整合SSM
基本环境搭建
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>8.0.18</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> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.16.10</version> </dependency> </dependencies>
Maven资源过滤设置
<!--静态资源导出问题 --> <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>
建立基本结构和配置框架！
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com.kuang.pojo
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com.kuang.dao
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com.kuang.service
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com.kuang.controller
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mybatis-config.xml
<?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> </configuration>
applicationContext.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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> </beans>
Mybatis层编写
数据库配置文件 database.properties
我用的是8.0的mysql数据库连接版本，加cj同时要加上时区设置
jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/ssmbook?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT jdbc.username=root jdbc.password=fengge666
编写MyBatis的核心配置文件
<?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.xlf.pojo"/> </typeAliases> <mappers> <mapper /> </mappers> </configuration>
编写数据库对应的实体类
使用lombok插件！
package com.xlf.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
private int bookID;
private String bookName;
private int bookCounts;
private String details;
}
编写Dao层的 Mapper接口！
package com.xlf.dao;
import com.xlf.pojo.Books;
import org.apache.ibatis.annotations.Param;
import org.junit.runners.Parameterized;
import java.util.List;
public interface BookMapper {
//增加一本书
int addBook(Books books);
//删除一本书
int deleteBookById(@Param("bookId") int id);
//更新一本书
int updateBook(Books books);
//查询一本书
Books queryBookById(int id);
//查询全部的书
List<Books> queryAllBook();
//模糊搜索
List<Books> queryBookByName(String bookName);
}
编写接口对应的 Mapper.xml 文件
<?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.xlf.dao.BookMapper">
<insert id="addBook" parameterType="Books">
insert into books (bookName,bookCounts,details) value (#{bookName},#{bookCounts},#{details});
</insert>
<delete id="deleteBookById" parameterType="int">
delete from books where bookID=#{bookId};
</delete>
<update id="updateBook" parameterType="Books">
update books set bookName=#{bookName},bookCounts=#{bookCounts},details=#{details} where bookID=#{bookID};
</update>
<select id="queryBookById" parameterType="int" resultType="Books">
select * from books where bookID=#{id};
</select>
<select id="queryAllBook" resultType="Books">
select * from books;
</select>
<select id="queryBookByName" resultType="Books">
select * from books where bookName like concat('%','${bookName}','%');
</select>
</mapper>
编写Service层的接口和实现类
接口：
package com.xlf.service;
import com.xlf.pojo.Books;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface BookService {
//增加一本书
int addBook(Books books);
//删除一本书
int deleteBookById(int id);
//更新一本书
int updateBook(Books books);
//查询一本书
Books queryBookById(int id);
//查询全部的书
List<Books> queryAllBook();
//模糊搜索
List<Books> queryBookByName(String bookName);
}
实现类：
package com.xlf.service;
import com.xlf.dao.BookMapper;
import com.xlf.pojo.Books;
import java.util.List;
public class BookServiceImpl implements BookService {
//service调dao层：组合Dao
private BookMapper bookMapper;
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
public int addBook(Books books) {
return bookMapper.addBook(books);
}
public int deleteBookById(int id) {
return bookMapper.deleteBookById(id);
}
public int updateBook(Books books) {
return bookMapper.updateBook(books);
}
public Books queryBookById(int id) {
return bookMapper.queryBookById(id);
}
public List<Books> queryAllBook() {
return bookMapper.queryAllBook();
}
public List<Books> queryBookByName(String bookName) {
return bookMapper.queryBookByName(bookName);
}
}
Spring层编写
配置 Spring整合MyBatis ，我们这里数据源使用c3p0连接池；
我们去编写Spring整合Mybatis的相关的配置文件；spring-dao.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!--关联数据库配置操作 -->
<context:property-placeholder location="classpath:database.properties" />
<!--2.连接池 -->
<!--数据库连接池
dbcp 半自动化操作 不能自动连接
c3p0 自动化操作（自动的加载配置文件 并且设置到对象里面）
-->
<bean id="dataSource">
<property name="driverClass" value="${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.sqlSessionFactory -->
<bean id="sqlSessionFactory">
<property name="dataSource" ref="dataSource" />
<!--绑定Mybatis的配置文件 -->
<property name="configLocation" value="classpath:mybatis-config.xml" />
</bean>
<!--配置dao的接口扫描包，动态实现Dao接口可以注入到Spring容器中 -->
<bean>
<!-- 注入sqlSessionFactory-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
<!--要扫描的dao包 -->
<property name="basePackage" value="com.xlf.dao" />
</bean>
</beans>
Spring整合service层
spring-service.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 https://www.springframework.org/schema/context/spring-context.xsd"> <!-- 扫描service下的包--> <context:component-scan base-package="com.xlf.service" /> <!-- 将我们所有的业务类，注入到Spring，可以通过配置或注解实现--> <bean id="BookServiceImpl"> <property name="bookMapper" ref="bookMapper" /> </bean> <!--声明式事务配置 --> <bean id="transactionManager"> <property name="dataSource" ref="dataSource" /> </bean> </beans>
SpringMVC层
web.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"> <!-- DispatcherServlet--> <servlet> <servlet-name>springmvc</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>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 http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://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.xlf.controller" /> <!--4.视图解析器 --> <bean> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
Spring配置整合文件，applicationContext.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" 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>
配置文件，暂时结束！
Controller 和 视图层编写
BookController 类编写
package com.xlf.controller;
import com.xlf.pojo.Books;
import com.xlf.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@Controller
@RequestMapping("/book")
public class BookController {
@Autowired
@Qualifier("BookServiceImpl")
private BookService bookService;
//查询全部的书籍，返回到一个书籍展示页面
@RequestMapping("/allBook")
public String list(Model model)
{
List<Books> list=bookService.queryAllBook();
model.addAttribute("list",list);
return "allBook";
}
//跳转到增加书籍页面
@RequestMapping("/toAddBook")
public String toAddPaper()
{
return "addBook";
}
@RequestMapping("/addBook")
public String addBook(Books books)
{
System.out.println("addBook=>"+books);
bookService.addBook(books);
return "redirect:/book/allBook";
}
@RequestMapping("/toUpdate")
public String toUpdatePaper(int id,Model model)
{
Books books=bookService.queryBookById(id);
model.addAttribute("QBook",books);
return "updateBook";
}
@RequestMapping("/updateBook")
public String updateBook(Books books)
{
System.out.println("updateBook->"+books);
bookService.updateBook(books);
return "redirect:/book/allBook";
}
@RequestMapping("/deleteBook/{bookId}")
public String deleteBook(@PathVariable("bookId") int id)
{
bookService.deleteBookById(id);
return "redirect:/book/allBook";
}
@RequestMapping("/queryBook")
public String queryBook(String queryBookName,Model model)
{
List<Books> list = bookService.queryBookByName(queryBookName);
if (list.size()==0)
{
list=bookService.queryAllBook();
model.addAttribute("error","未找到");
}
model.addAttribute("list",list);
return "allBook";
}
}
前台页面就不在展示了，过于简谱，重点在于理解ssm框架的整合流程
运行展示
展示结果
运行结果如下所示：
项目的结构图
总结
学习之后，狂神的配置流程很清晰，期间也出现过错误，有错才能进步，才知道这个报错的原因是啥？学到很多知识。日后还要继续学习ssm框架，打算学完后，将自己之前的项目用SSM框架整一遍。
熟练的应用这套框架，我个人还是喜欢用html页面来做，之后要尝试把jsp全部换成html来开发。
过几天，就要考毛概了，该开始准备预习了。。。。
