Spring
Spring是一个开源框架,Spring是于2003 年兴起的一个轻量级的Java 开发框架,由Rod Johnson 在其著作Expert One-On-One J2EE Development and Design中阐述的部分理念和原型衍生而来。它是为了解决企业应用开发的复杂性而创建的。Spring使用基本的JavaBean来完成以前只可能由EJB完成的事情。然而,Spring的用途不仅限于服务器端的开发。从简单性、可测试性和松耦合的角度而言,任何Java应用都可以从Spring中受益。 简单来说,Spring是一个轻量级的控制反转(IOC)和面向切面(AOP)的容器框架。
###** SpringMVC** Spring MVC属于SpringFrameWork的后续产品,已经融合在Spring Web Flow里面。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色,这种分离让它们更容易进行定制。
###** MyBatis** MyBatis 本是apache的一个开源项目iBatis, 2010年这个项目由apache software foundation 迁移到了google code,并且改名为MyBatis 。MyBatis是一个基于Java的持久层框架。iBATIS提供的持久层框架包括SQL Maps和Data Access Objects(DAO)MyBatis 消除了几乎所有的JDBC代码和参数的手工设置以及结果集的检索。MyBatis 使用简单的 XML或注解用于配置和原始映射,将接口和 Java 的POJOs(Plain Old Java Objects,普通的 Java对象)映射成数据库中的记录。
开发环境搭建
- jdk1.7及以上
- apache-maven-3.3.9
- apache-tomcat-8.0.9
- 开发工具IDEA
整合SSM框架
- 新建maven工程,目录如下:
- 建立MVC分层
3.resources文件夹下创建资源文件
详细配置
1.Maven引入需要的JAR包
jar包用途注释有说明
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.test</groupId>
<artifactId>ssmDemo</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>ssmDemo</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>4.3.6.RELEASE</spring.version>
</properties>
<dependencies>
<!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</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-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${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-dao</artifactId>
<version>2.0.8</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.6</version>
</dependency>
<!-- druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.26</version>
</dependency>
<!-- mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.5</version>
</dependency>
<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.1</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<!-- log4j日志文件管理 -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.21</version>
</dependency>
</dependencies>
<build>
<finalName>ssmDemo</finalName>
<!--这里进行配置,后会自动的加载mapper.xml文件 :配置Maven 对resource文件 过滤 -->
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
<!--将编译器的版本设定为1.7 -->
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<!-- 基于Maven: MyBatis Generator -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>
</plugins>
</build>
</project>
2.web.xml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">
<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>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>ssmDemo</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>ssmDemo</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<context-param>
<param-name>webAppRootKey</param-name>
<param-value>ssmDemo.root</param-value>
</context-param>
<!-- Log4j 配置 -->
<context-param>
<param-name>log4jRefreshInterval</param-name>
<param-value>10000</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
</web-app>
3.applicationContext.xml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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<import resource="spring-mvc.xml" />
<import resource="spring-mybatis.xml"/>
</beans>
4.dataSource.properties配置
driverClassName=com.mysql.jdbc.Driver
jdbc.connectionURL=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&serverTimezone=UTC
jdbc.username=root
jdbc.password=123456
#<!-- 初始化连接大小 -->
initialSize=0
#<!-- 连接池最大使用连接数量 -->
maxActive=20
#<!-- 连接池最小空闲 -->
minIdle=0
#<!-- 获取连接最大等待时间 -->
maxWait=60000
#<!-- 配置一个连接在池中最小生存的时间,单位是毫秒 -->
minEvictableIdleTimeMillis=25200000
# <!-- 连接超时被回收 -->
removeAbandonedTimeout=1800
5.log4j.properties配置
log4j.rootLogger=info , stdout, D, E
log4j.logger.java.sql.Connection = DEBUG
log4j.logger.java.sql.Statement = DEBUG
log4j.logger.java.sql.PreparedStatement = DEBUG
log4j.logger.java.sql.ResultSet = DEBUG
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
#文件大小到达指定尺寸的时候产生一个新的文件
log4j.appender.D = org.apache.log4j.RollingFileAppender
#指定debug.log文件输出地
log4j.appender.D.File = ${YHHSMS.root}/WEB-INF/logs/debug.log
#指定每个log.debug文件大小为20k,建议设置成20M
log4j.appender.D.MaxFileSize = 20MB
#备份log文件最多为10个,即debug.log10,之后还需要记录日志的话,将重新覆盖debug.log,debug.log.1 ...
log4j.appender.D.MaxBackupIndex=10
#true意思:将消息增加到指定文件中,false指将消息覆盖指定的文件内容
log4j.appender.D.Append = true
#消息输出层次
log4j.appender.D.Threshold = DEBUG
#消息输出样式
log4j.appender.D.layout = org.apache.log4j.PatternLayout
#消息输出格式
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
#每天产生一个日志文件
log4j.appender.E = org.apache.log4j.DailyRollingFileAppender
#指定debug.log文件输出地
log4j.appender.E.File = ${YHHSMS.root}/WEB-INF/logs/error.log
#每天产生一个新的日志
log4j.appender.E.DatePattern = "."yyyy-MM-dd
#true意思:将消息增加到指定文件中,false指将消息覆盖指定的文件内容
log4j.appender.E.Append = true
#消息输出层次
log4j.appender.E.Threshold = ERROR
#消息输出样式
log4j.appender.E.layout = org.apache.log4j.PatternLayout
#消息输出格式
log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
6.spring-mvc.xml配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">
<!-- driven -->
<mvc:annotation-driven/>
<!-- data config -->
<context:property-placeholder location="classpath:dataSource.properties"/>
<!-- scan -->
<context:component-scan base-package="com.test.ssmDemo"/>
</beans>
7.spring-mybatis.xml配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">
<!-- 配置数据源 -->
<bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
init-method="init" destroy-method="close">
<property name="url" value="${jdbc.connectionURL}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!-- 初始化连接大小 -->
<property name="initialSize" value="${initialSize}" />
<!-- 连接池最大使用连接数量 -->
<property name="maxActive" value="${maxActive}" />
<!-- 连接池最小空闲 -->
<property name="minIdle" value="${minIdle}" />
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="${maxWait}" />
<property name="testOnBorrow" value="false" />
<property name="testOnReturn" value="false" />
<property name="testWhileIdle" value="true" />
<!-- 配置一个连接在池中最小生存的时间,单位是毫秒 -->
<property name="minEvictableIdleTimeMillis" value="${minEvictableIdleTimeMillis}" />
<!-- 打开removeAbandoned功能 -->
<property name="removeAbandoned" value="true" />
<!-- 连接超时被回收 -->
<property name="removeAbandonedTimeout" value="${removeAbandonedTimeout}" />
<!-- 关闭abanded连接时输出错误日志 -->
<property name="logAbandoned" value="true" />
<!-- 监控数据库 -->
<property name="filters" value="mergeStat" />
</bean>
<!-- sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="mapperLocations" value="classpath:com/test/ssmDemo/mapper/*.xml" />
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.test.ssmDemo.mapper" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
<!-- 配置事务管理 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 使用tx标签配置的拦截器 实现事务注入 -->
<tx:advice id="transactionAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="register*" propagation="REQUIRED" />
<tx:method name="upd*" propagation="REQUIRED" />
<tx:method name="get*" propagation="REQUIRED" />
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="transactionPointcut"
expression="execution(* com.test.ssmDemo.service.impl.*.*(..))" />
<aop:advisor pointcut-ref="transactionPointcut"
advice-ref="transactionAdvice" />
</aop:config>
</beans>
8.generator.properties和generatorConfig.xml配置
PS:基于Maven的Mybatis_generator生成mapper,model 自行百度
关于插件方式生成mapper,model请参考
数据库设计
编码设计
实现简单的用户列表查询
1.Controller
package com.test.ssmDemo.controller;
import com.test.ssmDemo.service.UserService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class UserController {
@Autowired
private UserService userService;
public static final Logger logger;
static {
logger = LoggerFactory.getLogger(UserController.class);
}
@RequestMapping(value = "/getUserList", method = RequestMethod.GET)
public void getUserList() {
logger.info(userService.getUserList().toString());
}
}
2.Service
package com.test.ssmDemo.controller;
import com.test.ssmDemo.service.UserService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class UserController {
@Autowired
private UserService userService;
public static final Logger logger;
static {
logger = LoggerFactory.getLogger(UserController.class);
}
@RequestMapping(value = "/getUserList", method = RequestMethod.GET)
public void getUserList() {
logger.info(userService.getUserList().toString());
}
}
3.ServiceImpl
package com.test.ssmDemo.service.impl;
import com.test.ssmDemo.mapper.UserMapper;
import com.test.ssmDemo.model.User;
import com.test.ssmDemo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;
@Override
public List<User> getUserList() {
return userMapper.selectUserList();
}
}
4.UserMapper.java
package com.test.ssmDemo.mapper;
import com.test.ssmDemo.model.User;
import java.util.List;
public interface UserMapper {
int deleteByPrimaryKey(String userId);
int insert(User record);
int insertSelective(User record);
User selectByPrimaryKey(String userId);
int updateByPrimaryKeySelective(User record);
int updateByPrimaryKey(User record);
List<User> selectUserList();
}
5.UserMapper.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" >
<mapper namespace="com.test.ssmDemo.mapper.UserMapper">
<resultMap id="BaseResultMap" type="com.test.ssmDemo.model.User">
<id column="user_id" property="userId" jdbcType="VARCHAR"/>
<result column="name" property="name" jdbcType="VARCHAR"/>
<result column="age" property="age" jdbcType="INTEGER"/>
<result column="tel" property="tel" jdbcType="VARCHAR"/>
</resultMap>
<sql id="Base_Column_List">
user_id, name, age, tel
</sql>
<select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.String">
select
<include refid="Base_Column_List"/>
from user
where user_id = #{userId,jdbcType=VARCHAR}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.String">
delete from user
where user_id = #{userId,jdbcType=VARCHAR}
</delete>
<insert id="insert" parameterType="com.test.ssmDemo.model.User">
insert into user (user_id, name, age,
tel)
values (#{userId,jdbcType=VARCHAR}, #{name,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER},
#{tel,jdbcType=VARCHAR})
</insert>
<insert id="insertSelective" parameterType="com.test.ssmDemo.model.User">
insert into user
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="userId != null">
user_id,
</if>
<if test="name != null">
name,
</if>
<if test="age != null">
age,
</if>
<if test="tel != null">
tel,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="userId != null">
#{userId,jdbcType=VARCHAR},
</if>
<if test="name != null">
#{name,jdbcType=VARCHAR},
</if>
<if test="age != null">
#{age,jdbcType=INTEGER},
</if>
<if test="tel != null">
#{tel,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="com.test.ssmDemo.model.User">
update user
<set>
<if test="name != null">
name = #{name,jdbcType=VARCHAR},
</if>
<if test="age != null">
age = #{age,jdbcType=INTEGER},
</if>
<if test="tel != null">
tel = #{tel,jdbcType=VARCHAR},
</if>
</set>
where user_id = #{userId,jdbcType=VARCHAR}
</update>
<update id="updateByPrimaryKey" parameterType="com.test.ssmDemo.model.User">
update user
set name = #{name,jdbcType=VARCHAR},
age = #{age,jdbcType=INTEGER},
tel = #{tel,jdbcType=VARCHAR}
where user_id = #{userId,jdbcType=VARCHAR}
</update>
<select id="selectUserList" resultType="com.test.ssmDemo.model.User">
SELECT
user_id AS userId,
name,
age,
tel
FROM user;
</select>
</mapper>
最后把项目跑起来
效果如图: