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SSM整合笔记

发布于2021-06-08 10:54     阅读(115)     评论(0)     点赞(18)     收藏(2)


1.前期准备

在学完MyBatis、Spring、SpringMVC后可以尝试整合SSM使其结构更加完整思路更加清晰,但整合过程中会有很多Bug,我讲整合的思路写了下来供大家参考

2.数据准备

我创建了一个名为SSM的数据库,在数据库中创建了一个book表,其中包括图书编号,图书名称,图书作者,图书价格等字段

CREATE TABLE `book` (
  `book_id` INT(11) NOT NULL AUTO_INCREMENT,
  `book_name` VARCHAR(20) DEFAULT NULL,
  `book_price` DOUBLE DEFAULT NULL,
  `book_author` VARCHAR(20) DEFAULT NULL,
  PRIMARY KEY (`book_id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
INSERT INTO `book`(book_name,book_price,book_author) VALUES ( 'Java编程思想', '68', 'zhangsan');
INSERT INTO `book`(book_name,book_price,book_author) VALUES ('网页设计', '46', 'lisi');
INSERT INTO `book`(book_name,book_price,book_author) VALUES ('数据库设计', '28', 'wangwu');
SELECT * FROM book

3.基本结构的搭建

3.1导入响应的依赖

  <dependencies>
        <!-- 测试类-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>

        <!--mysql -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.46</version>
        </dependency>

        <!-- mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>

        <!--springmvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.4.RELEASE</version>
        </dependency>

        <!--jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.2.4.RELEASE</version>
        </dependency>

        <!--AOP -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.6.8</version>
        </dependency>

        <!-- jsp-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
            <scope>provided</scope>
        </dependency>

        <!--servlet -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>

        <!--mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.4</version>
        </dependency>

        <!-- 打印日志-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

        <!--jstl -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>
    </dependencies>

3.2创建响应的实体类

3.2.1Book类

package com.blb.entity;

public class Book {
    private Integer bookId ;

    private String bookName  ;

    private Double bookPrice 	;

    private String bookAuthor  ;

    public Integer getBookId() {
        return bookId;
    }

    public void setBookId(Integer bookId) {
        this.bookId = bookId;
    }

    public String getBookName() {
        return bookName;
    }

    public void setBookName(String bookName) {
        this.bookName = bookName;
    }

    public Double getBookPrice() {
        return bookPrice;
    }

    public void setBookPrice(Double bookPrice) {
        this.bookPrice = bookPrice;
    }

    public String getBookAuthor() {
        return bookAuthor;
    }

    public void setBookAuthor(String bookAuthor) {
        this.bookAuthor = bookAuthor;
    }

    @Override
    public String toString() {
        return "Book{" +
                "bookId=" + bookId +
                ", bookName='" + bookName + '\'' +
                ", bookPrice=" + bookPrice +
                ", bookAuthor='" + bookAuthor + '\'' +
                '}';
    }

    public Book(Integer bookId, String bookName, Double bookPrice, String bookAuthor) {
        this.bookId = bookId;
        this.bookName = bookName;
        this.bookPrice = bookPrice;
        this.bookAuthor = bookAuthor;
    }

    public Book() {
    }
}

3.2.2创建Mapper接口

package com.blb.mapper;

import com.blb.entity.Book;

import java.util.List;

public interface BookMapper {
    public int addBook(Book book);

    public int updateBook(Book book);

    public int deleteBook(int bookId);

    public List<Book> selectBooks();

    public Book selectBookById(int bookId);
}

3.2.3创建Server层的接口及其实现类

接口

package com.blb.server;

import com.blb.entity.Book;

import java.util.List;

public interface BookServer {
    public int addBook(Book book);

    public int updateBook(Book book);

    public int deleteBook(int bookId);

    public List<Book> selectBooks();

    public Book selectBookById(int bookId);
}

实现类

package com.blb.server;

import com.blb.entity.Book;
import com.blb.mapper.BookMapper;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.List;
public class BookServerImpl implements BookServer{
    @Autowired
    private BookMapper bookMapper ;

    @Override
    public int addBook(Book book) {
        return bookMapper.addBook(book);
    }

    @Override
    public int updateBook(Book book) {
        return bookMapper.updateBook(book);
    }

    @Override
    public int deleteBook(int bookId) {
        return bookMapper.deleteBook(bookId);
    }

    @Override
    public List<Book> selectBooks() {
        return bookMapper.selectBooks();
    }

    @Override
    public Book selectBookById(int bookId) {
        return bookMapper.selectBookById(bookId);
    }
}

3.2.4Controller层

package com.blb.controller;
public class BookController {
}

3.2.5配置文件

jdbc.properties

jdbc.Driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=root

新建4个Spring的配置文件spring-controller.xml、spring-server.xml、spring-mapper.xml,application.xml
其中application.xml中

<?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="spring-server.xml"/>
    <import resource="spring-controller.xml"/>
    <import resource="spring-mapper.xml"/>
</beans>

4.Spring+Mybatis

4.1创建对应的mapper

在Resources 创建一个与BookMapper.java同级目录下面创建一个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.blb.mapper.BookMapper">

    <select id="selectBooks" resultType="book">
        select * from book
    </select>

    <insert id="addBook" parameterType="book" >
        insert into book(book_name,book_price,book_author) values (#{bookName},#{bookPrice},#{bookAuthor});
    </insert>

</mapper>

4.2创建MyBatis的配置文件MyBatis.xml

增加setting属性跟typeAliases标签

<?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">
<!-- 根标签 -->
<configuration>
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        <setting name="logImpl" value="LOG4J"/>
    </settings>

<!-- 取别名-->
    <typeAliases>
        <package name="com.blb.ssm.bean"/>
    </typeAliases>

</configuration>

4.3 Spring-mapper.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  http://www.springframework.org/schema/context/spring-context.xsd
">
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>'
   <!--  包扫描-->
    <context:component-scan base-package="com.blb.mapper"/>

    <!--配置数据源 -->
    <bean id="dataSource"  class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${jdbc.Driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
<!-- 创建Sqlsession-->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
           <!-- 绑定mybatis配置文件 -->
        <property name="configLocation" value="classpath:mybatis.xml"/>
    </bean>
<!-- 扫描映射器-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.blb.mapper"/>
    </bean>
</beans>

4.4spring-server.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" xmlns:tx="http://www.springframework.org/schema/tx"
       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">
       <!-- 包扫描-->
    <context:component-scan base-package="com.blb.server"></context:component-scan>
<!-- 声明式事务 -->
    <import resource="spring-mapper.xml"></import>
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--事务的注解驱动-->
    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
</beans>

4.5BookServerImpl.java

package com.blb.server;

import com.blb.entity.Book;
import com.blb.mapper.BookMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;


@Service("bookServer")
public class BookServerImpl implements BookServer{
    @Autowired
    private BookMapper bookMapper ;

    @Transactional//直接修饰在类上,表示所有方法都加上事务
    @Override
    public int addBook(Book book) {
        return bookMapper.addBook(book);
    }

    @Transactional
    @Override
    public int updateBook(Book book) {
        return bookMapper.updateBook(book);
    }

    @Transactional
    @Override
    public int deleteBook(int bookId) {
        return bookMapper.deleteBook(bookId);
    }

    @Override
    public List<Book> selectBooks() {
        return bookMapper.selectBooks();
    }

    @Override
    public Book selectBookById(int bookId) {
        return bookMapper.selectBookById(bookId);
    }
}

5.web+SpringMVC

5.1web.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">

<!--设置DispatcherServle-->
    <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:application.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>
    <!--字符过滤-->
    <filter>
        <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

5.2spring-controller.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"
       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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--自动扫描-->
    <context:component-scan base-package="com.blb.controller"></context:component-scan>

    <!--注解驱动-->
    <mvc:annotation-driven/>
    <!--静态资源过滤-->
    <mvc:default-servlet-handler/>

	<!-- 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>
</beans>

5.3BookController.java

package com.blb.controller;

import com.blb.entity.Book;
import com.blb.server.BookServer;
import org.springframework.beans.factory.annotation.Autowired;
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 {

    @Autowired
    private BookServer bookServer;

    @RequestMapping("/queryAllBook")
    public String quert(Model model)
    {
        List<Book> bookList = bookServer.selectBooks();
        model.addAttribute("bookList",bookList);
        return "hello";
    }
}

项目优化正在更新中



所属网站分类: 技术文章 > 博客

作者:java之恋

链接:http://www.javaheidong.com/blog/article/219292/4654aa93d4d52f242b8b/

来源:java黑洞网

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