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后台环境搭建-ssm+maven多模块

时间:2019-12-06 00:23:54      阅读:98      评论:0      收藏:0      [点我收藏+]

标签:数据库名   response   目的   文件上传   stdout   file   std   string   map   

1、 为什么需要划分

因为:

  1.随着业务增加,mapper或者service类越来越多,项目就会越来越臃肿---需要拆分来解决
  2.项目代码越来越多,结构或者编译越来越慢---需要拆分来解决
  3.有些内容是公共的内容,有很多项目都可以使用---需要公共的模块来解决
  4.有些内容,不想让每个人都可以去改---解决方法抽取

  一般是中大型项目都在使用分模块开发

  以前ssm结构:

    技术图片

 

 

 

  但随着项目的壮大:

  (1) 大部分的domain或者一些service以及mapper在多个项目中是通用的

  (2) Pom.xml中的依赖越来越长

  (3) Build整个项目的时间越来越长,尽管你只是一直在web层工作,但是不得不build整个项目

  (4) 某个模块,比如mapper,你只想让一些经验丰富的人来维护,但是现在每个开发者都能修改这个模块,这导致关键模块的代码质量达不到你的要求

    一个大项目拆分为多个小项目(maven模块)组成,而且它们是有依赖关系的.

  为了让项目尽量满足:

    设计层面 

    高内聚(写一个方法 就应该完成该方法的事情, save 10 20 ),

    低耦合(类层面和接口层面 分层 使用接口 -- 面向接口编程 -- 依赖减少)

怎么拆分:

  把以前的一个模块(一个项目)拆分成多个模块拆分后的结构(下面一一分析) 在创建下面模块时只有crm_web需要选择项目原型maven-archetype-webapp

 技术图片

 

 

1.1、 crm_parent

  它没有一个java代码,只是用来对子模块分类 ,它就是装其他模块的盒子

  crm-parent里面在pom.xml配置一个公共jar给儿子继承

  什么mian,test文件都可以不要,因为不写东西进去

<properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <!-- spring版本号 -->
        <spring.version>4.1.2.RELEASE</spring.version>
        <!-- mybatis版本号 -->
        <mybatis.version>3.2.1</mybatis.version>
        <!-- log4j日志文件管理包版本 -->
        <slf4j.version>1.7.2</slf4j.version>
        <log4j.version>1.2.17</log4j.version>
        <!-- jackson包版本 -->
        <jackson.version>2.5.0</jackson.version>
        <!--swagger版本-->
        <springfox.version>2.4.0</springfox.version>
    </properties>
    <dependencies>
        <!--Spring核心-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</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-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1.1</version>
        </dependency>

        <!--aop依赖包-->
        <dependency>
            <groupId>aopalliance</groupId>
            <artifactId>aopalliance</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.6.8</version>
        </dependency>
    </dependencies>

 

1.2、 basic-util

  作为各项目的公共工具的抽取

  PageList类(分页对象):字段(total,rows)

  AjaxResult类(请求状态响应对象):字段(success,message)

  basic-util模块的结构

  技术图片

 

 

1.3、 basic_core

  作为各项目的公共的抽取,依赖basic-utils模块

  它是用来储存domain,mapper,query,service公用的代码

  crm-parent模块结构

技术图片

  

  domain:所有的domain都会有id,所以提取出来放在domain的BaseDomain.java中

  mapper所有的mapper都会有CRUD,所以提取出来放在mapper的BaseMapper.java中

  query所有的请求也许都会有相同的请求对象,所以提取出来放在query的BaseQuery.java中

  service所有的service都会去调用mapper中的CRUD方法,所以提取出来放在query的BaseService.java中

  pom.xml中添加依赖模块和所需的依赖包

 

 <dependencies>
        <!--依赖basic_util模块-->
        <dependency>
            <groupId>crm_parent</groupId>
            <artifactId>basic_util</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <!--目的是可以在base中使用@autowired @Transactional注解-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>
    </dependencies>

 

1.4、 crm_common

  crm-common本模块作为一个项目三层的公共部分的抽取,依赖basic_core模块

     在该模块下面创建domian对象(不写id就去继承BaseDomain,因为BaseDomain提取了个id)和某张表的查询对象

  crm_common模块结构

技术图片

 pom.xml中添加依赖模块

<dependencies>
        <dependency>
            <groupId>crm_parent</groupId>
            <artifactId>basic_core</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>
Department.java
import cn.itsource.basic.core.domain.BaseDomain;

/**
 * 部门(crm_common是放普通的domain)
 */
public class Department extends BaseDomain{
    private String name;


    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }



    @Override
    public String toString() {
        return "Department{" +
                "name=‘" + name + ‘\‘‘ +
                ", id=" + id +
                ‘}‘;
    }
}

DepartmentQuery.java
/**
 * 员工的查询条件(普通类的查询条件)
 */
public class DepartmentQuery extends Query {
}


1.5、 crm-mapper

crm_mapper本模块作为一个项目持久层,依赖crm_common模块包含mapper接口和映射;和持久层的配置

crm_mapper的结构

技术图片

 

 pom.xml中添加依赖模块和所需的依赖包

<dependencies>
        <dependency>
            <groupId>crm_parent</groupId>
            <artifactId>crm_common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <!--jdbc连接池-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>


        <!--Mybatis集成-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.0</version>
        </dependency>
        <!--log4j-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>

        <!--slf4j-->
        <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>
            <scope>test</scope>
        </dependency>

        <!--数据库连接驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.46</version>
        </dependency>
        <!--数据库连接池-->
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.2.2</version>
        </dependency>
        <dependency>
            <groupId>commons-pool</groupId>
            <artifactId>commons-pool</artifactId>
            <version>1.5.3</version>
        </dependency>
    </dependencies>
DepartmentMapper.java
import cn.itsource.basic.core.mapper.BaseMapper;

/**
 * 部门类的Mapper(普通类的接口)
 * 继承
 * BaseMapper(CRUD的方法)
 */
public interface DepartmentMapper extends BaseMapper{
}

DepartmentMapper.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 映射
namespace:对那个接口进行实现
select:查询
id:必须和方法名一致
resultType:返回的数据类型
SELECT * FROM t_department:sql语句
-->
<mapper namespace="cn.itsource.crm.mapper.DepartmentMapper">
    <select id="queryAll" resultType="Department">
        SELECT * FROM t_department
    </select>
</mapper>

 

1.6、 crm-service

crm_service本模块作为一个项目业务层,依赖crm_mapper模块

crm_service模块的结构

技术图片

 

 

 pom.xml中添加依赖模块

<dependencies>
        <dependency>
            <groupId>crm_parent</groupId>
            <artifactId>crm_mapper</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>
IDepartmentService.java
import cn.itsource.basic.core.service.IBaseService;
import cn.itsource.crm.common.domain.Department;

public interface IDepartmentService extends IBaseService<Department> {

}
db.properties
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///数据库名?useUnicode=true&characterEncoding=utf-8
jdbc.username=数据库账号
jdbc.password=数据库密码

log4j.properties


log4j.rootLogger=ERROR, stdout
#log4j.rootLogger=NONE
log4j.logger.cn.itsource=TRACE
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

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:tx="http://www.springframework.org/schema/tx"
       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/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!--扫描的包-->
    <context:component-scan base-package="cn.itsource.crm.service"/>

    <!-- Jdbc配置文件 -->
    <context:property-placeholder location="classpath:db.properties" />

    <!-- 数据源dataSource -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driverClassName}" />
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
        <!--maxActive: 最大连接数量 -->
        <property name="maxActive" value="150" />
        <!--minIdle: 最小空闲连接 -->
        <property name="minIdle" value="5" />
        <!--maxIdle: 最大空闲连接 -->
        <property name="maxIdle" value="20" />
        <!--initialSize: 初始化连接 -->
        <property name="initialSize" value="30" />
        <!--maxWait: 超时等待时间以毫秒为单位 1000等于60秒 -->
        <property name="maxWait" value="1000" />
        <!-- 在空闲连接回收器线程运行期间休眠的时间值,以毫秒为单位. -->
        <property name="timeBetweenEvictionRunsMillis" value="10000" />
        <!-- 在每次空闲连接回收器线程(如果有)运行时检查的连接数量 -->
        <property name="numTestsPerEvictionRun" value="10" />
        <!-- 1000 * 60 * 30 连接在池中保持空闲而不被空闲连接回收器线程 -->
        <property name="minEvictableIdleTimeMillis" value="10000" />
        <property name="validationQuery" value="SELECT NOW() FROM DUAL" />
    </bean>

    <!--Mybatis核心对象-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据源 -->
        <property name="dataSource" ref="dataSource" />
        <!-- 配置mybatis (mapper)映射器路径 -->
        <property name="mapperLocations" value="classpath*:cn/itsource/crm/mapper/*Mapper.xml" />
        <!-- 配置mybatis 类型别名 -->
        <property name="typeAliasesPackage">
            <value>
                cn.itsource.crm.common.domain
                cn.itsource.crm.common.query
            </value>
        </property>
    </bean>

    <!--注入映射器,一劳永逸的做法-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.itsource.crm.mapper"></property>
    </bean>

    <!--事务管理-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--以注解的方式进行事务管理-->
    <tx:annotation-driven transaction-manager="transactionManager"/>


</beans>

 

1.7,crm-web

在创建这个模块时和前面的不同点是需要选择显目原型maven-archetype-webapp

crm_web本模块作为一个项目表现层,依赖crm_service模块

Controller

而现在我们的整体架构为前后端分离架构,所有的静态资源全部在前端项目中

crm_web模块结构

技术图片

 

 

 

 

pom.xml中添加依赖模块和依赖包
<dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>crm_parent</groupId>
            <artifactId>crm_service</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        

        <!--SpringMVC-->
        <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>

        <!--文件上传-->
        <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>2.2</version>
        </dependency>
        <!--jackson-->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>${jackson.version}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>${jackson.version}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>${jackson.version}</version>
        </dependency>
        <!-- JSTL标签类 -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!--servlet-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
            <scope>provided</scope>
        </dependency>
        <!--swagger配置-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>${springfox.version}</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>${springfox.version}</version>
        </dependency>


    </dependencies>

    <build>
        <finalName>crm_web</finalName>
        <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
            <plugins>
                <plugin>
                    <artifactId>maven-clean-plugin</artifactId>
                    <version>3.1.0</version>
                </plugin>
                <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
                <plugin>
                    <artifactId>maven-resources-plugin</artifactId>
                    <version>3.0.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.8.0</version>
                </plugin>
                <plugin>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>2.22.1</version>
                </plugin>
                <plugin>
                    <artifactId>maven-war-plugin</artifactId>
                    <version>3.2.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-install-plugin</artifactId>
                    <version>2.5.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-deploy-plugin</artifactId>
                    <version>2.8.2</version>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>

SwaggerConfig.java
package cn.itsource.crm.web.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@Configuration //相当于写一个配置文件 application.xml
@EnableWebMvc // 开启springmvc
@EnableSwagger2 //开启swagger2
@ComponentScan(basePackages="cn.itsource.crm.web.controller")
public class SwaggerConfig {
    //相当于 <bean ><property name="">   </bean>
    @Bean
    public Docket api(){
        //生成接口信息
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(this.apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("cn.itsource.crm.web.controller"))
                .paths(PathSelectors.any())
                .build();
    }
    
    //api的 注解 javaweb 文档的描述信息
    private ApiInfo apiInfo(){
         @SuppressWarnings("deprecation")
        ApiInfo info=new ApiInfo(
                 "API接口测试文档",
                 "接口测试",
                 "1.0",
                 "http://www.itsource.cn",
                 "itsource",
                 "111",
                 "http://www.itsource.cn");
         return info;
    }
}

DepartmentController.java
import cn.itsource.crm.common.domain.Department;
import cn.itsource.crm.service.IDepartmentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;


import java.util.List;

@Controller
@RequestMapping("/department")
public class DepartmentController {

    @Autowired
    private IDepartmentService departmentService;

    @RequestMapping("/list")
    @ResponseBody
    public List<Department> list(){
        return departmentService.queryAll();
    }



}

applicationContext-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: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">

    <!-- 自动扫描该包,使SpringMVC认为包下用了@controller注解的类是控制器 -->
    <context:component-scan base-package="cn.itsource.crm.web.controller" />

    <context:component-scan base-package="cn.itsource.crm.web.config" />

    <!-- 启动SpringMVC的注解功能 -->
    <mvc:annotation-driven/>

    <!--静态资源放行-->
    <mvc:default-servlet-handler/>

    <!-- 定义跳转的文件的前后缀 ,视图解析器配置-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 配置文件上传解析器 -->
    <bean id="multipartResolver"
          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 默认编码 -->
        <property name="defaultEncoding" value="utf-8" />
        <!-- 文件大小最大值 -->
        <property name="maxUploadSize" value="10485760000" />
    </bean>
</beans>

 

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 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         version="3.0">
  <display-name>crm</display-name>
  <!-- Spring的配置文件 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <!--Spring监听器 ApplicationContext 载入 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!-- Spring MVC 核心配置开始 -->
  <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:applicationContext-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!-- 编码过滤器 -->
  <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>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

然后设置数据库和表,tomcat启动项目。

 


 

 

 



 

 

 

 

 

 

 

  

     

 

 

 

 

  

  


后台环境搭建-ssm+maven多模块

标签:数据库名   response   目的   文件上传   stdout   file   std   string   map   

原文地址:https://www.cnblogs.com/bigbigxiao/p/11992684.html

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