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学习完MyBatis,Spring,SpringMVC之后,我们需要做的就是将这三者联系起来,Spring实现业务对象管理,Spring MVC负责请求的转发和视图管理, MyBatis作为数据对象持久化引擎。这样搭配的优点是:轻量、自由度高、Spring与Spring MVC契合度更好。通过一个图书管理示例完成SSM框架的集成。
1.我们打开idea选择create new project,然后选择Maven项目,我们暂时先不要选择maven骨架,等我们的视图层(WEB-UI层)的时候再选择maven骨架
2.这一步输入组织名,模块名称
Groupld: 「 组织名 」
artifactId: 「 模块名称 」
version: 「 版本号 」
在Maven世界中,每个工程都有它唯一的 组织名、模块名、版本 ,这三个就是maven项目的坐标。一个maven工程可以打包成jar、war、pom等形式,但是它们都是拥有上述三个坐标的。我们在项目过程中导入的jar包就是通过上述坐标值唯一确定的。因此,我们在创建一个maven工程时会要求指定具体的 组织名、模块名、版本、打包方式。
1.创建子模块common层,然后点击next
由于之前的步骤都是一致,这里就不重复上述步骤了,直接完成最后一步
实体层和mmon层一样都是同样的操作步骤,这里我们就不进行截图了,操作步骤都一样
1.子模块web-ui层需要讲一下,因为我们这一层是视图层,所以我们需要选择maven骨架。
2.然后点击next,输入模块名之后finish就可以了,在这里我们需要选择自己本地的中央仓库。自此我们的多模块项目已经搭建好了
3.完整的项目结构如下:
4.在这里我们发现视图层多了webapp这个文件夹,以后的开发过程中我们的视图都是放在WEB_INF目录下的
common模块:通用模块,不依赖其它任何模块,主要有utils、可以在多个不同项目中使用
entitie模块:POJO、VO、DTO
dao模块:数据持久化,访问数据库,这里使用Mybatis
service模块:业务模块,处理业务逻辑
webui模块:B/S结构的表示层,主要用于在浏览器中显示数据,提供用户接口
1.接下来我们去父模块的pom.xml文件进行统一的模块管理,为了方便管理版本和后续添加依赖不那么繁琐,我们在父模块pom.xml文件中只对依赖进行统一管理起来,而不进行依赖,当我们需要哪一个依赖的时候,我们只需要引入即可。
父模块pom.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.ssm.booksystem</groupId>
<artifactId>BookSystem</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>Book-Common</module>
<module>Book-Dao</module>
<module>Book-Service</module>
<module>Book-WEBUI</module>
<module>Book-Entity</module>
</modules>
<properties>
<!--模块内部依赖-->
<Book-Common.version>1.0-SNAPSHOT</Book-Common.version>
<Book-Dao.version>1.0-SNAPSHOT</Book-Dao.version>
<Book-Service.version>1.0-SNAPSHOT</Book-Service.version>
<Book-Entity.version>1.0-SNAPSHOT</Book-Entity.version>
<Book-WEBUI.version>1.0-SNAPSHOT</Book-WEBUI.version>
<!--Common模块管理-->
<jackson.version>2.7.4</jackson.version>
<commons-lang3.version>3.4</commons-lang3.version>
<!--通用部分-->
<log4j.version>2.6.1</log4j.version>
<junit.version>4.12</junit.version>
<spring-test.version>4.3.18.RELEASE</spring-test.version>
<!--Spring-->
<spring.version>4.3.0.RELEASE</spring.version>
<aspectjweaver.version>1.8.9</aspectjweaver.version>
<cglib.version>3.2.4</cglib.version>
<!--mybatis-->
<mybatis-spring.version>1.3.0</mybatis-spring.version>
<mysql-connector-java.version>5.1.38</mysql-connector-java.version>
<mybatis.version>3.4.1</mybatis.version>
<c3p0.version>0.9.1.2</c3p0.version>
<!--spring mvc-->
<jstl.version>1.2</jstl.version>
<servlet-api.version>4.0.1</servlet-api.version>
<jsp-api.version>2.1</jsp-api.version>
<hibernate.version>5.2.2.Final</hibernate.version>
<commons-io.version>2.4</commons-io.version>
<commons-fileupload.version>1.3.1</commons-fileupload.version>
<freemarker.version>2.3.23</freemarker.version>
</properties>
<!--模块依赖进行统一管理-->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.ssm.booksystem</groupId>
<artifactId>Book-Common</artifactId>
<version>${Book-Common.version}</version>
</dependency>
<dependency>
<groupId>com.ssm.booksystem</groupId>
<artifactId>Book-Dao</artifactId>
<version>${Book-Dao.version}</version>
</dependency>
<dependency>
<groupId>com.ssm.booksystem</groupId>
<artifactId>Book-Service</artifactId>
<version>${Book-Service.version}</version>
</dependency>
<dependency>
<groupId>com.ssm.booksystem</groupId>
<artifactId>Book-Entity</artifactId>
<version>${Book-Entity.version}</version>
</dependency>
<dependency>
<groupId>com.ssm.booksystem</groupId>
<artifactId>Book-WEBUI</artifactId>
<version>${Book-WEBUI.version}</version>
</dependency>
<!--common模块-->
<!--jackson-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency>
<!--apache-commons-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<!--log4j日志包 -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j.version}</version>
</dependency>
<!-- JUnit单元测试工具 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring-test.version}</version>
</dependency>
<!--Spring框架核心库 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- aspectJ AOP 织入器 -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectjweaver.version}</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>${cglib.version}</version>
</dependency>
<!--mybatis-spring适配器 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis-spring.version}</version>
</dependency>
<!--Spring java数据库访问包,在本例中主要用于提供数据源 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<!--mysql数据库驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector-java.version}</version>
</dependency>
<!-- mybatis ORM框架 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!--c3p0 连接池 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>${c3p0.version}</version>
</dependency>
<!-- Spring MVC -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- JSTL -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<!-- Servlet核心包 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet-api.version}</version>
</dependency>
<!--JSP -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>${jsp-api.version}</version>
</dependency>
<!--JSR303 -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>${hibernate.version}</version>
</dependency>
<!--文件上传 -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>${commons-io.version}</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>${commons-fileupload.version}</version>
</dependency>
<!-- FreeMarker -->
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>${freemarker.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
</project>
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common模块中的pom.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>BookSystem</artifactId>
<groupId>com.ssm.booksystem</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>Book-Common</artifactId>
<dependencies>
<!--jackson-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
</dependency>
<!--apache-commons-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
</dependencies>
</project>
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Dao模块中的pom.xml文件,这一层中我们需要依赖common层和实体层,因为在这一层中我们涉及到和数据库打交道,一张表就对应一个POJO
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>BookSystem</artifactId>
<groupId>com.ssm.booksystem</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>Book-Dao</artifactId>
<dependencies>
<dependency>
<groupId>com.ssm.booksystem</groupId>
<artifactId>Book-Common</artifactId>
</dependency>
<dependency>
<groupId>com.ssm.booksystem</groupId>
<artifactId>Book-Entity</artifactId>
</dependency>
<!--log4j日志包 -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
</dependency>
<!-- JUnit单元测试工具 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
</dependency>
<!--Spring框架核心库 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<!-- aspectJ AOP 织入器 -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
</dependency>
<!--mybatis-spring适配器 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
</dependency>
<!--Spring java数据库访问包,在本例中主要用于提供数据源 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<!--mysql数据库驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- mybatis ORM框架 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
</dependency>
<!--c3p0 连接池 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
</dependency>
</dependencies>
</project>
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Service模块中的pom.xml文件,这一层中我们需要依赖dao层
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>BookSystem</artifactId>
<groupId>com.ssm.booksystem</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>Book-Service</artifactId>
<dependencies>
<dependency>
<groupId>com.ssm.booksystem</groupId>
<artifactId>Book-Dao</artifactId>
</dependency>
</dependencies>
</project>
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实体层暂时不需要依赖任何的模块,Entity模块中的pom.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>BookSystem</artifactId>
<groupId>com.ssm.booksystem</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>Book-Entity</artifactId>
</project>
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Service模块中的pom.xml文件,这一层中我们需要依赖service层
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>BookSystem</artifactId>
<groupId>com.ssm.booksystem</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>Book-WEBUI</artifactId>
<packaging>war</packaging>
<name>Book-WEBUI Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.ssm.booksystem</groupId>
<artifactId>Book-Service</artifactId>
</dependency>
<!-- Spring MVC -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
</dependency>
<!-- Servlet核心包 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
</dependency>
<!--文件上传 -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
</dependencies>
<build>
<finalName>Book-WEBUI</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
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1.这是navicat的操作界面,前面的一些连接配置我在这里就不进行过多的描述了。
2.右键localhost_3306选择新建数据库,输入数据的名称,字符集我们选择倒数第二个,也就是utf-8的然后确定就可了。
3.数据库脚本
create table book(
bid int auto_increment primary key not null COMMENT'图书编号',
bname varchar(50) not null COMMENT'图书名称',
bauthor VARCHAR(50) COMMENT'图书作者'
)
INSERT into book(bname,bauthor)VALUES
('斗罗大陆','唐家三少'),
('假如给我三天光明','海伦凯勒'),
('斗破苍穹','天蚕土豆'),
('雪鹰领主','我吃西红柿')
SELECT * from book
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1.首先我们先移除父模块的src目录,其实移不移除都无所谓,在这里我主要是为了影响干扰,移除之后目录如下:
2.我们需要在每一个子模块添加对应的包名和配置文件 子模块common层
package com.booksystem.common;
import java.util.HashMap;
import java.util.Map;
/**
* 返回数据封装
*/
public class R extends HashMap<String, Object> {
private static final long serialVersionUID = 1L;
public R() {
put("code", 1);
put("msg", "success");
}
//错误时
public static R error() {
return error(500, "未知异常,请联系管理员");
}
public static R error(String msg) {
return error(500, msg);
}
public static R error(int code, String msg) {
R r = new R();
r.put("code", code);
r.put("msg", msg);
return r;
}
//成功时
public static R ok(String msg) {
R r = new R();
r.put("msg", msg);
return r;
}
public static R ok(Map<String, Object> map) {
R r = new R();
r.putAll(map);
return r;
}
public static R ok() {
return new R();
}
public static R ok(Object data) {
return new R().put("data",data);
}
@Override
public R put(String key, Object value) {
super.put(key, value);
return this;
}
}
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子模块dao层
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">
<!--命名空间应该是对应接口的包名+接口名 -->
<mapper namespace="com.booksystem.dao.BookDao">
<!--查询全部图书信息-->
<select id="getAllBooks" resultMap="bookMap">
select bid,bname,bauthor from book
</select>
<!--配置数据表和实体的映射关系-->
<resultMap id="bookMap" type="book">
<id column="bid" property="bid"/>
<result property="bname" column="bname"/>
<result column="bauthor" property="bauthor"/>
</resultMap>
</mapper>
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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"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
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-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
<!--1 引入属性文件,在配置中占位使用 -->
<context:property-placeholder location="classpath*:db.properties" />
<!--2 配置C3P0数据源 -->
<bean id="datasource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<!--驱动类名 -->
<property name="driverClass" value="${mysql.driver}" />
<!-- url -->
<property name="jdbcUrl" value="${mysql.url}" />
<!-- 用户名 -->
<property name="user" value="${mysql.uid}" />
<!-- 密码 -->
<property name="password" value="${mysql.password}" />
<!-- 当连接池中的连接耗尽的时候c3p0一次同时获取的连接数 -->
<property name="acquireIncrement" value="${mysql.acquireIncrement}"></property>
<!-- 初始连接池大小 -->
<property name="initialPoolSize" value="${mysql.initialPoolSize}"></property>
<!-- 连接池中连接最小个数 -->
<property name="minPoolSize" value="${mysql.minPoolSize}"></property>
<!-- 连接池中连接最大个数 -->
<property name="maxPoolSize" value="${mysql.maxPoolSize}"></property>
</bean>
<!--3 会话工厂bean sqlSessionFactoryBean -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- mybatis核心配置文件路径 -->
<property name="configLocation" value="classpath:mybatis.xml"></property>
<!-- 数据源 -->
<property name="dataSource" ref="datasource"/>
<!-- sql映射文件路径[mapper路径] -->
<property name="mapperLocations" value="classpath*:mapper/*Mapper.xml"></property>
</bean>
<!--4 自动扫描对象关系映射 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--指定会话工厂,如果当前上下文中只定义了一个则该属性可省去 -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 指定要自动扫描接口的基础包,实现接口 -->
<property name="basePackage" value="com.booksystem.dao"/>
</bean>
<!--5 声明式事务管理 -->
<!--定义事物管理器,由spring管理事务 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="datasource"></property>
</bean>
<!--支持注解驱动的事务管理,指定事务管理器 -->
<tx:annotation-driven transaction-manager="transactionManager" />
<!--6 容器自动扫描IOC组件 -->
<context:component-scan base-package="com.booksystem.dao"/>
<!--7 aspectj支持自动代理实现AOP功能 -->
<aop:aspectj-autoproxy/>
</beans>
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db.properties
##mysql连接字符串
#驱动
mysql.driver=com.mysql.jdbc.Driver
#连接字符串
mysql.url=jdbc:mysql://localhost:3306/booksystem?useUnicode=true&characterEncoding=UTF-8
#用户名
mysql.uid=root
#密码
mysql.password=123456
mysql.acquireIncrement=5
mysql.initialPoolSize=10
mysql.minPoolSize=5
mysql.maxPoolSize=20
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mybatis.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>
<properties resource="db.properties"></properties>
<settings>
<!--指定mybatis使用日志组件 -->
<setting name="logImpl" value="STDOUT_LOGGING"/>
</settings>
<!--设置别名-->
<typeAliases>
<package name="com.booksystem.entity"/>
</typeAliases>
</configuration>
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BookDao,java
package com.booksystem.dao;
import com.booksystem.entity.Book;
import java.util.List;
public interface BookDao {
//查询全部图书信息
public List<Book> getAllBooks();
}
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子模块entity层 Book.java
package com.booksystem.entity;
/*
*图书实体类
* */
public class Book {
private long bid; //图书编号
private String bname; // 图书名称
private String bauthor; // 图书作者
public long getBid() {
return bid;
}
public void setBid(long bid) {
this.bid = bid;
}
public String getBname() {
return bname;
}
public void setBname(String bname) {
this.bname = bname;
}
public String getBauthor() {
return bauthor;
}
public void setBauthor(String bauthor) {
this.bauthor = bauthor;
}
//无参构造方法
public Book(){}
//带参构造方法
public Book(long bid, String bname, String bauthor) {
this.bid = bid;
this.bname = bname;
this.bauthor = bauthor;
}
@Override
public String toString() {
return "Book{" +
"bid=" + bid +
", bname='" + bname + '/'' +
", bauthor='" + bauthor + '/'' +
'}';
}
}
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写了怎么多的东西,我们需要测试一下,减少错误,现在我们只是在做练习,代码量比较少但是到了真正项目的时候代码量肯定比现在多许多,为了养成这种习惯,我一般写到Dao层的时候就进行测试一下。
BookTest.java
package com.booksystem.dao;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.annotation.Rollback;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.transaction.annotation.Transactional;
import static org.junit.Assert.*;
//指定bean注入的配置文件
@ContextConfiguration("/applicationContext.xml")
//使用标准的junit
@RunWith(SpringJUnit4ClassRunner.class)
@Transactional //事务管理
@Rollback(true) //是否回滚
public class BookDaoTest {
@Autowired
private BookDao bookDao;
@Test
public void getAllBooks() {
System.out.println(bookDao.getAllBooks());
}
}
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子模块service层
BookService
package com.booksystem.service;
import com.booksystem.entity.Book;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
public interface BookService {
//查询全部图书信息
public List<Book> getAllBooks();
}
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BookImple
package com.booksystem.imple;
import com.booksystem.dao.BookDao;
import com.booksystem.entity.Book;
import com.booksystem.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class BookImple implements BookService {
@Autowired
public BookDao bookDao;
public List<Book> getAllBooks() {
return bookDao.getAllBooks();
}
}
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子模块webui层 我们发现在这一层中没有存放源代码的文件加,所以我们需要自己添加,选择file,project structure
生成之后的目录
BookController.java
package com.book.controller;
import com.booksystem.common.R;
import com.booksystem.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
@RequestMapping("/book")
public class BookController {
@Autowired
public BookService bookService;
@GetMapping("/getAllBook")
@ResponseBody
public R getAllBook(){
return R.ok(bookService.getAllBooks());
}
}
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springmvc-servlet.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
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">
<!-- 自动扫描包,实现支持注解的IOC -->
<context:component-scan base-package="com.booksystem" />
<!-- Spring MVC不处理静态资源 -->
<mvc:default-servlet-handler />
<!-- 支持mvc注解驱动 -->
<mvc:annotation-driven enable-matrix-variables="true" />
<!-- 配置映射媒体类型的策略 -->
<bean
class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
<property name="removeSemicolonContent" value="false" />
</bean>
<!-- 内部视图解析器,JSP与JSTL模板 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
id="internalResourceViewResolver">
<!--指定视图渲染类 -->
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<!--自动添加到路径中的前缀 -->
<property name="prefix" value="/WEB-INF/views/" />
<!--自动添加到路径中的后缀 -->
<property name="suffix" value=".html" />
<!--设置所有视图的内容类型,如果视图本身设置内容类型视图类可以忽略 -->
<property name="contentType" value="text/html;charset=UTF-8" />
<!-- 优先级,越小越前 -->
<property name="order" value="1" />
</bean>
<!--文件上传解析器 -->
<!--Spring MVC默认不能识别multipart格式的文件内容 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.support.StandardServletMultipartResolver">
</bean>
<mvc:cors>
<mvc:mapping path="/**"
allowed-origins="*"
allowed-methods="POST,GET, OPTIONS,DELETE,PUT"
allowed-headers="Content-Type,ContentType,Access-Control-Allow-Headers, Authorization, X-Requested-With"
allow-credentials="true"/>
</mvc:cors>
</beans>
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web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<welcome-file-list>
<!--欢迎页-->
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<listener>
<description>Spring容器加载监听器</description>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<description>设置Spring加载时的配置文件位置,默认位置在WEB-INF/lib目录下</description>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:applicationContext.xml</param-value>
</context-param>
<!--Spring MVC 前置Servlet,中心控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!--Spring MVC配置文件路径 -->
<param-value>classpath*:springmvc-servlet.xml</param-value>
</init-param>
<!-- 启动动优先级,越小越早加载 -->
<load-on-startup>1</load-on-startup>
<!--Servlet3.0以上文件上传配置 -->
<multipart-config>
<!--上传文件的最大限制5MB -->
<max-file-size>5242880</max-file-size>
<!--请求的最大限制20MB -->
<max-request-size>20971520</max-request-size>
<!--当文件的大小超过临界值时将写入磁盘 -->
<file-size-threshold>0</file-size-threshold>
</multipart-config>
</servlet>
<!-- Servlet访问的路径映射,所有的访问都必须经过调度用的前置控制品 -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--编码过滤器 -->
<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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<!-- 路径映射 -->
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
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3.配置tomcat
4.项目部署
5.启动项目
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>图书管理系统</title>
<style>
h1{
text-align: center;
}
#myTab{
width: 800px;
margin: 0 auto;
}
</style>
</head>
<body>
<h1>图书管理系统</h1>
<table id="myTab" cellpadding="0" cellspacing="0" border="1">
<tr>
<td>编号</td>
<td>名称</td>
<td>作者</td>
</tr>
</table>
<script src="js/jquery-1.11.3.min.js"></script>
<script>
$.ajax({
url:'/book/getAllBook',
type:'get',
dataType:'json',
}).done(function (data) {
if(data.code===1){
$("#myTab tr:not(:eq(0))").remove();
for (var i=0;i<data.data.length;i++){
var tr="<tr>";
tr+="<td>"+(i+1)+"</td>";
tr+="<td>"+data.data[i].bname+"</td>";
tr+="<td>"+data.data[i].bauthor+"</td>";
tr+="</tr>"
$("#myTab").append(tr);
}
}
})
</script>
</body>
</html>
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