• 手把手教你SSM整合（包教包会）

    SSM整合

    步骤（七步）

    1. 新建maven项目，添加依赖

    可以选择根据模版创建maven项目
    在这里插入图片描述

    <dependencies>
    
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webmvcartifactId>
      <version>5.2.15.RELEASEversion>
    dependency>
 
    
    <dependency>
      <groupId>org.mybatisgroupId>
      <artifactId>mybatisartifactId>
      <version>3.5.6version>
    dependency>
 
    
    <dependency>
      <groupId>org.mybatisgroupId>
      <artifactId>mybatis-springartifactId>
      <version>2.0.6version>
    dependency>
 
    
    <dependency>
      <groupId>mysqlgroupId>
      <artifactId>mysql-connector-javaartifactId>
      <version>8.0.28version>
    dependency>
 
    
    <dependency>
      <groupId>com.alibabagroupId>
      <artifactId>druidartifactId>
      <version>1.2.1version>
    dependency>
 
    
    <dependency>
      <groupId>org.projectlombokgroupId>
      <artifactId>lombokartifactId>
      <version>1.18.24version>
    dependency>
    
    <dependency>
      <groupId>com.fasterxml.jackson.coregroupId>
      <artifactId>jackson-databindartifactId>
      <version>2.13.2.2version>
    dependency>
    
    <dependency>
      <groupId>javax.servletgroupId>
      <artifactId>javax.servlet-apiartifactId>
      <version>4.0.1version>
    dependency>
 
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-jdbcartifactId>
      <version>5.2.15.RELEASEversion>
    dependency>
    
    <dependency>
      <groupId>org.mybatis.generatorgroupId>
      <artifactId>mybatis-generator-coreartifactId>
      <version>1.4.0version>
    dependency>
      
    <dependency>
      <groupId>log4jgroupId>
      <artifactId>log4jartifactId>
      <version>1.2.17version>
    dependency>
    <dependency>
      <groupId>org.slf4jgroupId>
      <artifactId>slf4j-log4j12artifactId>
      <version>1.7.30version>
    dependency>
  dependencies>

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    1. 将web.xml文件进行替换
      因为根据模版生成的web.xml文件版本过低，所以需要进行替换，可以复制张贴高版本的web.xml文件代码，也可以在项目管理中移除原来的web文件，生成新的web文件（但是一定要注意，如果选择生成的话，需要修改名称，等生成之后，再把名字修改回来）

    高版本的web文件代码

    
<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">
 
 
web-app>

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    1. 配置spring.xml文件
    
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:p="http://www.springframework.org/schema/p" 
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="  
            http://www.springframework.org/schema/beans 
            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd  
            http://www.springframework.org/schema/aop 
            http://www.springframework.org/schema/aop/spring-aop-2.5.xsd  
            http://www.springframework.org/schema/tx 
            http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context.xsd">
    
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
        destroy-method="close" scope="singleton">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver" />
        <property name="url"
            value="jdbc:mysql://localhost:3306/ssm?characterEncoding=utf8" />
        <property name="username" value="root" />
        <property name="password" value="1128" />
        <property name="maxTotal" value="30" />
        <property name="maxIdle" value="10" />
        <property name="initialSize" value="5" />
    bean>

    
    <bean id="txManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    bean>
    
    <tx:annotation-driven transaction-manager="txManager" />
    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        
        <property name="configLocation" value="classpath:mybatis-config.xml" />
    bean>
    
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        
        <property name="basePackage" value="com.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    bean>
    
    <context:component-scan base-package="com.ssm.service" />
beans>

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    1. 配置springmvc.xml文件
    
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:p="http://www.springframework.org/schema/p" 
    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
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    <context:component-scan base-package="com.ssm.controller" />
    
    
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    bean>
beans>   

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    1. 配置mybatis核心配置文件
     
DOCTYPE configuration  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <mappers>
        <mapper resource="com/ssm/dao/UserMapper.xml" />
    mappers>
configuration> 

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    1. 配置web.xml文件
    
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    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>springMVCdisplay-name>
    <welcome-file-list>
        <welcome-file>index.jspwelcome-file>
    welcome-file-list>
    
    <context-param>
        
        <param-name>contextConfigLocationparam-name>
        <param-value>classpath:applicationContext-*.xmlparam-value>
    context-param>
    <filter>
        <filter-name>encodingFilterfilter-name>
        <filter-class>
            org.springframework.web.filter.CharacterEncodingFilter
        filter-class>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>UTF-8param-value>
        init-param>
        <init-param>
            <param-name>forceEncodingparam-name>
            <param-value>trueparam-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>encodingFilterfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>
    <servlet>
        <servlet-name>springservlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
        <init-param>
            <param-name>contextConfigLocationparam-name>
            <param-value>classpath:springmvc.xmlparam-value>
        init-param>
        <load-on-startup>1load-on-startup>
    servlet>
    <servlet-mapping>
        <servlet-name>springservlet-name>
        <url-pattern>/url-pattern>
    servlet-mapping>
    <listener>
        <listener-class>
            org.springframework.web.context.ContextLoaderListener
        listener-class>
    listener>
    <listener>
        <listener-class>
            org.springframework.web.util.Log4jConfigListener
        listener-class>
    listener>
web-app>

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    以上就是SSM配置的整合，配置完成后只需要进行相应的接口以及类的开发即可。

    1. 创建index.jsp页面
    <%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title heretitle>
head>
<body>
    <form action="${pageContext.request.contextPath }/select" method="post">
        输入用户名：<input type="text" name="uname"/><br>
        <input type="submit" value="提交"/>
    form>
body>
html>

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    1. 创建实体类
    package com.ssm.pojo;
public class MyUser {
    private Integer uid;
    private String uname;
    private String usex;

    public Integer getUid() {
        return uid;
    }

    public void setUid(Integer uid) {
        this.uid = uid;
    }

    public String getUname() {
        return uname;
    }

    public void setUname(String uname) {
        this.uname = uname;
    }

    public String getUsex() {
        return usex;
    }

    public void setUsex(String usex) {
        this.usex = usex;
    }
}

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    1. 创建dao层

    dao的接口

    package com.ssm.dao;
import java.util.List;
import org.springframework.stereotype.Repository;
import com.ssm.pojo.MyUser;

@Repository("userDao")
/*
* 使用Spring自动扫描MyBatis的接口并装配 （Spring将指定包中所有被@Mapper注解标注的接口自动装配为Mybatis的映射接口
*/
public interface UserDao {
    /**
     * 接口方法对应SQL映射文件UserMapper.xml中的id
     */
    public List<MyUser> selectUserByUname(MyUser user);
}

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    1. 创建service层
      service层接口
    package com.ssm.service;
import java.util.List;
import com.ssm.pojo.MyUser;
public interface UserService {
    public List<MyUser> selectUserByUname(MyUser user);
}

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    接口实现类

    package com.ssm.service;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.ssm.dao.UserDao;
import com.ssm.pojo.MyUser;

@Service("userService")
@Transactional
/**
* 加上注解@Transactional可以指定这个类需要受Spring的事务管理，
*注意@Transactional只能针对public属性范围内的方法添加，
*本案例并不需要处理事务，在这里只是告诉读者如何使用事务
*/
public class UserServiceImpl implements UserService {
    @Autowired
    private UserDao userDao;

    @Override
    public List<MyUser> selectUserByUname(MyUser user) {
        return userDao.selectUserByUname(user);
    }
}

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    1. 创建controller层

    Controller类

    package com.ssm.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.ssm.dao.UserDao;
import com.ssm.pojo.MyUser;

@Controller
public class UserController {
    @Autowired
    private UserDao userDao;

    @RequestMapping("/select")
    public String select(MyUser user, Model model) {
        List<MyUser> list = userDao.selectUserByUname(user);
        model.addAttribute("userList", list);
        return "userList";
    }
}

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    1. 数据显示层 userList.jsp
    <%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title heretitle>
head>
<body>
    用户信息
    <br>
    <c:forEach items="${userList }" var="user">
    ${user.uid }    
    ${user.uname }    
    ${user.usex }<br>
    c:forEach>
body>
html>

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    1. 配置tomcat
    2. 发布并运行
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  • 原文地址：https://blog.csdn.net/CXYCMY/article/details/128180596