SSM整合之XML配置方式(含事务管理)详细教程

SSM是一种常见的Java Web开发框架，它是由Spring、SpringMVC和MyBatis三个框架整合而成，用于简化企业级应用程序的开发。

Spring：Spring是一个轻量级的开源框架，它提供了许多功能，如依赖注入、事务管理、安全性等，可以帮助开发者快速构建稳健的应用程序。SpringMVC：SpringMVC是一个基于MVC模式的框架，它用于将应用程序分为不同的层次，包括模型、视图和控制层，使得应用程序的架构更加清晰，易于维护和扩展。MyBatis：MyBatis是一个优秀的持久层框架，它支持自定义SQL语句、存储过程和事务处理等功能，使得开发者可以更加方便地进行数据库操作。 通过整合这三个框架，SSM可以充分发挥各自的优势，实现更加高效、灵活和可扩展的应用程序开发.

本文通过项目案例的形式，通过使用MVC的形式介绍SSM整合的具体过程，项目结构如下：

每个文件的具体内容，如下所示：

1.依赖：pom.xml

javax.servlet

javax.servlet-api

4.0.1

provided

org.springframework

spring-context

5.3.20

org.springframework

spring-jdbc

5.3.20

org.springframework

spring-web

5.3.20

org.springframework

spring-webmvc

5.3.20

org.aspectj

aspectjweaver

1.9.7

org.springframework

spring-tx

5.3.20

org.mybatis

mybatis

3.5.4

org.mybatis

mybatis-spring

1.3.2

mysql

mysql-connector-java

8.0.29

org.apache.commons

commons-dbcp2

2.11.0

org.projectlombok

lombok

1.18.30

javax.servlet

jstl

1.2

2. web.xml

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">

org.springframework.web.context.ContextLoaderListener

contextConfigLocation

classpath:applicationContext.xml

encondig

org.springframework.web.filter.CharacterEncodingFilter

encoding

UTF-8

encondig

/*

springmvc

org.springframework.web.servlet.DispatcherServlet

contextConfigLocation

classpath:spring-mvc.xml

springmvc

/

3.Spring核心配置文件：applicationContext.xml

xmlns:tx="http://www.springframework.org/schema/tx"

xmlns:aop="http://www.springframework.org/schema/aop"

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/tx

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

http://www.springframework.org/schema/aop

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

4. SpringMVC的配置文件：spring-mvc.xml

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">

5.MyBatis配置文件：mybatis-config.xml

PUBLIC "-//mybatis.org//DTD Config 3.0//EN"

"http://mybatis.org/dtd/mybatis-3-config.dtd">

6. 实体类：Student

import lombok.Data;

@Data

public class Student {

private int id;

private String name;

private String birth;

private String sex;

}

7. 控制层：StudentQueryController

public class StudentQueryController implements Controller {

private StudentService studentService;

public void setStudentService(StudentService studentService) {

this.studentService = studentService;

}

@Override

public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {

ModelAndView mav = new ModelAndView();

List students = studentService.listStudents();

mav.addObject("students",students);

mav.setViewName("show");

return mav;

}

}

8. 服务层：StudentService接口 与 接口实现类

import java.util.List;

public interface StudentService {

public List listStudents();

}

import java.util.List;

public class StudentServiceImpl implements StudentService {

private StudentMapper studentMapper;

public void setStudentMapper(StudentMapper studentMapper) {

this.studentMapper = studentMapper;

}

@Override

public List listStudents() {

return studentMapper.listStudents();

}

}

9. 持久层：StudentMapper

public interface StudentMapper {

public List listStudents();

}

10. 持久层映射文件：StudentMapper.xml

PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"

"http://mybatis.org/dtd/mybatis-3-mapper.dtd">

select * from t_student;

11. 首页面：index.jsp

查看所有学生信息

12. 展示页面：show.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

序号	姓名	出生日期	性别	操作
${status.index+1}	${student.name}	${student.birth}	${student.sex}	删除

13. 数据库表结构

mysql> desc t_student;

+-------+-------------+------+-----+---------+-------+

| Field | Type | Null | Key | Default | Extra |

+-------+-------------+------+-----+---------+-------+

| id | int | NO | PRI | NULL | |

| name | varchar(10) | YES | | NULL | |

| birth | varchar(20) | YES | | NULL | |

| sex | varchar(10) | YES | | NULL | |

+-------+-------------+------+-----+---------+-------+

到此，整个配置整理完毕！