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ssm整合歌手小项目

ssm整合歌手小项目

数据库设计

创建数据库存放歌手

CREATE DATABASE ssmbuild;
USE ssmbuild;DROP TABLE singer;CREATE TABLE singer(singer_id INT(10) NOT NULL AUTO_INCREMENT COMMENT '歌手ID',singer_name VARCHAR(32) NOT NULL COMMENT '歌手姓名',singer_sex VARCHAR(11) NOT NULL COMMENT '歌手性别',singer_age INT(10) NOT NULL COMMENT '歌手年龄',introduction VARCHAR(200) NOT NULL COMMENT '描述',PRIMARY KEY (singer_id))ENGINE=INNODB DEFAULT CHARSET=utf8;INSERT INTO singer(`singer_name`,`singer_sex`,`singer_age`,`introduction`) VALUES
('邓紫棋','女',30,'香港著名女歌手'),
('刘德华','男',45,'四大天王');

触发器

checksex：若输入不是男女则默认设置为男

DELIMITER $$CREATE/*[DEFINER = { user | CURRENT_USER }]*/TRIGGER `ssmbuild`.`checksex` BEFORE INSERTON `ssmbuild`.`singer`FOR EACH ROW BEGINIF(new.singer_sex<>'男' AND new.singer_sex<>'女')THEN SET new.singer_sex = '男';END IF;END$$DELIMITER ;

checkage:输入年龄小于80岁，否则报错

DELIMITER $$CREATE/*[DEFINER = { user | CURRENT_USER }]*/TRIGGER `ssmbuild`.`checkage` BEFORE INSERTON `ssmbuild`.`singer`FOR EACH ROW BEGINIF new.singer_age>80THENSIGNAL SQLSTATE '45001' SET MESSAGE_TEXT='年龄超出范围，必须小于80';END IF;END;$$DELIMITER ;

maven项目环境搭配

1.新建一Maven项目！ssmbuild ， 添加web的支持

2.导入相关的pom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>

3.Maven资源过滤设置

<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>

4.建立基本结构和配置框架

配置

• mybatis-config.xml

  <?xml version="1.0" encoding="UTF-8" ?>
  <!DOCTYPE configurationPUBLIC "-//mybatis//DTD Config 3.0//EN"".dtd">
  <configuration></configuration>
  

• applicationContext.xml

  <?xml version="1.0" encoding="UTF-8"?>
  <beans xmlns=""xmlns:xsi=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd"></beans>
  

基本包

• com.huayan.pojo
• com.huayan.dao
• com.huayan.service
• com.huayan.controller

Mybatis层

1.数据库配置文件 database.properties(连接数据库)

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=root

2.IDEA关联数据库

3.编写MyBatis的核心配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configurationPUBLIC "-//mybatis//DTD Config 3.0//EN"".dtd">
<configuration><typeAliases><package name="com.huayan.pojo"/></typeAliases><mappers><mapper resource="com.huayan.dao.SingerMapper.xml"/></mappers></configuration>

4.编写数据库对应的实体类 com.kuang.pojo.Books

package com.huayan.pojo;public class Singer {//歌手idprivate int singerId;//歌手姓名private String singerName;//歌手性别private String singerSex;//歌手年龄private int singerAge;//歌手简介private String introduction;//get//set//有参//无参}

5.编写Dao层的 Mapper接口！

package com.huayan.dao;import com.huayan.pojo.Singer;
import org.apache.ibatis.annotations.Param;
import java.util.List;public interface SingerMapper {//增加public int addSinger(Singer singer);//删除public int deleteSinger(@Param("singerId") int id);//根据id查找public Singer querySingerById(@Param("singerId") int id);//改public Singer updateSinger(Singer singer);//查找所有public List<Singer> queryAllSinger();
}

6.编写接口对应的 Mapper.xml 文件,导入MyBatis的包；

导入mabatis-config.xml

 <mappers><mapper resource="com.huayan.dao.SingerMapper.xml"/></mappers>

Mapper.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapperPUBLIC "-//mybatis//DTD Mapper 3.0//EN"".dtd">
<mapper namespace="com.huayan.dao.SingerMapper"><resultMap id="SingerMapper" type="Singer"><id column="singer_id" property="singerId"/><result column="singer_name" property="singerName"/><result column="singer_sex" property="singerSex"/><result column="singer_age" property="singerAge"/><result column="introduction" property="introduction"/></resultMap><sql id="Base_List">singer_id,singer_name,singer_sex,singer_age,introduction</sql><!--增加--><insert id="addSinger" parameterType="com.huayan.pojo.Singer">insert into singer<trim prefix="(" suffix=")" suffixOverrides=","><if test="singerId != null">singer_id,</if><if test="singerName != null">singer_name,</if><if test="singerSex != null">singer_sex,</if><if test="singerAge != null">singer_age,</if><if test="introduction != null">introduction,</if></trim><trim prefix="values (" suffix=")" suffixOverrides=","><if test="singerId != null">#{singerId},</if><if test="singerName != null">#{singerName},</if><if test="singerSex != null">#{singerSex},</if><if test="singerAge != null">#{singerAge},</if><if test="introduction != null">#{introduction},</if></trim></insert><!--删除--><delete id="deleteSinger" parameterType="java.lang.Integer">delete from singer where singer_id = #{singerId}</delete><!--修改--><update id="updateSinger" parameterType="com.huayan.pojo.Singer">update singer<set><if test="singerName != null">singer_name = #{singerName},</if><if test="singerSex != null">singer_sex = #{singerSex},</if><if test="singerAge != null">singer_age = #{singerAge},</if><if test="introduction != null">introduction = #{introduction},</if></set></update><!--查找所有--><select id="queryAllSinger" resultMap="SingerMapper">select <include refid="Base_List"/>from singer</select><!--根据id查找歌手--><select id="querySingerById" resultMap="SingerMapper">select <include refid="Base_List"/>from singerwhere singer_id = #{singerId}</select></mapper>

7.编写Service层的接口和实现类

接口

package com.huayan.service;import com.huayan.pojo.Singer;
import org.apache.ibatis.annotations.Param;import java.util.List;public interface SingerService {//增加public boolean addSinger(Singer singer);//删除public boolean deleteSinger(@Param("singerId") int id);//改public Singer updateSinger(Singer singer);//根据id查找public Singer querySingerById(@Param("singerId") int id);//查找所有public List<Singer> queryAllSinger();
}

实现类

package com.huayan.service.impl;import com.huayan.dao.SingerMapper;
import com.huayan.pojo.Singer;
import com.huayan.service.SingerService;import java.util.List;public class SingerServiceImpl implements SingerService {//调用dao层的操作，设置一个set接口，方便Spring管理private SingerMapper singerMapper;public void setSingerMapper(SingerMapper singerMapper) {this.singerMapper = singerMapper;}public boolean addSinger(Singer singer) {return singerMapper.addSinger(singer)>0;}public boolean deleteSinger(int id) {return singerMapper.deleteSinger(id)>0;}public Singer updateSinger(Singer singer) {return singerMapper.updateSinger(singer);}public Singer querySingerById(int id) {return singerMapper.querySingerById(id);}public List<Singer> queryAllSinger() {return singerMapper.queryAllSinger();}
}

Spring层

1.配置Spring整合MyBatis（）编写Spring整合Mybatis的相关的配置文件；spring-dao.xml

spring-dao.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=""xmlns:xsi=""xmlns:context=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd://www.springframework/schema/context/spring-context.xsd"><!-- 配置整合mybatis --><!-- 1.关联数据库文件 --><context:property-placeholder location="classpath:database.properties"/><!-- 2.数据库连接池 --><!--数据库连接池dbcp 半自动化操作 不能自动连接c3p0 自动化操作（自动的加载配置文件 并且设置到对象里面）--><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><!-- 配置连接池属性 --><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"/><!-- 获取连接超时时间 --><property name="checkoutTimeout" value="10000"/><!-- 当获取连接失败重试次数 --><property name="acquireRetryAttempts" value="2"/></bean><!-- 3.配置SqlSessionFactory对象 --><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><!-- 注入数据库连接池 --><property name="dataSource" ref="dataSource"/><!-- 配置MyBaties全局配置文件:mybatis-config.xml --><property name="configLocation" value="classpath:mybatis-config.xml"/></bean><!-- 4.配置扫描Dao接口包，动态实现Dao接口注入到spring容器中 --><!--解释 ：.html--><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><!-- 注入sqlSessionFactory --><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/><!-- 给出需要扫描Dao接口包 --><property name="basePackage" value="com.huayan.dao"/></bean></beans>

2.Spring整合service层

spring-service.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=""xmlns:xsi=""xmlns:context=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd://www.springframework/schema/context/spring-context.xsd"><!-- 扫描service相关的bean --><context:component-scan base-package="com.huayan.service" /><!--SingerServiceImpl注入到IOC容器中--><bean id="SingerServiceImpl" class="com.huayan.service.impl.SingerServiceImpl"><property name="singerMapper" ref="singerMapper"/></bean><!-- 配置事务管理器 --><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><!-- 注入数据库连接池 --><property name="dataSource" ref="dataSource" /></bean></beans>

SpringMVC层

1.web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns=""xmlns:xsi=""xsi:schemaLocation=" .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>

2.spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=""xmlns:xsi=""xmlns:context=""xmlns:mvc=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd://www.springframework/schema/context/spring-context.xsd://www.springframework/schema/mvc/spring-mvc.xsd"><!-- 配置SpringMVC --><!-- 1.开启SpringMVC注解驱动 --><mvc:annotation-driven /><!-- 2.静态资源默认servlet配置--><mvc:default-servlet-handler/><!-- 3.配置jsp 显示ViewResolver视图解析器 --><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><!-- 4.扫描web相关的bean --><context:component-scan base-package="com.huayan.controller" /></beans>

3.spring整合文件

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=""xmlns:xsi=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd"><import resource="classpath:spring-dao.xml"/><import resource="classpath:spring-service.xml"/><import resource="classpath:spring-mvc.xml"/></beans>

Controller 和 视图层编写

SingerController

1.查询歌手 controller

@Controller
@RequestMapping("/singer")
public class SingerController {@Autowired@Qualifier("SingerServiceImpl")private SingerService singerService;@RequestMapping("/allSinger")public String singers(Model model){List<Singer> singers = singerService.queryAllSinger();model.addAttribute("singers",singers);return "allSinger";}

2.首页 index.jsp

<%--Created by IntelliJ IDEA.User: 花言吖Date: 2021/1/31Time: 23:22To change this template use File | Settings | File Templates.
--%>
<%@ 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: 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}/singer/allSinger">点击进入</a></h3></body>
</html>

3.歌手列表页面 allSinger.jsp

<%@ taglib prefix="c" uri="" %>
<%--Created by IntelliJ IDEA.User: 花言吖Date: 2021/1/31Time: 23:22To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><!-- 新 Bootstrap 核心 CSS 文件 --><link href=".3.7/css/bootstrap.min.css" rel="stylesheet"><title>歌手页面</title></head>
<body><div class="container"><div class="row clearfix"><div class="col-md-12 column"><div class="page-header"><h1><small>歌手列表 —— 显示所有歌手</small></h1></div></div></div><div class="row"><div class="col-md-4 column"><a class="btn btn-primary" href="${pageContext.request.contextPath}/singer/toAddSinger">新增</a></div></div><div class="row clearfix"><div class="col-md-12 column"><table class="table table-hover table-striped"><thead><tr><th>歌手编号</th><th>歌手名字</th><th>歌手性别</th><th>歌手年龄</th><th>简介</th><th>操作</th></tr></thead><tbody><c:forEach var="singer" items="${singers}"><tr><td>${singer.singerId}</td><td>${singer.singerName}</td><td>${singer.singerSex}</td><td>${singer.singerAge}</td><td>${singer.introduction}</td><td><a href="${pageContext.request.contextPath}/singer/toUpdateSinger?id=${singer.singerId}">更改</a> |<a href="${pageContext.request.contextPath}/singer/deleteSinger/${singer.singerId}">删除</a></td></tr></c:forEach></tbody></table></div></div>
</div>
</body>
</html>

4.添加歌手 controller

 @RequestMapping("/toAddSinger")public String toAddSinger (){return "addSinger";}@RequestMapping("/addSinger")public String add(Singer singer){singerService.addSinger(singer);return "redirect:/singer/allSinger";}

5.添加歌手页面 addSinger.jsp

<%--Created by IntelliJ IDEA.User: 花言吖Date: 2021/2/1Time: 17:51To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><title>新增歌手</title><meta name="viewport" content="width=device-width, initial-scale=1.0"><!-- 引入 Bootstrap --><link href=".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>新增歌手</small></h1></div></div></div><form action="${pageContext.request.contextPath}/singer/addSinger" method="post">歌手名字：<input type="text" name="singerName" required><br><br><br>歌手性别：<input type="text" name="singerSex" required><br><br><br>歌手年龄：<input type="text" name="singerAge" required><br><br><br>歌手简介：<input type="text" name="introduction" required><br><br><br><input type="submit" value="添加"></form></div>
</body>
</html>

6.修改歌手 controller

@RequestMapping("/toUpdateSinger")public String toUpdateSinger(Model model,int id){Singer singer = singerService.querySingerById(id);model.addAttribute("Qsinger",singer);return "/updateSinger";}@RequestMapping("/updateSinger")public String updateSinger(Singer singer){singerService.updateSinger(singer);return "redirect:/singer/allSinger";}

7.修改歌手页面 updateSinger.jsp

<%@ taglib prefix="c" uri="" %>
<%@ 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=".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="${pageContext.request.contextPath}/singer/updateSinger" method="post"><input type="hidden" name="singerId" value="${Qsinger.singerId}"/>歌手姓名：<input type="text" name="singerName" value="${Qsinger.singerName}"/>歌手性别：<input type="text" name="singerSex" value="${Qsinger.singerSex}"/>歌手年龄：<input type="text" name="singerAge" value="${Qsinger.singerAge}"/>简介：<input type="text" name="introduction" value="${Qsinger.introduction}"/><input type="submit" value="修改"/></form></div>

8.删除歌手 controller

@RequestMapping("/deleteSinger/{singerId}")public String deleteSinger(@PathVariable("singerId") int id){singerService.deleteSinger(id);return "redirect:/singer/allSinger";}

9.搜索功能 controller

@RequestMapping("/querySinger")public String querySinger(String singerName,Model model){List<Singer> singers = singerService.queryByName("%" + singerName + "%");if(singers.isEmpty()){singers = singerService.queryAllSinger();model.addAttribute("error","未查到您所想要的歌手");}model.addAttribute("singers",singers);return "allSinger";}

搜索框 jsp

<%--搜索框--%><div class="col-md-8 column"><form method="post" class="form-inline" action="${pageContext.request.contextPath}/singer/querySinger" style="float: right;"><span style="color: red;font-weight: bold">${error}</span><input type="text" name="singerName" class="form-control" placeholder="请输入要查询的歌手姓名"><input type="submit" class="btn btn-primary" value="查询"></form></div>

本文标签： ssm整合歌手小项目