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  2. ssm整合

ssm整合

由 徘徊边缘 提交于 2020-02-19 17:50:52

默认其jdk为1.8配置

<build> 
    <plugins> 
        <plugin> 
            <groupId>org.apache.maven.plugins</groupId> 
            <artifactId>maven-compiler-plugin</artifactId> 
            <version>3.1</version> 
            <configuration> 
                <source>1.8</source> 
                <target>1.8</target> 
            </configuration> 
        </plugin> 
    </plugins> 
</build>

SSM整合

在Mybatis中有配置一段包扫描，我们继承supportDao层的时间。

<!-- 配置扫描Dao接口的包，动态实现Dao接口，注入到Spring容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <!--这里是今天要说的重点-->
    <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    <!-- 给出需要扫描的Dao接口包 -->
    <property name="basePackage" value="org.zhu.dao"></property>
</bean>
  1. 环境pom.xml依赖：
<dependencies>
    <!--Junit-->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
    </dependency>
    <!--数据库驱动-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.47</version>
    </dependency>
    <!-- 数据库连接池 -->
    <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>
</dependencies>

  1. MAVEN的资源过滤

    <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>

  2. BookMapper接口:(把Book全部不小心写成了User)

    public interface UserMapper {
    //查询所有书籍
    List<Books> queryAllBook();

    //查询单个书籍
    Books queryBookById(@Param("bookID") int id);

    //添加一本书
    int addBook(Books books);

    //修改一本书
    int updateBook(Books books);

    //删除一本书
    int deleteBook(@Param("bookID")int id);
}

  3. 对应的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.zhu.dao.UserMapper">

    <select id="queryAllBook" resultType="Books">
        select * from ssmbuild.books
    </select>


    <select id="queryBookById" resultType="books">
        select * from ssmbuild.books where bookID=#{bookID}
    </select>

    <insert id="addBook" parameterType="books">
        insert into ssmbuild.books (bookName, bookCounts, detail) VALUES (
        #{bookName},#{bookCounts},#{detail}
        )
    </insert>


    <update id="updateBook" parameterType="books">
        update ssmbuild.books set bookName=#{bookName},bookCounts=#{bookCounts},
        detail=#{detail} where bookID=#{bookID}
    </update>

    <delete id="deleteBook" parameterType="int">
        delete from ssmbuild.books where bookID=#{bookID}
    </delete>
</mapper>

  4. mybatis-config.xml的核心配置

    <?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.zhu.pojo"/>
    </typeAliases>


    <mappers>
        <mapper class="com.zhu.dao.UserMapper"/>
    </mappers>

</configuration>

  5. spring-dao.xml的配置：

    1. 配置数据源（dataSource）
    2. sqlSessionFactory
    3. MapperScannerConfigurer : 省略创造一个类继承supportDao层的步骤
    <?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">



    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/ssmbuild?serverTimezone=UTC&amp;useUnicode=true&amp;characterEncoding=UTF-8&amp;useSSL=false"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </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.zhu.dao"/>
    </bean>

</beans>

  6. service接口

    public interface UserService {
    List<Books> queryAllBook();

    //查询单个书籍
    Books queryBookById( int id);

    //添加一本书
    int addBook(Books books);

    //修改一本书
    int updateBook(Books books);

    //删除一本书
    int deleteBook(int id);

}

    实现类：利用 set或者 构造器，注入属性 UserMapper

    public class UserServiceImpl implements UserService {

    private UserMapper userMapper;

//    public UserServiceImpl(UserMapper userMapper) {
//        this.userMapper = userMapper;
//    }
public void setUserMapper(UserMapper userMapper) {
    this.userMapper = userMapper;
}
    

    public List<Books> queryAllBook() {
        return userMapper.queryAllBook();
    }

    public Books queryBookById(int id) {
        return userMapper.queryBookById(id);
    }

    public int addBook(Books books) {
        return userMapper.addBook(books);
    }

    public int updateBook(Books books) {
        return userMapper.updateBook(books);
    }

    public int deleteBook(int id) {
        return userMapper.deleteBook(id);
    }


}

  7. service层的spring配置 sping-service：

    <?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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           https://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/aop
                           https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

    <import resource="classpath:spring-dao.xml"/>

    <context:component-scan base-package="com.zhu.service"/>

    <bean id="userServiceImpl" class="com.zhu.service.UserServiceImpl">
<!--        <constructor-arg index="0" ref="userMapper"/>-->

        <property name="userMapper" ref="userMapper"/>
    </bean>


    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
</beans>

  8. web.xml

    1. 核心：DispatcherServlet(前端控制器)，所有请求先经过这，通过映射器，适配器找到对应的servlet

    2. sping自带的监听过滤器，防止jsp页面乱码

      <?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">


    <servlet>
        <servlet-name>spingmvc</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>spingmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    <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-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

  9. sping-mvc配置：

    1. 扫描对应包
    2. 静态资源过滤<mvc:default-servlet-handler/>
    3. 增加注解驱动<mvc:annotation-driven/>
    <?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
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        https://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <context:component-scan base-package="com.zhu.controller"/>
    <mvc:annotation-driven/>
    <mvc:default-servlet-handler/>

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

  10. application将其整合在一起

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

    <import resource="classpath:spring-dao.xml"/>
    <import resource="classpath:spring-mvc.xml"/>
    <import resource="classpath:spring-service.xml"/>

</beans>

  11. controller

    @Controller
@RequestMapping("/book")
public class BooksController {
    @Autowired
    private UserServiceImpl userService;

    @RequestMapping("/list")
    public String list(Model model){
        List<Books> list = userService.queryAllBook();
        model.addAttribute("list",list);
        return "allBook";
    }

    @RequestMapping("/addBook")
    public String addBook(Model model){
        return "addBook";
    }

    @RequestMapping("/addBooks")
    public String addBooks(Books books){
        userService.addBook(books);
        return "redirect:/book/list";
    }

    @RequestMapping("/updata/{id}")
    public String updataBook(@PathVariable("id") int id,Model model){
        Books books = userService.queryBookById(id);
        model.addAttribute("books",books);
        return "updata";
    }

    @RequestMapping("/updataSeccessed")
    public String updataBooks(Books books){
        userService.updateBook(books);
        return "redirect:/book/list";
    }


    @RequestMapping("/delete/{id}")
    public String deleteBook(@PathVariable("id") int id){
        userService.deleteBook(id);
        return "redirect:/book/list";
    }
}

  12. tomcat首页

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>书籍首页</title>
    <style>
      a{
        text-decoration: none;
        color: black;
        background-color: deepskyblue;
        border-radius: 5px;
      }
      div{
        margin: auto;
        text-align: center;
      }
    </style>
  </head>
  <body>
  <div>
    <a href="${pageContext.request.contextPath}/book/list">点击进入书籍列表</a>
  </div>
  </body>
</html>

  13. 显示书籍 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>书籍列表</title>
    <style>
        h1 {
            color: black;
            background-color: deepskyblue;
            border-radius: 5px;
        }
        table{
            text-align: center;
            border: deepskyblue 1px solid;
            width: 500px;
            line-height: 30px;
        }
    </style>
</head>
<body>
    <h1>书籍列表</h1>
    <form action="${pageContext.request.contextPath}/book/addBook" method="post">
        <input type="submit" value="新增书籍">
    </form>
    <hr>

    <table>
        <thead>
            <tr>
                <th>书籍名称</th>
                <th>书籍数量</th>
                <th>书籍描述</th>
                <th>操作</th>
            </tr>
        </thead>
        <tbody>
            <c:forEach var="books" items="${requestScope.get('list')}">
                <tr>
                    <td>${books.bookName}</td>
                    <td>${books.bookCounts}</td>
                    <td>${books.detail}</td>
                    <td>
                        <a href="${pageContext.request.contextPath}/book/updata/${books.bookID}">更改</a>
                        <a href="${pageContext.request.contextPath}/book/delete/${books.bookID}">删除</a>
                    </td>
                </tr>
            </c:forEach>
        </tbody>
    </table>
</body>
</html>

  14. 添加书籍 addBook.jsp

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <form action="${pageContext.request.contextPath}/book/addBooks" method="post">

        书籍名称<input type="text" name="bookName" required><br><br><br>
        书籍数量<input type="text" name="bookCounts" required><br><br><br>
        书籍描述<input type="text" name="detail" required><br><br><br>
        <input type="submit" value="确认添加">
    </form>

</body>
</html>

  15. 更新书籍 updata.jsp

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<form action="${pageContext.request.contextPath}/book/updataSeccessed" method="post">
    <input type="hidden" name="bookID" value="${books.bookID}">
    书籍名称<input type="text" name="bookName" value="${books.bookName}" required><br><br><br>
    书籍数量<input type="text" name="bookCounts" value="${books.bookCounts}" required><br><br><br>
    书籍描述<input type="text" name="detail" value="${books.detail}" required><br><br><br>
    <input type="submit" value="确认修改">
</form>
</body>
</html>
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