ssm框架简单搭建-1

java开发快三年了，没怎么写过博客，第一次发布文章，多多关照。

本文章主要是针对稍微有点java基础的童鞋参考，如有问题，欢迎指正，共同进步

1.首先看下项目整个目录吧。如图所示：

2.我认为框架最重要的就是配置文件了。下面是项目的入口，web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
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">
<display-name>springMybatis</display-name>
<!-- 配置监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 初始化配置文件在这配置 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc/spring-servlet.xml</param-value>
</context-param>
<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:springmvc/spring-servlet.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>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<!-- encoding filter for jsp page -->
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

3.然后看配置文件spring-servlet.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:context="http://www.springframework.org/schema/context"
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-3.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">

<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath*:springmvc/db.properties</value>
</list>
</property>
</bean>
<!-- dataSource 配置 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
<!-- 基本属性 url、user、password -->

<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<!-- 开启注解 -->
<mvc:annotation-driven/>
<!-- 设置组件扫描的基础包 -->
<context:component-scan base-package="com.cyh.fqxg"/>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!-- <property name="configLocation" value="classpath:mybatis/mappings/*.xml"></property> -->
<property name="mapperLocations" value="classpath:*/mappings/*.xml"/>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.cyh.fqxg.*"/>
</bean>
<!-- 配置视图解析器 -->
<bean class = "org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/" />
<property name="suffix" value=".jsp" />
</bean>
<mvc:resources location="/img/" mapping="/img/**"></mvc:resources>
<mvc:resources location="/js/" mapping="/js/**"></mvc:resources>
<mvc:resources location="/cs/" mapping="/cs/**"></mvc:resources>
</beans>

4.数据库信息

jdbc.driver=oracle.jdbc.OracleDriver
jdbc.url=jdbc:oracle:thin:@localhost:1521:orcl
jdbc.username=scott
jdbc.password=tiger

 5.controller

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.cyh.fqxg.money.service.serviceImpl.MoneyServiceImpl;
@Controller
@RequestMapping("money")
public class MoneyController {
@Autowired
private MoneyServiceImpl moneyServiceImpl;
@RequestMapping("/getTotalMoney")
public String getTotalMoney(HttpServletRequest request){
String personName = request.getParameter("personName");
int money =moneyServiceImpl.getTotalMoney(personName);

System.out.println("123"+money);
return "page/money/showMoney";
}
}

6本次链接数据库用的是Mapper形式，DAo只有接口没有实现，用方法名字直接映射到mybatis的配置文件。

public interface MoneyMapper {

public void getTotalMoney(String person);
}

<?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.cyh.fqxg.money.mapper.MoneyMapper">

<select id="getTotalMoney" resultType="java.lang.String" >
select 'X' from dual
</select>

</mapper>