spring+springMVC+ibatis基本配置檔案
阿新 • • 發佈:2018-11-28
1.建立動態web程式,並且修改編譯路徑改為WEB-INFO目錄下
buildpath->source標籤 中修改
2.新增所有jar包在lib目錄下方,並且在buildpath中也新增。防止lib中的jar包出現錯誤
3.建立mvc.xml和ibatis的配置檔案
mvc.xml中對一個controller的註解進行掃描,並且配置springmvc的檢視渲染
<!-- SpringMVC配置 -->
<!-- 通過component-scan 讓Spring掃描org.swinglife.controller下的所有的類,讓Spring的程式碼註解生效 -- >
<context:component-scan base-package="controller"></context:component-scan>
<!-- 配置SpringMVC的檢視渲染器, 讓其字首為:/ 字尾為.jsp 將檢視渲染到/page/<method返回值>.jsp中 -->
<beans:bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/page/" p:suffix=".jsp" >
</beans:bean>
SqlMapConfig.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN" "http://www.ibatis.com/dtd/sql-map-config-2.dtd">
<sqlMapConfig>
<sqlMap resource="sqlMap_User.xml" /> //載入對映檔案
</sqlMapConfig>
對映檔案
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMap PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN" "http://www.ibatis.com/dtd/sql-map-2.dtd">
<sqlMap namespace="Test">
//寫自己的sql操作
<statement id="select_all_user"
resultClass="com.lu.pojo.User">
select * from user
where is_delete = 0
order by id
</statement>
</sqlMap>
4.建立spring的root-context.xml
建立spring的datasource,而不使用ibatis的datasource,將連線資料庫的驅動資訊等放入db.properties內,在spring的配置檔案中讀取。
spring的service層註解配置在當前配置檔案中
<!--載入配置檔案 -->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" id="propertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:db.properties</value>
</list>
</property>
</bean>
<!-- 建立spring的datasource -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${driver}"></property>
<property name="url" value="${url}"></property>
<property name="username" value="${username}"></property>
<property name="password" value="${password}"></property>
</bean>
連線資料庫檔案db.properties:
driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/ibatis_demo?characterEncoding=utf8
username=root
password=root
總的spring配置檔案如下:
<?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:jaxws="http://cxf.apache.org/jaxws"
xsi:schemaLocation="http://cxf.apache.org/jaxws
http://cxf.apache.org/schemas/jaxws.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://cxf.apache.org/jaxws
http://cxf.apache.org/schemas/jaxws.xsd">
<!-- Root Context: defines shared resources visible to all other web components -->
<context:component-scan base-package="serviceimpl"></context:component-scan>
<context:component-scan base-package="ws"></context:component-scan>
<!--載入配置檔案 -->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" id="propertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:db.properties</value>
</list>
</property>
</bean>
<!-- 建立spring的datasource -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${driver}"></property>
<property name="url" value="${url}"></property>
<property name="username" value="${username}"></property>
<property name="password" value="${password}"></property>
</bean>
<!-- spring載入ibatis的配置檔案 -->
<bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
<property name="configLocation" value="classpath:SqlMapConfig.xml"></property>
<property name="dataSource" ref="dataSource"></property>
</bean>
<bean class="org.springframework.orm.ibatis.SqlMapClientTemplate" id="sqlMapClientTemplate">
<property name="sqlMapClient" ref="sqlMapClient"></property>
</bean>
</beans>
5.修改web.xml
需要在web.xml中配置mvc的DispatcherServlet攔截相應的請求
<!-- 配置Spring MVC DispatcherServlet -->
<servlet>
<servlet-name>MVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 初始化引數 -->
<init-param>
<!-- 載入SpringMVC的xml到 spring的上下文容器中 -->
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:mvc.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 配置DispatcherServlet所需要攔截的 url -->
<servlet-mapping>
<servlet-name>MVC</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
第二步配置spring配置檔案的路徑
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:root-context.xml</param-value>
</context-param>
第三步配置監聽,監聽spring上下文容器
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
總的web.xml如下:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>springMVC_firstdemo_20181123</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<!-- 監聽spring上下文容器 -->
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<!-- 載入spring的xml配置檔案到 spring的上下文容器中 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:root-context.xml</param-value>
</context-param>
<!-- 配置Spring MVC DispatcherServlet -->
<servlet>
<servlet-name>MVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 初始化引數 -->
<init-param>
<!-- 載入SpringMVC的xml到 spring的上下文容器中 -->
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:mvc.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 配置DispatcherServlet所需要攔截的 url -->
<servlet-mapping>
<servlet-name>MVC</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
6.spring中常使用的註解
@Controller 配置在mvc的配置檔案中
@Service 配置在service層類上
引數注入註解能使用三種
//三種注入bean的方法
1.Resource 按變數名字注入和bean的名字一樣
2.Autowire 自動注入,依據變數型別將 bean注入,但是同種型別只能有一種
3.Qulifira(”注入bean的名字”)