Mybatis 系列(2)——SSM(spring mvc+spring+Mybatis)框架整合
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最近用Idea开发,idea是一款综合的相对较新的Java IDE。Idea支持很多整合功能,我觉得挺好用的。Idea可以校正xml,支持jsp的调试。最让我喜欢的是,写spring配置文件的时候,写的一些路径都可以自己找到。classpath自己有代码的提示,超级的智能。
环境配置
在整合框架之前,先配置一下JER运行环境,配置maven仓库。
1.File——ProjectStructure——Project——New… 选择jdk的安装环境
2.File——Settings——Maven——Maven home directory选择自己maven的安装目录。下面是maven管理jar包的地方。
概念
1.spring
Spring目的:就是让对象与对象(模块与模块)之间的关系没有通过代码来关联,都是通过配置类说明管理的,简单的说,不用在代码里写死new某个对象,而是全部在配置文件中进行了配置。Spring是一个容器,凡是在容器里的对象才会有Spring所提供的这些服务和功能。
2.Spring MVC
Spring MVC属于SpringFrameWork的后续产品,已经融合在Spring Web Flow里面。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色,这种分离让它们更容易进行定制。
3.Mybatis
MyBatis 是支持普通 SQL查询,存储过程和高级映射的优秀持久层框架。MyBatis 消除了几乎所有的JDBC代码和参数的手工设置以及结果集的检索。MyBatis 使用简单的 XML或注解用于配置和原始映射,将接口和 Java 的POJOs(Plain Old Java Objects,普通的 Java对象)映射成数据库中的记录。
spring Mybatis整合
用的框架的版本分别是:
spring版本号 4.0.2.RELEASE
mybatis版本号 3.2.6
Spring MVC版本号 4.0.2 RELEASE
log4j日志文件管理包版本号 {slf4j |1.7.7} { log4j |1.2.17}
项目目录如下:
1.编写pom.xml,引入jar包
<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.tgb</groupId> <artifactId>Order</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>Order Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <!-- spring版本号 --> <spring.version>4.0.2.RELEASE</spring.version> <!-- mybatis版本号 --> <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> <project.build.sourceEncoding> UTF-8 </project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <!-- 表示开发的时候引入,发布的时候不会加载此包 --> <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> <!-- 导入java ee jar 包 --> <dependency> <groupId>javax</groupId> <artifactId>javaee-api</artifactId> <version>7.0</version> </dependency> <!-- 导入Mysql数据库链接jar包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.30</version> </dependency> <!-- 导入dbcp的jar包,用来在applicationContext.xml中配置数据库 --> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.2.2</version> </dependency> <!-- JSTL标签类 --> <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>${log4j.version}</version> </dependency> <!-- 格式化对象,方便输出日志 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.1.41</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${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> <!-- 上传组件包 --> <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> </dependencies> <build> <finalName>Order</finalName> </build></project>
2.建立jdbc.properties,配置数据库信息
driver=com.mysql.jdbc.Driverurl=jdbc:mysql:///ordersystemusername=rootpassword=123456#定义初始连接数initialSize=0#定义最大连接数maxActive=20#定义最大空闲maxIdle=20#定义最小空闲minIdle=1#定义最长等待时间maxWait=60000
3.log4j.properties配置文件
#定义LOG输出级别log4j.rootLogger=INFO,Console,File#定义日志输出目的地为控制台log4j.appender.Console=org.apache.log4j.ConsoleAppenderlog4j.appender.Console.Target=System.out#可以灵活地指定日志输出格式,下面一行是指定具体的格式log4j.appender.Console.layout = org.apache.log4j.PatternLayoutlog4j.appender.Console.layout.ConversionPattern=[%c] - %m%n#文件大小到达指定尺寸的时候产生一个新的文件log4j.appender.File = org.apache.log4j.RollingFileAppender#指定输出目录log4j.appender.File.File = logs/ssm.log#定义文件最大大小log4j.appender.File.MaxFileSize = 10MB# 输出所以日志,如果换成DEBUG表示输出DEBUG以上级别日志log4j.appender.File.Threshold = ALLlog4j.appender.File.layout = org.apache.log4j.PatternLayoutlog4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n
4.建立spring-Mybatis.xml配置文件
<?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"> <!-- 自动扫描 --> <context:component-scan base-package="com.cn.order" /> <!-- 引入配置文件 --> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:jdbc.properties" /> </bean> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${driver}" /> <property name="url" value="${url}" /> <property name="username" value="${username}" /> <property name="password" value="${password}" /> <!-- 初始化连接大小 --> <property name="initialSize" value="${initialSize}"></property> <!-- 连接池最大数量 --> <property name="maxActive" value="${maxActive}"></property> <!-- 连接池最大空闲 --> <property name="maxIdle" value="${maxIdle}"></property> <!-- 连接池最小空闲 --> <property name="minIdle" value="${minIdle}"></property> <!-- 获取连接最大等待时间 --> <property name="maxWait" value="${maxWait}"></property> </bean> <!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 自动扫描mapping.xml文件 --> <property name="mapperLocations" value="classpath:com/cn/order/mapping/*.xml"></property> </bean> <!-- DAO接口所在包名,Spring会自动查找其下的类 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.cn.order.dao" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean></beans>
5.服务层接口 service
package com.cn.order.service;import com.cn.order.pojo.User;/** * Created by azz-pc on 2016/5/24. */public interface IUserService { User getUserById(int userId);}
6.服务层实现serviceImpl
package com.cn.order.service.impl;import javax.annotation.Resource;import org.springframework.stereotype.Service;import com.cn.order.dao.IUserDao;import com.cn.order.pojo.User;import com.cn.order.service.IUserService;/** * Created by azz-pc on 2016/5/24. */@Service("userService")public class UserServiceImpl implements IUserService { @Resource private IUserDao userDao; public User getUserById(int userId) { return this.userDao.selectByPrimaryKey(userId); }}
7.Junit测试
测试类编写:
package org.zsl.testmybatis;import javax.annotation.Resource;import com.cn.order.pojo.*;import com.cn.order.service.*;import org.apache.log4j.Logger;/*import org.apache.log4j.net.SyslogAppender;*/import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.context.ApplicationContext;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;@RunWith(SpringJUnit4ClassRunner.class) //表示继承了SpringJUnit4ClassRunner类@ContextConfiguration(locations = {"classpath:spring-mybatis.xml"})public class TestMyBatis { private static Logger logger = Logger.getLogger(TestMyBatis.class); private ApplicationContext ac = null; @Resource //private IUserService userService = null; private ICardService cardService=null; private Card card=new Card();// @Before// public void before() {// ac = new ClassPathXmlApplicationContext("applicationContext.xml");// userService = (IUserService) ac.getBean("userService");// } @Test public void test1() {// User user = userService.getUserById(1);// System.out.println(user.getUsername());// System.out.println(user.getPassword());// System.out.println(user.getState());// logger.info("值:"+user.getUsername());// logger.info(JSON.toJSONString(user)); card.setCardid("E000010"); card.setPassword("33333"); card.setOwnername("xiaozhou"); card.setCash("10.0"); card.setCardtypeid(1); card.setStatus("T"); cardService.insert(card); System.out.println("insert success"); }}
利用MyBatis Generator自动创建mapping,dao,pojo层,详情参见博客:http://blog.csdn.net/zhou2s_101216/article/details/51175818
输出insert success 证明 测试成功。
整合springMVC
1.配置spring-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-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.xsd"> <!-- 自动扫描该包,使SpringMVC认为包下用了@controller注解的类是控制器 --> <context:component-scan base-package="com.cn.order.controller"/> <!--<mvc:default-servlet-handler/>--> <!--避免IE执行AJAX时,返回JSON出现下载文件 --> <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> </list> </property> </bean> <!-- 启动SpringMVC的注解功能,完成请求和注解POJO的映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="mappingJacksonHttpMessageConverter"/> <!-- JSON转换器 --> </list> </property> </bean> <!-- 定义跳转的文件的前后缀 ,视图模式配置--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀,变成一个 可用的url地址 --> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!-- 默认编码 --> <property name="defaultEncoding" value="utf-8"/> <!-- 文件大小最大值 --> <property name="maxUploadSize" value="10485760000"/> <!-- 内存中的最大值 --> <property name="maxInMemorySize" value="40960"/> </bean> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:jdbc.properties"/> </bean></beans>
2.配置web.xml
<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <display-name>Archetype Created Web Application</display-name> <!-- 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> <!-- 编码过滤器 --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <async-supported>true</async-supported> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- Spring监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 防止Spring内存溢出监听器 --> <listener> <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> </listener> <!-- Spring MVC servlet --> <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:spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> <async-supported>true</async-supported> </servlet> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <!-- 此处可以可以配置成*.do,对应struts的后缀习惯 --> <url-pattern>/</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.css</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.js</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>/index.jsp</welcome-file> </welcome-file-list> <!-- 配置SESSION超时,单位是分钟 --> <session-config> <session-timeout>15</session-timeout> </session-config></web-app>
3.前台使用的是,spring mvc、bootstrap、angularjs
showUser.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head> <meta name="viewport" content="width=decive-width,initial-scale=1.0"> <title>测试</title> <!--import js in bootstrap--> <script type="text/javascript" src="../lib/js/jquery/jquery.js"></script> <script type="text/javascript" src="../lib/js/bootstrap/bootstrap.min.js"></script> <!--import css in bootstrap--> <link rel="stylesheet" href="../lib/css/bootstrap.min.css"> <!--import angularjs--> <script type="text/javascript" src="../lib/js/angular/angular.js"></script></head><body><div class="panel panel-primary"> <div class="panel-heading"> <div class="panel-title">测试test</div> </div> <div class="panel-body"> <div class="row"> <div class="col-md-12">${user.username},springmvc OKOK</div> <div ng-app="" ng-init="old='22'"> <p>Input how old are you:<input type="text" ng-model="old"></p> <p>You wrote: you are {{old}} years old</p> </div> </div> </div> <div class="panel-footer">footer:made by zhouzhou</div></div></body></html>
运行后结果:
到这里,我5天左右搭出来的框架就在这里了~~
中间遇到了springMVC静态文件被拦截的问题,显示nomaping,正常的view访问都显示了404错误。如何你的DispatcherServlet拦截 * .do这样的URL,就不存在访问不到静态资源的问题。如果你的DispatcherServlet拦截“/”,拦截了所有的请求,同时对 .js,.jpg的访问也就被拦截了。为了可以正常访问静态文件,不要找不到静态文件报404。需要在web.xml中配置:
<servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.css</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.js</url-pattern> </servlet-mapping>
总结
经过了几天的痛苦,最起码搭过了7,8遍才搭出来了。我开始都不知道要发布war包,后来才知道要在tomcat中发布war包,才可以运行出来界面。整个过程虽然有过想放弃但是,还是坚持到了最后。学到很多东西,乐在其中。
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