环境要求:
完整的项目地址为:https://codechina.csdn.net/dreaming_coder/ssm
/*
Navicat MySQL Data Transfer
Source Server : ice
Source Server Version : 80021
Source Host : localhost:3306
Source Database : ssm
Target Server Type : MYSQL
Target Server Version : 80021
File Encoding : 65001
Date: 2021-01-14 21:34:07
*/
SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for books
-- ----------------------------
DROP TABLE IF EXISTS `books`;
CREATE TABLE `books` (
`book_id` int NOT NULL AUTO_INCREMENT COMMENT '书本编号',
`book_name` varchar(100) NOT NULL COMMENT '书名',
`book_counts` int NOT NULL COMMENT '数量',
`detail` varchar(200) DEFAULT NULL COMMENT '描述',
PRIMARY KEY (`book_id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of books
-- ----------------------------
INSERT INTO `books` VALUES ('1', 'Java', '1', '从入门到放弃');
INSERT INTO `books` VALUES ('2', 'MySQL', '10', '从删库到跑路');
INSERT INTO `books` VALUES ('3', 'Linux', '5', '从进门到进牢');
添加 web 支持
导入相关依赖
<dependencies>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.13version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>8.0.22version>
dependency>
<dependency>
<groupId>com.mchangegroupId>
<artifactId>c3p0artifactId>
<version>0.9.5.5version>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>servlet-apiartifactId>
<version>2.5version>
dependency>
<dependency>
<groupId>javax.servlet.jspgroupId>
<artifactId>jsp-apiartifactId>
<version>2.2version>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>jstlartifactId>
<version>1.2version>
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>org.springframeworkgroupId>
<artifactId>spring-webmvcartifactId>
<version>5.3.2version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jdbcartifactId>
<version>5.3.2version>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<version>RELEASEversion>
<scope>compilescope>
dependency>
dependencies>
Maven 设置静态资源过滤
<build>
<resources>
<resource>
<directory>src/main/javadirectory>
<includes>
<include>**/*.propertiesinclude>
<include>**/*.xmlinclude>
includes>
<filtering>falsefiltering>
resource>
<resource>
<directory>src/main/resourcesdirectory>
<includes>
<include>**/*.propertiesinclude>
<include>**/*.xmlinclude>
includes>
<filtering>falsefiltering>
resource>
resources>
build>
建立基本结构和配置框架
com.ice.pojo
com.ice.mapper
com.ice.service
com.ice.controller
mybatis-config.xml
<configuration>
configuration>
applicationContext.xml
<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"
xmlns:aop="http://www.springframework.org/schema/aop"
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 http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
beans>
数据库配置文件 database.properties
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis?serverTimezone=Asia/Shanghai&useSSL=true&useUnicode=true&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=root
IDEA 关联数据库
编写MyBatis的核心配置文件
<configuration>
<typeAliases>
<package name="com.ice.pojo"/>
typeAliases>
configuration>
编写实体类
package com.ice.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
private int id;
private String name;
private int counts;
private String detail;
}
编写 Dao 层的 Mapper 接口
package com.ice.mapper;
import com.ice.pojo.Books;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface BookMapper {
// 增加一本书
int addBook(@Param("book") Books book);
// 删除一本书
int deleteBookById(@Param("id") int id);
// 更新一本书
int updateBook(@Param("book") Books book);
// 根据 id 查询一本书
Books queryBookById(@Param("id") int id);
// 查询全部的书
List<Books> queryAllBooks();
}
编写接口对应的 Mapper.xml 文件
<mapper namespace="com.ice.mapper.BookMapper">
<insert id="addBook" parameterType="Books">
insert into ssm.books (book_name, book_counts, detail)
values (#{name}, #{counts}, #{detail});
insert>
<delete id="deleteBookById" parameterType="int">
delete
from ssm.books
where book_id = #{id};
delete>
<update id="updateBook" parameterType="Books">
update ssm.books
set book_name = #{name},
book_counts = #{counts},
detail = #{detail}
where book_id = #{id};
update>
<select id="queryBookById" parameterType="int" resultMap="bookMap">
select *
from ssm.books
where book_id = #{id};
select>
<select id="queryAllBooks" resultMap="bookMap">
select *
from ssm.books;
select>
<resultMap id="bookMap" type="Books">
<id property="id" column="book_id"/>
<result property="name" column="book_name"/>
<result property="counts" column="book_counts"/>
<result property="details" column="details"/>
resultMap>
mapper>
编写Service层的接口和实现类
【接口】
package com.ice.service;
import com.ice.pojo.Books;
import java.util.List;
public interface BookService {
// 增加一本书
int addBook(Books book);
// 删除一本书
int deleteBookById(int id);
// 更新一本书
int updateBook(Books book);
// 根据 id 查询一本书
Books queryBookById(int id);
// 查询全部的书
List<Books> queryAllBooks();
}
【实现类】
package com.ice.service;
import com.ice.mapper.BookMapper;
import com.ice.pojo.Books;
import java.util.List;
public class BookServiceImpl implements BookService {
private BookMapper bookMapper;
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
@Override
public int addBook(Books book) {
return bookMapper.addBook(book);
}
@Override
public int deleteBookById(int id) {
return bookMapper.deleteBookById(id);
}
@Override
public int updateBook(Books book) {
return bookMapper.updateBook(book);
}
@Override
public Books queryBookById(int id) {
return bookMapper.queryBookById(id);
}
@Override
public List<Books> queryAllBooks() {
return bookMapper.queryAllBooks();
}
}
配置Spring整合MyBatis,我们这里数据源使用 c3p0 连接池,编写 Spring 整合 Mybatis 的相关的配置文件 spring-dao.xml
<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:database.properties"/>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<property name="autoCommitOnClose" value="false"/>
<property name="checkoutTimeout" value="10000"/>
<property name="acquireRetryAttempts" value="2"/>
bean>
<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="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<property name="basePackage" value="com.ice.mapper"/>
bean>
beans>
Spring 整合 service 层
<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:component-scan base-package="com.ice.service"/>
<bean id="bookServiceImpl" class="com.ice.service.BookServiceImpl">
<property name="bookMapper" ref="bookMapper"/>
bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
bean>
beans>
配置 web.xml
<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">
<servlet>
<servlet-name>SpringMVCservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:applicationContext.xmlparam-value>
init-param>
<load-on-startup>1load-on-startup>
servlet>
<servlet-mapping>
<servlet-name>SpringMVCservlet-name>
<url-pattern>/url-pattern>
servlet-mapping>
<filter>
<filter-name>encodingfilter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
<init-param>
<param-name>encodingparam-name>
<param-value>utf-8param-value>
init-param>
filter>
<filter-mapping>
<filter-name>encodingfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
<session-config>
<session-timeout>15session-timeout>
session-config>
web-app>
配置 spring-mvc.xml
<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.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<mvc:annotation-driven />
<mvc:default-servlet-handler/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
bean>
<context:component-scan base-package="com.ice.controller"/>
beans>
Spring 配置整合文件,applicationContext.xml
<beans xmlns="http://www.springframework.org/schema/beans"
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">
<import resource="classpath:spring-dao.xml"/>
<import resource="classpath:spring-service.xml"/>
<import resource="classpath:spring-mvc.xml"/>
beans>
BookController 类编写
package com.ice.controller;
import com.ice.pojo.Books;
import com.ice.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.List;
@Controller
@RequestMapping("/book")
public class BookController {
@Autowired
@Qualifier("bookServiceImpl")
private BookService bookService;
// 查询全部书籍,并返回一个书籍展示页面
@RequestMapping("/list")
public String list(Model model) {
List<Books> list = bookService.queryAllBooks();
model.addAttribute("list", list);
return "list";
}
@RequestMapping("/toAddBook")
public String toAddBook() {
return "addBook";
}
@RequestMapping("/add")
public String add(Books book) {
bookService.addBook(book);
return "redirect:/book/list";
}
@RequestMapping("/toUpdateBook")
public String toUpdateBook(Model model, int id) {
Books book = bookService.queryBookById(id);
model.addAttribute("book", book);
return "updateBook";
}
@RequestMapping("/update")
public String update(Model model, Books book) {
bookService.updateBook(book);
return "redirect:/book/list";
}
@RequestMapping("/delete/{bookId}")
public String delete(@PathVariable("bookId") int id) {
bookService.deleteBookById(id);
return "redirect:/book/list";
}
}
编写首页 index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>首页title>
<style type="text/css">
a {
text-decoration: none;
color: black;
font-size: 18px;
}
h3 {
width: 180px;
height: 38px;
margin: 100px auto;
text-align: center;
line-height: 38px;
background: deepskyblue;
border-radius: 4px;
}
style>
head>
<body>
<h3><a href="${pageContext.request.contextPath}/book/list">进入书籍页面a>h3>
body>
html>
书籍列表页面 list.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>书籍展示title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>书籍列表 —— 显示所有书籍small>
h1>
div>
div>
div>
<div class="row">
<div class="col-md-4 column">
<a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增a>
div>
div>
<div class="row clearfix">
<div class="col-md-12 column">
<table class="table table-hover table-striped">
<thead>
<tr>
<th>书籍编号th>
<th>书籍名字th>
<th>书籍数量th>
<th>书籍详情th>
<th>操作th>
tr>
thead>
<tbody>
<c:forEach var="book" items="${requestScope.get('list')}">
<tr>
<td>${book.getId()}td>
<td>${book.getName()}td>
<td>${book.getCounts()}td>
<td>${book.getDetail()}td>
<td>
<a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.getId()}">更改a> |
<a href="${pageContext.request.contextPath}/book/delete/${book.getId()}">删除a>
td>
tr>
c:forEach>
tbody>
table>
div>
div>
div>
body>
html>
添加书籍页面:addBook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>新增书籍title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>新增书籍small>
h1>
div>
div>
div>
<form action="${pageContext.request.contextPath}/book/add" method="post">
书籍名称:<input type="text" name="name"><br><br><br>
书籍数量:<input type="text" name="counts"><br><br><br>
书籍详情:<input type="text" name="detail"><br><br><br>
<input type="submit" value="添加">
form>
div>
body>
html>
修改书籍页面 updateBook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改书籍title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>新增信息small>
h1>
div>
div>
div>
<form action="${pageContext.request.contextPath}/book/update" method="post">
<input type="hidden" name="id" value="${book.getId()}"/>
书籍名称:<input type="text" name="name" value="${book.getName()}"/>
书籍数量:<input type="text" name="counts" value="${book.getCounts()}"/>
书籍详情:<input type="text" name="detail" value="${book.getDetail() }"/>
<input type="submit" value="提交"/>
form>
div>
body>
html>