Bootstrap

idea搭建ssm项目

idea搭建ssm项目

搭建环境:

  • jdk 1.8
  • maven 3.6.1
  • Tomcat 9.0
  • idea 2019
  • mysql 5.7.19

一、创建maven项目

   参考idea 搭建maven项目

二、项目目录结构

2.1 代码目录结构

   创建完工程后,在src-main-java下构建com包,并且在com下创建,Controller,dao,service,pojo,包用于存储代码

2.2配置文件目录结构

   在resources下创建 mapper(用于存储mybatis配置文件),spring(用来存放spring配置文件)两个子目录

2.3 web目录

   在src-main下创建一个webapp目录,并且在webapp目录下构建一个叫WEB-INF的子目录,并且建立一个web.xml的文件
![在这里插入图片描述](https://img-blog.csdnimg.cn/20210302194621487.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNTIxNzk3,size_16,color_FFFFFF,t_7

<?xml version="1.0" encoding="UTF-8" ?>
<!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="http://java.sun.com/xml/ns/javaee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
        version="3.0"
        metadata-complete="true">

三、搭建SSM框架

3.1 maven依赖

   在pom.xml文件中导入如下依赖:

3.1.1 spring-MVC
		<dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
3.1.2 mybatis和驱动类
		<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>
3.1.3 事务和整合依赖
   <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
3.1.4 mysql及数据库连接池
   		<!-- 连接池依赖 -->
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>

        <!--mysql-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.31</version>
        </dependency>
3.1.4 JSON
		<dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>0.9</version>
        </dependency>
3.1.5 构建插件
<build>
    <resources>
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                    <include>**/*.tld</include>
            </includes>
            <filtering>false</filtering>
        </resource>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
                <include>**/*.tld</include>
            </includes>
            <filtering>false</filtering>
        </resource>
    </resources>
</build>

注意:构建如果在工程中所有的配置文件都放在resources下,一般可以不加构建插件,但是为了保证工程打包内容完整,建议加上构建插件以保证内容完整。

3.2 数据库信息
3.2.1 Mysql数据库中创建名字为ssm的数据库
create database ssm
3.2.2 创建user表
CREATE TABLE user(
  id int(10) NOT NULL auto_increment,
  name varchar(50) default NULL,
  pwd varchar(50) default NULL,
  PRIMARY KEY  (id)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
3.2.3 向user表添加数据
INSERT INTO user (id, name, pwd) VALUES
	(1, '张三', '123456'),
	(2, '李四', '123456'),
	(3, '王五', '123123');
3.3 创建类和HTML文件
3.3.1 pojo 类
package com.pojo;

public class user {
    private Integer id;
    private String name;
    private String pwd;

    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;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
}
3.3.2 dao 接口
package com.dao;

import com.pojo.user;

import java.util.List;

public interface userDao {
    public List<user> queryAll();
}
3.3.3 service 接口
package com.service;

import com.pojo.user;

import java.util.List;

public interface userservice {
    List<user> queryAll();
}

3.3.4 serviceimpl 类
package com.service.serviceimpl;

import com.dao.userDao;
import com.pojo.user;
import com.service.userservice;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
public class userserviceImpl implements userservice {
    @Autowired
    userDao dao;
    public List<user> queryAll() {
        return dao.queryAll();
    }
}

3.3.5 Controller 类
package com.controller;

import com.pojo.user;
import com.service.serviceimpl.userserviceImpl;
import net.sf.json.JSONArray;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.ArrayList;
import java.util.List;

@Controller
public class userController {
    List<user> list=new ArrayList<user>();
    @Autowired
    userserviceImpl service;
    @ResponseBody
    @RequestMapping(value = "queryAll.do",produces = "text/html;charset=utf-8")
    public String queryAll(){
        list=service.queryAll();
        JSONArray jsonArray=JSONArray.fromObject(list);
        return jsonArray.toString();
    }
}

3.3.6 login.html 页面

因为页面中要使用JQuery,所以我们要引入jquery.js
在这里插入图片描述
下面是login.html 代码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <table>
        <tr>
            <th>id</th>
            <th>name</th>
            <th>pwd</th>
        </tr>
        <tbody id="trs"></tbody>
    </table>
</body>
<script src="js/jquery.js" type="text/javascript"></script>
<script>
$(function () {
   login();
});
function login() {
    $.ajax({
        type:"post",
        url:"queryAll.do",
        dataType:"json",
        success:function (r) {
            console.log(r);
            var trs="";
            $.each(r,function(i,v){
                trs=trs+"<tr><td>"+v.id+"</td><td>"+v.name+"</td><td>"+v.pwd+"</td></tr>";
            });
            $("#trs").append(trs);
        }
    });
}
</script>
</html>
3.4 配置工程支持WEB开发

   (1)在File选项卡中找到Project Structure选项进入

   (2)在Project Settings里找到Modules,点击左上方"+",找到WEB模块,点击确定加入WEB模块

   (3)点击添加的WEB模块位置,将Deployment Descriptors里面的path修改成刚才我们建立的web.xml文件的位置

​   (4)在Web Resource Directories里面的路径修改成我们的webapp路径
在这里插入图片描述

​   (5)点击Artfacts选项,点击“+”,选择Web Application:Exploaded,选择from modules,找到我们刚才建立的web工程点击确定,这样才能让我们可以在WEBAPP目录下建立JSP文件,并且tomcat服务器找到该WEB项目进行部署和运行
在这里插入图片描述

3.5 配置文件
3.5.1 spring 配置文件

(1)spring-mvc.xml配置文件

<?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-4.3.xsd
      http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
      ">
    <!--使用注解驱动-->
    <mvc:annotation-driven/>
    <context:component-scan base-package="com"/>
</beans>

(2)spring-mybatis.xml配置文件

<?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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">


    <!--引入properties文件-->
    <bean id="placeholderConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:jdbc.properties"></property>
    </bean>

    <!--配置数据源-->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="${driver}" />
        <!--连接数据库的url -->
        <property name="url" value="${url}" />
        <!--连接数据库的用户名 -->
        <property name="username" value="${username}" />
        <!--连接数据库的密码 -->
        <property name="password" value="${password}" />
        <!--最大连接数 -->
        <property name="maxActive" value="${jdbc.maxTotal}" />
        <!--最大空闲连接  -->
        <property name="maxIdle" value="${maxIdle}" />
        <!--初始化连接数  -->
        <property name="initialSize" value="${initialSize}" />
    </bean>

    <!--配置sqlsession工厂-->
    <!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 自动扫描mapping.xml文件 -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <!--配置DAO所在spring会自动查找下面的类-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.dao"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>

    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!-- 注解式事务 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>


</beans>
3.5.2 web.xml文件

在web.xml文件中加入

 	<!--请求和应答字符编码过滤器-->
    <filter>
        <filter-name>encoding-filter</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>encoding-filter</filter-name>
        <url-pattern>/* </url-pattern>
        <servlet-name>springDispatcherServlet</servlet-name>
    </filter-mapping>

    <!--启动spring容器-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/spring-mybatis.xml</param-value>
    </context-param>
    <!-- 用前端控制器初始化springmvc容器 -->
    <servlet>
        <servlet-name>springDispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <!-- Map all requests to the DispatcherServlet for handling -->
    <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
3.5.3 jdbc.properties文件

在resources下直接建立jdbc.properties文件,存储JDBC配置信息

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/ssm?characterEncoding=utf8
#账户
username=root
#密码
password=x5
jdbc.maxTotal=30
maxIdle=10
initialSize=5
3.5.4 mapper映射文件

在resources下的mapper文件夹中建立一个叫emp.xml的映射文件,用于存储mybatis映射配置信息

<?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.dao.userDao">
    <select id="queryAll" resultType="com.pojo.user">
        select * from user
    </select>
</mapper>

四、部署和运行

4.1 部署

4.1.1 Tomcat服务器配置

idea 配置Tomcat服务器

4.1.2 项目部署

(1)找到运行窗口,选择add configurations,点击左上角“+”,选择tomcat服务器,选择local。在弹出窗口的application server 位置找到配置好的Tomcat服务器

URL:代表访问地址默认为 [HTTP://本机IP:8080]

JRE:为默认JDK版本

VM options:为Tomcat服务器运行的JVM参数

(2)选择deployment选项卡,点击右侧加号选择artifact,刚才建立的好的工程就会加入到Tomcat服务器下,点击apply完成部署

注意:下方的Application Context位置代表访问工程的默认路径,可以只保留“/”,后面的内容都删除,方便访问,只需要输入http://IP:8080即可访问工程,无需如eclipse一样去输入工程名

在这里插入图片描述

在这里插入图片描述

3.2 访问运行

(1)启动Tomcat服务器

(2)默认打开浏览器以配置好的地址直接进行访问

;