1. 准备环境
1. 所需jar包
- 数据库驱动包
- mybatis jars
- mybatis和spring的整合包
- log4j包
- 数据库连接池包 dbcp
- spring包
- jstl
- junit
- aspectjweaver.jar
- commons-pool2-2.4.2
2. 工程结构
2. dao层
1. sqlMapConfig.xml
代码语言:javascript
复制<?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>
<!-- 全局settings配置,根据需要添加 -->
<!-- 配置别名 -->
<typeAliases>
<!-- 批量扫描别名 -->
<package name="com.swxc.ssm.po" />
</typeAliases>
<!-- 配置mapper
由于使用spring和mybatis的整合包进行mapper扫描,所以这里不需要配置。
必须遵循mapper.xml和mapper.java问价同名并在同一目录。
-->
</configuration>
2. applicationContext-dao.xml
- 配置:SqlSessionFactory、数据源、mapper扫描器
代码语言:javascript
复制<?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"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:cache="http://www.springframework.org/schema/cache"
xmlns:context.="http://www.springframework.org/schema/util"
xsi:schemaLocation="
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.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.xsd
http://www.springframework.org/schema/jdbc
http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache-3.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util.xsd">
<!-- 加载db.properties中的内容,db.properties的key命名要有一定的特殊规则。 -->
<context:property-placeholder location="classpath:db.properties" />
<!-- 配置数据源,dbcp -->
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" 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}" />
<property name="maxTotal" value="30" />
<property name="maxIdle" value="5" />
</bean>
<!-- sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 数据库连接池 -->
<property name="dataSource" ref="dataSource" />
<!-- 记载mybatis全局配置文件 -->
<property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml" />
</bean>
<!-- mapper扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 扫描包路径,如果需要扫描多个,中间使用半角 -->
<property name="basePackage" value="com.swxc.ssm.mapper" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
</beans>
3. 逆向工程(generatorSqlmapCustom)生成po类以及mapper(单标增删改查)
4. 手动定义商品查询mapper
- 针对综合查询mapper,一般情况会有关联查询,所以建议自定义mapper。
- ItemsMapperCustom.xml
代码语言:javascript
复制<?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.swxc.ssm.mapper.ItemsMapperCustom">
<!-- 定义商品查询的sql片段 -->
<sql id="query_items_where">
<!-- 使用动态sql,通过if判断,满足条件进行sql拼接
商品的查询条件通过ItemsQueryVo包装对象中的itemsCustom属性传递。-->
<if test="itemsCustom != null">
<if test="ItemsCustom.name != none and itemsCustom.name != ''">
name like '%${itemsCustom.name}%'
</if>
</if>
</sql>
<!-- 商品列表查询 -->
<!-- 建议parameterType传入包装对象-->
<select id="findItemsList" parameterType="com.swxc.ssm.po.ItemsQueryVo" resultType="com.swxc.ssm.po.ItemsCustom">
select * from items
<where>
<include refid="query_items_where" />
</where>
</select>
</mapper>
代码语言:javascript
复制package com.swxc.ssm.mapper;
import com.swxc.ssm.po.ItemsCustom;
import com.swxc.ssm.po.ItemsQueryVo;
import java.util.List;
/**
* Description
* Author shadowolf
* Date 2017/7/26. 3:47
* Version 1.0
*/
public interface ItemsMapperCustom {
public List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo) throws Exception;
}
3. service层
1. 定义service 接口
代码语言:javascript
复制package com.swxc.ssm.service;
import com.swxc.ssm.po.ItemsCustom;
import com.swxc.ssm.po.ItemsQueryVo;
import java.util.List;
/**
* Description 商品管理service
* Author shadowolf
* Date 2017/7/26. 8:32
* Version 1.0
*/
public interface ItemsService {
// 商品查询列表
public List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo) throws Exception;
}
代码语言:javascript
复制package com.swxc.ssm.service.impl;
import com.swxc.ssm.mapper.ItemsMapperCustom;
import com.swxc.ssm.po.ItemsCustom;
import com.swxc.ssm.po.ItemsQueryVo;
import com.swxc.ssm.service.ItemsService;
import org.springframework.beans.factory.annotation.Autowired;
import java.util.List;
/**
* Description 商品管理
* Author shadowolf
* Date 2017/7/26. 9:22
* Version 1.0
*/
public class ItemsServiceImpl implements ItemsService {
@Autowired
private ItemsMapperCustom itemsMapperCustom;
@Override
public List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo) throws Exception {
// 通过ItemsMapperCustom查询数据库
return itemsMapperCustom.findItemsList(itemsQueryVo);
}
}
2. 在spring容器中配置service
- 创建applicationContext-service.xml,文件中配置service。
代码语言:javascript
复制<?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"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:cache="http://www.springframework.org/schema/cache"
xmlns:context.="http://www.springframework.org/schema/util"
xsi:schemaLocation="
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.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.xsd
http://www.springframework.org/schema/jdbc
http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache-3.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util.xsd">
<!-- 商品管理的service -->
<bean id="itemsService" class="com.swxc.ssm.service.impl.ItemsServiceImpl" />
</beans>
3. 事务控制(applicationContext-transaction.xml)
- 在applicationContext-transaction.xml中,使用spring声明式事务控制方法。
代码语言:javascript
复制<?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"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:cache="http://www.springframework.org/schema/cache"
xmlns:context.="http://www.springframework.org/schema/util"
xsi:schemaLocation="
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.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.xsd
http://www.springframework.org/schema/jdbc
http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache-3.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util.xsd">
<!-- 事务管理器
对mybatis操作数据库的事务控制,spring使用jdbc的事务控制
-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 数据源
dataSource在application-dao.xml中配置
-->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 传播行为 -->
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="insert*" 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="select*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- aop -->
<aop:config>
<!-- pointcut:切点,com.swxc.ssm.service.impl下的所有类的下的所有方法,不限制传入参数 -->
<aop:advisor advice-ref="txAdvice" pointcut="execution(* com.swxc.ssm.service.impl.*.*(..))" />
</aop:config>
</beans>
4. springmvc
1. 配置springmvc.xml
- 创建springmvc文件,配置处理器映射器、适配器、视图解析器。
代码语言:javascript
复制<?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:p="http://www.springframework.org/schema/p"
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-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- 可以扫描controller、service、......
这里让扫描controller,指定controller的包
-->
<context:component-scan base-package="com.swxc.ssm.controller" />
<!-- 使用mvc:annotation-driven可以代替注解映射器和注解适配器的配置
mvc:annotation-driven默认加载很多的参数绑定方法,比如json转换解析器就默认加载了,
如果使用mvc:annotation-driven,不用配置RequestMappingHandlerMapping和RequestMappingHandlerAdapter
实际开发使用mvc:annotation-driven
-->
<mvc:annotation-driven />
<!-- 视图解析器
解析jsp视图,默认使用jstl标签,classpath下必须有jstl包
-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 配置jsp路径的前缀和后缀 -->
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
2. 配置前端控制器(web.xml)
代码语言:javascript
复制<!-- 前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- contextConfigLocation配置springmvc加载的配置文件(配置处理器映射器、适配器等等)
如果不配置contextConfigLocation,默认加载的是/WEB-INF/servlet名称-servlet.xml(springmvc-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>
<!--
第一种:*.action 访问以.action结尾由DispatcherServlet进行解析。
第二种:/ 所有访问的地址都由DispatcherServlet进行解析,对于静态文件的解析需要配置不让DispatcherServlet进行解析
使用此种方法,可以实现RESTful风格。
第三种:/* 这样配置不对。使用这种配置,最终要转发到一个jsp页面时,仍然会由DispatcherServlet解析jsp页面,
不能根据jsp页面找到handler,会报错。
-->
<url-pattern>*.action</url-pattern>
</servlet-mapping>
3. 编写Controller(就是Handler)
代码语言:javascript
复制package com.swxc.ssm.controller;
import com.swxc.ssm.po.ItemsCustom;
import com.swxc.ssm.service.ItemsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import java.util.List;
/**
* Description 商品的Controller
* Author shadowolf
* Date 2017/7/26. 11:20
* Version 1.0
*/
@Controller
public class ItemsController {
@Autowired
private ItemsService itemsService;
// 商品的查询
@RequestMapping("/queryItems")
public ModelAndView queryItems() throws Exception {
List<ItemsCustom> itemsList = itemsService.findItemsList(null);
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("itemsList", itemsList);
modelAndView.setViewName("items/itemsList");
return modelAndView;
}
}
5. 编写jsp页面
- WEB-INF/jsp/itemsList.jsp
代码语言:javascript
复制<%@ 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>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>查询商品列表</title>
</head>
<body>
<form action="${pageContext.request.contextPath }/item/queryItem.action" method="post">
查询条件:
<table width="100%" border="1">
<tr>
<td><input type="submit" value="查询" /></td>
</tr>
</table>
商品列表:
<table width="100%" border="1">
<tr>
<td>商品名称</td>
<td>商品价值</td>
<td>生产日期</td>
<td>商品描述</td>
<td>操作</td>
</tr>
<c:forEach items="${itemsList }" var="item">
<tr>
<td>${item.name }</td>
<td>${item.price }</td>
<td><fmt:formatDate value="${item.createTime }" pattern="yyyy-MM-dd HH:mm:ss" /> </td>
<td>${item.detail }</td>
<td>
<a href="${pageContext.request.contextPath}/item/editItem.action?id=${item.id}">修改</a>
</td>
</tr>
</c:forEach>
</table>
</form>
</body>
</html>
5. 加载spring容器
- 将mapper、service、controller加载到spring容器中。(以下文件)
- mapper使用了扫描器
- service使用了声明式的配置方式
- controller使用了组件扫描
- 建议使用通配符来加载上边的配置文件
- 方法:
- 在web.xml中,添加spring容器的监听器,加载spring容器。
代码语言:javascript
复制<!-- 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>