    	</bean>
    	
    	<mvc:annotation-driven></mvc:annotation-driven>
    </beans>

#### 3，ssm 完全整合 ####

\[外链图片转存失败(img-KQovMLBb-1565513778473)(C:\\Users\\11276\\AppData\\Roaming\\Typora\\typora-user-images\\1565511666388.png)\]

db.properties:数据库连接数据

driver=com.mysql.jdbc.Driver
    url=jdbc:mysql:///mybatis
    username=root
    password=1024

log4j.properties:日志配置文件：

log4j.rootLogger=DEBUG, stdout
    log4j.appender.stdout=org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
    log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

appliactionContext.xml:spring 配置文件：

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    	
    	<bean id="config"
    class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
    		<property name="locations">
    			<array>
    				<value>classpath:db.properties</value>
    			</array>
    		</property>
    	</bean>
    	
    	
    	
    	<bean id="studentService"
    		class="test.serviceimpl.studentServiceimpl">
    		<property name="studentMapper" ref="studentMapper" />
    	</bean>
    	
    	
    	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    		<property name="sqlSessionFactoryBeanName"
    			value="sqlSessionFactory" />
    		<property name="basePackage" value="test.mapper" />
    		
    	</bean>
    	
    	<bean id="dataSource"
    		class="org.apache.commons.dbcp.BasicDataSource">
    		<property name="driverClassName" value="${driver}"></property>
    		<property name="url" value="${url}"></property>
    		<property name="username" value="${username}"></property>
    		<property name="password" value="${password}"></property>
    	</bean>
    	
    	
    	
    	<bean id="sqlSessionFactory"
    		class="org.mybatis.spring.SqlSessionFactoryBean">
    		<property name="dataSource" ref="dataSource"></property>
    		
    		<property name="mapperLocations"
    			value="classpath:test/mapper/*.xml"></property>
    	</bean>
    </beans>

appliactionContext-controller.xml:spring mvc 配置文件：

<?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:mvc="http://www.springframework.org/schema/mvc"
    	xmlns:context="http://www.springframework.org/schema/context"
    	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="test.controller"/>
    	
    	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    	 	<property name="prefix" value="/views/"/>
    	 	<property name="suffix" value=".jsp"/>
    	</bean>
    	
    	<mvc:annotation-driven></mvc:annotation-driven>
    </beans>

剩下的：

\[外链图片转存失败(img-yBRFYyB1-1565513778474)(C:\\Users\\11276\\AppData\\Roaming\\Typora\\typora-user-images\\1565512148585.png)\]

以上是web 的3层架构：

test.mapper:就是以前的Dao.整合后mapper不用实现接口，因为

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    		<property name="sqlSessionFactoryBeanName"
    			value="sqlSessionFactory" />
    		<property name="basePackage" value="test.mapper" />

调用的时候注入方式：

其他按照ssh中：contorller----service-----dao-----db

#### 4，测试SSM 是否成功 ####

案例：查询Student 中的一号学生的信息：

<?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="test.mapper.studentMapper">
    	<select id="queryStudentByStuno" parameterType="int" 			resultType="test.domain.student">
    		select * from student where stuno = #{ stuNo}
    	</select>
    	<select id="addStudent" parameterType="test.domain.student" >
    		insert into student(stuno,stuname,stuage) values(#{ stuNo},#{ stuName},#{ stuAge})
    	</select>
    </mapper>

contorller----service-----dao-----db

studentContorlle.java:

package test.controller;
    
    import java.util.Map;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Qualifier;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    import test.domain.student;
    import test.service.studentService;
    @RequestMapping("controller")
    @Controller
    public class studentContorller { 
    	@Autowired//自动装配
    	@Qualifier("studentService")//根据名字进行自动装配
    	private studentService studentService;
    
    	public void setStudentService(studentService studentService) { 
    		this.studentService = studentService;
    	}	
    	@RequestMapping("queryStudentByNo/{stuNo}")
    	public String queryStudentByNo(@PathVariable("stuNo") Integer stuNo ,Map<String, Object> map) { 
    		student student = studentService.queryStudentByStuno(stuNo);
    		map.put("student", student);
    		return "result";
    	}
    }

index.jsp: 开始页面

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
    </head>
    <body>
    	<a href="controller/queryStudentByNo/1">一号学生</a>
    </body>
    </html>

result.jsp:转页面

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
        
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
    </head>
    <body>
    	${ requestScope.student.stuNo}//el
    	${ requestScope.student.stuName}
    	${ requestScope.student.stuAge}
    </body>
    </html>

查询结果：!\[1565513646824\](C:\\Users\\11276\\AppData\\Roaming\\Typora\\typora-user-images\\1565513646824.png

2019.8.11