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  • ssm框架的整合

    SSMBuild

    1. 基本环境搭建

    1. 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');
      
    2. 导入依赖(看常用配置文件)

    3. 资源文件导出问题(看常用配置文件)

    2. 编写Model层

    1. 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
      
    2. 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>
      
    3. 编写实体类

      public class Books {
          private int bookID;
          private String bookName;
          private int bookCounts;
          private  String detail;
      }
      
    4. 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();
      }
      
    5. 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>
      
    6. spring-dao.xml中注册sqlSessionTemplate

      <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
              <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"/>
      </bean>
      
    7. 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();
          }
      }
      
    8. 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

    1. 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();
      }
      
    2. 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();
          }
      }
      
    3. 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

    1. 添加web框架支持

    2. 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>
      
    3. 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>
      
    4. 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

    1. 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>
      
    2. 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

    1. 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>
      
    2. 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

    1. 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>
      
    2. 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

    1. BooksController

      @RequestMapping("/del/{bookID}")
      public String deleteBook(@PathVariable("bookID") int id){
          booksService.deleteBooksByID(id);
          return "redirect:/book/allBook";
      }
      
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  • 原文地址:https://www.cnblogs.com/iandf/p/13641570.html
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