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整合SSM纯干货（黑马视频配套改编）

2021-05-07 16:58:07  阅读：155  来源： 互联网

标签：findAll log4j springframework 黑马 SSM 干货 import org public


目录

标题搭建整合SSM环境

整合说明：SSM整合可以使用多种方式，咱们会选择XML + 注解的方式

整合的思路

  1. 先搭建整合的环境

  2. 先把Spring的配置搭建完成

  3. 再使用Spring整合SpringMVC框架

  4. 最后使用Spring整合MyBatis框架

自己随便建个数据库一会测试用

create database ssm; use ssm; 
create table account(
	id int primary key auto_increment,
	name varchar(20),
	money double 
);

1 .导入依赖(总的整合依赖)

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <spring.version>5.0.2.RELEASE</spring.version>
    <slf4j.version>1.6.6</slf4j.version>
    <log4j.version>1.2.12</log4j.version>
    <mysql.version>5.1.6</mysql.version>
    <mybatis.version>3.4.5</mybatis.version>
  </properties>

  <dependencies>
    <!-- spring -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.6.8</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</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-web</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!--spring整合junit-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!-- 为JDBC、Hibernate、JDO、JPA等提供的一致的声明式和编程式事务管理-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>compile</scope>
    </dependency>

    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

    <!-- log end -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>

    <!-- druid -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.2.4</version>
    </dependency>

    <!-- log start -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>${log4j.version}</version>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
  </dependencies>

  <build>
    <finalName>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>

2 配置spring

<?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:aop="http://www.springframework.org/schema/aop"
       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/aop
	http://www.springframework.org/schema/aop/spring-aop.xsd
	http://www.springframework.org/schema/tx
	http://www.springframework.org/schema/tx/spring-tx.xsd">
    
    <!--开启注解的扫描，希望处理service和dao，controller不需要Spring框架去处理-->
    <context:component-scan base-package="cn.itcast">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>


</beans>

建立目录结构

image-20210507093624195

AccountDao.java

@Repository //持久层注解
public interface AccountDao {

    // 查询所有账户
	//@Select("select * from account")  //还没有配置mybatis所以暂时注释起来
    public List<Account> findAll();
}

Service.java

@Service("accountService")
public class AccountServiceImpl implements AccountService{

    @Autowired
    private AccountDao accountDao;

    public void findAll() {
        System.out.println("业务层：查询所有账户...");
 		//return accountDao.findAll();     //还没有配置mybatis所以暂时注释起来
    }
 }

log4j.properties

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=info, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=d:\axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

TestSpring.java

package cn.itcast.test;
import cn.itcast.service.AccountService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestSpring {
    @Test
    public  void run1(){
        //1 加载配置
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
        //2 获取对象
        AccountService accountService = (AccountService) ac.getBean("accountService");
        //3 调用方法
        accountService.findAll();
    }
}


结果：
	表现层查询出页面...

3 搭建和测试 SpringMVC的开发环境

  1. 在web.xml中配置DispatcherServlet前端控制器

web.xml

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <!-- 1。 在web.xml中配置DispatcherServlet前端控制器-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--    加载springmvc.xml配置文件-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!--    启动服务器创建该servlet-->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <!--  配置前端控制器映射-->
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
    
  <!-- 2. 在web.xml中配置DispatcherServlet过滤器解决中文乱码-->
  <filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <!--    配置字符字符集-->
    <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>

</web-app>
  1. 创建springmvc.xml的配置文件，编写配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       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
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 1. 扫描controller的注解，其他不扫描-->
    <context:component-scan base-package="cn.itcast">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
        
    <!-- 2. 配置视图解析器对象  记得在"/WEB-INF/pages/创建一个jsp页面  -->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
        
    <!-- 3. 过滤静态资源-->
    <mvc:resources mapping="/css/**" location="/css/"></mvc:resources>
    <mvc:resources mapping="/js/**" location="/js/"></mvc:resources>
    <mvc:resources mapping="/images/**" location="/images/"></mvc:resources>
        
    <!-- 4. 开启springmvc注解的支持-->
 <mvc:annotation-driven></mvc:annotation-driven>
</beans>

3 .创建AccountController.java类，编写方法，进行测试

@Controller
@RequestMapping("/account")
public class AccountController {
    @RequestMapping("/findAll")
    public  String findAll(){
        System.out.println("表现层查询出页面...");
        return "list";
    }
 }

4 . 在index页面访问测试

<a href="account/findAll">查询所有</a>

4 Spring整合SpringMVC的框架

目的：在controller中能成功的调用service对象中的方法。

在项目启动的时候，就去加载applicationContext.xml的配置文件，在web.xml中配置

ContextLoaderListener监听器（该监听器只能加载WEB-INF目录下的applicationContext.xml的配置文

件）

1 . ！ 在配置前端控制器dispatcherServlet前配置监听器

<!--  配置spring的监听器，默认只加载WEB-INF目录下的applicationContext.xml配置文件-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

2 .在AccountController使用自动注入

业务层：查询所有账户...
表现层查询出页面...
@Controller
@RequestMapping("/account")
public class AccountController {
    @Autowired
    private  AccountService accountService;

    @RequestMapping("/findAll")
    public  String findAll(){
        accountService.findAll();
        System.out.println("表现层查询出页面...");
        return "list";
    }
}
结果：
    业务层：查询所有账户...
	表现层查询出页面...

其实不用配置监听器也可以调用，但为啥要配置呢？？：

1 如果只有 Spring mvc 的一个 Servlet，listener 可以不用。
2 但是如果用了Shiro 等，Shiro 用到的 Spring 的配置必须在 listener 里加载。
3 一般 Dao, Service 的 Spring 配置都会在 listener 里加载，因为可能会在多个 Servlet 里用到，因为父子 Context 的可见性问题，防止重复加载所以在 listener 里加载。
 所以，有时可用可不用，有时必用，具体看情况

5 搭建和测试 MyBatis框架的开发环境

  1. 搭建和测试MyBatis的环境
  2. 在web项目中编写SqlMapConfig.xml的配置文件，编写核心配置文件
<?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">

<!--mybatis核心配置-->
<configuration>
    <environments default="mysql">
        <environment id="mysql">
            <transactionManager type="JDBC"></transactionManager>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/ssm"/>
                <property name="username" value="root"/>
                <property name="password" value="root"/>
            </dataSource>
        </environment>
    </environments>
    <!-- 使用的是注解 -->
    <mappers>
<!--        <mapper class="cn.itcast.dao.AccountDao"></mapper>-->
        <package name="cn.itcast.dao"/>
    </mappers>
</configuration>

AccountDao.java 加入mybatis注解

package cn.itcast.dao;

import cn.itcast.modle.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import java.util.List;
/**
 * 帐户dao接口
 */
@Repository
public interface AccountDao {
    // 查询所有账户
    @Select("select * from account")
    public List<Account> findAll();

    // 保存帐户信息
    @Insert("insert into account (name,money) values (#{name},#{money})")
    public void saveAccount(Account account);
}

创建测试 TestMybatis.java

package cn.itcast.test;
import cn.itcast.dao.AccountDao;
import cn.itcast.modle.Account;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;
import java.io.InputStream;
import java.util.List;

public class TestMybatis {
    @Test
    public  void run1() throws Exception{
        //1 加载配置文件
        InputStream in = Resources.getResourceAsStream("SqlMapConfig.xml");
        //2 创建sqlSessionFactory对象
        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
        //3 创建Sqlsession对象
        SqlSession session = factory.openSession();
        //5 获取到代理对象
        AccountDao accountDao = session.getMapper(AccountDao.class);
        //6  查询数据
        List<Account> accountList = accountDao.findAll();
        for (Account a :accountList) {
            System.out.println(a);
        }
        //7  关闭资源
        session.close();
        in.close();
    }
}

结果：
    Account{id=1, name='小明', money=11.0}
	Account{id=2, name='小刚', money=44.0}

6 Spring整合MyBatis框架

  1. 目的：把SqlMapConfig.xml配置文件中的内容配置到applicationContext.xml配置文件中（可以删掉SqlMapConfig.xml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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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/aop
	http://www.springframework.org/schema/aop/spring-aop.xsd
	http://www.springframework.org/schema/tx
	http://www.springframework.org/schema/tx/spring-tx.xsd">
    
    <!--开启注解的扫描，希望处理service和dao，controller不需要Spring框架去处理-->
    <context:component-scan base-package="cn.itcast">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

<!--    配置driud的连接池对象-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/ssm"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>
<!--    配置Sqlsession的工厂-->
    <bean id="SqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
<!--    配置扫描dao的包-->
    <bean id="mapperSacnner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.itcast.dao"></property>
    </bean>
</beans>

  1. 在AccountDao接口中添加@Repository注解

  2. 在service中注入dao对象，进行测试

AccountDao.java

package cn.itcast.dao;
import cn.itcast.modle.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import java.util.List;

/**
 * 帐户dao接口
 */
@Repository
public interface AccountDao {
    // 查询所有账户
    @Select("select * from account")
    public List<Account> findAll();

    // 保存帐户信息
    @Insert("insert into account (name,money) values (#{name},#{money})")
    public void saveAccount(Account account);
}

Service.java

package cn.itcast.service.impl;
import cn.itcast.dao.AccountDao;
import cn.itcast.modle.Account;
import cn.itcast.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;

@Service("accountService")
public class AccountServiceImpl implements AccountService{

    @Autowired
    private AccountDao accountDao;

    public List<Account> findAll() {
        System.out.println("业务层：查询所有账户...");
        return accountDao.findAll();
    }

    public void saveAccount(Account account) {
        System.out.println("业务层：保存帐户...");
        accountDao.saveAccount(account);
    }
}

AccountController.java

package cn.itcast.controller;

import cn.itcast.modle.Account;
import cn.itcast.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

/**
 * 帐户web
 */
@Controller
@RequestMapping("/account")
public class AccountController {
    @Autowired
    private AccountService accountService;

    @RequestMapping("/findAll")
    public String findAll(Model model){
        System.out.println("表现层：查询所有账户...");
        //调用service的方法
        List<Account> list = accountService.findAll();
        model.addAttribute("list",list);
        return "list";
    }

    /**
     * 保存
     * @return
     */
    @RequestMapping("/save")
    public void save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
        accountService.saveAccount(account);
        //请求的项目路径+/account/findAll
        response.sendRedirect(request.getContextPath()+"/account/findAll");
        return;
    }
}

编写一个展示数据库信息的页面

list.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
     <h3>查询所有信息</h3>
        <c:forEach items="${list}" var="account">
            ${account.name}
        </c:forEach>
</body>
</html>

4 . 在index页面访问测试

<a href="account/findAll">查询所有</a>

结果：
小明  小刚 （数据库中存的数据）

  1. 配置Spring的声明式事务管理

    在applicationContext.xml中的beans中加入事务配置

<!-- 配置spring框架事务管理-->
    <!-- 配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置事务通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
            <tx:attributes>
                <tx:method name="find" read-only="true"/>
                <tx:method name="*" isolation="DEFAULT" />
            </tx:attributes>
     </tx:advice>
    <!-- 设置aop增强-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.itcast.service.impl.*ServiceImpl.*(..))"/>
    </aop:config>

  1. 配置Spring的声明式事务管理

    在applicationContext.xml中的beans中加入事务配置

<!-- 配置spring框架事务管理-->
    <!-- 配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置事务通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
            <tx:attributes>
                <tx:method name="find" read-only="true"/>
                <tx:method name="*" isolation="DEFAULT" />
            </tx:attributes>
     </tx:advice>
    <!-- 设置aop增强-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.itcast.service.impl.*ServiceImpl.*(..))"/>
    </aop:config>

标签：findAll,log4j,springframework,黑马,SSM,干货,import,org,public
来源： https://blog.csdn.net/weixin_45894479/article/details/116496911

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