简单易懂：SSM入门级项目整合实例教程+附项目源码

r囧r小猫 2023-09-25 18:23 43阅读 0赞

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**目录**

一、前言

二、推荐开发及运行环境

三、项目基本结构

四、创建一个普通JAVAEE-WEB项目

五、搭建数据库

六、pom.xml引入依赖

七、创建实体类

八、创建三层架构对应模块的类和接口

九、Spring和Mybatis的整合

1、spring的配置文件：

2、Spring和Mybatis的整合配置

3、整合测试

4、测试结果

九、Spring和SpringMVC整合

1、Spring的配置

2、SpringMVC的配置

3、SSM框架整合测试

十、注意事项及其BUG反馈

1、控制台中文乱码解决办法：

2、Mysql数据库中文乱码解决办法：

3、服务器日志中文乱码解决办法：

4、出现no appropriate protocal 异常报错

5、出现java.lang.NoClassDefFoundError：javax/severlet/报错

十一、总结

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

## 一、前言 ##

> **最快的提升自己的编程水平以及对某个方向的理解和运用，必然是需要动手实践，在不断的Debug中自我折磨，然后放弃！！！**（玩笑）

本篇文章只是进行基础的SSM框架（**Sping+SpringMVC+Mybatis**）的整合的教程，以及其中可能遇到的问题的简单解决办法！因为刚开始起手一个项目，自然需要一个过渡阶段，否则前期将会异常艰难。

**废话不多说，开始吧！**

**全程干货不累赘，开始发车！！**

**Final Test Result：**

![ca6ba94a34174ca09095af4d4ae1e45d.png][]

## 二、推荐开发及运行环境 ##

1、系统：Windows10

2、IDE：Interilj ideal 2021.3

3、服务器：Tomacat-8（用高版本对应的Severlet-4.0会启动报错，注意！！）

4、数据库：MySQL5.7

5、浏览器：FireFox

6、JavaKit：JDK18

## 三、项目基本结构 ##

![d392f02bc7534c84bc1794f1ff4ee772.png][]

![3eaa028665c74130830d1bcdbebf13aa.png][]

## 四、创建一个普通JAVAEE-WEB项目 ##

1、点击File，new，project

![387adca216ad47e882aad57dd7e08695.png][]

2、创建一个JavaEnterpri项目，选择对应JDK，命名为SSM，选择JavaEE8，然后Finish

![595e448d3e5445d1ba096fe4afd228ab.png][]

## 五、搭建数据库 ##

1、创建SSM数据库和tb\_book数据表

create database SSM;
    create table tb_book(
    id int(11) primary key,
    name varchar(20) not null,
    press varchar(20) not null,
    author varchar(20) not null);

2、插入数据

insert into tb_book(id,name,press,author) values(1,"Moving Earth","人民出版社","刘慈欣");

## 六、pom.xml引入依赖 ##

代码如下：（复制粘贴即可）

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <groupId>com.example</groupId>
        <artifactId>SSM</artifactId>
        <version>1.0-SNAPSHOT</version>
        <name>SSM</name>
        <packaging>war</packaging>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <maven.compiler.target>1.8</maven.compiler.target>
            <maven.compiler.source>1.8</maven.compiler.source>
            <junit.version>5.8.1</junit.version>
        </properties>
        <dependencies>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>5.2.8.RELEASE</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-tx</artifactId>
                <version>5.2.8.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>5.2.8.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-test</artifactId>
                <version>5.2.8.RELEASE</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>5.2.8.RELEASE</version>
            </dependency>
            
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.5.2</version>
            </dependency>
            
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>2.0.1</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.1.20</version>
            </dependency>
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>javax.servlet-api</artifactId>
                <version>4.0.1</version>
            </dependency>
            <dependency>
                <groupId>org.apache.cxf</groupId>
                <artifactId>cxf-rt-frontend-jaxrs</artifactId>
                <version>3.4.5</version>
            </dependency>
            <dependency>
                <groupId>org.junit.jupiter</groupId>
                <artifactId>junit-jupiter-api</artifactId>
                <version>${junit.version}</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.junit.jupiter</groupId>
                <artifactId>junit-jupiter-engine</artifactId>
                <version>${junit.version}</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>javax.servlet.jsp</groupId>
                <artifactId>jsp-api</artifactId>
                <version>2.2</version>
                <scope>provided</scope>
            </dependency>
            
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>8.0.11</version>
            </dependency>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.13</version>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
        <build>
            <finalName>SSM</finalName>
            <pluginManagement>
                <plugins>
                    <plugin>
                        <artifactId>maven-clean-plugin</artifactId>
                        <version>3.1.0</version>
                    </plugin>
                    
                    <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>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-war-plugin</artifactId>
                    <version>3.3.2</version>
                </plugin>
            </plugins>
            
            <resources>
                <resource>
                    <directory>src/main/java</directory>
                    <includes>
                        <include>**/*.properties</include>
                        <include>**/*.xml</include>
                    </includes>
                    <filtering>false</filtering>
                </resource>
                <resource>
                    <directory>src/main/resources</directory>
                    <includes>
                        <include>**/*.properties</include>
                        <include>**/*.xml</include>
                    </includes>
                    <filtering>false</filtering>
                </resource>
            </resources>
    
        </build>
    
    
    </project>

## 七、创建实体类 ##

src/main/java下创建com.itheima.domain包，创建Book实体类

**1-1Book.java**

package com.itheima.domain;
    public class Book {
        private Integer id;
        private String name;
        private  String press;
        private  String author;
        public Integer getId()
        {
            return id;
        }
        public void setId(Integer id){
            this.id=id;
        }
        public void setName(String name) {
            this.name = name;
        }
        public String getName() {
            return name;
        }
        public void setAuthor(String author) {
            this.author = author;
        }
        public String getAuthor() {
            return author;
        }
        public void setPress(String press) {
            this.press = press;
        }
        public String getPress() {
            return press;
        }
    }

## 八、创建三层架构对应模块的类和接口 ##

src/main/java下创建com.itheima.dao包，创建BookMapper接口

**1-2 BookMapper.java**

package com.itheima.dao;
    import com.itheima.domain.Book;
    public interface BookMapper {
             public Book findBookById(Integer id);
    }

同目录下创建其映射文件

**1-3BookMapper.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="com.itheima.dao.BookMapper">
        
        <select id="findBookById" parameterType="int"
                resultType="com.itheima.domain.Book">
      		select * from tb_book where id = #{id}
      	</select>
    </mapper>

src/main/java下创建com.itheima.service包，创建BookService接口

**1-4 BookService.java**

package com.itheima.service;
    import com.itheima.domain.Book;
    public interface BookService {
        Book findBookById(Integer id);
    }

src/main/java下创建com.itheima.service.Impl包,创建实现类BookServiceImpl

**1-5 BookServiceImpl.java**

package com.itheima.service.impl;
    import com.itheima.dao.BookMapper;
    import com.itheima.domain.Book;
    import com.itheima.service.BookService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    @Service
    public class BookServiceImpl implements BookService {
        @Autowired
        private BookMapper bookMapper;
        public Book findBookById (Integer id)
        {
            return bookMapper.findBookById(id);
        }
    }

src/main/java下创建com.itheima.controller包,创建BookController处理器类

**1-5 BookController.java**

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

package com.itheima.controller;
    import com.itheima.domain.Book;
    import com.itheima.service.BookService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.servlet.ModelAndView;
    @Controller
    public class BookController {
        @Autowired
        private BookService bookService;
        @RequestMapping("/book")
        public ModelAndView findBookById(Integer id)
        {
            Book book=bookService.findBookById(id);
            ModelAndView modelAndView=new ModelAndView();
            modelAndView.setViewName("book.jsp");
            modelAndView.addObject("book",book);
            return modelAndView;
        }
    }

## 九、Spring和Mybatis的整合 ##

### 1、spring的配置文件： ###

src/main/resources目录下创建application-service.xml配置文件

**2-1** application-service.xml

### 2、Spring和Mybatis的整合配置 ###

src/main/resources目录下创建属性源文件jdbc.properties,用于配置MySQL数据库

**2-2 jdbc.properties**

jdbc.driverClassName=com.mysql.cj.jdbc.Driver
    jdbc.url=jdbc:mysql://localhost:3306/ssm?useUnicode=true\
      &characterEncoding=utf-8&serverTimezone=Asia/Shanghai
    jdbc.username=root
    jdbc.password=123456

src/main/resources目录下创建application-dao.xml配置信息

**2-3 application-dao.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"
           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
     	">
        <context:property-placeholder location="classpath:jdbc.properties"/>
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
            <property name="driverClassName" value="${jdbc.driverClassName}"/>
            <property name="url" value="${jdbc.url}"/>
            <property name="username" value="${jdbc.username}"/>
            <property name="password" value="${jdbc.password}"/>
        </bean>
        <bean id="sqlSessionFactory"
              class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource"/>
        </bean>
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="basePackage" value="com.itheima.dao"/>
        </bean>
    </beans>

### 3、整合测试 ###

src/test/java中创建BookServiceTest类

**2-4BookServiceTest.java**

import com.itheima.domain.Book;
    import com.itheima.service.BookService;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(locations = {"classpath:application-service.xml","classpath:application-dao.xml"})
    public class BookServiceTest {
    @Autowired
        private BookService bookService;
    @Test
        public void findBookById()
    {
        Book book=bookService.findBookById(2);
        System.out.println("id:"+book.getId());
        System.out.println("name:"+book.getName());
        System.out.println("author:"+book.getAuthor());
        System.out.println("press:"+book.getPress());
    }
    }

### 4、测试结果 ###

测试成功：

![6d7b172c0f6e4dad94dbe0b9dad393b9.png][]

## 九、Spring和SpringMVC整合 ##

### 1、Spring的配置 ###

在项目webapp/WEB-INF的web.xml中输入以下代码

**3-1 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">
          <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:application-*.xml</param-value>
          </context-param>
          <listener>
            <listener-class>
              org.springframework.web.context.ContextLoaderListener
            </listener-class>
          </listener>
          <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>
            <load-on-startup>1</load-on-startup>
          </servlet>
          <servlet-mapping>
            <servlet-name>DispatcherServlet</servlet-name>
            <url-pattern>/</url-pattern>
          </servlet-mapping>
    </web-app>

### 2、SpringMVC的配置 ###

src/main/resources目录下创建Spring-mvc.xml配置信息

**3-2 spring-mvc.xml**

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:mvc="http://www.springframework.org/schema/mvc"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://www.springframework.org/schema/beans
           	    http://www.springframework.org/schema/beans/spring-beans.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:component-scan base-package="com.itheima.controller"/>
        <mvc:annotation-driven/>
    </beans>

### 3、SSM框架整合测试 ###

src/main/webapp下创建book.jsp文件

**3-4 book.jsp**

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>图书信息查询</title>
    </head>
    <body>
    <table border="1">
    <tr>
        <th>图书id</th>
        <th>图书名称</th>
        <th>出版社</th>
        <th>作者</th>
    </tr>
    <tr>
        <td>${book.id}</td>
        <td>${book.name}</td>
        <td>${book.press}</td>
        <td>${book.author}</td>
    </tr>
    </table>
    </body>
    </html>

启动Tomcat8，在浏览器输入

http://localhost:8082/SSM_war_exploded/book?id=1

其中8082为端口号，我的填的是8082，默认是8080，根据自己的配置改就行！

结果：

![7321bced088c4b538a29740aeafdff12.png][]

## 十、注意事项及其BUG反馈 ##

### 1、控制台中文乱码解决办法： ###

Settings->Editor->File Encodings->三个部分如图都改为GBK即可

![372ff4f5bdc745b784c060f7bc78d7b3.png][]

### 2、Mysql数据库中文乱码解决办法： ###

修改数据库字符集 :

alter database SSM default convert to character set utf8;

### 3、服务器日志中文乱码解决办法： ###

找到对应的Tomcat-8存储地址，在conf中找到

logging.properties文件，将全部GBk替换成UTF-8即可

![258da02fce514a569bd4f52e16c0e881.png][]

![db03181134bc4dec9701bc63b6496ada.png][]

### 4、出现no appropriate protocal 异常报错 ###

找到对应位置jdk，把java.security中的

dk.tls.disabledAlgorithms=后的SSLv3，TLSv1，TLSv1.1删除，

**如图大概在724行，删除后如图：**

![f60d1bd3d9284d61906c5781e0652d7d.png][]

![10451374b63c4aafb710b1e2bc42f8ba.png][]

### 5、出现java.lang.NoClassDefFoundError：javax/severlet/报错 ###

是由于Tomcat高版本不支持4.0版本的Sevrlet导致，更换低版本Tomcat即可

## 十一、总结 ##

>  **总体来说，当开始着手一个WEB项目时，总会由于各种原因导致各种BUG，需要花费大量的时间去排查和调试，才能一步步把最后的项目运行出来，因此需要考虑的方面有很多，重要的是必须看懂编译器报错的原因，从而分析出可行的解决办法。**
> 
>  **只有不断的鞭策自己去实践和学习，积累Debug的能力和经验，才能慢慢获得进步！**

> **发文不易，恳请大佬们高抬贵手！**
> 
>   
> **点赞：随手点赞是种美德，是大佬们对于本人创作的认可！**
> 
>   
> **评论：往来无白丁，是你我交流的的开始！**
> 
>   
> **收藏：愿君多采撷，是大佬们对在下的赞赏！**

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