SpringMVC- SSM framework integration

Environmental requirements

- IDEA
- MySQL
- Tomcat 9
- Maven 3.6

Required knowledge: MySQL database, Spring, Javaweb, Mybatis and some simple front-end knowledge;

The MySQL database

Create a database for your book data

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

DROP TABLE IF EXISTS `books`;

CREATE TABLE `books` (
`bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT 'book id'.`bookName` VARCHAR(100) NOT NULL COMMENT 'title'.`bookCounts` INT(11) NOT NULL COMMENT 'number'.`detail` VARCHAR(200) NOT NULL COMMENT 'description'.KEY `bookID` (`bookID`))ENGINE=INNODB DEFAULT CHARSET=utf8;

INSERT  INTO `books`(`bookID`.`bookName`.`bookCounts`.`detail`)VALUES
(1.'Java'.1.'From entry to abandonment'),
(2.'MySQL'.10.'From deleting libraries to running away'),
(3.'Linux'.5.'From the door to the prison.');
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Setting up the basic environment

Create a new Maven project (I built ssmBuild) and add support for the Web framework
Import the relevant POM dependencies

<! Dependencies: junit, database, database connection pool, servlet, JSP, mybatis, mybatis -- spring, spring-->
    <dependencies>
        <! --Junit-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <! -- Database driver -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <! -- Database connection pool -->
        <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>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.6</version>
        </dependency>
        <! --lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.16</version>
        </dependency>
    </dependencies>
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Maven resource filtering problem

<! Static resource export filtering problem -->
    <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>
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Create the appropriate frame package

con.lyw.pojo
com.lyw.dao
com.lyw.service
com.lyw.controller

resources

Create mybatis – config. XML


      
<! DOCTYPEconfiguration
       PUBLIC "- / / mybatis.org//DTD Config / 3.0 / EN"
       "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

</configuration>
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Create the applicationContext. Xml3


      
<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>
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Mybatis layer preparation

MySQL > create database configuration file database.properties(resources)

jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306? serverTimezone=GMT%2B8 jdbc.username=root jdbc.password=426457Copy the code

IDEA Associated database
Write the core configuration file of Mybatis


      
<! DOCTYPEconfiguration
        PUBLIC "- / / mybatis.org//DTD Config / 3.0 / EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <typeAliases>
        <package name="com.lyw.pojo"/>
    </typeAliases>
    <mappers>
        <mapper class="com.lyw.dao.BookMapper"/>
    </mappers>
</configuration>
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Writing entity classes

The Lombok plug-in is used

package com.lyw.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
    public int bookID;
    public String bookName;
    public int bookCounts;
    public String detail;
}
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Write the Mapper interface for the DAO layer

package com.lyw.dao;

import com.lyw.pojo.Books;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface BookMapper {

    // Add a book
    int addBook(Books books);
    // Delete a book
    int deleteBookById(@Param("bookID") int id);
    // Update a book
    int UpdateBook(Books books);
    // Query a book
    Books QueryBookById(@Param("bookID")int id);
    // Query all books
    List<Books> QueryAllBook(a);
	// query by title
    Books queryBookByName(@Param("bookName") String bookName);
}
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Write the mapper.xml file


      
<! DOCTYPEmapper
        PUBLIC "- / / mybatis.org//DTD Config / 3.0 / EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.lyw.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=#{bookName};
    </select>
</mapper>
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Write interfaces and implementation classes for the Service layer

Interface:

package com.lyw.service;

import com.lyw.pojo.Books;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface BookService {
    // Add a book
    int addBook(Books books);
    // Delete a book
    int deleteBookById(int id);
    // Update a book
    int UpdateBook(Books books);
    // Query a book
    Books QueryBookById(int id);
    // Query all books
    List<Books> QueryAllBook(a);
	// query by title
    Books queryBookByName(String bookName);
}
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Implementation class:

package com.lyw.service;

import com.lyw.dao.BookMapper;
import com.lyw.pojo.Books;

import java.util.List;

public class BookServiceImpl implements BookService{

    //Service invokes THE DAO layer: combines the DAO layer
    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 UpdateBook(Books books) {
        return bookMapper.UpdateBook(books);
    }

    public Books QueryBookById(int id) {
        return bookMapper.QueryBookById(id);
    }

    public List<Books> QueryAllBook(a) {
        return bookMapper.QueryAllBook();
    }

    public Books queryBookByName(String bookName) {
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Writing the Spring layer

Configure Spring to integrate Mybatis (I’m using c3P0 connection pool)
Write the Spring integration Mybatis configuration file: 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">

    <! --1. Associate database configuration file -->
    <context:property-placeholder location="classpath:database.properties"/>
    <! --2. Connection pool DBCP: semi-automated operation c3P0: automated operation (automatic loading of configuration files, and can be set to objects!) Druid: hikari -- >
    <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 connection pool private property -->
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="10"/>
        <! -->
        <property name="autoCommitOnClose" value="false"/>
        <! Get connection timeout time -->
        <property name="checkoutTimeout" value="10000"/>
        <! Retry times -->
        <property name="acquireRetryAttempts" value="2"/>
    </bean>
    <! --3.sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <! -- Bind mybatis config file -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <! The dao interface can be dynamically injected into the Spring container.
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <! - injection sqlSessionFactory -- -- >
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <! -- dao package to scan -->
        <property name="basePackage" value="com.lyw.dao"/>
    </bean>
</beans>
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Write the Spring integration service configuration file: spring-service.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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd">

    <! --1. Scan packets under service -->
    <context:component-scan base-package="com.lyw.service"/>

    <! 2. Inject all of our business classes into Spring, either through configuration or annotations -->
    <bean id="BookServiceImpl" class="com.lyw.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

    <! 3. Declarative transaction configuration -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <! Inject data source -->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <! Aop transaction support -->
    <! -- Configure transaction notification -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <! -- Config transaction entry -->
    <aop:config>
        <aop:pointcut id="txPointCut" expression="execution(* com.lyw.dao.*.*(..) )"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
    </aop:config>
</beans>
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SpringMVC layer writing

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">

    <! --DispatcherServlet-->
    <servlet>
        <servlet-name>DispatcherServlet</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>DispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <! -- Garbled filter -->
    <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-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>
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Configuration file for SpringMVC: spring-mVC.xml


      
<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/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

    <! --1. Register driver -->
    <mvc:annotation-driven/>
    <! --2. Static resource filtering -->
    <mvc:default-servlet-handler/>
    <! --3. Scan package: controller-->
    <context:component-scan base-package="com.lyw.controller"/>
    <! --4. View resolver -->
    <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>
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Integration of Spring 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">

    <import resource="classpath:spring-dao.xml"/>
    <import resource="classpath:spring-mvc.xml"/>
    <import resource="classpath:spring-service.xml"/>
</beans>
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Above is the basic framework and configuration file preparation content!! Need to memorize!!

Controller class and view layer writing

BookController– Query all books

@Controller
@RequestMapping("/book")
public class BookController {
    / / controller tuning service
    @Autowired
    @Qualifier("BookServiceImpl")
    BookService bookService;

    // Query all books and return to a book display interface
    @RequestMapping("/allBook")
    public String list(Model model){
        List<Books> booksList = bookService.QueryAllBook();
        model.addAttribute("list",booksList);
        return "allBook";
    }
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Write the home page: index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<! DOCTYPEHTML>
<html>
<head>
  <title>Home page</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">Click to go to the list page</a>
</h3>
</body>
</html>
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Book list: 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>List of books</title>
    <meta name="viewport" content="Width = device - width, initial - scale = 1.0">
    <! -- Add Bootstrap to beautify the interface
    <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>Book list - Displays all books</small>
                </h1>
            </div>
        </div>
    </div>

    <div class="row">
        <div class="col-md-4 column">
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">new</a>
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">All the books</a>
        </div>
        <div class="col-md-8 column"><%-- query book --%><form class="form-inline" action="${pageContext.request.contextPath}/book/queryBook" method="post" style="float: right">
                <span style="color: red; font-weight: bold">${err}</span>
                <input type="text" name="queryBookName" class="form-control" placeholder="Please enter the name of the book to be queried">
                <input type="submit" value="Query" 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>Book number</th>
                    <th>Book name</th>
                    <th>The number of books</th>
                    <th>The book details</th>
                    <th>operation</th>
                </tr>
                </thead>

                <tbody>
                <c:forEach var="book" items="${requestScope.get('list')}">
                    <tr>
                        <td>${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()}">To change the</a> |
                            <a href="${pageContext.request.contextPath}/book/del/${book.getBookID()}">delete</a>
                        </td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>
</div>
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BookController– Add books

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

    @RequestMapping("/addBook")
    public String addPaper(Books books) {
        System.out.println(books);
        bookService.addBook(books);
        return "redirect:/book/allBook";
    }
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Add a book interface: 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>The new books</title>
    <meta name="viewport" content="Width = device - width, initial - scale = 1.0">
    <! 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>The new books</small>
                </h1>
            </div>
        </div>
    </div>
    <form action="${pageContext.request.contextPath}/book/addBook" method="post">Book Title:<input type="text" name="bookName"><br><br><br>Number of books:<input type="text" name="bookCounts"><br><br><br>Book Details:<input type="text" name="detail"><br><br><br>
        <input type="submit" value="Add">
    </form>
</div>
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BookController– Modify books

    // Modify the book
    @RequestMapping("/toUpdateBook")
    public String toUpdateBook(Model model, int id) {
        Books books = bookService.QueryBookById(id);
        System.out.println(books);
        model.addAttribute("book",books );
        return "updateBook";
    }

    @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";
    }
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Modify the book interface: 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>Modify the information</title>
    <meta name="viewport" content="Width = device - width, initial - scale = 1.0">
    <! 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>Modify the information</small>
                </h1>
            </div>
        </div>
    </div>
    <form action="${pageContext.request.contextPath}/book/updateBook" method="post">
        <input type="hidden" name="bookID" value="${book.getBookID()}"/>Book Title:<input type="text" name="bookName" value="${book.getBookName()}"/>Number of books:<input type="text" name="bookCounts" value="${book.getBookCounts()}"/>Book Details:<input type="text" name="detail" value="${book.getDetail() }"/>
        <input type="submit" value="Submit"/>
    </form>
</div>
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8 BookController– Delete books

    // Delete books
    @RequestMapping("/del/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id) {
        bookService.deleteBookById(id);
        return "redirect:/book/allBook";
    }
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9 BookController– Query books by title

    // Query books
    @RequestMapping("/queryBook")
    public String queryBook(String queryBookName, Model model){
        Books books = bookService.queryBookByName(queryBookName);

        List<Books> booksList = new ArrayList<Books>();
        booksList.add(books);

        if (books==null) {
            booksList=bookService.QueryAllBook();
            model.addAttribute("err"."Not found.");
        }
        model.addAttribute("list",booksList);
        return "allBook";
    }
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Configure Tomcat to run tests!

This is the first time for SSM framework integration, need more practice to become proficient!

Come on!