Maven构建SSM项目

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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。


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。


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。


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/sourcesrc/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。


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>${log4j.version}</version>        </dependency>        <!-- spring -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-beans</artifactId>            <version>${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>        <!-- mybatis -->        <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>    <!-- encoding filter for jsp page -->    <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-8jdbc.username=rootjdbc.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 ">        <!-- Driuid的DataSource配置,涉及的包druid-1.0.31,比较推荐这个 同时需要在web.xml中配置DruidStatView的servlet -->    <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>    <!-- sqlSessinFactory -->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <!-- 加载mybatis的配置文件 -->        <property name="mapperLocations" value="classpath:test/user/bean/mapper/*.xml" />        <!-- 数据源 -->        <property name="dataSource" ref="dataSource" />    </bean>     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <!-- 指定扫描的包名         如果扫描多个包,每个包中间使用半角逗号分隔        -->        <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"/>    <!-- 扫描带有annotation的包 -->    <context:component-scan base-package="test.user.controller" />    <!-- 视图解析器 -->    <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

<?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 ">    <!-- 加载配置文件 -->    <context:property-placeholder location="classpath:db.properties" />    <context:component-scan base-package="test.user.service"/></beans>

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。


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;@Controllerpublic 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;    }}

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


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




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