1、首先创建一个普通的Maven的项目
2、配置pom.xml,导入依赖(包含所需的jar包和静态资源导出:让.xml和resource下的东西导出)
依赖:junit,数据库驱动,连接池,servlet,jsp,mybatis,mybatis-spring,spring,Lombok
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.rk</groupId>
<artifactId>SSM框架整合</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<!--Junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!--数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!-- 数据库连接池 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!--Servlet - JSP -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!--Mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.2</version>
</dependency>
<!--Spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
<!--Lombok偷懒专用插件,实体类不用写get,set,toString和构造方法-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.10</version>
</dependency>
</dependencies>
<!--Maven静态资源导出-->
<build>
<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>
3、建立基本结构和配置框架
-
com.rk.pojo
-
com.rk.dao
-
com.rk.service
-
com.rk.controller
-
com.rk.fliter
-
com.rk.utils
-
在resources下创mybatis-config.xml文件
-
<?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> </configuration>
-
在resources下创applicationContext.xml文件
-
<?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 http://www.springframework.org/schema/beans/spring-beans.xsd"> </beans>
- 完成后的包结构:
4、Mybatis层编写及相关配置
4.1、在数据库配置文件 database.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/rk?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=luolin123
jdbc.url=jdbc:第一个参数安全连接:useSSL=true
第二个参数设置编码:useUnicode=true&characterEncoding=utf8
如果使用的是MySQL8.0+,在jdbc.url=jdbc:增加一个配置时区的参数:
& serverTimezone=Asia/Shanghai
4.2、编写Mybatis的核心配置文件
<?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>
<!--配置数据源,交给Spring去做-->
<typeAliases>
<package name="com.rk.pojo"/>
</typeAliases>
<mappers>
<mapper resource="com/rk/dao/BookMapper.xml"/>
</mappers>
</configuration>
4.3、在pojo包下创建实体类Books
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data//get,set,toString方法不用写
@AllArgsConstructor//有参构造
@NoArgsConstructor//无参构造
public class Books {
private int bookID;
private String bookName;
private int bookCounts;
private String detail;
}
其属性名要和数据中表的列相同
4.4、创建一个持久层接口BookMapper
package com.rk.dao;
import com.rk.pojo.Books;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface BookMapper {
//增加一本书
int addBook(Books books);
//删除一本书
int deleteBookById(@Param("bookId") int id);
//更新一本书
int updateBook(Books books);
//查询一本书
Books queryBookById(@Param("bookId") int id);
//查询全部的书
List<Books> queryAllBook();
}
4. 5、创建对应的配置文件BookMapper.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.rk.dao.BookMapper"><!--绑定接口-->
<!--增加一个Book-->
<insert id="addBook" parameterType="Books">
insert into rk.books (bookName,bookCounts,detail)
values (#{bookName},#{bookCounts},#{detail});
</insert>
<!--根据id删除一个Book-->
<delete id="deleteBookById" parameterType="int">
delete from rk.books
where bookID=#{bookId}
</delete>
<!--更新Book-->
<update id="updateBook" parameterType="Books">
update rk.books
set bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}
where bookID=#{bookID};
</update>
<!--根据id查询,返回一个Book-->
<select id="queryBookById" resultType="Books">
select * from rk.books
where bookID=#{bookId};
</select>
<!--查询全部Book-->
<select id="queryAllBook" resultType="Books">
select * from rk.books;
</select>
</mapper>
4.6、编写Service层的接口和实现类
BookService
package com.rk.service;
import com.rk.pojo.Books;
import java.util.List;
public interface BookService {
//增加一本书
int addBook(Books books);
//删除一本书
int deleteBookById(int id);
//更新一本书
int updateBook(Books books);
//查询一本书
Books queryBookById(int id);
//查询全部的书
List<Books> queryAllBook();
}
BookServiceImpl
package com.rk.service.Impl;
import com.rk.dao.BookMapper;
import com.rk.pojo.Books;
import com.rk.service.BookService;
import java.util.List;
public class BookServiceImpl implements BookService {
//业务层调用dao层,组合dao层
private BookMapper bookMapper;
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
public int addBook(Books books) {
return bookMapper.addBook(books);
}
public int deleteBookById(int id) {
return bookMapper.deleteBookById(id);
}
public int updteBook(Books books) {
return bookMapper.updateBook(books);
}
public Books queryBookById(int id) {
return bookMapper.queryBookById(id);
}
public List<Books> queryAllBook() {
return bookMapper.queryAllBook();
}
}
5、Spring层编写
5.1整合Mybatis层,编写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
http://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:database.properties"/>
<!--2、连接池 id必须为dataSource
dbcp(半自动化操作,不能自动连接)、c3p0(自动化操作,并且可以自动设置到对象中)、druid -->
<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}"/>
<!-- c3p0连接池的私有属性 -->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!-- 关闭连接后不自动commit -->
<property name="autoCommitOnClose" value="false"/>
<!-- 获取连接超时时间 -->
<property name="checkoutTimeout" value="10000"/>
<!-- 当获取连接失败重试次数 -->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!--3、sqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!--绑定Mybatis的配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!--4、配置dao接口扫描包,动态的实现了Dao接口可以注入到Spring容器中-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--注入sqlSessionFactory-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--要扫描的包-->
<property name="basePackage" value="com.rk.dao"/>
</bean>
</beans>
5.2、Spring整合service层、编写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:contxt="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 https://www.springframework.org/schema/context/spring-context.xsd">
<!--1、扫描serviece下的包-->
<contxt:component-scan base-package="com.rk.service"/>
<!--2、将我们所有的业务类,注入到Spring,可以通过配置或者注解实现-->
<bean id="BookServiceImpl" class="com.rk.service.Impl.BookServiceImpl">
<property name="bookMapper" ref="bookMapper"/>
</bean>
<!--3、声明式事务配置-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
<!--4、aop事务支持-->
</beans>
注意: 所有的Spring.xml文件必须要关联在同一个上下文(context)中,这样所有关联在一起的注册类都可以相互引用,例如上面的bookMapper
6、SpringMVC层的编写
6.1增加Web支持
6.2、在resource下创建一个spring-mvc.xml文件
<?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
http://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、扫描包:controller-->
<context:component-scan base-package="com.rk.controller"/>
<!--4、视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
6.3、编写web.xml文件
<?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">
<!--1、DispatchServlet-->
<servlet>
<servlet-name>DispatchServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>DispatchServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--2、乱码过滤-->
<filter>
<filter-name>encodingFilter</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>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--3、配置Session过期时间-->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>
6.4、在applicationContext中引入spring-dao.xml、spring-servlet.xml、spring-mvc.xml文件
<?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
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>
7、Controller 和 视图层编写
7.1、查询书籍
Controller
package com.rk.controller;
import com.rk.pojo.Books;
import com.rk.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.RequestMapping;
import java.util.List;
@Controller
@RequestMapping("/book")
public class BookController {
//controller调service层
@Autowired
@Qualifier("BookServiceImpl")
private BookService bookService;
//查询全部的书籍,并且返回到一个书籍展示页面
@RequestMapping("/allBook")
public String list(Model model){
List<Books> books = bookService.queryAllBook();
model.addAttribute("list",books);
return "allBook";
}
}
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 Bootstrap -->
<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">
<a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<table class="table table-hover table-striped">
<thead>
<tr>
<th>书籍编号</th>
<th>书籍名称</th>
<th>书籍数量</th>
<th>书籍详情</th>
</tr>
</thead>
<tbody>
<C:forEach var="book" items="${list}">
<tr>
<td>${book.bookID}</td>
<td>${book.bookName}</td>
<td>${book.bookCounts}</td>
<td>${book.detail}</td>
</tr>
</C:forEach>
</tbody>
</table>
</div>
</div>
</div>
</body>
</html>
7.2、新增书籍
Controller
//跳转到增加书籍页面
@RequestMapping("/toAddBook")
public String toAddPaper(){
return "addBook";
}
//添加书籍的请求
@RequestMapping("/addBook")
public String addBook(Books books){
int i = bookService.addBook(books);
return "redirect:/book/allBook";//重定向到allBook请求
}
因为当书籍在数据库增加时,要重新发起请求,才能在allBook页面显示
增加页面:addBook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>添加书籍</title>
<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 method="post" action="${pageContext.request.contextPath}/book/addBook">
<div class="form-group">
<label>书籍名称:</label>
<input type="text" name="bookName" class="form-control" required>
</div>
<div class="form-group">
<label>书籍数量:</label>
<input type="text" name="bookCounts" class="form-control" required>
</div>
<div class="form-group">
<label>书籍描述:</label>
<input type="text" name="detail" class="form-control" required>
</div>
<div class="form-group">
<input type="submit" class="form-control" value="添加">
</div>
</form>
</div>
</body>
</html>
7.3修改和删除书籍
Controller
//跳转到修改书籍页面 并且要携带一本书籍的信息
@RequestMapping("/toUpdateBook")
public String toUpdatePaper(int id,Model model){
Books books = bookService.queryBookById(id);
model.addAttribute("Qbooks",books);
return "updateBook";
}
//修改书籍
@RequestMapping("/updateBook")
public String updateBook(Books books)
{
int i = bookService.updateBook(books);
return "redirect:/book/allBook";//重定向到allBook请求
}
//删除书籍
@RequestMapping("/deleteBook")
public String deleteBook(int id)
{
bookService.deleteBookById(id);
return "redirect:/book/allBook";//重定向到allBook请求
}
updateBook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改书籍</title>
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>修改书籍书籍</small>
</h1>
</div>
</div>
</div>
<form method="post" action="${pageContext.request.contextPath}/book/updateBook">
<input type="hidden" name="bookID" value="${Qbooks.bookID}"/>
<div class="form-group">
<label>书籍名称:</label>
<input type="text" name="bookName" class="form-control" value="${Qbooks.bookName}" required>
</div>
<div class="form-group">
<label>书籍数量:</label>
<input type="text" name="bookCounts" class="form-control" value="${Qbooks.bookCounts}" required>
</div>
<div class="form-group">
<label>书籍描述:</label>
<input type="text" name="detail" class="form-control" value="${Qbooks.detail}" required>
</div>
<div class="form-group">
<input type="submit" class="form-control" value="修改">
</div>
</form>
</div>
</body>
</html>
7.4、查询功能
从bookMapper层开始
//通过书名查询一本书
Books queryBookByName(@Param("bookName") String name);
bookMapper.xml
<select id="queryBookByName" resultType="Books">
select * from rk.books where bookName= #{bookName}
</select>
BookServiceImpl
public Books queryBookByName(String name) {
return bookMapper.queryBookByName(name);
}
controller
//查询
@RequestMapping("/queryBook")
public String queryBook(String queryBookName, Model model)
{
Books books = bookService.queryBookByName(queryBookName);
if(books==null)
return "redirect:/book/allBook";
List<Books> list=new ArrayList<Books>();
list.add(books);
System.out.println(books);
model.addAttribute("list",list);
return "allBook";
}
框架搭建完成后,如果要增加功能,要从底层一层一层往上写