用Maven整合SSM项目实例

 转自https://www.cnblogs.com/hujianblogs/p/8526737.html

 

             本人在学习Maven之余,为了深入了解Maven的用法,决定创建一个SSM整合实例。项目是自己实际搭建,真实可用。

  1. 技术介绍

             SSM(Spring+SpringMVC+Mybatis)

                  Spring是一种轻量级框架,这是众所周知的,开发者只需要把一些常用的如日志,事务管理在配置文件中申明,能大大降低代码的耦合,减少代码侵入。他的核心是                      IOC(控制反转)和AOP(面向切面编程),具体大家想了解深入可以上网查阅,这里不再多讲。

                  SpringMVC顾名思义就是运用Spring框架使用MVC思想实现,他的核心就是前端控制器(DispatcherServlet),它的工作原理是:

                   1、客户端发出一个http请求给web服务器,web服务器对http请求进行解析,如果匹配DispatcherServlet的请求映射路径(在web.xml中指定),web容器将请求转交给

              DispatcherServlet.

                   2、DipatcherServlet接收到这个请求之后将根据请求的信息(包括URL、Http方法、请求报文头和请求参数Cookie等)以及HandlerMapping的配置找到处理请求的处理                器(Handler)。

                   3-4、DispatcherServlet根据HandlerMapping找到对应的Handler,将处理权交给Handler(Handler将具体的处理进行封装),再由具体的HandlerAdapter对Handler进行                具体的调用。

                   5、Handler对数据处理完成以后将返回一个ModelAndView()对象给DispatcherServlet。

                   6、Handler返回的ModelAndView()只是一个逻辑视图并不是一个正式的视图,DispatcherSevlet通过ViewResolver将逻辑视图转化为真正的视图View。

                   7、Dispatcher通过model解析出ModelAndView()中的参数进行解析最终展现出完整的view并返回给客户端。

                    Mybatis是支持定制化 SQL、存储过程以及高级映射的优秀的持久层框架。MyBatis 避免了几乎所有的 JDBC 代码和手动设置参数以及获取结果集。MyBatis 可以对                      配置和原生Map使用简单的 XML 或注解,将接口和 Java 的 POJOs(Plain Old Java Objects,普通的 Java对象)映射成数据库中的记录。

  1. 数据库创建

              这里是MySQL数据库数据库表创建如下图:

              

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CREATE TABLE tb_user(
    id int(11) NOT NULL AUTO_INCREMENT,
    user_name varchar(40) NOT NULL,
    password varchar(40) NOT NULL,
    age int(4) NOT NULL,
    PRIMARY KEY(id))
     ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
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  1. SSM整合步骤

               完整项目整合如下图所示:

                            

 

 

             1.创建Maven的Web项目(这个在上一篇文章已经讲解了,这里就不再多讲)

             2.配置pom.xml,代码如下:

               

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<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>cn.temp</groupId>
  <artifactId>maven-web-demo02</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>maven-web-demo02 Maven Webapp</name>
  <url>http://maven.apache.org</url>
   <properties>    
        <srping.version>4.0.2.RELEASE</srping.version>    
        <mybatis.version>3.2.8</mybatis.version>    
        <slf4j.version>1.7.12</slf4j.version>    
        <log4j.version>1.2.17</log4j.version>    
    </properties>    
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
        <scope>provided</scope>
    </dependency>
    
     <!-- java ee包 -->    
        <dependency>    
            <groupId>javax</groupId>    
            <artifactId>javaee-api</artifactId>    
            <version>7.0</version> 
            <scope>provided</scope>   
        </dependency>    
        <!-- spring框架包 start -->    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-test</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-core</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-oxm</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-tx</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-jdbc</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-aop</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-context</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-context-support</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-expression</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-orm</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-web</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.springframework</groupId>    
            <artifactId>spring-webmvc</artifactId>    
            <version>${srping.version}</version>    
        </dependency>    
        <!-- spring框架包 end -->    
        <!-- mybatis框架包 start -->    
        <dependency>    
            <groupId>org.mybatis</groupId>    
            <artifactId>mybatis</artifactId>    
            <version>${mybatis.version}</version>    
        </dependency>    
        <dependency>    
            <groupId>org.mybatis</groupId>    
            <artifactId>mybatis-spring</artifactId>    
            <version>1.2.2</version>    
        </dependency>    
        <!-- mybatis框架包 end -->    
        <!-- 数据库驱动 -->    
        <dependency>    
            <groupId>mysql</groupId>    
            <artifactId>mysql-connector-java</artifactId>    
            <version>5.1.35</version>    
        </dependency>    
        <!-- 导入dbcp的jar包,用来在applicationContext.xml中配置数据库 -->    
        <dependency>    
            <groupId>commons-dbcp</groupId>    
            <artifactId>commons-dbcp</artifactId>    
            <version>1.4</version>    
        </dependency>    
        <!-- jstl标签类 -->    
        <dependency>    
            <groupId>jstl</groupId>    
            <artifactId>jstl</artifactId>    
            <version>1.2</version>    
        </dependency>    
        <!-- log start -->    
        <dependency>    
            <groupId>log4j</groupId>    
            <artifactId>log4j</artifactId>    
            <version>${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 -->    
        <!-- Json  -->    
        <!-- 格式化对象,方便输出日志 -->    
        <dependency>    
            <groupId>com.alibaba</groupId>    
            <artifactId>fastjson</artifactId>    
            <version>1.2.6</version>    
        </dependency>    
        <dependency>    
            <groupId>org.codehaus.jackson</groupId>    
            <artifactId>jackson-mapper-asl</artifactId>    
            <version>1.9.13</version>    
        </dependency>    
        <!-- 上传组件包 start -->    
        <dependency>    
            <groupId>commons-fileupload</groupId>    
            <artifactId>commons-fileupload</artifactId>    
            <version>1.3.1</version>    
        </dependency>    
        <dependency>    
            <groupId>commons-io</groupId>    
            <artifactId>commons-io</artifactId>    
            <version>2.4</version>    
        </dependency>    
        <dependency>    
            <groupId>commons-codec</groupId>    
            <artifactId>commons-codec</artifactId>    
            <version>1.10</version>    
        </dependency>    
        <!-- 上传组件包 end -->    
  </dependencies>
  <build>
    <finalName>maven-web-demo02</finalName>
  </build>
</project>
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3.创建jdbc.properties文件

    

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driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/orcl
username=root
password=123qweasd

initialSize=0 
maxActive=20 
maxIdle=20
minIdle=1
maxWait=60000
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4.创建日志属性文件

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#\u5B9A\u4E49LOG\u8F93\u51FA\u7EA7\u522B 
log4j.rootLogger=INFO,Console,File 
#\u5B9A\u4E49\u65E5\u5FD7\u8F93\u51FA\u76EE\u7684\u5730\u4E3A\u63A7\u5236\u53F0  
log4j.appender.Console=org.apache.log4j.ConsoleAppender 
log4j.appender.Console.Target=System.out
#\u53EF\u4EE5\u7075\u6D3B\u5730\u6307\u5B9A\u65E5\u5FD7\u8F93\u51FA\u683C\u5F0F\uFF0C\u4E0B\u9762\u4E00\u884C\u662F\u6307\u5B9A\u5177\u4F53\u7684\u683C\u5F0F  
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n

#\u6587\u4EF6\u5927\u5C0F\u5230\u8FBE\u6307\u5B9A\u5C3A\u5BF8\u7684\u65F6\u5019\u4EA7\u751F\u4E00\u4E2A\u65B0\u7684\u6587\u4EF6
log4j.appender.File = org.apache.log4j.RollingFileAppender
#\u6307\u5B9A\u8F93\u51FA\u76EE\u5F55
log4j.appender.File.File = logs/ssm.log
#\u5B9A\u4E49\u6587\u4EF6\u6700\u5927\u5927\u5C0F
log4j.appender.File.MaxFileSize = 10MB
# \u8F93\u51FA\u6240\u4EE5\u65E5\u5FD7\uFF0C\u5982\u679C\u6362\u6210DEBUG\u8868\u793A\u8F93\u51FADEBUG\u4EE5\u4E0A\u7EA7\u522B\u65E5\u5FD7
log4j.appender.File.Threshold = ALL
log4j.appender.File.layout = org.apache.log4j.PatternLayout
log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n
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5.接下来创建Spring和MyBatis整合文件

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<?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"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    <!-- 自动扫描 -->  
    <context:component-scan base-package="com.sgcc.user" >
    <!-- 不扫描@Controller注解的类-->
    <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    
    <!-- 引入配置文件 -->  
    <bean id="propertyConfigurer"  
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="location" value="classpath:jdbc.properties" />  
    </bean>  

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"  
        destroy-method="close">  
        <property name="driverClassName" value="${driver}" />  
        <property name="url" value="${url}" />  
        <property name="username" value="${username}" />  
        <property name="password" value="${password}" />  
        <!-- 初始化连接大小 -->  
        <property name="initialSize" value="${initialSize}"></property>  
        <!-- 连接池最大数量 -->  
        <property name="maxActive" value="${maxActive}"></property>  
        <!-- 连接池最大空闲 -->  
        <property name="maxIdle" value="${maxIdle}"></property>  
        <!-- 连接池最小空闲 -->  
        <property name="minIdle" value="${minIdle}"></property>  
        <!-- 获取连接最大等待时间 -->  
        <property name="maxWait" value="${maxWait}"></property>  
    </bean>  
    
    <!-- spring和MyBatis整合,不需要mybatis的配置映射文件 -->  
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
        <property name="dataSource" ref="dataSource" />  
        <!-- 自动扫描mapping.xml文件 -->  
        <property name="mapperLocations" value="classpath:com/sgcc/user/mapping/*.xml"></property>  
    </bean>  
    
    <!-- DAO接口所在包名,Spring会自动查找其下的类 动态代理实现 不用写dao的实现类-->  
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
        <property name="basePackage" value="com.sgcc.user.dao" />  
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>  
    </bean>  
    
    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->  
    <bean id="transactionManager"  
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
        <property name="dataSource" ref="dataSource" />  
    </bean>  

    <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
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6.创建SpringMVC文件,如下代码

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<?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/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

    <!-- 自动扫描该包 @controller注解的类-->  
    <context:component-scan base-package="com.sgcc.user.controller"/>  

      <!-- 静态资源处理 -->
    <mvc:default-servlet-handler/>

    <!--自动注册 RequestMappingHandlerMapping、RequestMappingHandlerAdapter 等bean -->
    <mvc:annotation-driven></mvc:annotation-driven>

    <!-- 定义跳转的文件的前后缀 ,视图模式配置-->  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
        <property name="prefix" value="/WEB-INF/views/" />  
        <property name="suffix" value=".jsp" />  
    </bean>     
</beans>
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7.接下来就是各个业务文件了,如下图所示:

8.创建UserController文件,如下图所示:

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package com.sgcc.user.controller;
import javax.annotation.Resource;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import com.sgcc.user.pojo.User;
import com.sgcc.user.service.UserService;
@Controller
public class UserController {
    /**
     * 使用@Autowired也可以,@Autowired默认按类型装配
     * @Resource 默认按名称装配,当找不到与名称匹配的bean才会按类型装配。
     */
    @Resource 
    private UserService userService;
    /**
     * 测试查询
     * 
     * @param id
     * @param model
     * @return
     */
    @RequestMapping("/showUser")
    public String testtoshowUser(@RequestParam(value = "id") Integer id, Model model) {
        System.out.println("id:" + id);
        User user = userService.getUserById(id);
        model.addAttribute("user", user);
        return "showUser";
    }

    /**
     * 测试添加数据
     * 
     * @param id
     * @param model
     * @return
     */
    @RequestMapping("/insertUser")
    public String testinsertUser() {
        User user = new User();
        user.setUserName("李清照");
        user.setPassword("3232322");
        user.setAge(22);
        int count = userService.insert(user);
        System.out.println("插入" + count + "条数据成功");
        return "showUser";
    }
}
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9.创建UserDao

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package com.sgcc.user.dao;

import com.sgcc.user.pojo.User;

public interface  UserDao {
    int deleteByPrimaryKey(Integer id);

    int insert(User record);

    int insertSelective(User record);

    User selectByPrimaryKey(Integer id);

    int updateByPrimaryKeySelective(User record);

    int updateByPrimaryKey(User record);
}
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10.创建UserMapper.xml文件,代码如下

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12.创建User类

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package com.sgcc.user.pojo;

public class User {
    private Integer id;

    private String userName;

    private String password;

    private Integer age;

    public Integer getId() {
        return id;
    }

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

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName == null ? null : userName.trim();
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password == null ? null : password.trim();
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "User [id=" + id + ", userName=" + userName + ", password=" + password + ", age=" + age + "]";
    }    
}
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13.创建UserService接口

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package com.sgcc.user.service;

import com.sgcc.user.pojo.User;

public interface UserService {
    //根据id查找
    public User getUserById(Integer userid);

    //添加一条数据
    public int insert(User user);
}
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14.创建UserServiceImpl实现类

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package com.sgcc.user.service;
import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.sgcc.user.dao.UserDao;
import com.sgcc.user.pojo.User;
@Transactional
@Service("userService")
public class UserServiceImpl implements UserService {

    /**
     * 因为没有在spring的文件中显式的声明userService实现类,直接通过getBean得到 userService 会找不到
     *  需要显式配置 @Service ("userService"),指定bean的名称
     *  相当与<bean id="userService" class="com.jxust.ssm.service.impl.UserServiceImpl"></bean>
     */
    @Resource
    private UserDao userDao;

    public User getUserById(Integer userid) {   
        return this.userDao.selectByPrimaryKey(userid);
    }

    @Override
    public int insert(User user) {
        return this.userDao.insert(user);
    }

}
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16.配置程序入口web.xml文件

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18.创建前端页面,index.jsp

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19.创建showUser.jsp

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20启动服务,如下图所示:

 

posted @ 2020-02-05 21:54  颗就完了  阅读(760)  评论(0编辑  收藏  举报