刚学完狂神说的ssm框架,花了两天时间把狂神的ssm整合项目写完
狂神视频
实现功能
第一个ssm整合项目
基本骨架
1.环境
- IDEA
- MySQL 8.0
- Tomcat 7
- Maven 3.6
2.数据库环境
数据库表
CREATE DATABASE `summer01`;
USE `summer01`;
DROP TABLE IF EXISTS `books`;
CREATE TABLE `books` (
`bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
`bookName` VARCHAR(100) NOT NULL COMMENT '书名',
`bookCounts` INT(11) NOT NULL COMMENT '数量',
`detail` VARCHAR(200) NOT NULL COMMENT '描述',
KEY `bookID` (`bookID`)
) ENGINE=INNODB DEFAULT CHARSET=utf8
INSERT INTO `books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES
(1,'Java',1,'从入门到放弃'),
(2,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到进牢');
3.基本环境搭建
3.1新建maven项目,添加web支持
3.2 pom.xml依赖和配置
<!-- 依赖:junit,数据库,连接池,servlet,mybatis,mybatis-spring,spring,-->
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.19</version>
</dependency>
<!-- 数据库连接池-->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet.jsp/jsp-api -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.7.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.7.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
</dependencies>
<!-- 不加的话在.xml文件中写中文会com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException -->
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
4.dao层
4.1 db.properties
注意不能写username,原因在上一篇博客:ssm整合报错(一)
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/summer01?useUnicode=true&characterEncoding=utf8&serverTimezone=UTC
jdbc.username=root
jdbc.password=18170021
4.2 IDEA关联数据库并编写mybatisConfig.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<setting name="logImpl" value="log4j"/>
</settings>
<typeAliases>
<typeAlias type="com.wang.entity.Books" alias="Books"/>
</typeAliases>
<mappers>
<mapper resource="com/wang/mapper/BookMapper.xml"/>
</mappers>
</configuration>
4.3 编写数据库对应的实体类
4.4 dao层的mapper接口
BookMapper.class
package com.wang.mapper;
import com.wang.entity.Books;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface BookMapper {
//增加一本书
public boolean addBook(Books books);
//删除一本书
public boolean deleteBookByID(@Param("bookID") int id);
//更新一本书
public boolean updateBook(Books books);
//查询一本书
public Books queryBookByID(@Param("bookID") int id);
//查询所有书
public List<Books> queryAllBook();
//根据用户名查书
public List<Books> queryBookByName(@Param("bookName") String bookName);
}
4.5 编写mapper.xml文件
<?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.wang.mapper.BookMapper">
<insert id="addBook" parameterType="Books">
insert into books (bookName, bookCounts, detail)
values (#{bookName},#{bookCounts},#{detail});
</insert>
<delete id="deleteBookByID">
delete from books where bookID = #{bookID}
</delete>
<update id="updateBook" parameterType="Books">
update books
set bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail}
where bookID = #{bookID}
</update>
<select id="queryBookByID" resultType="Books">
select * from books where bookID = #{bookID}
</select>
<select id="queryAllBook" resultType="Books">
select * from books
</select>
<select id="queryBookByName" resultType="Books">
select * from books where bookName like concat('%',#{bookName},'%')
</select>
</mapper>
5.service层
5.1 接口
package com.wang.service;
import com.wang.entity.Books;
import java.util.List;
public interface BookService {
//增加一本书
public boolean addBook(Books books);
//删除一本书
public boolean deleteBookByID(int id);
//更新一本书
public boolean updateBook(Books books);
//查询一本书
public Books queryBookByID(int id);
//查询所有书
public List<Books> queryAllBook();
//通过书查书
public List<Books> queryBookByName(String bookName);
}
5.2 实现类
package com.wang.service;
import com.wang.entity.Books;
import com.wang.mapper.BookMapper;
import java.util.List;
public class BookServiceImpl implements BookService {
//业务层调dao层,要有set方法交给spring托管
private BookMapper bookMapper;
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
public boolean addBook(Books books) {
return bookMapper.addBook(books);
}
public boolean deleteBookByID(int id) {
return bookMapper.deleteBookByID(id);
}
public boolean updateBook(Books books) {
return bookMapper.updateBook(books);
}
public Books queryBookByID(int id) {
return bookMapper.queryBookByID(id);
}
public List<Books> queryAllBook() {
return bookMapper.queryAllBook();
}
public List<Books> queryBookByName(String bookName) {
return bookMapper.queryBookByName(bookName);
}
}
到此,底层需求操作编写完毕!
6.spring层
6.1 配置Spring整合MyBatis,spring-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
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<!-- 1.关联数据库配置文件 -->
<context:property-placeholder location="classpath:db.properties"/>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!-- 3.SqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 绑定mybatis配置文件 -->
<property name="configLocation" value="classpath:mybatisConfig.xml"/>
</bean>
<!-- 4.配置扫描Dao接口包,动态实现Dao接口注入到spring容器中,不用写实现类了也可以注入,基于反射 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 给出需要扫描Dao接口包 -->
<property name="basePackage" value="com.wang.mapper"/>
</bean>
</beans>
6.2 spring整合service层,spring-service.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
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<!-- 1.扫描service相关的bean -->
<context:component-scan base-package="com.wang.service" />
<!--2.将我们所有业务类注入到spring,可以通过配置或者注解实现-->
<bean id="BookServiceImpl" class="com.wang.service.BookServiceImpl">
<property name="bookMapper" ref="bookMapper"/>
</bean>
<!-- 3.配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource" />
</bean>
</beans>
spring层搞定,spring层主要整合Dao和service
7.SpringMVC层
7.1 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">
<!--DispatcherServlet-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!--一定要注意:我们这里加载的是总的配置文件-->
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 配置springmvc中乱码过滤 -->
<filter>
<filter-name>encoding</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-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
7.2 spring-mvc.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"
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
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 1.注解驱动-->
<mvc:annotation-driven />
<!-- 2.静态资源过滤-->
<mvc:default-servlet-handler />
<!-- 3.自动扫描包-->
<context:component-scan base-package="com.wang.controller"/>
<!-- 4.视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver">
<!-- 前缀 -->
<property name="prefix" value="/WEB-INF/jsp/" />
<!-- 后缀 -->
<property name="suffix" value=".jsp" />
</bean>
</beans>
7.3 Spring配置整合文件,applicationContext.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd">
<import resource="spring-dao.xml"/>
<import resource="spring-service.xml"/>
<import resource="spring-mvc.xml"/>
</beans>
配置文件结束,接下来是controller和视图层编写
8.controller和视图层
controller层方法
package com.wang.controller{
@Controller
@RequestMapping("/book")
public class BookController {
//controller层调service层
@Autowired
@Qualifier("BookServiceImpl")
private BookService bookService;
//查询全部书籍并展示
@GetMapping("/allBook")
public String showAllBooks(String queryBookName,Model model){
List<Books> books = bookService.queryAllBook();
model.addAttribute("books",books);
return "allBook";
}
//跳转到新增书籍页面
@GetMapping("/toAddBook")
public String toAddBook(){
return "addBook";
}
//增加书籍
@PostMapping("/addBook")
public String addBook(Books books){
bookService.addBook(books);
return "redirect:/book/allBook"; //重定向到 @GetMapping("/allBook")
}
//跳转到修改书籍页面
@GetMapping("/toUpdateBook")
public String toUpdateBook(int id,Model model){
Books books = bookService.queryBookByID(id);
model.addAttribute("books",books);
return "updateBook";
}
@GetMapping("/deleteBook")
public String deleteBook(int id){
bookService.deleteBookByID(id);
return "redirect:/book/allBook";
}
@PostMapping("/updateBook")
public String updateBook(Books books){
System.out.println(books);
bookService.updateBook(books);
return "redirect:/book/allBook"; //重定向到 @GetMapping("/allBook")
}
@PostMapping("/queryBook")
public String queryBook(String queryBookName,Model model){
List<Books> books = bookService.queryBookByName(queryBookName);
model.addAttribute("books",books);
return "allBook";
}
}
8.1 方法一查询全部书籍
8.1.1 controller层
//查询全部书籍并展示
@GetMapping("/allBook")
public String showAllBooks(String queryBookName,Model model){
List<Books> books = bookService.queryAllBook();
model.addAttribute("books",books);
return "allBook";
}
8.1.2 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="${pageContext.request.contextPath}/book/allBook">展示所有书籍</a>
</h3>
</body>
</html>
8.1.3 书籍列表页面 allBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>书籍展示页面</title>
<!-- 引入在线 Bootstrap -->
<link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>书籍列表 —— 显示所有书籍</small>
</h1>
</div>
</div>
</div>
<div class="row">
<div class="col-md-4 column">
<a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增</a>
<a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">显示所有书籍</a>
</div>
<div class="col-md-4 column">
<form class="navbar-form navbar-left" role="search" method="post" action="${pageContext.request.contextPath}/book/queryBook">
<div class="form-group">
<input type="text" class="form-control" placeholder="请输入要查询的书籍" name="queryBookName">
<button type="submit" class="btn btn-primary">查询</button>
</div>
</form>
</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>书籍操作</th>
</tr>
</thead>
<tbody>
<c:forEach items="${books}" var="book">
<tr>
<td>${book.getBookID()}</td>
<td>${book.getBookName()}</td>
<td>${book.getBookCounts()}</td>
<td>${book.getDetail()}</td>
<td>
<a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.getBookID()}">修改</a>
|
<a href="${pageContext.request.contextPath}/book/deleteBook?id=${book.getBookID()}">删除</a>
</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</div>
</body>
</html>
8.2 方法二 添加书籍
//跳转到新增书籍页面
@GetMapping("/toAddBook")
public String toAddBook(){
return "addBook";
}
//增加书籍
@PostMapping("/addBook")
public String addBook(Books books){
bookService.addBook(books);
return "redirect:/book/allBook"; //重定向到 @GetMapping("/allBook")
}
addBook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>新增书籍</title>
<link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>新增书籍</small>
</h1>
</div>
</div>
</div>
<form method="post" action="${pageContext.request.contextPath}/book/addBook">
<div class="form-group">
<label for="bkname">书籍名称</label>
<input type="text" class="form-control" id="bkname" name="bookName" required>
</div>
<div class="form-group">
<label for="bkcount">书籍数量</label>
<input type="text" class="form-control" id="bkcount" name="bookCounts" required>
</div>
<div class="form-group">
<label for="bkdetail">书籍描述</label>
<input type="text" class="form-control" id="bkdetail" name="detail" required>
</div>
<div class="form-group">
<input type="submit" class="form-control" value="添加">
</div>
</form>
</div>
</body>
</html>
8.3 方法三 修改书籍
//跳转到修改书籍页面
@GetMapping("/toUpdateBook")
public String toUpdateBook(int id,Model model){
Books books = bookService.queryBookByID(id);
model.addAttribute("books",books);
return "updateBook";
}
@PostMapping("/updateBook")
public String updateBook(Books books){
bookService.updateBook(books);
return "redirect:/book/allBook"; //重定向到 @GetMapping("/allBook")
}
addBook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>新增书籍</title>
<link href="https://cdn.staticfile.org/twitter-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 method="post" action="${pageContext.request.contextPath}/book/addBook">
<div class="form-group">
<label for="bkname">书籍名称</label>
<input type="text" class="form-control" id="bkname" name="bookName" required>
</div>
<div class="form-group">
<label for="bkcount">书籍数量</label>
<input type="text" class="form-control" id="bkcount" name="bookCounts" required>
</div>
<div class="form-group">
<label for="bkdetail">书籍描述</label>
<input type="text" class="form-control" id="bkdetail" name="detail" required>
</div>
<div class="form-group">
<input type="submit" class="form-control" value="添加">
</div>
</form>
</div>
</body>
</html>
8.4 方法四 删除书籍
@GetMapping("/deleteBook")
public String deleteBook(int id){
bookService.deleteBookByID(id);
return "redirect:/book/allBook";
}
8.5 方法五 通过书名模糊查询
@PostMapping("/queryBook")
public String queryBook(String queryBookName,Model model){
List<Books> books = bookService.queryBookByName(queryBookName);
model.addAttribute("books",books);
return "allBook";
}