Spring MVC + Spring + Mybatis3 搭建Web工程原理
可能需要用到參考:
Maven創建web項目:http://blog.csdn.net/liangmaoxuan/article/details/54172426
項目例子下載地址:http://download.csdn.net/detail/liangmaoxuan/9747471Mybatis逆向工程:http://blog.csdn.net/liangmaoxuan/article/details/54563615
引入的jar包:
包也需要搭配正確,少包或錯誤版本包搭配也會出現未知的錯誤,會讓人糾結死,網上也有很多同類型的包自己選擇版本
<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/maven-v4_0_0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.lmx.ptest</groupId><artifactId>ptest</artifactId><packaging>war</packaging><version>0.0.1-SNAPSHOT</version><name>ptest Maven Webapp</name><url>http://maven.apache.org</url><properties><!-- spring版本號 --><spring.version>4.0.2.RELEASE</spring.version><!-- mybatis版本號 --><mybatis.version>3.2.6</mybatis.version><!-- log4j日志文件管理包版本 --><slf4j.version>1.7.7</slf4j.version><log4j.version>1.2.17</log4j.version></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version><!-- 表示開發的時候引入,發布的時候不會加載此包 --><scope>test</scope></dependency><!-- spring核心包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-oxm</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>${spring.version}</version></dependency><!-- mybatis核心包 --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>${mybatis.version}</version></dependency><!-- mybatis/spring包 --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.2.2</version></dependency><!-- 導入java ee jar 包 --><dependency><groupId>javax</groupId><artifactId>javaee-api</artifactId><version>7.0</version></dependency><!-- 導入Mysql數據庫鏈接jar包 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.25</version></dependency><!-- 導入dbcp的jar包,用來在applicationContext.xml中配置數據庫 --><dependency><groupId>commons-dbcp</groupId><artifactId>commons-dbcp</artifactId><version>1.2.2</version></dependency><!-- JSTL標簽類 --><dependency><groupId>jstl</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><!-- 日志文件管理包 --><!-- log start --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>${log4j.version}</version></dependency><!-- 格式化對象,方便輸出日志 --><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.1.41</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>${slf4j.version}</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>${slf4j.version}</version></dependency><!-- log end --><!-- 映入JSON --><dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-mapper-asl</artifactId><version>1.9.13</version></dependency><!-- 上傳組件包 --><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.3.1</version></dependency><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.4</version></dependency><dependency><groupId>commons-codec</groupId><artifactId>commons-codec</artifactId><version>1.9</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-core</artifactId><version>2.7.8</version></dependency><dependency><groupId>org.mockito</groupId><artifactId>mockito-all</artifactId><version>1.10.19</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version></dependency></dependencies><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>2.3.2</version><configuration><source>1.7</source><target>1.7</target></configuration></plugin></plugins><finalName>ptest</finalName></build>
</project>
1.設置web.xml
(1)spring 方面:
spring 啟動時候會首先去執行放在WEB-INF/目錄下applicationContext.xml文件(如果在web.xml中不寫任何參數配置信息,默認的路徑是"/WEB-INF/applicationContext.xml),在啟動Web 容器時,自動裝配Spring applicationContext.xml 的配置信息。
PS:
WEB-INF目錄下創建的xml文件的名稱必須是applicationContext.xml。如果是要自定義文件名可以在web.xml里加入contextConfigLocation這個context參數,多個相同前綴也可以使用通配符(*).
ContextLoaderListener的作用就是啟動Web容器時,自動裝配ApplicationContext的配置信息。系統啟動的時候,系統自動加載org.springframework.web.context.ContextLoaderListener這個類,然后由它負責創建Spring容器即WebApplicationContext,系統會把bean放在其中,保存在內存,需要時候就會取出,一般情況下,創建完成后,負責IOC操作,你不需要獲取它,如果非要在程序中調用它,可以通過WebApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext);來獲取這個容器。
<!-- Spring監聽器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener>
<!-- Spring和mybatis的配置文件 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mybatis.xml</param-value> </context-param>
(2)spring MVC方面:
容器初始化時候一同初始化Servlet,并且監聽指定入口(/,*.do,*.action等),監聽被激活時候,進入spring MVC處理并且返回輸出
<!-- Spring MVC servlet --> <servlet> <servlet-name>SpringMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param><!-- 對應的XML文件 --> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> <!-- 初始化時候啟動 --> <load-on-startup>1</load-on-startup> <async-supported>true</async-supported> </servlet> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>
2.設置XML
(1)Spring 對應的spring-mybatis.xml文件設置
<?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:p="http://www.springframework.org/schema/p"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-3.1.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-4.0.xsd"><!--會對base-package包或者子包下的所有的進行java類進行掃描,并把匹配的java類注冊成bean。 --><context:component-scan base-package="com.lmx" /><!-- 開啟注解模式 PS:要使用spring mvc中的@Controller注解,就必須要配置<mvc:annotation-driven />, 否則org.springframework.web.servlet.DispatcherServlet無法找到控制器并把請求分發到控制器 --><mvc:annotation-driven /><!-- 通過把對應值發射進入class類內組建dataSource對象 以下只需通過ID反射調用傳送對象 --><bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"destroy-method="close"><property name="driverClassName" value="com.mysql.jdbc.Driver" /><property name="url" value="jdbc:mysql://localhost:3306/netcare_db" /><property name="username" value="root" /><property name="password" value="" /></bean><!-- 通過把對應值發射進入class類內組建datsqlSessionFactory對象 以下只需通過ID反射調用傳送對象 --><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource" /><property name="mapperLocations" value="classpath:mapping/*.xml"></property></bean><!-- MapperScannerConfigurer 自動掃描 將Mapper接口生成代理注入到Spring --><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="basePackage" value="com.lmx"></property><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property></bean><!-- 創建sqlSessionTemplate類 --><bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate"><constructor-arg index="0" ref="sqlSessionFactory" /></bean><!-- 創建事務 --><bean id="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource" /></bean></beans>
(1)Spring 對應的spring-MVC.xml文件設置
<?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:p="http://www.springframework.org/schema/p" 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-3.1.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-4.0.xsd"> <!--避免IE執行AJAX時,返回JSON出現下載文件 --> <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> </list> </property> </bean> <!-- 啟動SpringMVC的注解功能,完成請求和注解POJO的映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON轉換器 --> </list> </property> </bean> <!-- 定義跳轉的文件的前后綴 ,視圖模式配置--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 這里的配置我的理解是自動給后面action的方法return的字符串加上前綴和后綴,變成一個 可用的url地址 --> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
到這里配置已經完成。
總結不好多多擔待,文章只單純個人總結,如不好勿噴,技術有限,有錯漏麻煩指正提出。本人QQ:373965070
版权声明:本站所有资料均为网友推荐收集整理而来,仅供学习和研究交流使用。
工作时间:8:00-18:00
客服电话
电子邮件
admin@qq.com
扫码二维码
获取最新动态