SSM整合及CRUD实现
文章目录
- 1. 基本环境搭建
- 2. Mybaitis层
- 3. Spring层
- 4. SpringMVC
- 5. CRUD业务测试
1. 基本环境搭建
数据库
CREATE DATABASE `ssmbuild`;
USE `ssmbuild`;
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');
创建项目导入依赖
<dependencies>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.12version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.47version>
dependency>
<dependency>
<groupId>com.mchangegroupId>
<artifactId>c3p0artifactId>
<version>0.9.5.2version>
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>3.5.2version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatis-springartifactId>
<version>2.0.2version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webmvcartifactId>
<version>5.1.9.RELEASEversion>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jdbcartifactId>
<version>5.1.9.RELEASEversion>
dependency>
dependencies>
maven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>
mybatis-config.xml
<configuration>
configuration>
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">
beans>
2. Mybaitis层
1.数据库配置文件 database.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456
2.IDEA关联数据库
3.编写MyBatis的核心配置文件
<configuration>
<typeAliases>
<package name="com.zh.pojo"/>
typeAliases>
<mappers>
<mapper resource="com/zh/dao/BookMapper.xml"/>
mappers>
configuration>
4.编写数据库对应的实体类
要导入lombok依赖
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
private int bookId;
private String bookName;
private int bookCounts;
private String detail;
}
5.编写Dao层的 Mapper接口
public interface BookMapper {
//增加一个Book
int addBook(Books book);
//根据id删除一个Book
int deleteBookById(@Param("bookId") int id);
//更新Book
int updateBook(Books book);
//根据id查询返回一个Book
Books queryBookById(@Param("bookId") int id);
//查询全部Book
List<Books> queryAllBook();
//根据书名查询
Books queryBookByName(String name);
}
6.编写接口对应的 Mapper.xml 文件
<mapper namespace="com.zh.dao.BookMapper">
<insert id="addBook" parameterType="Books">
insert into ssmbuild.books(bookName,bookCounts,detail)
values (#{bookName}, #{bookCounts}, #{detail})
insert>
<delete id="deleteBookById" parameterType="int">
delete from ssmbuild.books where bookID = #{bookId}
delete>
<update id="updateBook" parameterType="Books">
update ssmbuild.books set bookName=#{bookName},bookCounts=#{bookCounts}
,detail=#{detail} where bookID=#{bookId}
update>
<select id="queryBookById" resultType="Books">
select * from ssmbuild.books where bookID = #{bookId}
select>
<select id="queryAllBook" resultType="Books">
SELECT * from ssmbuild.books
select>
<select id="queryBookByName" resultType="Books" >
select * from ssmbuild.books where bookName like concat('%',#{name},'%')
select>
mapper>
7.编写Service层的接口和实现类
public interface BookService {
//增加一个Book
int addBook(Books book);
//根据id删除一个Book
int deleteBookById( int id);
//更新Book
int updateBook(Books book);
//根据id查询返回一个Book
Books queryBookById( int id);
//查询全部Book
List<Books> queryAllBook();
//根据书名查询
Books queryBookByName(String name);
}
public class BookServiceImpl implements BookService{
private BookMapper bookMapper;
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
public int addBook(Books book) {
return bookMapper.addBook(book);
}
public int deleteBookById(int id) {
return bookMapper.deleteBookById(id);
}
public int updateBook(Books book) {
return bookMapper.updateBook(book);
}
public Books queryBookById(int id) {
return bookMapper.queryBookById(id);
}
public List<Books> queryAllBook() {
return bookMapper.queryAllBook();
}
public Books queryBookByName(String name) {
return bookMapper.queryBookByName(name);
}
}
3. Spring层
配置Spring整合MyBatis，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
https://www.springframework.org/schema/context/spring-context.xsd">
<context:property-placeholder location="classpath:database.properties"/>
<bean name="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.zh.dao"/>
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.zh.service" />
<bean id="BookServiceImpl" class="com.zh.service.BookServiceImpl">
<property name="bookMapper" ref="bookMapper"/>
bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
bean>
beans>
注意在applicationContext.xml中建立关联，否则会报错
<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"/>
beans>
4. SpringMVC
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>DispatcherServletservlet-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>DispatcherServletservlet-name>
<url-pattern>/url-pattern>
servlet-mapping>
<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>
filter>
<filter-mapping>
<filter-name>encodingFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
<session-config>
<session-timeout>15session-timeout>
session-config>
web-app>
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
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<mvc:annotation-driven />
<mvc:default-servlet-handler/>
<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>
<context:component-scan base-package="com.zh.controller" />
beans>
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="spring-mvc.xml"/>
beans>
5. CRUD业务测试
1.BookController 类编写 ， 方法一：查询全部书籍
@Controller
@RequestMapping("/book")
public class BookController {
@Autowired
@Qualifier("BookServiceImpl")
private BookService bookService;
//查询全部书籍，并且返回到一个书籍展示页面
@RequestMapping("/allBook")
public String list(Model model) {
List<Books> list = bookService.queryAllBook();
model.addAttribute("list", list);
return "allBook";
}
}
2.首页
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<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="${pageContext.request.contextPath}/book/allBook">点击进入列表页a>
h3>
body>
html>
3.书籍列表页面
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>书籍列表title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>书籍列表 —— 显示所有书籍small>
h1>
div>
div>
div>
<div class="row">
<div class="col-md-4 column">
<a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增a>
div>
<div class="col-md-4 column">div>
<div class="col-md-4 column">
<form action="${pageContext.request.contextPath}/book/queryBook" method="post" style="float: right">
<input type="text" name="queryBookName" class="form-control" placeholder="输入查询书籍的名称">
<input type="submit" value="查询" class="btn btn-primary">
form>
div>
div>
<div class="row clearfix">
<div class="col-md-12 column">
<table class="table table-hover table-striped">
<thead>
<tr>
<th>书籍编号th>
<th>书籍名字th>
<th>书籍数量th>
<th>书籍详情th>
<th>操作th>
tr>
thead>
<tbody>
<c:forEach var="book" items="${list}">
<tr>
<th>${book.bookID}th>
<th>${book.bookName}th>
<th>${book.bookCounts}th>
<th>${book.detail}th>
<th><a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.getBookID()}">更改a> |
<a href="${pageContext.request.contextPath}/book/del?id=${book.getBookID()}">删除a>
th>
tr>
c:forEach>
tbody>
table>
div>
div>
div>
4.添加书籍
controller
//跳转到增加书籍页面
@RequestMapping("/toAddBook")
public String toAddPaper(){
return "addBook";
}
//添加书籍
@RequestMapping("/addBook")
public String addPaper(Books book){
System.out.println(book);
bookService.addBook(book);
//重定向到书籍列表页面
return "redirect:/book/allBook";
}
addBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ 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="${pageContext.request.contextPath}/book/addBook" method="post">
书籍名称：<input type="text" name="bookName"><br><br><br>
书籍数量：<input type="text" name="bookCounts"><br><br><br>
书籍详情：<input type="text" name="detail"><br><br><br>
<input type="submit" value="添加">
form>
div>
5.修改书籍
controller
//跳转到更新书籍页面
@RequestMapping("/toUpdateBook")
public String toUpdateBook(Model model, int id){
Books books = bookService.queryBookById(id);
System.out.println(books);
model.addAttribute("book",books);
return "updateBook";
}
//更新书籍
@RequestMapping("/updateBook")
public String updateBook(Model model,Books book){
System.out.println(book);
bookService.updateBook(book);
Books books = bookService.queryBookById(book.getBookID());
model.addAttribute("books",books);
return "redirect:/book/allBook";
}
updateBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改信息title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>修改信息small>
h1>
div>
div>
div>
<form action="${pageContext.request.contextPath}/book/updateBook" method="post">
<input type="hidden" name="bookID" value="${book.getBookID()}"/>
书籍名称：<input type="text" name="bookName" value="${book.getBookName()}"/>
书籍数量：<input type="text" name="bookCounts" value="${book.getBookCounts()}"/>
书籍详情：<input type="text" name="detail" value="${book.getDetail() }"/>
<input type="submit" value="提交"/>
form>
div>
6.删除书籍
controller
//删除书籍
@RequestMapping("/del")
public String deleteBook(int id){
bookService.deleteBookById(id);
return "redirect:/book/allBook";
}
7.模糊查询书籍
controller
//查询书籍
@RequestMapping("/queryBook")
public String queryBook(String queryBookName,Model model){
Books book = bookService.queryBookByName(queryBookName);
List<Books> list = new ArrayList<Books>();
list.add(book);
model.addAttribute("list", list);
return "allBook";
}
测试
主页面
新增
更改
删除
查询
