maven下构建ssm框架（Java分模块开发）

水深无声 2022-10-02 01:48 116阅读 0赞

### maven下整合ssm框架 ###

*   *  目录结构
     *  pom文件
     *  web.xml
     *  spring配置文件
     *  代码演示
     *  结果：
     *  pom中jar包下载太慢

## 目录结构 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzMzcxMDA0_size_16_color_FFFFFF_t_70]

*  model层，写实体类，JavaBean。
 *  api层，是控制器层，写controller代码。
 *  service层，是服务层
 *  dao层，是持久化层，连接数据库。
 *  config层，里面是配置文件。
 *  web层，用来放大前端的（前后端分离的这种）。

## pom文件 ##

有一个总的pom.xml文件，各个模块也有各自的pom.xml文件。

*  总的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.jf</groupId>
      <artifactId>ssm</artifactId>
      <packaging>pom</packaging>
      <version>1.0-SNAPSHOT</version>
      <name>ssm</name>
      <url>http://maven.apache.org</url>
    <properties>
        <java-version>1.8</java-version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
     <modules>
    	<module>config</module>
    	<module>model</module>
    	<module>dao</module>
    	<module>service</module>
    	<module>api</module>
    	<module>web</module>
     </modules>
    
      <dependencies>
          <dependency>
              <groupId>junit</groupId>
              <artifactId>junit</artifactId>
              <version>4.12</version>
              <scope>test</scope>
          </dependency>
          <dependency>
              <groupId>org.apache.commons</groupId>
              <artifactId>commons-lang3</artifactId>
              <version>3.1</version>
    
          </dependency>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-core</artifactId>
              <version>4.3.3.RELEASE</version>
          </dependency>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-beans</artifactId>
              <version>4.3.3.RELEASE</version>
          </dependency>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-context</artifactId>
              <version>4.3.3.RELEASE</version>
          </dependency>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-aop</artifactId>
              <version>4.3.3.RELEASE</version>
          </dependency>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-web</artifactId>
              <version>4.3.3.RELEASE</version>
          </dependency>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-webmvc</artifactId>
              <version>4.3.3.RELEASE</version>
          </dependency>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-jdbc</artifactId>
              <version>4.3.3.RELEASE</version>
          </dependency>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-test</artifactId>
              <version>4.3.3.RELEASE</version>
          </dependency>
    
    
          <dependency>
              <groupId>org.aspectj</groupId>
              <artifactId>aspectjweaver</artifactId>
              <version>1.8.13</version>
          </dependency>
          <dependency>
              <groupId>com.fasterxml.jackson.core</groupId>
              <artifactId>jackson-core</artifactId>
              <version>2.9.9</version>
          </dependency>
          <dependency>
              <groupId>com.fasterxml.jackson.core</groupId>
              <artifactId>jackson-databind</artifactId>
              <version>2.9.9</version>
          </dependency>
          <dependency>
              <groupId>javax.servlet</groupId>
              <artifactId>javax.servlet-api</artifactId>
              <version>3.1.0</version>
              
          </dependency>
          <dependency>
              <groupId>com.alibaba</groupId>
              <artifactId>druid</artifactId>
              <version>1.1.17</version>
          </dependency>
          <dependency>
              <groupId>org.mybatis</groupId>
              <artifactId>mybatis</artifactId>
              <version>3.4.6</version>
          </dependency>
          <dependency>
              <groupId>org.mybatis</groupId>
              <artifactId>mybatis-spring</artifactId>
              <version>1.3.2</version>
          </dependency>
          <dependency>
              <groupId>com.github.pagehelper</groupId>
              <artifactId>pagehelper</artifactId>
              <version>5.1.8</version>
          </dependency>
          <dependency>
              <groupId>mysql</groupId>
              <artifactId>mysql-connector-java</artifactId>
              <version>5.1.47</version>
          </dependency>
          <dependency>
              <groupId>org.mockito</groupId>
              <artifactId>mockito-core</artifactId>
              <version>2.28.2</version>
              <scope>test</scope>
          </dependency>
      </dependencies>
      <build>
          <plugins>
              <plugin>
                  <groupId>org.apache.tomcat.maven</groupId>
                  <artifactId>tomcat7-maven-plugin</artifactId>
                  <version>2.2</version>
              </plugin>
          </plugins>
      </build>
    </project>

*  api层的pom.xml  
    `<packaging>war</packaging>`,war包（处理web请求），别的jar包就行。  
    引用父类的依赖包，依赖兄弟类(会用到兄弟类中的东西，不引用\[dependency\]，用不了)config,model,service

*  dao层pom.xml

别的都类似，只需要改一下里面的artifactId，name就行。

## web.xml ##

*  api层中src/main/webapp/WEB-INF/web.xml

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" >
    <web-app>
    
      <display-name>Archetype Created Web Application</display-name>
      
      <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring.xml</param-value>
      </context-param>
      <filter>
        <filter-name>charsetfilter</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>forceResponseEncoding</param-name>
          <param-value>true</param-value>
        </init-param>
      </filter>
      <filter-mapping>
        <filter-name>charsetfilter</filter-name>
        <url-pattern>*.do</url-pattern>
      </filter-mapping>
      <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>
    
      </servlet>
      <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>*.do</url-pattern>
      </servlet-mapping>
      <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
      </listener>
    </web-app>

## spring配置文件 ##

spring.xml

<?xml version="1.0" encoding="utf-8" ?>
    
    <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.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">
    
        
        <context:annotation-config></context:annotation-config>
        <context:component-scan base-package="com.westos.student.dao"/>
        <context:component-scan base-package="com.westos.student.service"/>
    
    
        <context:property-placeholder file-encoding="utf-8" location="classpath:jdbc.properties" />
        <aop:aspectj-autoproxy proxy-target-class="true" />
    
        
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
            <property name="url" value="${dburl}"/>
            <property name="driverClassName" value="${dbdriver}"/>
            <property name="username" value="${dbusername}"/>
            <property name="password" value="${dbpassword}" />
        </bean>
    
        
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource"/>
            
                
                    
                        
                    
                
            
        </bean>
        <bean id="scanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
            <property name="basePackage" value="com.westos.student.dao"/>
        </bean>
        <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
            <property name="dataSource" ref="dataSource"/>
        </bean>
        
    </beans>

spring-mvc.xml

<?xml version="1.0" encoding="utf-8" ?>
    
    <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.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">
    
        
        <context:annotation-config></context:annotation-config>
        <context:component-scan base-package="com.westos.student.controller"/>
        <aop:aspectj-autoproxy proxy-target-class="true" />
        
        
        <mvc:annotation-driven>
            <mvc:message-converters>
                <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                    <property name="defaultCharset" value="utf-8"/>
                    <property name="supportedMediaTypes">
                        <value>text/html;charset=UTF-8</value>
                    </property>
                </bean>
                <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                    <property name="supportedMediaTypes">
                        <value>application/json;charset=UTF-8</value>
                    </property>
                </bean>
            </mvc:message-converters>
        </mvc:annotation-driven>
    
    </beans>

jdbc.properties

dbdriver=com.mysql.jdbc.Driver
    dburl=jdbc:mysql://localhost:3306/mavenssmtest
    dbusername=root
    dbpassword=123456

## 代码演示 ##

*  model层，写实体类，JavaBean。  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzMzcxMDA0_size_16_color_FFFFFF_t_70 1]

package com.westos.student.entity;
    
    
    import org.apache.commons.lang3.builder.EqualsBuilder;
    import org.apache.commons.lang3.builder.HashCodeBuilder;
    
    public class Student { 
    
        private Integer id;
        private String name;
    
        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;
        }
    
        @Override
        public boolean equals(Object o) { 
            if (this == o) return true;
    
            if (o == null || getClass() != o.getClass()) return false;
    
            Student student = (Student) o;
    
            return new EqualsBuilder()
                    .append(id, student.id)
                    .append(name, student.name)
                    .isEquals();
        }
    
        @Override
        public int hashCode() { 
            return new HashCodeBuilder(17, 37)
                    .append(id)
                    .append(name)
                    .toHashCode();
        }
    }

*  api层，是控制器层，写controller代码。  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzMzcxMDA0_size_16_color_FFFFFF_t_70 2]

package com.westos.student.controller;
    
    import com.westos.student.entity.Student;
    import com.westos.student.service.StudentServiceInterface;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.http.HttpStatus;
    import org.springframework.http.ResponseEntity;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import java.sql.ResultSet;
    import java.util.List;
    
    @RequestMapping("/api")
    @RestController
    public class StudentController { 
    
        @Autowired
        private StudentServiceInterface studentService;
        /** * 前后端分离时一般在api层会给出http状态码 * @param student * @return */
        @RequestMapping("/listStudent.do")
        public ResponseEntity<List<Student>> listStudent(Student student){ 
            List<Student> result = studentService.listStudent(student);
            return new ResponseEntity<List<Student>>(result,HttpStatus.OK);
        }
    
        /*@RequestMapping("/addStudent.do") public ResponseEntity<Integer> addStudent(Student student){ Integer i=studentService.addStudent(student); return new ResponseEntity<Integer>(i,HttpStatus.OK); } @RequestMapping("/updateStudent.do") public ResponseEntity<Integer> updateStudent(Student student){ Integer i=studentService.updateStudent(student); return new ResponseEntity<Integer>(i,HttpStatus.OK); }*/
    }

*  service层，是服务层  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzMzcxMDA0_size_16_color_FFFFFF_t_70 3]

package com.westos.student.service;
    
    import com.westos.student.entity.Student;
    
    import java.util.List;
    
    public interface StudentServiceInterface { 
    
        List<Student> listStudent(Student student);
    
        Integer addStudent(Student student);
    
        Integer updateStudent(Student student);
    }

package com.westos.student.service;
    
    import com.westos.student.dao.StudentDAO;
    import com.westos.student.entity.Student;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import java.util.List;
    
    @Service
    public class StudentService implements StudentServiceInterface { 
    
        @Autowired
        private StudentDAO studentDAO;
    
        public List<Student> listStudent(Student student) { 
            if(student==null){ 
                student=new Student();
            }
            return studentDAO.listStudent(student);
        }
    
        public Integer addStudent(Student student) { 
            return studentDAO.addStudent(student);
        }
    
        public Integer updateStudent(Student student) { 
            return studentDAO.updateStudent(student);
        }
    }

*  dao层，是持久化层，连接数据库。

数据库表信息  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzMzcxMDA0_size_16_color_FFFFFF_t_70 4]  
目录：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzMzcxMDA0_size_16_color_FFFFFF_t_70 5]

package com.westos.student.dao;
    
    import com.westos.student.entity.Student;
    import org.springframework.stereotype.Repository;
    
    import java.util.List;
    
    @Repository
    public interface StudentDAO { 
    
        List<Student> listStudent(Student student);
    
        Integer addStudent(Student student);
    
        Integer updateStudent(Student student);
    
    }

<?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.westos.student.dao.StudentDAO">
        <select id="listStudent" resultType="com.westos.student.entity.Student">
            select * from student
            <where>
                <if test="name!=null">
                  name=#{name}
                </if>
            </where>
        </select>
        <insert id="addStudent">
            insert into student values (#{id},#{name})
        </insert>
        <update id="updateStudent">
            update student set name=#{name} where id=#{id}
        </update>
    </mapper>

*  config层，里面是配置文件。
 *  web层，目前是空的。

## 结果： ##

![在这里插入图片描述][20190617085847502.png]

## pom中jar包下载太慢 ##

如果你的pom.xml下载比较慢的话，修改一下maven中的配置文件  
E:\\apache-maven-3.6.1\\conf\\settings.xml  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzMzcxMDA0_size_16_color_FFFFFF_t_70 6]  
配置阿里云镜像

<mirror>
    <id>nexus-aliyun</id>
    <mirrorOf>central</mirrorOf>
    <name>Nexus aliyun</name>
    <url>http://maven.aliyun.com/nexus/content/groups/public</url>
    </mirror>

--------------------

谢谢！

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[20190617085847502.png]: /images/20220113/990eb72c93724ae08937a581439aceb0.png
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