spring --搭建ssm最小系统

时间  2019-11-09
标签 spring 搭建 ssm 最小 系统 栏目 Spring 繁體版
原文   原文链接

所需基本jar包分类
1.spring相关：core、bean、context、expression、commons-logging
2.web相关：web、webMVC
3.切面及异常：aop、tx
4.mysql相关：druid、mysql-connector
5.mybatis相关：mybatis、mybatis-spring
6.servlet相关：servlet-api
7.文件相关：fileupload、commons-io
8.log4j相关：log4j、common-logging
9.json相关：jackson-core、databind
10.swagger：swagger-springmvc
11.redis：jredis、spring-data-redis
以下是整合ssm框架的最小系统，各位在根据本身的需求配置各自的功能。
###整合ssm框架前置条件
1.下载安装jdk
2.下载安装maven
3.下载Tomcat
4.下载STS(eclipse)
备注：如上安装配置自行百度，也能够查阅我以前的博客。
###整合ssm框架步骤
####1.新建一个maven工程，工程目录以下
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####2.在src/main/java文件下建立分层包
分层指的是mvc，controller负责处理请求；service负责业务层；serviceImpl负责与数据库链接；mapper存放的是mybatis的xx.mapper和xx.xml文件；bean下存放实体类。
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####3.在src/main/resources文件下建立配置文件
db.properties指的是数据库配置信息；log4j.properties指的是打印输出信息；spring-config指的是spring的配置信息；spring-mvc指的是mvc的配置信息；spring-mybatis指的是mybatis的配置信息。
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####4.在pom.xml文件添加所需jar包java

<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>ssm</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>ssm Maven Webapp</name>
  <url>http://maven.apache.org</url>
  
  <properties>
  	<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  	<spring.version>4.2.0.RELEASE</spring.version>
  	<jackson-core.version>2.6.1</jackson-core.version>
  </properties>
  
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>

	<!-- servlet -->
	<dependency>
		<groupId>javax.servlet</groupId>
		<artifactId>javax.servlet-api</artifactId>
		<version>3.1.0</version>
	</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.aspectj</groupId>
		<artifactId>aspectjweaver</artifactId>
		<version>1.8.6</version>
	</dependency>

	<!-- alibaba -->
	<dependency>
		<groupId>com.alibaba</groupId>
		<artifactId>druid</artifactId>
		<version>1.0.15</version>
	</dependency>
	
	<!-- mysql -->
	<dependency>
		<groupId>mysql</groupId>
		<artifactId>mysql-connector-java</artifactId>
		<version>5.1.36</version>
	</dependency>

	<!-- slf4j -->
	<dependency>
		<groupId>org.slf4j</groupId>
		<artifactId>slf4j-log4j12</artifactId>
		<version>1.7.10</version>
	</dependency>

	<!-- mybatis -->
	<dependency>
		<groupId>org.mybatis</groupId>
		<artifactId>mybatis</artifactId>
		<version>3.3.0</version>
	</dependency>
	<dependency>
		<groupId>org.mybatis</groupId>
		<artifactId>mybatis-spring</artifactId>
		<version>1.2.3</version>
	</dependency>
    
  </dependencies>
  <build>
    <finalName>ssm</finalName>
    <defaultGoal>compile</defaultGoal>
  </build>
</project>

备注：若是网速较慢的话，这个过程可能会有点长，能够一个个的下载，或者是配置maven的镜像站(笔者在家里的网速特慢，没有配置成功过；笔者在公司的网速还不错，下载jar包均在5s之内。其实不须要配置镜像站，maven自己下载的速度已经很快了)，下载完成后，maven jar包列表以下，显示是按照pom.xml配置的顺序显示的
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####5.db.properties配置信息mysql

driverClassName=com.mysql.jdbc.Driver
jdbc_url=jdbc:mysql://192.168.2.11:3306/test?useUnicode=true&characterEncoding=UTF-8
jdbc_username=root
jdbc_password=123456

####6.log4j.properties配置信息web

log4j.rootLogger=DEBUG, stdout, D, E
#log4j.logger.test=info
#log4j.logger.org.apache.jasper = DEBUG
#log4j.logger.org.apache.catalina.startup.TldConfig = DEBUG
#log4j.logger.org.apache.catalina.session.ManagerBase = DEBUG
log4j.logger.com.readygo.app.mapper=DEBUG

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

log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = ${app.root}/WEB-INF/logs/debug.log
log4j.appender.D.DatePattern = "."yyyy-MM
log4j.appender.D.Append = true
log4j.appender.D.Threshold = DEBUG
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n

log4j.appender.E = org.apache.log4j.DailyRollingFileAppender
log4j.appender.E.File = ${app.root}/WEB-INF/logs/error.log
log4j.appender.E.Append = true
log4j.appender.E.DatePattern = "."yyyy-MM
log4j.appender.E.Threshold = ERROR
log4j.appender.E.layout = org.apache.log4j.PatternLayout
log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n

####7.spring配置文件，很简洁吧redis

<?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">
	
	<!-- 导入springMVC 与 springMybatis -->
	<import resource="spring-mvc.xml"/>	
	<import resource="spring-mybatis.xml"/>
	
	
</beans>

####8.springMVC配置信息，也很简洁吧spring

<?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/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">
	
	<!-- 扫描包 -->
	<context:component-scan base-package="com.test.spring"></context:component-scan>
	
</beans>

####9.springMybatis配置信息sql

<?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:tx="http://www.springframework.org/schema/tx"
	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-4.2.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">

	<!-- 读取配置文件 -->
	<context:property-placeholder location="classpath:db.properties"/>
	
	<!-- 配置数据源 -->
	<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" 
			init-method="init" destroy-method="close">
		<property name="driverClassName" value="${driverClassName}"></property>
		<property name="url" value="${jdbc_url}"></property>
		<property name="username" value="${jdbc_username}"></property>
		<property name="password" value="${jdbc_password}"></property>
		
	</bean>
	
	<!-- spring整合mybatis -->
	<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="mapperLocations" value="classpath:com/test/spring/mapper/*.xml" />
	</bean>
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="com.test.spring.mapper" />
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactoryBean" />
	</bean>

		
	<!-- 配置事务管理器 -->
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource"></property>
	</bean>
	<!-- 使事务注解生效 -->
	<tx:annotation-driven transaction-manager="transactionManager"/>
	
</beans>

####10.建立数据库和表
不须要链接数据库的，这一步能够省略。这里须要安装mysql数据库、按照数据库客户端，我装的是navicat。我建的数据库、表以下，简单点，就只建立了一个T_user表，字段如右边查询信息
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####11.工程运行起来
这个时候是一个空的工程，可是能够运行起来了哈。若是各位的运行起来报错的话，请查找相关缘由。这一步经过了，才能开始业务部分。
####12.建立controller
在文件src/main/java下面的com.test.spring.controller下建立UserController类数据库

package com.test.spring.controller;

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;

import com.test.spring.service.UserService;


@RestController
public class UserController {
	
	@Autowired
	private UserService userService;
	
	@RequestMapping(value="/userList",method= RequestMethod.GET)
	public void getUserList() {
		
		userService.getUserList();
	}

}

####13.建立UserServiceexpress

package com.test.spring.service;

public interface UserService {
	
	public void getUserList();
}

####14.建立UserServiceImplapache

package com.test.spring.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.test.spring.bean.User;
import com.test.spring.mapper.UserMapper;
import com.test.spring.service.UserService;

@Service
public class UserServiceImpl implements UserService {
	
	@Autowired
	private UserMapper userMapper;

	@Override
	public void getUserList() {
		
		List<User> listUser = userMapper.getUserList();
		System.out.println(listUser);
	}

}

####15.建立UserMapper.java、UserMapper.xml与User(它是bean)
建立这些，能够使用mybatis的自动建立代码工具，请参考个人博客，有很详细的介绍。
UserMapper.java以下json

package com.test.spring.mapper;

import java.util.List;

import com.test.spring.bean.User;

public interface UserMapper {
    int deleteByPrimaryKey(Integer id);

    int insert(User record);

    int insertSelective(User record);

    User selectByPrimaryKey(Integer id);

    int updateByPrimaryKeySelective(User record);

    int updateByPrimaryKey(User record);
    
    List<User> getUserList();
}

UserMapper.xml以下

<?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.spring.mapper.UserMapper" >
  <resultMap id="BaseResultMap" type="com.test.spring.bean.User" >
    <id column="id" property="id" jdbcType="INTEGER" />
    <result column="name" property="name" jdbcType="VARCHAR" />
  </resultMap>
  <sql id="Base_Column_List" >
    id, name
  </sql>
  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
    select 
    <include refid="Base_Column_List" />
    from t_user
    where id = #{id,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
    delete from t_user
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="com.test.spring.bean.User" >
    insert into t_user (id, name)
    values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR})
  </insert>
  <insert id="insertSelective" parameterType="com.test.spring.bean.User" >
    insert into t_user
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        id,
      </if>
      <if test="name != null" >
        name,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        #{id,jdbcType=INTEGER},
      </if>
      <if test="name != null" >
        #{name,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="com.test.spring.bean.User" >
    update t_user
    <set >
      <if test="name != null" >
        name = #{name,jdbcType=VARCHAR},
      </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.test.spring.bean.User" >
    update t_user
    set name = #{name,jdbcType=VARCHAR}
    where id = #{id,jdbcType=INTEGER}
  </update>
  
  <select id="getUserList" resultType="com.test.spring.bean.User">

	SELECT
	tu.id AS id,
	tu.`name` AS `name`
	FROM
	t_user tu
  
  </select>
  
</mapper>

User类

public class User {
    private Integer id;

    private String name;
}

####16.web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" 
		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
		version="2.5">

	<!-- 编码过滤器 -->
	<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>
	
	<!-- 工程映射 -->
	<servlet>
		<servlet-name>ssm</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:spring-config.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>ssm</servlet-name>
		<url-pattern>/*</url-pattern>
	</servlet-mapping>
	
	<!-- log4j start -->
	<context-param>
		<param-name>log4jConfigLocation</param-name>
		<param-value>classpath:log4j.properties</param-value>
	</context-param>
	<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>
	<!-- log4h end -->
	
</web-app>

####17.测试

2016-09-06 14:24:15  [ http-nio-8080-exec-2:25440 ] - [ DEBUG ]  Creating a new SqlSession
2016-09-06 14:24:15  [ http-nio-8080-exec-2:25453 ] - [ DEBUG ]  SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@50093e1a] was not registered for synchronization because synchronization is not active
2016-09-06 14:24:15  [ http-nio-8080-exec-2:25480 ] - [ DEBUG ]  Fetching JDBC Connection from DataSource
2016-09-06 14:24:15  [ http-nio-8080-exec-2:25905 ] - [ DEBUG ]  JDBC Connection [com.mysql.jdbc.JDBC4Connection@7fd00c6e] will not be managed by Spring
2016-09-06 14:24:15  [ http-nio-8080-exec-2:25926 ] - [ DEBUG ]  ==>  Preparing: SELECT tu.id AS id, tu.`name` AS `name` FROM t_user tu 
2016-09-06 14:24:15  [ http-nio-8080-exec-2:26001 ] - [ DEBUG ]  ==> Parameters: 
2016-09-06 14:24:15  [ http-nio-8080-exec-2:26052 ] - [ DEBUG ]  <==      Total: 3
2016-09-06 14:24:15  [ http-nio-8080-exec-2:26053 ] - [ DEBUG ]  Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@50093e1a]
2016-09-06 14:24:15  [ http-nio-8080-exec-2:26053 ] - [ DEBUG ]  Returning JDBC Connection to DataSource
[User [id=1000, name=张三], User [id=1001, name=李四], User [id=1002, name=王五]]

备注： 1.[User [id=1000, name=张三], User [id=1001, name=李四], User [id=1002, name=王五]] 这行才是代码中 System.out.println(listUser) 打印结果，之因此截出这么多信息，是让阅者从源头理解。 2.截图中信息从 查询数据库(即建立SqlSession)开始、创建数据库链接、查询数据(打印出SQL)、打印返回结果、关闭数据库链接。

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