zoukankan html css js c++ java

ssm框架的整合

SSMBuild

1. 基本环境搭建

编写数据库

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');

导入依赖(看常用配置文件)
资源文件导出问题(看常用配置文件)

2. 编写Model层

编写db.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

mybatis-config.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>
    <typeAliases>
        <package name="com.iandf.pojo"/>
    </typeAliases>

    <mappers>
        <mapper class="com.iandf.dao.BooksMapper"/>
    </mappers>
</configuration>

编写实体类

public class Books {
    private int bookID;
    private String bookName;
    private int bookCounts;
    private  String detail;
}

编写Mapper接口

public interface BooksMapper {
    //添加一本书
    int addBooks(Books books);
    //删除一本书
    int deleteBooksByID(@Param("bookID") int id);
    //更新一本书
    int updateBooks(Books books);
    //查询一本书
    Books queryBooksByID(@Param("bookID") int id);
    //查询所有书
    List<Books> getBooksList();
}

编写mapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.iandf.dao.BooksMapper">
    <insert id="addBooks" parameterType="books">
        insert into ssmbuild.books(bookID, bookName, bookCounts, detail)
        VALUES (#{bookID},#{bookName},#{bookCounts},#{detail})
    </insert>
    <delete id="deleteBooksByID" parameterType="_int">
        delete from ssmbuild.books where bookID = #{bookID};
    </delete>
    <update id="updateBooks" parameterType="books">
        update ssmbuild.books
        set bookCounts = #{bookCounts},bookName = #{bookName},bookCounts = #{bookName}
        where bookID = #{bookID}
    </update>
    <select id="queryBooksByID" parameterType="_int" resultType="books">
        select * from ssmbuild.books where bookID = #{bookID}
    </select>
    <select id="getBooksList" resultType="books">
        select * from ssmbuild.books
    </select>
</mapper>

spring-dao.xml中注册sqlSessionTemplate

<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"/>
</bean>

使用SqlSessionDaoSupport编写BooksMapper的实现类

public class BooksMapperImpl extends SqlSessionDaoSupport implements BooksMapper{
    public BooksMapperImpl() {

    }

    @Override
    public int addBooks(Books books) {
        return getSqlSession().getMapper(BooksMapper.class).addBooks(books);
    }

    @Override
    public int deleteBooksByID(int id) {
        return getSqlSession().getMapper(BooksMapper.class).deleteBooksByID(id);
    }

    @Override
    public int updateBooks(Books books) {
        return getSqlSession().getMapper(BooksMapper.class).updateBooks(books);
    }

    @Override
    public Books queryBooksByID(int id) {
        return getSqlSession().getMapper(BooksMapper.class).queryBooksByID(id);
    }

    @Override
    public List<Books> getBooksList() {
        return getSqlSession().getMapper(BooksMapper.class).getBooksList();
    }
}

在spring-dao.xml中注册BooksMapperImpl

<bean id="booksMapperImpl" class="com.iandf.dao.BooksMapperImpl">
        <property name="sqlSessionTemplate" ref="sqlSessionTemplate"/>
</bean>

3. 编写service层

编写service层接口

public interface BooksService {
    //添加一本书
    int addBooks(Books books);
    //删除一本书
    int deleteBooksByID( int id);
    //更新一本书
    int updateBooks(Books books);
    //查询一本书
    Books queryBooksByID(int id);
    //查询所有书
    List<Books> getBooksList();
}

编写service接口的实现类持有dao层的对象

public class BooksServiceImpl implements BooksService {
    private final BooksMapper booksMapper;

    public BooksServiceImpl(BooksMapper booksMapper) {
        this.booksMapper = booksMapper;
    }

    @Override
    public int addBooks(Books books) {
        return booksMapper.addBooks(books);
    }

    @Override
    public int deleteBooksByID(int id) {
        return booksMapper.deleteBooksByID(id);
    }

    @Override
    public int updateBooks(Books books) {
        return booksMapper.updateBooks(books);
    }

    @Override
    public Books queryBooksByID(int id) {
        return booksMapper.queryBooksByID(id);
    }

    @Override
    public List<Books> getBooksList() {
        return booksMapper.getBooksList();
    }
}

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: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:component-scan base-package="com.iandf.service"/>
    
    <bean class="com.iandf.service.BooksServiceImpl" id="booksService">
        <constructor-arg name="booksMapper" ref="booksMapperImpl"/>
    </bean>

    
</beans>

4. 整合spring-mvc

添加web框架支持

编写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>DispatcherServlet</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，之前被这里坑了！-->
            <param-value>classpath:applicationContext.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    <!--encodingFilter-->
    <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>
    
    <!--Session过期时间-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

编写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:mvc="http://www.springframework.org/schema/mvc"
       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.开启注解驱动支持-->
    <mvc:annotation-driven/>
    <!--2.不过滤静态资源访问-->
    <mvc:default-servlet-handler/>
    <!--3.配置视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
    <!-- 4.扫描web相关的bean -->
    <context:component-scan base-package="com.iandf.controller" />
</beans>

把spring-dao.xml spring_service.xml spring_mvc.xml整合到applicationContext.xml中

<import resource="spring-dao.xml"/>
<import resource="spring_service.xml"/>
<import resource="spring_mvc.xml"/>

配置文件到此结束

5. 实现书籍的增删改查

5.1 展示所有书籍

allBooks.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>书籍列表</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- 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 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="${requestScope.get('booksList')}">
                    <tr>
                        <td>${book.getBookID()}</td>
                        <td>${book.getBookName()}</td>
                        <td>${book.getBookCounts()}</td>
                        <td>${book.getDetail()}</td>
                        <td>
                            <a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.getBookID()}">更改</a> |
                            <a href="${pageContext.request.contextPath}/book/del/${book.getBookID()}">删除</a>
                        </td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>
</div>

BooksController

@RequestMapping("/allBook")
public String getBooksList(Model model){
    List<Books> booksList = booksService.getBooksList();
    model.addAttribute("booksList",booksList);
    return "allBooks";
}

5.2 添加书籍

allBooks.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">
    <!-- 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>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>

BooksController

@RequestMapping("/toAddBook")
public String toAddPaper() {
    return "addBook";
}

@RequestMapping("/addBook")
public String addPaper(Books books) {
    System.out.println(books);
    booksService.addBooks(books);
    return "redirect:/book/allBook";
}

5.3 修改书籍

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">
    <!-- 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>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>

BooksController

@RequestMapping("/toUpdateBook")
public String roUpdateBook(Model model,int id){
    Books books = booksService.queryBooksByID(id);
    model.addAttribute("book",books);
    return "updateBook";
}

@RequestMapping("/updateBook")
public String updateBook(Books book){
    booksService.updateBooks(book);
    return "redirect:/book/allBook";
}

5.4 删除书籍

BooksController

@RequestMapping("/del/{bookID}")
public String deleteBook(@PathVariable("bookID") int id){
    booksService.deleteBooksByID(id);
    return "redirect:/book/allBook";
}

查看全文

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原文地址：https://www.cnblogs.com/iandf/p/13641570.html