前言:
本文為小白爬坑指南,主要作用是防止自己失憶 (逃
零:創(chuàng)建Web工程
1.File -> new project -> maven 選擇 mavne-webapp 模板 idea會生成一個(gè)基礎(chǔ)的web工程目錄結(jié)構(gòu)
2.在pom文件中增加相應(yīng)的依賴包
壹:集成SpringMVC
在web.xml 中引入 SpringMVC
<!--Spring MVC 配置-->
<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:applicationContext-mvc.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>
SpringMVC 配置如下:
1.開啟掃描,指定掃描目錄
指定目錄到Controller包的目的是預(yù)防SpringMVC和Spring掃描沖突
2.開啟靜態(tài)資源訪問
<!-- 掃描所有的controller 但是不掃描service-->
<context:component-scan base-package="com.coang.controller"/>
<!-- <mvc:resources mapping="/pages/**" location="/WEB-INF/pages/" />-->
<mvc:default-servlet-handler />
<!-- 自動(dòng)掃描該包,使SpringMVC認(rèn)為包下用了@controller注解的類是控制器 -->
<mvc:annotation-driven />
<!-- configure the InternalResourceViewResolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
id="internalResourceViewResolver">
<!-- 前綴 -->
<property name="prefix" value="/WEB-INF/jsp/" />
<!-- 后綴 -->
<property name="suffix" value=".jsp" />
</bean>
3.配置好之后創(chuàng)建Controller以及jsp文件
@Controller
public class TestController {
@RequestMapping("index")
public String index(){
return "index";
}
}
4.配置好tomcat運(yùn)行環(huán)境
5.啟動(dòng)工程
6.SpringMVC集成完畢
貳:集成Spring MyBatis
1.Dao匹配/Bean封裝
2.注解事務(wù)處理
applicationContext-database.xml 數(shù)據(jù)源配置/mapping文件和dao映射
<!-- 引入配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
<value>classpath:/config/jdbc-mysql.properties</value>
</property>
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.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="initialSize" value="${initialSize}"/>
<property name="maxActive" value="${maxActive}"/>
<property name="maxIdle" value="${maxildle}"/>
<property name="minIdle" value="${minldle}"/>
<property name="maxWait" value="${maxWait}"/>
</bean>
<!--spring和MyBatis整合 自動(dòng)掃描mapping.xml文件-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>
<!--Dao接口所在包名 Spring自動(dòng)查找類-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.coang.dao"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
applicationContext-service.xml 事務(wù)管理
<!-- 掃描所有的Service -->
<context:component-scan base-package="com.coang"/>
<!-- 事務(wù)管理 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--
基于注解的聲明時(shí)事物 :
1、開發(fā)團(tuán)隊(duì)達(dá)成一致約定,明確標(biāo)注事物的方法
2、保證事物方法的執(zhí)行時(shí)間盡可能短
3、不是所有的方法都需要事物,如只有一條修改記錄操作
-->
<tx:annotation-driven transaction-manager="transactionManager"/>
坑1 -- 如果SpringMVC的掃描路徑包含Service掃描路徑,由于加載順序,Service會在SpringMVC加載時(shí)在Spring中生成無事務(wù)的bean 在事務(wù)掃描時(shí)由于bean已存在則不再重新創(chuàng)建,導(dǎo)致事務(wù)不生效
坑2 -- idea中的Spring框架context配置應(yīng)如下,否則框架無法正常加載
image.png
TestDEMO:
單元測試
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath*:application-service.xml"})
public class TestUser {
@Autowired
UserService userService;
@Test
@Ignore
public void testAddUser() {
UserModel user = new UserModel();
user.setName("aaa");
user.setPassword("bbb");
Integer id = userService.addUser(user);
Assert.assertNotNull(id);
}
}
Dao mapper文件
<?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.coang.dao.UserDao" >
<select id="findUserById" resultType="com.coang.modal.UserModel" parameterType="java.lang.Integer">
select * from user where id = #{id}
</select>
<insert id="insertUser" parameterType="com.coang.modal.UserModel">
insert into user(name,password) values(#{name},#{password})
<selectKey resultType="int" keyProperty="id" >
SELECT LAST_INSERT_ID();
</selectKey>
</insert>
</mapper>
注:成功整合 mapper文件相當(dāng)于Dao層接口的實(shí)現(xiàn)類 在Service層調(diào)用時(shí)可進(jìn)行注解注入
附錄:附配置文件
1.maven: pom.xml
<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.coang</groupId>
<artifactId>java</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>ssm Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<java-version>1.8</java-version>
<!-- spring版本號 -->
<spring.version>4.3.10.RELEASE</spring.version>
<!-- mybatis版本號 -->
<mybatis.version>3.3.0</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>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- springframe end -->
<!-- mybatis/spring包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.3</version>
</dependency>
<!-- mybatis核心包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- mysql驅(qū)動(dòng)包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.29</version>
</dependency>
<!--數(shù)據(jù)庫連接池-->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.microsoft.sqlserver/mssql-jdbc -->
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>mssql-jdbc</artifactId>
<version>6.1.0.jre8</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<!-- 引入oracle數(shù)據(jù)庫jdbc驅(qū)動(dòng)包 -->
<!--<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version></version>
</dependency>-->
<!--jedis 驅(qū)動(dòng)-->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!--spring data redis-->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.8.6.RELEASE</version>
</dependency>
<!-- Test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- json數(shù)據(jù) -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.35</version>
</dependency>
<!-- JSTL -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- 日志文件管理包 -->
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<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 -->
</dependencies>
<build>
<finalName>WebFramwork-ssm</finalName>
</build>
</project>
2.web: web.xml
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<display-name>WebFramwork-ssm</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:applicationContext-database.xml,
classpath:applicationContext-service.xml
</param-value>
</context-param>
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:config/log4j.properties</param-value>
</context-param>
<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>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--Spring 監(jiān)聽器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--防止Spring內(nèi)存溢出監(jiān)聽器-->
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<!--Spring MVC 配置-->
<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:applicationContext-mvc.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>/jsp/index.jsp</welcome-file>
</welcome-file-list>
<!-- session配置 -->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>
3.Spring mvc:applicationContext-mvc.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/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 掃描所有的controller 但是不掃描service-->
<context:component-scan base-package="com.coang.controller"/>
<!-- <mvc:resources mapping="/pages/**" location="/WEB-INF/pages/" />-->
<mvc:default-servlet-handler />
<!-- 自動(dòng)掃描該包,使SpringMVC認(rèn)為包下用了@controller注解的類是控制器 -->
<mvc:annotation-driven />
<!-- configure the InternalResourceViewResolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
id="internalResourceViewResolver">
<!-- 前綴 -->
<property name="prefix" value="/WEB-INF/jsp/" />
<!-- 后綴 -->
<property name="suffix" value=".jsp" />
</bean>
</beans>
4.Spring:applicationContext-service.xml/applicationContext-database.xml
applicationContext-service.xml - 事務(wù)管理 注解事務(wù)
<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util" xmlns:p="http://www.springframework.org/schema/p"
xmlns:cache="http://www.springframework.org/schema/cache" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-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/util
http://www.springframework.org/schema/util/spring-util-3.2.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-3.2.xsd
http://www.springframework.org/schema/jdbc
http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd"
default-lazy-init="true">
<!-- 掃描所有的Service -->
<context:component-scan base-package="com.coang"/>
<!-- 事務(wù)管理 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--
基于注解的聲明時(shí)事物 :
1、開發(fā)團(tuán)隊(duì)達(dá)成一致約定,明確標(biāo)注事物的方法
2、保證事物方法的執(zhí)行時(shí)間盡可能短
3、不是所有的方法都需要事物,如只有一條修改記錄操作
-->
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
applicationContext-database.xml - 管理數(shù)據(jù)庫連接/dao層映射
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<!--<context:component-scan base-package="com.coang.web"/>-->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
<!--<value>classpath:../../config/jdbc-mysql.properties</value>-->
<value>classpath:/config/jdbc-mysql.properties</value>
</property>
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.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="initialSize" value="${initialSize}"/>
<property name="maxActive" value="${maxActive}"/>
<property name="maxIdle" value="${maxildle}"/>
<property name="minIdle" value="${minldle}"/>
<property name="maxWait" value="${maxWait}"/>
</bean>
<!--spring和MyBatis整合 自動(dòng)掃描mapping.xml文件-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>
<!--Dao接口所在包名 Spring自動(dòng)查找類-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.coang.dao"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
</beans>
ps_0 Spring配置文件是可以用單個(gè)xml配置,只是個(gè)人喜好將配置分開 方便理解
ps_1 目錄結(jié)構(gòu)
WebFramwork-ssm/
│ pom.xml
│ tree.txt
│ WebFramwork-ssm.iml
│
└─src
└─main
├─java
│ └─com
│ └─coang
│ ├─common
│ ├─controller
│ │ TestController.java
│ │
│ ├─dao
│ │ UserDao.java
│ │
│ ├─modal
│ │ UserModel.java
│ │
│ └─service
│ │ UserService.java
│ │
│ └─impl
│ UserServiceImpl.java
│
├─resources
│ │ applicationContext-database.xml
│ │ applicationContext-mvc.xml
│ │ applicationContext-service.xml
│ │
│ ├─config
│ │ jdbc-mysql.properties
│ │ jdbc-sqlserver.properties
│ │ log4j.properties
│ │
│ └─mapper
│ UserMapper.xml
│
└─webapp
│ index.jsp
│
└─WEB-INF
│ web.xml
│
└─jsp
index.jsp