SSM 整合详细步骤

2022-08-27 14:12:30 浏览数 (1)

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SSM 整合

第一章环境准备

1、创建数据库和表结构

代码语言:javascript复制
create database ssm;
create table account(
id int primary key auto_increment,
name varchar(100),
money double(7,2),
);

2、创建 Maven 工程

  1. 创建ssm_parent父工程(打包方式选择pom,必须的)
  2. 创建ssm_web子模块(打包方式是war包)
  3. 创建ssm_service子模块(打包方式是jar包)
  4. 创建ssm_dao子模块(打包方式是jar包)
  5. 创建ssm_domain子模块(打包方式是jar包)
  6. web依赖于service,service依赖于dao,dao依赖于domain
  7. 在ssm_parent的pom.xml文件中引入坐标依赖

pom.xml:

代码语言:javascript复制
<?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>com.yg</groupId>
    <artifactId>ssm</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>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>
        <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>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <!-- 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>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</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-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 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>${ 
   slf4j.version}</version>
        </dependency> <!-- log end -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${ 
   mybatis.version}</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
            <type>jar</type>
            <scope>compile</scope>
        </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>3.1.0</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>3.8.0</version>
                </plugin>
                <plugin>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>2.22.1</version>
                </plugin>
                <plugin>
                    <artifactId>maven-war-plugin</artifactId>
                    <version>3.2.2</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>
  1. 部署ssm_web的项目,只要把ssm_web项目加入到tomcat服务器中即可

3、编写实体类

代码语言:javascript复制
package com.yg.daomain;

import java.io.Serializable;

public class Account implements Serializable { 
   
    private Integer id;
    private String name;
    private Double money;

    public Integer getId() { 
   
        return id;
    }

    public void setId(Integer id) { 
   
        this.id = id;
    }

    public String getName() { 
   
        return name;
    }

    public void setName(String name) { 
   
        this.name = name;
    }

    public Double getMoney() { 
   
        return money;
    }

    public void setMoney(Double money) { 
   
        this.money = money;
    }

    @Override
    public String toString() { 
   
        return "Account{"  
                "id="   id  
                ", name='"   name   '''  
                ", money="   money  
                '}';
    }
}

4、编写业务层接口和实现类

代码语言:javascript复制
package com.yg.service;

import com.yg.daomain.Account;

import java.util.List;

public interface IAccountService { 
   
    public void saveAccount(Account account);
    public List<Account> findAll();
}
代码语言:javascript复制
package cn.itcast.service.impl; 
import java.util.List;
 import org.springframework.stereotype.Service; 
 import cn.itcast.dao.AccountDao; 
 import cn.itcast.domain.Account; 
 import cn.itcast.service.AccountService;
  @Service("accountService")
  public class AccountServiceImpl implements AccountService { 
    
  private AccountDao account;
  public void saveAccount(Account account) { 
    
    }
  public List<Account> findAll() { 
    
  System.out.println("业务层:查询所有账户..."); 
  return null; }
     }

5、编写持久层接口

代码语言:javascript复制
package com.yg.dao;

import com.yg.daomain.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;

import java.util.List;
public interface IAccountDao { 
   
    public void saveAccount(Account account);
    public List<Account> findAll();
}

第二章 整合步骤

1、保证 Spring 框架在 web 工程中独立运行

第一步:编写 spring 配置文件并导入约束
1、在ssm_web项目中创建applicationContext.xml的配置文件,编写具体的配置信息
代码语言:javascript复制
<?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">
    <!--开启注解扫描,要扫描的是service和dao层的注解。要忽略web层让springmvc去管理-->
    <context:component-scan base-package="com.yg">
        <!--配置要忽略的注解-->
   <context:exclude-filter type="annotation" 
   expression="org.springframework.stereotype.Controller"></context:exclude-filter>
    </context:component-scan>
第二步:使用注解配置业务层和持久层
代码语言:javascript复制
import com.yg.dao.IAccountDao;
import com.yg.daomain.Account;
import com.yg.service.IAccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/** * 账户的业务层实现类 */
@Service("accountService")
public class AccountServiceImpl implements IAccountService { 
   
    @Autowired
    private IAccountDao accountDao;
    @Override
    public List<Account> findAllAccount() { 
   
        return accountDao.findAllAccount(); }
    @Override
    public void saveAccount(Account account) { 
   
        accountDao.saveAccount
    } }

持久层实现类代码: 此时不要做任何操作,就输出一句话。目的是测试 spring 框架搭建的结果。

代码语言:javascript复制
import com.yg.dao.IAccountDao;
import com.yg.daomain.Account;
import org.springframework.stereotype.Repository;

import java.util.List;

/** * 账户的持久层实现类 */
@Repository("accountDao")
public class AccountDaoImpl implements IAccountDao { 
   
    @Override
    public List<Account> findAllAccount() { 
   
        System.out.println("查询了所有账户");
        return null; }@Override
    public void saveAccount(Account account) { 
   
        System.out.println("保存了账户");
    } }
}
第三步在ssm_web项目中编写测试方法,进行测试
代码语言:javascript复制
package com.yg.test;

import com.yg.service.IAccountService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class ServiceTest { 
   
    @Test
    public void testspring() { 
   
        ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
        IAccountService as = (IAccountService) ac.getBean("accountService");
        as.findAll();
    }

}

运行结果:

2、保证 SpringMVC 在 web 工程中独立运行

第一步:在 web.xml 中配置核心控制器(DispatcherServlet)
1. 在web.xml中配置DispatcherServlet前端控制器
代码语言:javascript复制
  <!--配偶之前端控制器:服务启动必须加载,需要加载的springmvc.xml配置文件-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--配置初始化参数,创建完DispatcherServlet对象加载springmvc.xml配置文件-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!--服务启动的时候,让DispatcherServlet对象创建-->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <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
代码语言:javascript复制
<!--配置解决中文乱码过滤器-->
  <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> 
第二步: 创建springmvc.xml的配置文件,编写配置文件
代码语言:javascript复制
<?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">
    <!--扫描controller的注解,别的不扫描-->
    <context:component-scan base-package="com.yg" use-default-filters="false">
        <context:include-filter type="annotation"
                                expression="org.springframework.stereotype.Controller"></context:include-filter>
    </context:component-scan>
    <!--配置视图解析器-->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!--JSP文件所在的目录-->
        <property name="prefix" value="/WEB-INF/pages/"/>
        <!--文件的后缀名-->
        <property name="suffix" value=".jsp"/>
    </bean>
    <!--设置静态资源不过滤-->
    <mvc:resources location="/css/" mapping="/css/**"/>
    <mvc:resources location="/images/" mapping="/images/**"/>
    <mvc:resources location="/js/" mapping="/js/**"/>
    <!--开启对springmvc的注解支持-->
    <mvc:annotation-driven/>
</beans>

第三步:编写 Controller 和 jsp 页面

jsp代码:

代码语言:javascript复制
<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>主页</title>
</head>
<body><a href="account/findAllAccount">访问查询账户</a>
</body>
</html>

控制器代码:

代码语言:javascript复制
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

/** * 账户的控制器 */
@Controller("accountController")
@RequestMapping("/account")
public class AccountController { 
   
    @RequestMapping("/findAllAccount")
    public String findAllAccount() { 
   
        System.out.println("执行了查询账户");
        return "success";
    }
}

运行结果:

3、Spring整合SpringMVC的框架

第一步:配置监听器实现启动服务创建容器

1. 目的:在controller中能成功的调用service对象中的方法。

2. 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)。为了能加载resources下的applicationContext.xml的配置文件所以在web.xml下 在web.xml加:

代码语言:javascript复制
  <!-- 配置 spring 提供的监听器,用于启动服务时加载容器 。
该间监听器只能加载 WEB-INF 目录中名称为 applicationContext.xml 的配置文件 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!--配置加载类路径的配置文件-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

3. 在controller中注入service对象,调用service对象的方法进行测试

代码语言:javascript复制
package cn.itcast.controller;

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

@Controller
@RequestMapping("/account")
public class AccountController { 
   
    @Autowired
    private AccountService accoutService;

    /*** 查询所有的数据 * @return */
    @RequestMapping("/findAll")
    public String findAll() { 
   
        System.out.println("表现层:查询所有账户...");
        accoutService.findAll();
        return "list";
    }
}

4、保证 MyBatis 框架在 web 工程中独立运行

第一步:编写 AccountDao 映射配置文件

方法一: 注意:我们使用代理 dao 的方式来操作持久层,所以此处 Dao 的实现类就是多余的了。

代码语言:javascript复制
<?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.itheima.dao.IAccountDao">
    <!-- 查询所有账户 -->
    <select id="findAll" resultType="com.itheima.domain.Account">
        select * from account
    </select>
    <!-- 新增账户 -->
    <insert id="save" parameterType="com.itheima.domain.Account">
        insert into account(name,money) values(#{ 
   name},#{ 
   money});
    </insert>
</mapper>

方法二:在AccountDao接口的方法上添加注解,编写SQL语句

代码语言:javascript复制
package cn.itcast.dao;

import java.util.List;

import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import cn.itcast.domain.Account;

public interface AccountDao { 
   
    @Insert(value = "insert into account (name,money) values (#{name},#{money})")
    public void saveAccount(Account account);

    @Select("select * from account")
    public List<Account> findAll();
}
第二步:编写 SqlMapConfig 配置文件
代码语言:javascript复制
<?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>
    <properties resource="jdbcConfig.properties"></properties>
    <environments default="mysql">
        <environment id="mysql">
            <transactionManager type="JDBC"></transactionManager>
            <dataSource type="pooled">
                <property name="driver" value="${jdbc.driver}"/>
                <property name="url" value="${jdbc.url}"/>
                <property name="username" value="${jdbc.username}"/>
                <property name="password" value="${jdbc.password}"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper resource="com/itheima/dao/AccountDao.xml"/>
    </mappers>
</configuration>
properties 文件中的内容:
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/db1
jdbc.username=root
jdbc.password=admin
第三步:测试运行结果
代码语言:javascript复制
package com.yg.test;

import com.yg.dao.IAccountDao;
import com.yg.daomain.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 javax.annotation.Resource;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;

public class Mybatistest { 
   
    @Test
    public void mybatistest() throws Exception { 
   
        //1 加载配置文件
        InputStream inputStream = Resources.getResourceAsStream("SqlMapConfig.xml");
        //2 创建工厂
        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(inputStream);
        //3 创建sqlSession对象
        SqlSession session = factory.openSession();
        //4 获取代理对象
        IAccountDao dao = session.getMapper(IAccountDao.class);
        //5 调用查询方法
        List<Account> accounts = dao.findAll();
        for (Account account : accounts) { 
   
            System.out.println(account);
        }
        //6 释放资源
        session.close();
        inputStream.close();

    }
}

5、 Spring整合MyBatis框架

整合思路:

把 mybatis 配置文件(SqlMapConfig.xml)中内容配置到 spring 配置文件中 同时,把 mybatis配置文件的内容清掉。

注意: 由于我们使用的是代理 Dao 的模式,Dao 具体实现类由 MyBatis 使用代理方式创建,所以此时 mybatis 配置文件不能删。 当我们整合 spring 和 mybatis 时,mybatis 创建的 Mapper.xml 文件名必须和 Dao 接口文件名一致

1. 目的:把SqlMapConfig.xml配置文件中的内容配置到applicationContext.xml配置文件中
第一步:Spring 接管 MyBatis 的 Session 工厂
代码语言:javascript复制
<!-- 加载配置文件 --> <context:property-placeholder location="classpath:jdbcConfig.properties"/>
<!-- 配置 MyBatis 的 Session 工厂 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <!-- 数据库连接池 -->
    <property name="dataSource" ref="dataSource"/>
    <!-- 加载 mybatis 的全局配置文件 -->
    <property name="configLocation" value="classpath:SqlMapConfig.xml"/>
</bean>
<!-- 配置数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <property name="driverClass" value="${jdbc.driver}"></property>
    <property name="jdbcUrl" value="${jdbc.url}"></property>
    <property name="user" value="${jdbc.username}"></property>
    <property name="password" value="${jdbc.password}"></property>
</bean>
第二步:配置自动扫描所有 Mapper 接口和文件
代码语言:javascript复制
    <!--配置扫描的dao包-->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.yg.dao"/>
    </bean>
第三步:配置 spring 的事务
代码语言:javascript复制
<!--配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置事务的通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="*" propagation="REQUIRED" read-only="false"/>
            <tx:method name="find" propagation="SUPPORTS" read-only="true"/>
        </tx:attributes>
    </tx:advice>
    <!--配置aop-->
    <aop:config>
        <!--配置切入点表达式-->
        <aop:pointcut id="pt1" expression="execution(* com.yg.service.impl.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pt1"/>
     </aop:config>
第四步:在AccountDao接口中添加@Repository注解
代码语言:javascript复制
package com.yg.dao;

import com.yg.daomain.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;

import java.util.List;
@Repository
public interface IAccountDao { 
   
    @Insert(value="insert into account (name,money) values (#{name},#{money})")
    public void saveAccount(Account account);
    @Select("select * from account")
    public List<Account> findAll();
}
第五步:在service中注入dao对象,进行测试
代码语言:javascript复制
package com.yg.service.impl;

import com.yg.dao.IAccountDao;
import com.yg.daomain.Account;
import com.yg.service.IAccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service("accountService")
public class AccountServiceImpl implements IAccountService { 
   
    @Autowired
    private IAccountDao accountDao;

    @Override
    public void saveAccount(Account account) { 
   
        accountDao.saveAccount(account);

    }

    @Override
    public List<Account> findAll() { 
   
        System.out.println("业务层查询所有");
        return accountDao.findAll();
    }
}
第六步:测试整合结果
代码语言:javascript复制
package com.yg.test;

import com.yg.dao.IAccountDao;
import com.yg.daomain.Account;
import com.yg.service.IAccountService;
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;

import java.util.List;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { 
   "classpath:applicationContext.xml"})
public class springmybatis { 
   
    @Autowired
    private IAccountService accountService;

    @Test
    public void testfindAll() { 
   
        List<Account> list = accountService.findAll();
        System.out.println(list);
    }

    @Test
    public void testsave() { 
   
        Account account= new Account();
        account.setName("测试账号");
        account.setMoney(1234d);
        accountService.saveAccount(account);
    }

}

第三章测试 SSM 整合结果

第一步:编写测试 jsp

index.jsp:

代码语言:javascript复制
<%--
  Created by IntelliJ IDEA.
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<a href="account/findAll">查询所有</a>
<form action="/account/saveAccount" method="post">
    账户名称:<input type="text" name="name"><br/>
    账户金额:<input type="text" name="money"><br/>
    <input type="submit" value="保存">
</form>
</body>
</html>

list.jsp:

代码语言:javascript复制
<%--
  Created by IntelliJ IDEA.
  To change this template use File | Settings | File Templates.
--%>
<%@ 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>客户列表页面</title>
</head>
<body>
<table border="1" width="300px">
    <tr>
        <th>编号</th>
        <th>账户名称</th>
        <th>账户金额</th>
    </tr>
    <c:forEach items="${accounts}" var="account">
    <tr>
        <td>${ 
   account.id}</td>
        <td>${ 
   account.name}</td>
        <td>${ 
   account.money}</td>
    </tr>
    </c:forEach>
</table>
</body>
</html>

第二步:修改控制器中的方法

AccountController:

代码语言:javascript复制
package com.yg.controller;

import com.yg.daomain.Account;
import com.yg.service.IAccountService;
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 org.springframework.web.servlet.ModelAndView;

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

@Controller
@RequestMapping("/account")
public class AccountController { 
   
    @Autowired
    private IAccountService accountService;


    @RequestMapping("/findAll")
    public ModelAndView findAll(){ 
   
        System.out.println("表现层:查询所有账户...");
        // 调用service的方法
        List<Account> accounts = accountService.findAll();
        System.out.println(accounts);
        ModelAndView mv = new ModelAndView();
        mv.addObject("accounts", accounts);
        mv.setViewName("list");
        return mv;
    }

    /** * 保存 * @return */
    @RequestMapping("/saveAccount")
    public String save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException { 
   
        accountService.saveAccount(account);
        return "redirect:findAll";
    }

}

测试运行结果

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