ssm框架搭建和整合流程
Spring + SpringMVC + Mybatis整合流程
1 需求
1.1 客户列表查询
1.2 根据客户姓名模糊查询
2 整合思路
第一步:整合dao层
Mybatis和spring整合,通过spring管理mapper接口,使用mapper扫描器自动扫描mapper接口,并在spring中进行注册。
第二步:整合service层
通过spring管理service层,service调用mapper接口。使用配置方式将service接口配置在spring配置文件中,并且进行事务控制。
第三步:整合springMVC
由于springMVC是spring的模块,不需要整合。
3 准备环境
3.1 数据库版本
mysql5.7
3.2
编译器
eclipse
3.3 Jar 包
3.3.1 spring的jar包
3.3.2 spring与mybatis的整合jar包
3.3.3 mybatis的jar包
3.3.4 数据库驱动包
3.3.5 log4j包
3.3.6 log4j配置文件
### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.err
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
### direct messages to file mylog.log ###
log4j.appender.file=org.apache.log4j.FileAppender
log4j.appender.file.File=c:\mylog.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
### set log levels - for more verbose logging change 'info' to 'debug' ###
log4j.rootLogger=debug, stdout
3.3.7 dbcp数据库连接池包
3.3.8 jstl包
4 整合dao
4.1 sqlMapconfig.xml
mybatis的配置文件:
<?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> <!-- 定义别名 --> <typeAliases> <package name="com.haohan.ssm.po" /> </typeAliases> <!-- 配置mapper映射文件 --> <mappers> <!-- 加载 原始dao使用映射文件 --> <!-- <mapper resource="sqlmap/User.xml" /> -- <!--批量mapper扫描 遵循规则:将mapper.xml和mapper.java文件放在一个目录 且文件名相同 ,现在由spring配置扫描--> <!-- <package name="cn.itcast.ssm.dao.mapper" /> --> </mappers> </configuration>
4.2 db.properties数据库配置文件
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/haohan1?characterEncoding=utf8&useSSL=false jdbc.username=root jdbc.password=123456
4.3 applicationContext-dao.xml
spring在这个xml文件中配置dbcp连接池,sqlSessionFactory,mapper的批量扫描。
<?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.xsd"> <!--1. 数据源 --> <!-- 加载配置文件 --> <context:property-placeholder location="classpath:db.properties"/> <!-- 配置dbcp连接池 --> <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${jdbc.driver}"></property> <property name="url" value="${jdbc.url}"></property> <property name="username" value="${jdbc.name}"></property> <property name="password" value="${jdbc.password}"</property> </bean> <!--2. sqlSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml"></property> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 3. mapper的批量扫描--> <!-- mapper的批量扫描 :从mapper包中扫描mapper接口,自动创建代理对象并且在spring容器中注册。 遵循的规范:需要将mapper的接口类名和mapper.xml映射文件名保持一致,且在一个目录中。 自动扫描出来的mapper的bean的id为mapper类名(首字母小写) --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 指定扫描的包名 如果扫描多个包,用半角逗号分开 --> <property name="basePackage" value="cn.haohan.ssm.mapper"></property> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> </beans>
4.4 逆向工程生成po类和mapper接口和mapper.xml文件
参考:http://how2j.cn/k/mybatis/mybatis-generator/1376.html
生成如下图的文件:
4.5 自定义mapper接口和xml文件,以及po的包装类
4.5.1 CustomMapper.java
public interface CustomMapper { public List<HhCustom> findAllCustom(HhCustomVo hhCustomVo)throws Exception; }
4.5.1 CustomMapper.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"> <!-- namespace:命名空间,作用是对sql进行分类化管理,sql隔离 --> <mapper namespace="cn.haohan.ssm.mapper.CustomMapper"> <sql id="query_custom_where"> <if test="hhCustom!=null"> <if test="hhCustom.name!=null and hhCustom.name!=''"> name like '%${hhCustom.name}%' </if> </if> </sql> <resultMap type="hhCustom" id="hhCustomResultMap"> <id column="id" property="id"/> <result column="phone_number" property="phoneNumber"/> </resultMap> <select id="findAllCustom" parameterType="cn.haohan.ssm.po.HhCustomVo" resultMap="hhCustomResultMap"> SELECT * FROM hh_custom <where> <include refid="query_custom_where"></include> </where> </select> </mapper>
4.5.2 HhCustomVo
//客户的包装类 public class HhCustomVo { //客户信息 private HhCustom hhCustom; public HhCustom getHhCustom() { return hhCustom; } public void setHhCustom(HhCustom hhCustom) { this.hhCustom = hhCustom; } }
4.6 数据库表结构
5 整合service
5.1 定义service接口
public interface CustomService { public HhCustom findCustomById(Integer id)throws Exception; public List<HhCustom> findAllCustom(HhCustomVo hhCustomVo)throws Exception; }
5.2 service接口实现
public class CustomServiceImpl implements CustomService{ @Autowired HhCustomMapper hhCustomMapper; @Autowired CustomMapper customMapper; @Override public HhCustom findCustomById(Integer id) throws Exception { // TODO Auto-generated method stub return hhCustomMapper.selectByPrimaryKey(id); } @Override public List<HhCustom> findAllCustom(HhCustomVo hhCustomVo) throws Exception { // TODO Auto-generated method stub return customMapper.findAllCustom(hhCustomVo); } }
5.3 在spring容器配置service(applicationContext-service)
<?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.xsd"> <bean id="CustomServiceImpl" class="cn.haohan.ssm.service.impl.CustomServiceImpl"></bean> </beans>
5.4 事务控制(applicationContext-transaction)
<?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.xsd"> <!-- 配置事务管理器 对mybatis操作数据库事务控制,spring使用jdbc事务控制类--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 配置数据源 --> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 配置事务增强(通知) --> <tx:advice id="txadvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 设置进行事务操作的方法匹配规则 --> <tx:method name="save*" propagation="REQUIRED"/> <tx:method name="update*" propagation="REQUIRED"/> <tx:method name="insert*" propagation="REQUIRED"/> <tx:method name="delete*" propagation="REQUIRED"/> <tx:method name="find*" propagation="SUPPORTS"/> <tx:method name="get*" propagation="SUPPORTS"/> <tx:method name="select*" propagation="SUPPORTS"/> </tx:attributes> </tx:advice> <!-- aop操作 --> <aop:config> <aop:advisor advice-ref="txadvice" pointcut="execution(* cn.haohan.ssm.serivce.impl.*.*(..))"/> </aop:config> </beans>
6 整合springMVC
6.1 springmvc.xml
在springmvc.xml中配置适配器映射器、适配器处理器、视图解析器
<?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" 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.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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!-- 扫描加载handler --> <context:component-scan base-package="cn.haohan.ssm.controller"></context:component-scan> <!-- 注解映射器 --> <!--<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean> 注解适配器 <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean> --> <!-- 使用mvc:annotation-driven可代替上面的注解映射器和注解适配器mvc:annotation-driven默认加载许多参数绑定,比如json转换解析器,实际开发用mvc:annotation-driven--> <mvc:annotation-driven> </mvc:annotation-driven> <!-- 视图解析器 解析jsp,默认使用jstl标签,--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
6.2 配置前端控制器(web.xml)
<!-- 配置springmvc前端控制器 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <!-- contextConfigLocation:加载springmvc的配置文件(配置处理器适配器、映射器、视图解析器 默认加载的是/WEB-INF/servlet名称-servlet.xml( springmvc-servlet.xml) --> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <!--第一种:*.action ,访问以.action结尾的,由DispatcherServlet解析。 第二种:/ ,所有访问的地址都由DispatcherServlet解析,对于静态文件需要配置不让DispatcherServlet解析。 可以实现Restful风格。 --> <servlet-name>springmvc</servlet-name> <url-pattern>*.action</url-pattern> </servlet-mapping>
6.3 编写controller
@Controller public class CustomController { @Autowired CustomService customService; //模糊查询客户 @RequestMapping("/findAllCustom") public ModelAndView findAllCustom(HhCustomVo hhCustomVo) throws Exception { List<HhCustom> customlist = customService.findAllCustom(hhCustomVo); ModelAndView modelAndView = new ModelAndView(); modelAndView.addObject("customlist", customlist); modelAndView.setViewName("customlist"); return modelAndView; } //根据客户id查询 public ModelAndView findCustomByid(Integer id) throws Exception { HhCustom hhCustom = customService.findCustomById(id); ModelAndView modelAndView = new ModelAndView(); modelAndView.addObject("hhCustom", hhCustom); modelAndView.setViewName("customlist"); return modelAndView; } }
6.4 编写jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>客戶列表</title> </head> <body> <form name="customForm" action="${pageContext.request.contextPath}/findAllCustom.action" method="post"> 查询条件: <table width="100%" border=1> <tr> <td>客戶名称:<input name="hhCustom.name" /> </td> <%-- <td>客戶类型: <select name="customType"> <c:forEach items="${customType}" var="customType"> <option value="${customType.key }">${customType.value}</option> </c:forEach> </select> </td> --%> <td><button type="submit" value="查询" >查询</button></td> </tr> </table> 客戶列表: <table width="100%" border=1> <tr> <th>选择</th> <th>客戶名称</th> <th>客戶邮箱</th> <th>客戶电话</th> <th>客户类型</th> <!-- <th>操作</th> --> </tr> <c:forEach items="${customlist}" var="custom"> <tr> <td><input type="checkbox" name="custom_id" value="${custom.id}" /></td> <td>${custom.name }</td> <td>${custom.mail }</td> <td>${custom.phoneNumber }</td> <td>${custom.category }</td> <%--<td><fmt:formatDate value="${custom.birthday }" pattern="yyyy-MM-dd HH:mm:ss"/></td> <td><a href="${pageContext.request.contextPath }/items/editItems.action?id=${item.id }">修改</a></td> --%> </tr> </c:forEach> </table> </form> </body> </html>
7 加载spring容器(web.xml)
<!-- 加载spring容器 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/applicationContext-*.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener>
8 Post方法中文乱码(web.xml)
<!-- post中文乱码 --> <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> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
9 结果
9.1 客户查询列表
9.2 根据模糊