[Java知识库] SSM整合

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[Java知识库]SSM整合

一配置文件

1.pom文件；

2.web.xml;

3.整合需要druid的properties的文件，存放连接数据库的数据；

4.mybatis的配置文件；

5.spring-mybatis的配置文件；

6.Spring-MVC的配置文件；

7.外部的配置文件；（js、jQuery）

二类

1.bean;

2.service包含实现类（Impl）;

3.mapper;

4.controller;

三实现

3.1 pom文件

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.openlab</groupId>
    <artifactId>ssmdemo</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
            <scope>provided</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>5.3.5</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>5.3.5</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.3.5</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>5.3.5</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjrt -->


        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjtools</artifactId>
            <version>1.9.5</version>
        </dependency>

        <dependency>
            <groupId>aopalliance</groupId>
            <artifactId>aopalliance</artifactId>
            <version>1.0</version>
        </dependency>


        <dependency>
            <groupId>com.google.protobuf</groupId>
            <artifactId>protobuf-java</artifactId>
            <version>2.4.1</version>
            <scope>compile</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.1</version>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.6</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.16</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjrt -->

        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.7.RELEASE</version>
        </dependency>
        <!-- jstl，servlet-api，junit -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- MBG -->
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.5</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.6</version>
        </dependency>

        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjtools</artifactId>
            <version>1.9.5</version>
        </dependency>

        <dependency>
            <groupId>aopalliance</groupId>
            <artifactId>aopalliance</artifactId>
            <version>1.0</version>
        </dependency>

        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.3.1</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>5.0.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.3.9</version>
            <scope>test</scope>
        </dependency>

    </dependencies>
</project>

3.2 druid.properties

jdbc.driverClassName:com.mysql.cj.jdbc.Driver
jdbc.url:jdbc:mysql:///web?characterEncoding=utf8&useSSL=false&serverTimezone=UTC&rewriteBatchedStatements=true
jdbc.name:root
jdbc.password:123456

3.3 mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!--    驼峰命名开启-->
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
<!--   映射器 mybatis中的 -->
  <typeAliases>
      <package name="com.openlab.bean"/>
  </typeAliases>
 <!-- 分页工具pager -->
    <plugins>
        <plugin interceptor="com.github.pagehelper.PageInterceptor">
            <property name="reasonable" value="true"/>
        </plugin>
    </plugins>

</configuration>

3.4 Spring-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:context="http://www.springframework.org/schema/context"
       xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
       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 https://www.springframework.org/schema/context/spring-context.xsd http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!--扫描-->
    <context:component-scan base-package="com.openlab">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
<!--加载本地的配置文件-->
    <context:property-placeholder location="classpath:druid.properties"></context:property-placeholder>
<!--配置数据源-->
    <bean class="com.alibaba.druid.pool.DruidDataSource" id="dataSource">
        <property name="password" value="${jdbc.password}"></property>
        <property name="username" value="${jdbc.name}"></property>
        <property name="url" value="${jdbc.url}"></property>
        <property name="driverClassName" value="${jdbc.driverClassName}"></property>
    </bean>
        <!--与mybatis整合-->
<!--    获得sqlSessionFactorybuild对象-->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactory">
        <property name="dataSource" ref="dataSource"></property>
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <property name="mapperLocations" value="classpath:com/openlab/mapper/UserMapper.xml"></property>
    </bean>


<!--获得sqlSession对象-->
    <bean class="org.mybatis.spring.SqlSessionTemplate" id="sessionTemplate">
        <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
    </bean>
<!--获得mapper对象 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.openlab.mapper"></property>
        <property name="sqlSessionTemplateBeanName" value="sessionTemplate"></property>
    </bean>
    <!--获得事务管理对象-->
    <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="transactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
<!--    开启事务注解-->
    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>

</beans>

3.5 springMVC.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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--    开启扫描-->
    <context:component-scan base-package="com.openlab" use-default-filters="false">
<!-- 设置只扫描的注解-->
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
<!--    视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
<!--加载静态文件-->
    <mvc:default-servlet-handler></mvc:default-servlet-handler>
<!--能进入controller里-->
    <mvc:annotation-driven></mvc:annotation-driven>
    <mvc:view-controller path="/" view-name="index"></mvc:view-controller>
    <mvc:view-controller path="/index" view-name="index"></mvc:view-controller>
    <mvc:view-controller path="/adduser" view-name="adduser"></mvc:view-controller>


</beans>

3.6?web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
<!--对语言的修改  字符编码滤波器-->
    <filter>
        <filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

<!--支持resoult风格   隐藏的方法滤波器-->
    <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>

<!--注册servlet 调度servlet-->
    <servlet>
        <servlet-name>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--  初始化 -->
        <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>/</url-pattern>
    </servlet-mapping>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:Spring_Mybatis.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
</web-app>

3.7?bean（实体类）

package com.openlab.bean;

import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;

@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
public class User {
    private String id;
    private String username;
    private String password;
    private Integer roleId;
    private String iconURL;


}

3.8?sevice（服务层）（业务实现层）

package com.openlab.service;

import com.github.pagehelper.PageInfo;
import com.openlab.bean.User;



public interface UserService {
      public int save(User userr);
//    public int delete(Integer userId);
//    public int update(User user);
    public PageInfo getPageInfo(int pageNo,int nums,int pageSize);

}

package com.openlab.service.Impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.openlab.bean.User;
import com.openlab.mapper.UserMapper;
import com.openlab.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@Transactional
public class UserSeriviceImpl implements UserService {
    @Autowired
    public UserMapper userMapper;
   @Override
    public int save(User user) {
        return userMapper.save(user);
    }
/*
    @Override
    public int delete(Integer userId) {
        return userMapper.delete(userId);
    }

    @Override
    public int update(User user) {
        return userMapper.update(user);
    }*/

    @Override
    public PageInfo getPageInfo(int pageNo, int nums, int pageSize) {
        Page<User> page= PageHelper.startPage(pageNo,pageSize);
        List<User> list=userMapper.findAll();
        PageInfo<User> pageInfo=new PageInfo<>(list,nums);
        return pageInfo;
    }
}

3.9?mapper（mapper）

package com.openlab.mapper;

import com.openlab.bean.User;

import java.util.List;

public interface UserMapper {
    public int save(User uesr);
    /*     public int delete(Integer userId);
       public int update(User user);*/
    public List<User> findAll();
}

3.10?controller(控制层)

package com.openlab.Controller;

import com.github.pagehelper.PageInfo;
import com.openlab.bean.User;
import com.openlab.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;

import java.util.Map;

@Controller
public class UserConrtoller {
    @Autowired
    @Qualifier("userSeriviceImpl")
    public UserService userService;

    @GetMapping("/user")
    public String list(int pageNo, Map<String,Object> map){
        int pageSize=5;
        int nums=5;
        PageInfo pageInfo=userService.getPageInfo(pageNo,nums,pageSize);
        map.put("pageInfo",pageInfo);
        return "userlist";
    }
    @PostMapping("/user")
    public String add(User user,int pageNo,Map<String,Object> map){
        int pageSize=5;
        int nums=5;
        int t=userService.save(user);
        if(t!=1){
            return "userlist";
        }else{
            PageInfo pageInfo=userService.getPageInfo(pageNo,nums,pageSize);
            map.put("pageInfo",pageInfo);
            return "userlist";
        }

    }
}

3.11?表现层（jsp）

index.jsp(页面开始画面)

<%--
  Created by IntelliJ IDEA.
  User: ASUS
  Date: 2021/9/28
  Time: 11:24
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<a href="${pageContext.request.contextPath}/user?pageNo=1">查看所有人员</a>
</body>
</html>

userlist.jsp（查看所有人员页面）

<%--
  Created by IntelliJ IDEA.
  User: ASUS
  Date: 2021/9/28
  Time: 16:43
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<html>
<head>
    <title>Title</title>
    <link rel="stylesheet" href="${pageContext.request.contextPath}/bootstrap-3.3.7-dist/css/bootstrap.css"/>
    <script type="text/javascript" src="${pageContext.request.contextPath}/jQuery/jquery-1.12.4.min.js"></script>
    <script type="text/javascript" src="${pageContext.request.contextPath}/bootstrap-3.3.7-dist/js/bootstrap.js"></script>
</head>
<body>

<div id="container">
    <table class="table table-striped" title="table">
        <tr>
            <td>人员编号</td>
            <td>人员姓名</td>
            <td>人员密码</td>
            <td>操作</td>
        </tr>
        <c:forEach items="${pageInfo.list}" var="user">
            <tr>
                <td>${user.id}</td>
                <td>${user.username}</td>
                <td>${user.password}</td>
                <td>
                    <a href="${pageContext.request.contextPath}/adduser"><span class="label label-success">添加</span></a>
                    <a href=""><span class="label label-warning">修改</span></a>
                </td>

            </tr>
        </c:forEach>

    </table>

    <div style="margin-left: 100px">
        <nav aria-label="Page navigation" style="">
            <ul class="pagination">
                <li>
                    <a href="#" aria-label="${pageInfo.prePage}">
                        <span aria-hidden="true">&laquo;</span>
                    </a>
                </li>
                <c:forEach items="${pageInfo.navigatepageNums}" var="num">
                <li><a href="${pageContext.request.contextPath}/user?pageNo=${num}">${num}</a></li>
                </c:forEach>

                <li>
                    <a href="#" aria-label="${pageInfo.nextPage}">
                        <span aria-hidden="true">&raquo;</span>
                    </a>
                </li>
            </ul>
        </nav>
    </div>


</div>

</body>
</html>

adduser.jsp(添加人员页面)

<%--
  Created by IntelliJ IDEA.
  User: ASUS
  Date: 2021/9/28
  Time: 21:09
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<form action="${pageContext.request.contextPath}/user?pageNo=1" method="post">
    编号：<input type="text" name="id">
    姓名：<input type="text" name="username">
    密码：<input type="text" name="password">
    菜单编号：<input type="text" name="roleId">
    <input type="submit" value="提交">
</form>
</body>
</html>

分层：

表示层（css.jquery.js）

控制层（servlet、jsp）

业务实现层

Dao（mapper）

Service（接口的声明）

bean（实体对象）