Maven构建SSM项目

﹏ヽ暗。殇╰゛Y 2022-06-12 01:26 237阅读 0赞

公司的项目基本上都是基于SSM框架，使用Maven构建项目，然后是用Springboot（我也不知道这个算什么），反正这些框架（技术）来写项目的，之前也接触过Maven和SSM框架，但是没有使用Maven构建过项目，这次学习了一下，稍微整理一下。

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# **一、Maven** #

Apache Maven是一个软件项目管理和综合工具。基于项目对象模型（POM）的概念，Maven可以从一个中心资料片管理项目构建，报告和文件。  
  Maven是一个项目管理和综合工具。Maven提供了开发人员构建一个完整的生命周期框架。开发团队可以自动完成项目的基础工具建设，Maven使用标准的目录结构和默认构建生命周期。  
  在多个开发团队环境时，Maven可以设置按标准在非常短的时间里完成配置工作。由于大部分项目的设置都很简单，并且可重复使用，Maven让开发人员的工作更轻松，同时创建报表，检查，构建和测试自动化设置。  
  概括地说，Maven简化和标准化项目建设过程。处理编译，分配，文档，团队协作和其他任务的无缝连接。 Maven增加可重用性并负责建立相关的任务。  
  和Maven有着类似功能的还有Ant和Gradle，Ant至今还没有接触到。个人感觉Gradle和Maven用的还是比较多的，从目前看的这么多，很多教程，还是有很多教程是直接用Maven和Gradle构建的。之前写Android的时候用的是AndroidStudio，里面的项目几乎全是用Gradle，但是由于时间关系没有深入了解。

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# **二、SSM框架** #

SSM框架主要指的是SpringMVC，Spring，Mybatis这三个框架的整合，顺便提一下，现在好像没有人用Struts2来写东西了。  
  SpringMVC和Spring似乎好像可以看成是一个东西，主要是IOC和AOP这两个部分。Spring 是一个开源框架，是为了解决企业应用程序开发复杂性而创建的。框架的主要优势之一就是其分层架构，分层架构允许您选择使用哪一个组件，同时为 J2EE 应用程序开发提供集成的框架。  
  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。Mybatis可以和Hibernate比较学习，这两个东西都是操作数据库的，然后最近还在学习JPA，也是操作数据库的。

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# **三、上代码** #

在Eclipse中新建一个Maven项目，我选择的是maven-archetype-webapp这个，构建网项目如果项目没有下面这两个文件夹就自己新建

src/main/source
    src/main/java

xml文件，一般就是配置文件，就是放在src/main/source目录下的，代码什么就放在src/main/java下。

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**1、pom.xml**

<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>com.nuaa</groupId>
        <artifactId>ssm</artifactId>
        <packaging>war</packaging>
        <version>0.0.1-SNAPSHOT</version>
        <name>ssm Maven Webapp</name>
        <url>http://maven.apache.org</url>
    
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <spring.version>4.1.4.RELEASE</spring.version>
            <mybatis.version>3.2.8</mybatis.version>
            <mybatis-spring.version>1.2.2</mybatis-spring.version>
            <mysql-connector-java.version>5.1.34</mysql-connector-java.version>
            <druid.version>1.0.12</druid.version>
            <log4j.version>1.2.17</log4j.version>
            <servlet.version>3.0-alpha-1</servlet.version>
            <jstl.version>1.2</jstl.version>
        </properties>
    
    
    
        <dependencies>
    
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-api</artifactId>
                <version>1.7.7</version>
            </dependency>
            <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-core</artifactId>
                <version>1.1.3</version>
            </dependency>
            <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-access</artifactId>
                <version>1.1.3</version>
            </dependency>
            <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-classic</artifactId>
                <version>1.1.3</version>
            </dependency>
    
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.12</version>
                <scope>test</scope>
            </dependency>
    
    
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jstl</artifactId>
                <version>${jstl.version}</version>
            </dependency>
    
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
                <version>${servlet.version}</version>
                <scope>provided</scope>
            </dependency>
    
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql-connector-java.version}</version>
            </dependency>
    
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>${druid.version}</version>
            </dependency>
    
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>${log4j.version}</version>
            </dependency>
    
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-beans</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-core</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-tx</artifactId>
                <version>${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-jdbc</artifactId>
                <version>${spring.version}</version>
            </dependency>
    
    
            
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>${mybatis.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>${mybatis-spring.version}</version>
            </dependency>
    
    
    
        </dependencies>
    
    
    
    
        <build>
            <finalName>ssm</finalName>
    
        </build>
    </project>

**2、web.xml**  
这个文件在src/mian/webapp/WEB-INF下，这也是项目的根目录，项目的jsp等一般都放在这，和普通的JavaWeb项目差不多。

<?xml version="1.0" encoding="UTF-8"?>
    <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">
        <display-name>ssm</display-name>
        <welcome-file-list>
            <welcome-file>index.html</welcome-file>
            <welcome-file>index.htm</welcome-file>
            <welcome-file>index.jsp</welcome-file>
            <welcome-file>default.html</welcome-file>
            <welcome-file>default.htm</welcome-file>
            <welcome-file>default.jsp</welcome-file>
        </welcome-file-list>
    
    
    
        <servlet>
            <servlet-name>DruidStatView</servlet-name>
            <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
        </servlet>
        <servlet-mapping>
            <servlet-name>DruidStatView</servlet-name>
            <url-pattern>/druid/*</url-pattern>
        </servlet-mapping>
    
    
        <filter>
            <filter-name>HiddenHttpMethodFilter</filter-name>
            <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
        </filter>
        <filter-mapping>
            <filter-name>HiddenHttpMethodFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    
        <servlet-mapping>
            <servlet-name>springMVC</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    
    
        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring.xml,classpath:mybatis.xml</param-value>
        </context-param>
    
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
    
        <servlet>
            <servlet-name>springMVC</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>
    
    
        <filter>
            <filter-name>encodingFilter</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>
            <init-param>
                <param-name>forceEncoding</param-name>
                <param-value>true</param-value>
            </init-param>
        </filter>
    
        
        <filter-mapping>
            <filter-name>encodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    </web-app>

**3、db.properties**

jdbc.url=jdbc\:mysql\://localhost/test01?useUnicode\=true&characterEncoding\=utf-8
    jdbc.username=root
    jdbc.password=123456

4.mybatis.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" 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-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">
    
            
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
            <property name="url" value="${jdbc.url}" />
            <property name="username" value="root" />
            <property name="password" value="123456" />
        </bean>
    
    
        
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            
            <property name="mapperLocations" value="classpath:test/user/bean/mapper/*.xml" />
            
            <property name="dataSource" ref="dataSource" />
        </bean> 
    
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            
            <property name="basePackage" value="test.user.bean.mapper"/>
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    
        </bean> 
    </beans>

**4、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:mvc="http://www.springframework.org/schema/mvc" 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-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">
    
        <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>
        
        <context:component-scan base-package="test.user.controller" />
    
        
        <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
            <property name="cache" value="true" />
            <property name="prefix" value="/"></property>
            <property name="suffix" value=".jsp"></property>
        </bean>
    
    
    </beans>

**5、spring.xml**

配置文件就到这里了，这其实就是写JavaWeb项目很麻烦的一件事，在些项目之前有一大堆需要配置的信息。但是在Springboot中就不会有这种事，Springboot的配置信息及其简单，等我学完了再说。

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**6、test.user.bean.UserBean.java**

package test.user.bean;
    
    public class UserBean { 
        private String username;
    
        private String password;
    
        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();
        }
    }

**7、test.user.bean.mapper.UserBeanMapper.java**

package test.user.bean.mapper;
    
    import test.user.bean.UserBean;
    
    public interface UserBeanMapper { 
    
        public int login(UserBean userBean);
    
    }

**8、test.user.bean.mapper.UserBeanMapper.xml**

<?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.user.bean.mapper.UserBeanMapper">
        <select id="login" parameterType="test.user.bean.UserBean" resultType="int">
        select count(1) from user where username=#{username} and password=#{password}
        </select>
    </mapper>

**9、test.user.controller.UserController.java**

package test.user.controller;
    
    import javax.servlet.http.HttpServletRequest;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    import test.user.bean.UserBean;
    import test.user.service.UserService;
    
    @Controller
    public class UserController { 
    
        @Autowired
        private UserService userService;
    
        @RequestMapping("/user/login")
        public String login(HttpServletRequest request){
            String username = request.getParameter("username");
            String password = request.getParameter("password");
            System.out.println(123);
            UserBean userBean = new UserBean();
            userBean.setPassword(password);
            userBean.setUsername(username);
            boolean a = userService.login(userBean);
            return a?"/success":"/fail";
        }
    
    }

**10、test.user.service.UserService.java**

package test.user.service;
    
    import test.user.bean.UserBean;
    
    public interface UserService { 
    
        public boolean login(UserBean userBean);
    }

**11、test.user.service.Impl.UserServiceImpl.java**

package test.user.service.impl;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import test.user.bean.UserBean;
    import test.user.bean.mapper.UserBeanMapper;
    import test.user.service.UserService;
    
    @Service("userService")
    public class UserServiceImpl implements UserService{ 
    
        @Autowired
        private UserBeanMapper userBeanMapper;
    
        public boolean login(UserBean userBean) {
            int a = userBeanMapper.login(userBean);
    
            return a>0?true:false;
        }
    
    }

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终于把代码都弄上来了，还有两个登陆成功了登陆失败的网页，这里就不列出了，自己随便写两个界面命名为success.jsp和fail.jsp就可以了，然后只要用Tomcat启动服务，访问

localhost:8080/ssm/user/login?username=123&password=123

就可以根据情况返回success.jsp或fail.jsp

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文章讲的不是很清楚，大家可以看看源码：[http://download.csdn.net/download/q15150676766/9895807][http_download.csdn.net_download_q15150676766_9895807]

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