一、思路:
(一) Dao层:
1、 SqlMapConfig.xml,空文件即可。需要文件头。
2、 applicationContext_dao.xml。
a) 数据库连接池
b) SqlSessionFactory对象,需要spring和mybatis整合包下的。
c) 配置mapper文件扫描器。
(二)Service层:
1、applicationContext_service.xml包扫描器,扫描@service注解的类。
2、applicationContext_trans.xml配置事务。
(三)Controller层:
Springmvc.xml
1、包扫描器,扫描@Controller注解的类。
2、配置注解驱动。
3、视图解析器。
(四)web.xml
1. 配置spring容量监听器
2. 配置前端控制器
二、构建项目
(一)构建maven项目,添加依赖
<?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.cenobitor</groupId>
<artifactId>ssm_template</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>ssm_template Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<!--设置编译的版本使用1.8版本-->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<!-- 和设置编译插件是一样的效果-->
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<junit.version>4.12</junit.version>
<spring.version>4.3.10.RELEASE</spring.version>
<servlet-api.version>2.5</servlet-api.version>
<mybatis.version>3.2.8</mybatis.version>
<mybatis.spring.version>1.2.2</mybatis.spring.version>
<pagehelper.version>4.0.0</pagehelper.version>
<javassist.version>3.11.0.GA</javassist.version>
<mysql.version>5.1.32</mysql.version>
<druid.version>1.0.9</druid.version>
<commons-fileupload.version>1.3.1</commons-fileupload.version>
<commons-lang3.version>3.3.2</commons-lang3.version>
<commons-io.version>1.3.2</commons-io.version>
<jackson.version>2.8.9</jackson.version>
<jstl.version>1.2</jstl.version>
<jsp-api.version>2.0</jsp-api.version>
<fastjson.version>1.2.28</fastjson.version>
<slf4j.version>1.6.4</slf4j.version>
<lombok.version>1.16.20</lombok.version>
</properties>
<dependencies>
<!-- Apache工具组件 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>${commons-io.version}</version>
</dependency>
<!-- Jackson Json处理工具包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!--alibaba json处理工具包-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>${fastjson.version}</version>
</dependency>
<!-- 日志处理 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!--实体类get/set注解-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<!--单元测试-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!--jsp相关-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>${servlet-api.version}</version>
<scope>provided</scope>
</dependency>
<!-- 文件上传组件 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>${commons-fileupload.version}</version>
</dependency>
<!-- Mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
</dependency>
<!--MyBatis分页插件-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>${pagehelper.version}</version>
</dependency>
<!-- MySql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!-- 连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
</dependencies>
<build>
<finalName>ssm_template</finalName>
<!--设置mapper.xml配置与mapper类处于同个包下,否则编译时候无法生成到同一目录下,会报BindingException-->
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
</resource>
</resources>
<plugins>
<!-- 配置Tomcat7插件 -->
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<uriEncoding>UTF-8</uriEncoding>
</configuration>
</plugin>
<!-- 配置打包时跳过测试 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.12.4</version>
</plugin>
</plugins>
</build>
</project>
(二)applicationContext.xml的配置
1、applicationContext_dao.xml(数据库)的配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
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-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- dao层 数据库连接部分-->
<!-- 加载配置文件 -->
<context:property-placeholder location="classpath:properties/db.properties" />
<!-- 数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}"/>
<!-- 连接池的最大数据库连接数 -->
<property name="maxActive" value="10" />
<!-- 最大空闲数 -->
<property name="maxIdle" value="5" />
</bean>
<!-- 配置SqlSessionFactory单例 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 配置数据源 -->
<property name="dataSource" ref="dataSource" />
<!-- 加载mybatis核心配置文件 -->
<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" />
<!--别名包扫描-->
<property name="typeAliasesPackage" value="com.cenobitor.pojo"/>
</bean>
<!-- 动态代理dao配置,包扫描(推荐方式)-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 支持多包配置,多包时用,或者;分隔 -->
<property name="basePackage" value="com.cenobitor.mapper" />
</bean>
</beans>
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm?characterEncoding=utf-8
jdbc.username=root
jdbc.password=
2、applicationContext_service.xml(service扫描)的配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
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-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- 配置service扫描 -->
<context:component-scan base-package="com.cenobitor.service"/>
</beans>
3、applicationContext_trans.xml(事务)的配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<!-- 事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="insert*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED"/>
<tx:method name="update*" propagation="REQUIRED"/>
<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="query*" propagation="SUPPORTS" read-only="true"/>
</tx:attributes>
</tx:advice>
<!-- 切面 -->
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* com.cenobitor.service.*.*(..))"/>
</aop:config>
</beans>
(三)web.xml 的配置
<?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_2_5.xsd"
id="WebApp_ID" version="2.5">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- spring配置文件路径 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:/spring/applicationContext_*.xml</param-value>
</context-param>
<!-- 解决post乱码问题 -->
<filter>
<filter-name>encoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- 设置编码参是UTF8 -->
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 配置SpringMvc 前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--指定SpringMvc 配置文件-->
<!-- springmvc的配置文件默认路径是 /WEB-INF/${servlet-name}_servlet.xml -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>
</web-app>
(四)MyBatis的配置文件,实体类和对应的映射文件由通用Mapper生成,在此采用手动创建方式(详细见下文件图片上传案例)
此处建文件,配置mybatis分页插件即可:
<?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>
<plugins>
<!-- com.github.pagehelper为PageHelper类所在包名 -->
<plugin interceptor="com.github.pagehelper.PageHelper">
<!-- 设置数据库类型Oracle,Mysql,MariaDB,SQLite,Hsqldb,PostgreSQL六种数据库-->
<property name="dialect" value="mysql"/>
</plugin>
</plugins>
</configuration>
(五)springMVC的配置
<?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-4.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!--配置controller扫描-->
<context:component-scan base-package="com.cenobitor.controller"/>
<!-- 注解驱动 -->
<mvc:annotation-driven/>
<!--<!–自定义转换器配置模板–>
<!–使用自定义转换器–>
<mvc:annotation-driven conversion-service="myConverter" />
<!– 定义转换器 –>
<bean id="myConverter" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<property name="converters">
<set>
<!– 日期转换器 –>
<bean class="com.cenobitor.converter.DateConverter" />
</set>
</property>
</bean>-->
<!-- 配置多媒体解析器,用于上传等的配置,如果是纯文本则无需配置 -->
<!-- 注意:这里的id只能是multipartResolver -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 限定文件最大上传大小为:8MB -->
<property name="maxUploadSize" value="8388608" />
</bean>
<!--可减少简写路径名-->
<!--<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!– 配置逻辑视图的前缀 –>
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>-->
</beans>
(六)log4j配置文件,位于resources包下:
log4j.rootLogger=DEBUG, Console
#Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
log4j.logger.java.sql.ResultSet=INFO
log4j.logger.org.apache=INFO
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG
三、 图片上传预览
1、创建表以及pojo
CREATE TABLE `pic` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(255) DEFAULT NULL,
`url` varchar(255) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8
package com.cenobitor.pojo;
import lombok.Data;
/**
* @Description:
* @Date: Created in 11:05 AM 2018/5/1
* @Author: Cenobitor
* @Modified By:
*/
@Data
public class Pic {
private Integer id;
private String name;
private String url;
public Pic(String name, String url) {
this.name = name;
this.url = url;
}
public Pic() {
}
}
2、设置文件存储的虚拟路径
2、创建上传页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>上传图片</title>
</head>
<body>
<form id="upload" action="/uploadpic.action" method="post" enctype="multipart/form-data">
<input type="file" name="picFile"/>
<br/>
<input type="submit" value="提交"/>
</form>
</body>
</html>
3、创建Controller类
package com.cenobitor.controller;
import com.cenobitor.service.UploadFileService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
@Controller
public class UploadFileController {
@Autowired
private UploadFileService uploadFileService;
//图片上传用MultipartFile接收文件,其中参数名要表单中的文件名一致
@RequestMapping("/uploadpic")
public String uploadPic(MultipartFile picFile) throws Exception {
String picUrl = uploadFileService.UploadPic(picFile);
if (picUrl == null){
return "redirect:error.html";
}
//重定向预览图片
return "redirect:"+picUrl;
}
}
4、创建service层
public interface UploadFileService {
public String UploadPic(MultipartFile picFile);
}
package com.cenobitor.service.impl;
import com.cenobitor.mapper.PicMapper;
import com.cenobitor.pojo.Pic;
import com.cenobitor.service.UploadFileService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;
import java.io.File;
import java.io.IOException;
import java.util.UUID;
@Service
@Transactional
public class UploadFileServiceImpl implements UploadFileService {
@Autowired
private PicMapper picMapper;
@Override
public String UploadPic(MultipartFile picFile) {
try {
// 图片新名字
String name = UUID.randomUUID().toString();
// 图片原名字
String oldName = picFile.getOriginalFilename();
// 后缀名
String exeName = oldName.substring(oldName.lastIndexOf("."));
//保存图片路径为绝对路径
File pic = new File("/Users/Shared/jpg/" + name + exeName);
// 保存图片到本地磁盘
picFile.transferTo(pic);
//保存数据到数据库中
picMapper.add(new Pic(name,"../jpg/"+name+exeName));
return "/jpg/"+name+exeName;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}
5、创建dao层(mapper层)
package com.cenobitor.mapper;
import com.cenobitor.pojo.Pic;
public interface PicMapper {
//添加图片
int add(Pic pic);
}
<?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">
<!--namespace为对应的mapper类的全路径名-->
<mapper namespace="com.cenobitor.mapper.PicMapper">
<!-- 添加 -->
<!-- id为对应的方法名, parameterType为入参的全路径名-->
<insert id="add" parameterType = "com.cenobitor.pojo.Pic">
insert into
pic(name,url)
values
(#{name},#{url});
</insert>
</mapper>
6、项目的目录结构
7、效果
本文永久更新链接地址: https://www.linuxidc.com/Linux/2018-05/152167.htm