SSM框架集成环境搭建

SSM(Spring+Spring MVC+Mybatis)是目前比较流行的Java EE企业级框架。

Spring

一个轻量级的控制反转(IOC)和面向切面(AOP)的容器框架。

关于控制反转和面向切面，网上有很多讲解的文章，感觉以下两篇算是比较通俗易懂的：

控制反转：
博客地址：http://blog.csdn.net/icarus_wang/article/details/51457866

面向切面：
博客地址：https://www.zhihu.com/question/24863332

Spring MVC

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，这样分离让他们更容易进行控制。

Mybatis

一个基于Java的持久层框架，它使用简单的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。

基本环境

数据库：MySQL
IDE：IDEA
JDK：1.8
Maven

jar 包依赖添加

<?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.shsxt</groupId>
  <artifactId>ssm</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>ssm Maven Webapp</name>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <!-- spring 核心jar -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>

    <!-- spring 测试jar -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>

    <!-- spring jdbc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>

    <!-- spring事物 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>

    <!-- aspectj切面编程的jar -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.9</version>
    </dependency>


    <!-- c3p0 连接池 -->
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>

    <!-- mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.1</version>
    </dependency>

    <!-- 添加mybatis与Spring整合的核心包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>
    <!-- mysql 驱动包 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.39</version>
    </dependency>

    <!-- 日志打印相关的jar -->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.2</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.7.2</version>
    </dependency>

    <!-- 分页插件配置 -->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>4.1.0</version>
    </dependency>

    <!-- spring web -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>

    <!-- spring mvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>

    <!-- web servlet -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.0.1</version>
    </dependency>

    <!-- 添加json 依赖jar包 -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.7.0</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.7.0</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.7.0</version>
    </dependency>

    <!-- 文件上传包依赖 -->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.2</version>
    </dependency>

  </dependencies>
  <build>
    <finalName>ssm</finalName>
    <resources>
      <resource>
        <directory>src/main/resources</directory>
      </resource>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
          <include>**/*.properties</include>
          <include>**/*.tld</include>
        </includes>
        <filtering>false</filtering>
      </resource>
    </resources>


    <plugins>
      <plugin>
        <groupId>org.mybatis.generator</groupId>
        <artifactId>mybatis-generator-maven-plugin</artifactId>
        <version>1.3.2</version>
        <configuration>
          <configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
          <verbose>true</verbose>
          <overwrite>true</overwrite>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.2</version>
          </dependency>
        </dependencies>
      </plugin>

      <!-- 配置jetty插件 -->
      <plugin>
        <groupId>org.mortbay.jetty</groupId>
        <artifactId>maven-jetty-plugin</artifactId>
        <version>6.1.21</version>
        <configuration>
          <scanIntervalSeconds>10</scanIntervalSeconds>
          <contextPath>/ssm</contextPath>
        </configuration>
      </plugin>

    </plugins>

  </build>
</project>

web.xml文件配置

<?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_3_0.xsd"
         id="WebApp_ID" version="3.0">
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <filter>
    <description>char encoding filter</description>
    <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>
  <servlet>
    <servlet-name>springMvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:servlet-context.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>
</web-app>

spring.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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
    <!-- 扫描基本包 过滤 controller 层 -->
    <context:component-scan base-package="com.shy">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!-- 加载 properties 配置文件 -->
    <context:property-placeholder location="classpath:db.properties"/>
    <aop:aspectj-autoproxy/><!-- aop -->
    <!-- 配置 c3p0 数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"></property>
        <property name="jdbcUrl" value="${jdbc.url}"></property>
        <property name="user" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>
    <!-- 配置事务管理器 -->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- 设置事物增强 -->
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="query*" read-only="true"/>
            <tx:method name="load*" read-only="true"/>
            <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:attributes>
    </tx:advice>
    <!-- aop 切面配置 -->
    <aop:config>
        <aop:pointcut id="servicePointcut" expression="execution(* com.shy.service..*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="servicePointcut"/>
    </aop:config>
    <!-- 配置 sqlSessionFactory -->
    <bean id="sqlSessionFactory"
          class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="configLocation" value="classpath:mybatis.xml"/>
        <property name="mapperLocations" value="classpath:com/shy/mapper/*.xml"/>
    </bean>

    <!-- 配置扫描器 -->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 扫描 com.shy.dao 这个包以及它的子包下的所有映射接口类 -->
        <property name="basePackage" value="com.shy.dao"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"
        />
    </bean>
</beans>

Spring MVC配置文件servlet-context.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/mvc
 http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
 http://www.springframework.org/schema/beans
 http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
 http://www.springframework.org/schema/context
 http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <!-- 扫描 com.shsxt.controller 下包 -->
    <context:component-scan base-package="com.shy.controller"/>
    <!-- mvc 请求映射处理器与适配器 -->
    <mvc:annotation-driven/>
    <!--配置视图解析器 默认的视图解析器- -->
    <bean id="defaultViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="contentType" value="text/html"/>
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
    <!-- json 支持 -->
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
    </bean>
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <property name="messageConverters">
            <list>
                <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
            </list>
        </property>
    </bean>
    <!-- 文件上传配置 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize">
            <value>104857600</value>
        </property>
        <property name="maxInMemorySize">
            <value>4096</value>
        </property>
    </bean>
</beans>

Mybatis配置文件mybatis.xml

<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
    <!-- po 包扫描 -->
    <typeAliases>
        <package name="com.shy.po" />
    </typeAliases>

    <plugins>
        <!-- com.github.pagehelper为PageHelper类所在包名 -->
        <plugin interceptor="com.github.pagehelper.PageHelper">
            <property name="dialect" value="mysql" />
            <!-- 该参数默认为false -->
            <!-- 设置为true时，会将RowBounds第一个参数offset当成pageNum页码使用 -->
            <!-- 和startPage中的pageNum效果一样 -->
            <property name="offsetAsPageNum" value="true" />
            <!-- 该参数默认为false -->
            <!-- 设置为true时，使用RowBounds分页会进行count查询 -->
            <property name="rowBoundsWithCount" value="true" />
            <!-- 设置为true时，如果pageSize=0或者RowBounds.limit = 0就会查询出全部的结果 -->
            <!-- （相当于没有执行分页查询，但是返回结果仍然是Page类型） -->
            <property name="pageSizeZero" value="true" />
            <!-- 3.3.0版本可用 - 分页参数合理化，默认false禁用 -->
            <!-- 启用合理化时，如果pageNum<1会查询第一页，如果pageNum>pages会查询最后一页 -->
            <!-- 禁用合理化时，如果pageNum<1或pageNum>pages会返回空数据 -->
            <property name="reasonable" value="true" />
            <!-- 3.5.0版本可用 - 为了支持startPage(Object params)方法 -->
            <!-- 增加了一个`params`参数来配置参数映射，用于从Map或ServletRequest中取值 -->
            <!-- 可以配置pageNum,pageSize,count,pageSizeZero,reasonable,不配置映射的用默认值 -->
            <property name="params" value="pageNum=start;pageSize=limit;pageSizeZero=zero;reasonable=heli;count=countsql" />
        </plugin>
    </plugins>

</configuration>

MySQL配置文件db.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

log4j

# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

代码生成器配置文件generatorConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
    <!--数据库驱动-->
    <classPathEntry    location="D:/develop/m2/repository/mysql/mysql-connector-java/5.1.39/mysql-connector-java-5.1.39.jar"/>
    <context id="DB2Tables"    targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="true"/>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>
        <!--数据库链接地址账号密码-->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://127.0.0.1:3306/mybatis" userId="root" password="123456">
        </jdbcConnection>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!--生成Model类存放位置-->
        <javaModelGenerator targetPackage="com.shy.po" targetProject="D:\develop\IdeaProjects\ssm\src\main\java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        <!--生成映射文件存放位置-->
        <sqlMapGenerator targetPackage="com.shy.mapper" targetProject="D:\develop\IdeaProjects\ssm\src\main\java">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <!--生成Dao类存放位置-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.shy.dao" targetProject="D:\develop\IdeaProjects\ssm\src\main\java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>


        <table tableName="user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
    </context>
</generatorConfiguration>

附加：基础的base包

BaseQuery

package com.shy.base;

public class BaseQuery {
    /**
     * 分页页码
     */
    private int pageNum=1;
    
    /**
     * 每页记录数
     */
    private int pageSize=10;

    public int getPageNum() {
        return pageNum;
    }

    public void setPageNum(int pageNum) {
        this.pageNum = pageNum;
    }

    public int getPageSize() {
        return pageSize;
    }

    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }
}

BaseMapper

package com.shy.base;

import org.springframework.dao.DataAccessException;

import java.util.List;
import java.util.Map;

public interface BaseMapper<T> {
    /**
     * 添加记录不返回主键
     * @param entity
     * @return
     * @throws DataAccessException
     */
    public int insert(T entity) throws DataAccessException;
    /**
     * 批量添加记录
     * @param entities
     * @return
     * @throws DataAccessException
     */
    public int insertBatch(List<T> entities) throws DataAccessException;
    /**
     * 查询总记录数
     * @param map
     * @return
     */
    @SuppressWarnings("rawtypes")
    public int queryCountByParams(Map map) throws DataAccessException;
    /**
     * 查询记录 通过id
     * @param id
     * @return
     */
    public T queryById(Integer id) throws DataAccessException;

    /**
     * 分页查询记录
     * @param baseQuery
     * @return
     */
    public List<T> queryForPage(BaseQuery baseQuery) throws DataAccessException;
    /**
     * 查询记录不带分页情况
     * @param map
     * @return
     */
    @SuppressWarnings("rawtypes")
    public List<T> queryByParams(Map map) throws DataAccessException;

    /**
     * 更新记录
     * @param entity
     * @return
     */
    public int update(T entity) throws DataAccessException;

    /**
     * 批量更新
     * @param map
     * @return
     * @throws DataAccessException
     */
    public int updateBatch(Map map) throws DataAccessException;

    /**
     * 删除记录
     * @param id
     * @return
     */
    public int delete(Integer id) throws DataAccessException;

    /**
     * 批量删除
     * @param ids
     * @return
     */
    public int deleteBatch(int[] ids) throws DataAccessException;
}

BaseService

package com.shy.base;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.List;
import java.util.Map;

public abstract class BaseService<T> {
    @Autowired
    public BaseMapper <T> baseMapper;
    
    /**
     * 添加记录
     * @param entity
     * @return
     * @throws Exception
     */
    public int insert(T entity) throws Exception{
        int result= baseMapper.insert(entity);
        return result;
    }
    
    /**
     * 批量添加记录
     * @param entities
     * @return
     * @throws Exception
     */
    public int insertBatch(List<T> entities) throws Exception{
        return baseMapper.insertBatch(entities);
    }
    
    /**
     * 根据参数统计记录数
     * @param map
     * @return
     * @throws Exception
     */
    @SuppressWarnings("rawtypes")
    public int queryCountByParams(Map map)throws Exception{
        return baseMapper.queryCountByParams(map);
    }
  
    /**
     * 查询记录通过id
     * @param id
     * @return
     * @throws Exception
     */
    public T queryById(Integer id)throws Exception{
        AssertUtil.isNull(id, "记录id非空!");
        return baseMapper.queryById(id);
    }
    
    /**
     * 分页查询
     * @param baseQuery
     * @return
     * @throws Exception
     */
    public PageInfo<T> queryForPage(BaseQuery baseQuery)throws Exception{
        PageHelper.startPage(baseQuery.getPageNum(),baseQuery.getPageSize());
        List<T> list= baseMapper.queryForPage(baseQuery);       
        PageInfo<T> pageInfo=new PageInfo<T>(list);
        return pageInfo;        
    }
  
    /**
     * 
     * @param map
     * @return
     * @throws Exception
     */
    @SuppressWarnings("rawtypes")
    public List<T> queryByParams(Map map)throws Exception{  
        return baseMapper.queryByParams(map);  
    }
  
    /**
     * 查询记录
     * @param entity
     * @return
     * @throws Exception
     */
    public int update(T entity)throws Exception{
        return baseMapper.update(entity);
    }
 
    /**
     * 批量更新
     * @param map
     * @return
     * @throws Exception
     */
    @SuppressWarnings("rawtypes")
    public int updateBatch(Map map) throws Exception{
        return baseMapper.updateBatch(map);
    }
    
    /**
     * 删除记录
     * @param id
     * @return
     * @throws Exception
     */
    public int delete(Integer id) throws Exception{
        // 判断 空
        AssertUtil.isNull(id, "记录id非空！");
        AssertUtil.isNull(queryById(id), "待删除的记录不存在!");
        return  baseMapper.delete(id);
    }
    
    /**
     * 批量删除
     * @param ids
     * @return
     */
    public int deleteBatch(int[] ids) throws Exception{
        AssertUtil.isNull(ids.length==0,"请至少选择一项记录!");
        return  baseMapper.deleteBatch(ids);
    }
}

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