SSM整合练习

SSM项目整合复习记录来自黑马程序员的视频：连接ssm整合demo1、创建Maven2、导入Maven坐标<dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.11</version

一个有梦有戏的人

375人浏览 · 2022-01-17 14:23:05

一个有梦有戏的人 · 2022-01-17 14:23:05 发布

SSM项目整合复习记录

来自黑马程序员的视频：连接ssm整合b站视频

1、创建Maven

2、导入Maven坐标

<dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
      <scope>provided</scope>
    </dependency>
    <!-- Servlet API -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>3.0-alpha-1</version>
      <scope>provided</scope>
    </dependency>

    <!--  Spring Web -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.0.3.RELEASE</version>
    </dependency>


    <!-- Spring SpringMVC -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.0.3.RELEASE</version>
    </dependency>

    <!-- Spring JDBC -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.0.3.RELEASE</version>
    </dependency>

    <!-- Spring Aspects -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>5.0.3.RELEASE</version>
    </dependency>

    <!-- MyBatis -->
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.5</version>
    </dependency>

    <!-- MyBatis Spring -->
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>

    <!-- C3P0 -->
    <!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>

    <!-- MySQL驱动包 -->
    <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.45</version>
    </dependency>

    <!-- JSTL -->
    <!-- https://mvnrepository.com/artifact/jstl/jstl -->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.googlecode.json-simple/json-simple -->
    <dependency>
      <groupId>com.googlecode.json-simple</groupId>
      <artifactId>json-simple</artifactId>
      <version>1.1</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.3</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
    <dependency>
      <groupId>com.google.code.gson</groupId>
      <artifactId>gson</artifactId>
      <version>2.8.2</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>3.7</version>
    </dependency>
  </dependencies>

3、开始，创建实体类

在java下创建放实体类的包，添加实体

package com.lyd.domain;

public class Account {
    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;
    }
}

4、创建Accountmapper接口

package com.lyd.mapper;

import com.lyd.domain.Account;

import java.util.List;

public interface AccountMapper {
    public void save(Account account);
    public List<Account> findAll();
}

5、服务层Servic—AccountService接口以及实现AccountServiceImpl的实现

public interface AccountService {
    public void save();
    public List<Account> findAll();
}
//impl
@Service("accountService")
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountMapper accountMapper;//已经放入spring容器，可以直接注入
    @Override
    public void save(Account account) {
        accountMapper.save(account);
    }

    @Override
    public List<Account> findAll() {
        return accountMapper.findAll();
    }
}

6、编写web层 AcountController

@Controller
@RequestMapping("/account")
public class AccountController {
    @Autowired
    private AccountService accountService;
    @RequestMapping(value = "/save",produces = "text/html;charset=UTF-8")
    @ResponseBody
    public String save(Account account){
        accountService.save(account);
        return "保存成功";
    }

    @RequestMapping(value = "/findAll")
    public ModelAndView findAll(){
        List<Account> accountList = accountService.findAll();
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("accountList",accountList);
        modelAndView.setViewName("accountList");
        return modelAndView;
    }
}

7、编写页面添加页面和显示页面

save.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>保存页面</title>
</head>
<body>
    <h1>添加账户金额</h1>
    <form name="accountForm" action="${pageContext.request.contextPath}/account/save" 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"><br>
    </form>
</body>
</html>

accountList.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <h1>展示用户数据</h1>
    <table border="1">
        <tr>
            <th>账户id</th>
            <th>账户名称</th>
            <th>账户密码</th>
        </tr>
        <c:forEach items="${accountList}" var="account">
            <tr>
                <td>${account.id}</td>
                <td>${account.name}</td>
                <td>${account.money}</td>
            </tr>
        </c:forEach>

    </table>
</body>
</html>

8、编写配置文件

Spring配置文件：applicationContext.xml
SpringMVC配置文件：spring-mvc.xml
Mybatis映射文件：AccountMapper.xml
Mybatis核心文件：sqlMapConfig.xml
数据库连接信息文件：jdbc.properties
Web.xml文件：web.xml
日志文件：log4j.xml

①jdbc.properties

jdbc.jdbcUrl = jdbc:mysql://localhost:3306/news
jdbc.driverClass = com.mysql.jdbc.Driver
jdbc.user = root
jdbc.password = root

②log4j.xml

# Global logging configuration
log4j.rootLogger=ERROR, stdout
# MyBatis logging configuration...
log4j.logger.com.ssm=DEBUG
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

③spring配置：applicationContext.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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
    <!--  扫描文件  -->
    <context:component-scan base-package="com.lyd">
        <!--    排除控制类的扫描    -->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!-- `````````````````````以下mybaties整合spring，吧配置放到这```````````````````````````````````````````````````````-->
    <!--  加载jdbc文件  -->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <!--  配置数据源  -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driverClass}"/>
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>
        <property name="user" value="${jdbc.user}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!-- 配置SqlSessionFactory -->
    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--  加载mybatis核心文件 -->
        <property name="configLocation" value="classpath:sqlMapConfig-spring.xml"/>
    </bean>

    <!--  扫描mapper包 为mapper提供创建类  -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.lyd.mapper"/>
    </bean>
</beans>

④配置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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="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/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!--  组件扫描 主要扫描controller  -->
    <context:component-scan base-package="com.lyd.controller"/>
    <!--  配置mvc注解驱动  -->
    <mvc:annotation-driven/>
    <bean id="resourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
    <!--  开放静态资源访问权限  -->
    <mvc:default-servlet-handler/>
</beans>

⑤配置AccountMapper.xml

可以用mapper的方式，也可以用注解的方式，@Select…

<?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.lyd.mapper.AccountMapper">
    <insert id="save" parameterType="account">
        insert into account value (#{id},#{name},#{money})
    </insert>
    <select id="findAll" resultType="account">
        select * from account
    </select>
</mapper>

结构图：
在这里插入图片描述

主意此处的创建要对应，而且新建需要用com/lyd/mapper,而非com.lyd.mapper 详情看解决org.apache.ibatis.binding.BindingException: Invalid bound statement (not found)问题

⑥sqlMapConfig.xml（mybatis未整合到spring）

<?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>
<!--  可以不用已经配置到了spring中，需要sqlMapConfig-spring  -->
<!--    加载jdbc-->
    <properties resource="jdbc.properties"/>
    <!-- 定义别名 -->
    <typeAliases>
        <package name="com.lyd.domain"/>
    </typeAliases>
    <!-- 环境 -->
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="${jdbc.driverClass}"/>
                <property name="url" value="${jdbc.jdbcUrl}"/>
                <property name="username" value="${jdbc.user}"/>
                <property name="password" value="${jdbc.password}"/>
            </dataSource>
        </environment>
    </environments>
    <!--    加载映射-->
    <mappers>
        <package name="com.lyd.mapper"/>
    </mappers>
</configuration>

整合到spring 的 sqlMapConfig-spring.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>

    <!-- 定义别名 -->
    <typeAliases>
        <package name="com.lyd.domain"/>
    </typeAliases>
</configuration>

⑦web.xml

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         id="WebApp_ID" version="3.1">
<!-- spring 监听器 -->
    <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>
<!-- springmvc前端控制器 -->
    <servlet>
        <servlet-name>DispatcherServlet</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>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
<!-- 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>
</web-app>

※将Spring整合到Mybatis的配置

在spring中配置将sqlMapConfig配置转移到applicationContext.xml配置里面，将SQLSessionFactory配置到Spring容器中

<!--  加载jdbc文件  -->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <!--  配置数据源  -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driverClass}"/>
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>
        <property name="user" value="${jdbc.user}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!-- 配置SqlSessionFactory -->
    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--  加载mybatis核心文件 -->
        <property name="configLocation" value="classpath:sqlMapConfig-spring.xml"/>
    </bean>

在applicationContext.xml配置声明式事务控制实现

<!--声明式事务管理-->
    <!--平台事务管理器-->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置事务增强-->
    <tx:advice id="txAdvice">
        <tx:attributes>
            <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>
    <!--事务的aop植入-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.lyd.service.impl.*.*(..))"/>
    </aop:config>
    <!-- 启用基于注解的声明式事务管理配置 -->
    <tx:annotation-driven transaction-manager="transactionManager" />