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【SSM】(一)SSM整合-增删改查书籍

时间：2021-02-24 12:59:25      阅读：0      评论：0      收藏：0      [点我收藏+]

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一、Mybatis层

  • 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‘);

  • pom.xml

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <!-- 数据库连接池：c3p0 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>
        <!-- Servlet Jsp Jstl-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </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>2.0.6</version>
        </dependency>

        <!-- spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.12.RELEASE</version>
        </dependency>
        <!-- Spring操作数据库，需要spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.2.12.RELEASE</version>
        </dependency>
        <!-- AspectJ Weaver -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.6</version>
        </dependency>

        <!--lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>


    <!--在build中配置resources，防止资源导出失败的问题-->
    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>

  • database.properties

    jdbc.driver=com.mysql.jdbc.Driver
# 如果使用的是MySQL 8.0+，需要增加时区的配置；&serverTimezone=Asia/Shanghai
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=root

  • mybatis-config.xml：别名、日志、配置xxxMapper（数据源在spring-dao.xml中配置）

    <?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>

    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
        <package name="com.musecho.pojo"/>
    </typeAliases>

    <mappers>
        <mapper class="com.musecho.dao.BookMapper"/>
    </mappers>
</configuration>

  • Books

    @Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {

    private int bookID;
    private String bookName;
    private int bookCounts;
    private String detail;
}

  • BookMapper

    public interface BookMapper {

    int addBook(Books books);

    int deleteBookById(@Param("bookId") int id);

    int updateBook(Books books);

    Books queryBookById(@Param("bookId")int id);

    List<Books> queryAllBooks();

}

  • BookMapper.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>

    <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" parameterType="int" resultType="books">
        select * from ssmbuild.books
        where bookID=#{bookId};
    </select>

    <select id="queryAllBooks" resultType="books">
        select * from ssmbuild.books;
    </select>

</mapper>

  • BookService

    public interface BookService {

    int addBook(Books books);

    int deleteBookById(int id);

    int updateBook(Books books);

    Books queryBookById(int id);

    List<Books> queryAllBooks();

}

  • BookServiceImpl

    public class BookServiceImpl implements BookService {

    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> queryAllBooks() {
        return bookMapper.queryAllBooks();
    }

}


二、Spring层

  • spring-dao.xml

    配置dao接口动态扫描包：将所有dao类注入到Spring容器，并注入sqlSessionFactory。

    就不用写xxxMapper接口的实现类(通过sqlSession获取mapper，返回操作结果)了。

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

    <!--1. 关联数据库配置文件-->
    <context:property-placeholder location="classpath:database.properties"/>

    <!--2.连接池
        dbcp：半自动化操作，不能自动连接
        c3p0：自动化操作（自动化加载配置文件，并且可以自动设置到对象中）
        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连接池的私有属性-->
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="10"/>
        <!-- 关闭连接后不自动commit-->
        <property name="autoCommitOnClose" value="false"/>
        <!-- 获取连接超过时间-->
        <property name="checkoutTimeout" value="10000"/>
        <!-- 当获取连接失败重试次数-->
        <property name="acquireRetryAttempts" value="2"/>
    </bean>

    <!-- 3.sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 绑定Mybatis的配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!-- 4.配置dao接口扫描包，动态的实现了Dao接口注入到Spring容器中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 注入 sqlSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!-- 要扫描的dao包-->
        <property name="basePackage" value="com.musecho.dao"/>
    </bean>

</beans>

  • spring-service.xml

    需要配置 aop事务支持：由于增删改操作都需要提交事务，所以要开启自动提交事务。并且SSM框架整合后，不需要我们手动调用mybatis代码得到SqlSession从而得到mapper对象了（都在spring配置文件配置了），所以无法执行sqlSessionFactory.openSession(true);。因此我们进行aop织入操作。

    <?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"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://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.扫描service下的包-->
    <context:component-scan base-package="com.musecho.service"/>

    <!-- 2.将我们的所有业务类，注入到Spring，可以通过配置或注解实现-->
    <bean id="BookServiceImpl" class="com.musecho.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>


    <!-- 3.声明式事务配置-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--注入到数据源-->
<!--        <property name="dataSource" ref="dataSource"/>-->
        <constructor-arg index="0" ref="dataSource" />
    </bean>

    <!-- 4.aop事务支持-->
    <!--配置事务通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <!--给所有方法配置事务-->
        <tx:attributes>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <!--配置事务切入-->
    <aop:config>
        <aop:pointcut id="txPointCut" expression="execution(* com.musecho.dao.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
    </aop:config>

</beans>

三、SpringMVC层

  • web.xml：DispatcherServlet，乱码过滤

    <?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>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>


    <!--乱码过滤-->
    <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>

  • 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
        https://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.注解驱动-->
    <mvc:annotation-driven/>
    <!--2.静态资源过滤-->
    <mvc:default-servlet-handler/>
    <!--3.扫描包：controller-->
    <context:component-scan base-package="com.musecho.controller" />

    <!--4.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>

  • applicationContext.xml整合

    <?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
        https://www.springframework.org/schema/beans/spring-beans.xsd">

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

</beans>

  • 报错404：有可能是IDEA的Project Structure里lib没配置

  • 报错500：xxxService的bean不存在

    org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘bookController‘: Unsatisfied dependency expressed through field ‘bookService‘; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type ‘com.musecho.service.BookService‘ available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true), @org.springframework.beans.factory.annotation.Qualifier(value=BookServiceImpl)}

    排错步骤：

    • 1.查看bean注入是否成功【ok】

    • 2.Junit单元测试，查看是否能够查询出结果【ok】

    • 3.上述两步没问题的话，问题就不在底层，在spring

    • 4.SpringMVC，整合时没调用到service层的bean

      • 1.applicationContext.xml没有注入bean【ok】

      • 2.web.xml中，绑定上下文配置的文件写错了。【问题在这】

        应该写applicationContext.xml

    技术图片



三、编写功能

1 查询所有书籍列表

  • 控制器BookController

    @Controller
@RequestMapping("/book")
public class BookController {

    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;

    //查询全部的书籍，并且返回一个书籍展示页面
    @RequestMapping("/allBooks2")
    public String queryAllBooks(Model model) {
        List<Books> list = bookService.queryAllBooks();
        model.addAttribute("list", list);

        return "allBooks";
    }
    
}

  • 首页index.jsp

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>

<head>
    <title>首页</title>
    <style type="text/css">
        a {
            text-decoration: none;
            color: black;
            font-size: 30px;
        }

        h2 {
            width: 400px;
            height: 55px;
            margin: 250px auto;
            text-align: center;
            line-height: 49px;
            background: deepskyblue;
            border-radius: 10px;
        }
    </style>

</head>
<body>
<h2>
    <a href="${pageContext.request.contextPath}/book/allBooks2">点击进入书籍列表页面</a>
</h2>

</body>

</html>

  • 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>书籍列表展示页面</title>

    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css"
          integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

</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">新增书籍</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="${requestScope.get(‘list‘)}">
                    <tr>
                        <td>${book.getBookID()}</td>
                        <td>${book.getBookName()}</td>
                        <td>${book.getBookCounts()}</td>
                        <td>${book.getDetail()}</td>
                        <td>
                            <a href="${pageContext.request.contextPath}/book/toUpdateBook/${book.getBookID()}">修改</a>
                            <a href="${pageContext.request.contextPath}/book/deleteBook/${book.getBookID()}">删除</a>
                        </td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>
</div>
</body>

</html>

2 新增书籍

  • BookController新增方法

    	//跳转到增加书籍的页面
    @RequestMapping("/toAddBook")
    public String toAddBook() {
        return "addBook";
    }

    //增加书籍
    @RequestMapping("/addBook2")
    public String addBook(Books book) {
        System.out.println(book);
        bookService.addBook(book);
        return "redirect:/book/allBooks2";
    }

  • 新增页面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>新增书籍页面</title>

    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css"
          integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

</head>

<style>
    form-group {
        margin-bottom: 50px;
    }
</style>
<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/addBook2" method="post" class="form-horizontal">
        <div class="form-group" style="margin-bottom: 30px;">
            <label for="bookName" class="control-label col-md-1">书籍名字</label>
            <div class="col-md-4">
                <input name="bookName" class="form-control" id="bookName" required>
            </div>
        </div>
        <div class="form-group" style="margin-bottom: 30px;">
            <label for="bookCount" class="control-label col-md-1">书籍数量</label>
            <div class="col-md-4">
                <input name="bookCounts" class="form-control" id="bookCount" required>
            </div>
        </div>
        <div class="form-group" style="margin-bottom: 30px;">
            <label for="bookDetail" class="control-label col-md-1">书籍详情</label>
            <div class="col-md-4">
                <input name="detail" class="form-control" id="bookDetail" required>
            </div>
        </div>
        <div class="form-group" style="margin-bottom: 30px;">
            <div class="col-md-offset-1 col-md-2">
                <button type="submit" class="btn btn-primary">提交</button>
            </div>
        </div>
    </form>


</div>
</body>

</html>

3 修改书籍

  • BookController修改方法

    	//跳转到增加书籍的页面
    @RequestMapping("/toAddBook")
    public String toAddBook() {
        return "addBook";
    }

    //增加书籍
    @RequestMapping("/addBook2")
    public String addBook(Books book) {
        System.out.println(book);
        bookService.addBook(book);
        return "redirect:/book/allBooks2";
    }

  • 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>新增书籍页面</title>

    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css"
          integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

</head>

<style>
    form-group {
        margin-bottom: 50px;
    }
</style>
<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/addBook2" method="post" class="form-horizontal">
        <div class="form-group" style="margin-bottom: 30px;">
            <label for="bookName" class="control-label col-md-1">书籍名字</label>
            <div class="col-md-4">
                <input name="bookName" class="form-control" id="bookName" required>
            </div>
        </div>
        <div class="form-group" style="margin-bottom: 30px;">
            <label for="bookCount" class="control-label col-md-1">书籍数量</label>
            <div class="col-md-4">
                <input name="bookCounts" class="form-control" id="bookCount" required>
            </div>
        </div>
        <div class="form-group" style="margin-bottom: 30px;">
            <label for="bookDetail" class="control-label col-md-1">书籍详情</label>
            <div class="col-md-4">
                <input name="detail" class="form-control" id="bookDetail" required>
            </div>
        </div>
        <div class="form-group" style="margin-bottom: 30px;">
            <div class="col-md-offset-1 col-md-2">
                <button type="submit" class="btn btn-primary">提交</button>
            </div>
        </div>
    </form>


</div>
</body>

</html>

4 删除书籍

  • BookController删除方法

    	//删除书籍
    @RequestMapping("/deleteBook/{bookID}")
    public String deleteBook(@PathVariable("bookID") int id) {
        bookService.deleteBookById(id);

        return "redirect:/book/allBooks2";
    }

5 模糊搜索书籍

  • BookMapper

    List<Books> queryBooksLikeName(@Param("name") String bookName);

  • BookService

  • BookServiceImpl

     public List<Books> queryBooksLikeName(String bookName) {
        String str ="%"+bookName+"%";
//        String str = bookName;
        System.err.println("bookName -->" + bookName);
        return bookMapper.queryBooksLikeName(str);
 }

  • BookController搜索方法

    	//根据书名，模糊搜索书籍
    @RequestMapping("/queryBooksLikeName")
    public String queryBooksLikeName(String bookName, Model model) {
        System.err.println("controller层bookName"+bookName);
        List<Books> list = bookService.queryBooksLikeName(bookName);
        model.addAttribute("list", list);

        return "allBooks";
    }

  • 修改allBooks.jsp

    	<div class="row">
        <div class="col-md-4 column">
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBooks2">显示全部书籍</a>
        </div>
        <div class="col-md-offset-4 col-md-4 column">
            <f	orm action="${pageContext.request.contextPath}/book/queryBooksLikeName"
                  method="post" class="form-inline">
                <div class="form-group">
                    <input name="bookName" class="form-control">
                    <button class="btn btn-primary" type="submit">搜索</button>
                </div>
            </form>
        </div>
    </div>

* 报错：

  • aop报错

    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘txPointCut‘: Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.aop.aspectj.AspectJExpressionPointcut] from ClassLoader [ParallelWebappClassLoader

    解决：

    不一定是aop相关的东西写错。中途加入的依赖，在project structure中要更新lib！

【SSM】(一)SSM整合-增删改查书籍

标签：点击   lse   oar   select   factor   编号   显示   localhost   eps   

原文地址：https://www.cnblogs.com/musecho/p/14436391.html
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