标签:sprinmvc xml spring 注解 mybatis org public
自学中 ,最近想做下ssm整合,不是专业出身的我,学习Java还是比较缓慢。(一边工作一边学习非计算类工作)
在整合通过网络基本学习了下,网上大概思路就是用spring整合springmvc 再spring整合mybatis,最后再整合。
作为不懂原理及未去熟悉源码的我,基本学会了怎么把网上基本ssm整合码出来。写得烂的,请多包含。作为我学习的动力写下了这篇博客。
1.搭建目录结构如下:
2.在pom.xml文件中导入一下所需要的jar包坐标依赖
<dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.5.0</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>5.2.9.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>5.2.9.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.2.9.RELEASE</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.12</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.39</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.5.0</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>5.2.9.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>5.2.9.RELEASE</version> </dependency> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>0.9.1.2</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>5.1.4.RELEASE</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.2.1</version> <classifier>sources</classifier> <type>jar.sha256</type> </dependency> <dependency> <groupId>com.10duke.client.json</groupId> <artifactId>jackson</artifactId> <version>1.0.1</version> </dependency> <dependency> <groupId>org.junit.jupiter</groupId> <artifactId>junit-jupiter</artifactId> <version>RELEASE</version> <scope>compile</scope> </dependency> </dependencies>
导入坐标后我就开始搭建springmvc并进行测试
3.配置web.xml文件
3.1配置过滤器
<filter> <filter-name>characterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> </filter> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
3.2配置基本搭建springmvc的配置
<servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>
4.创建spring-mvc.xml配置文件
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd "> <!--可以后期静态资源访问、驱动器、过滤器配置等。 现在我们导入了其他俩个xml配置文件和注解扫描 --> <import resource="applicationContext.xml"></import> <import resource="mybatis-spring.xml"></import> <context:component-scan base-package="com.zero.Contorl"></context:component-scan> </beans>
<context:component-scan base-package="xx.xxx.xxxx"/>会自动扫描该xx.xxx.xxxx包下的注解,完成相应的配置
5.在控制文件当中使用注解
@Controller @RequestMapping("/demo") public class ZeroContorl { @Autowired private ZeroServiceimpl zeroserviceimpl; @RequestMapping("/index") public @ResponseBody List<ZeroDetails> index(){ List<ZeroDetails> x =zeroserviceimpl.FindAll(); return x; }
其中注解的详解请读者自行进行网上浏览,我自己也做了下笔记:
@Component注解:作用于class类上,相当于<bean id="xxx" class="xxx.xxx.xxx">;@Component注解的衍生物分别:1.@Repository在Dao层进行使用;2.@Serivice在Serivice层进行使用;3.Controller在web层使用
@Autowired注解:功能和注解@Resource一样,可以对类成员变量,方法及构造函数进行标注,完成自动装配的工作。只不过注解@Resource是按照名称进行装配的,而@Autowired则是按照类型进行装配的
@Qualifier("名称") 配合@Autowired使用
6.开始进行测试服务器能否正常访问,
可以先替换成public void index(){System.out.print("hello");}
7.创建Dao层和Service层,并使用注解
Dao层:
@Repository public class demodao { public List<ZeroDetails> FindAll(){ ZeroDetails dd=new ZeroDetails(); dd.setZid(22); dd.getZname("xihuan"); List<ZeroDetails> xx=new ArrayList<>(); xx.add(dd); return xx; } }
其中发现少pojo,自行创建pojo;为了方便后面整合mybatis,里面的变量要与数据库一致
Service层:
@Service public class ZeroServiceimpl implements ZeroService { @Autowired private com.zero.Dao.demodao2 demodao2; @Override public List<ZeroDetails> FindAll() { return demodao2.FindAll(); } }
8.创建applicationContext.xml,spring配置文件,整合spring、springmvc。
<?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" 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.xsd"> <context:component-scan base-package="com.zero.Service"></context:component-scan> <context:component-scan base-package="com.zero.Dao"></context:component-scan> </beans>
总结下基本思路:把所有的类全部交给spring容器,然后在我需要某个类的地方进行注入这个类即可使用该类;
9.搭建mybatis的配置及测试是否搭建成功
创建mybatis.xml配置
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org.//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <environments default="mysql"> <environment id="mysql"> <transactionManager type="JDBC"></transactionManager> <dataSource type="POOLED"> <property name="driver" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql:///xxx?useUnicode=true&characterEncoding=utf-8&useSSL=false"/> <property name="username" value="xxx"/> <property name="password" value="xxx"/> </dataSource> </environment> </environments> <mappers> <mapper class="com.zero.Dao.demodao2"></mapper> </mappers> </configuration>
在demodao2接口下加入mybatis注解
@Repository public interface demodao2 { @Select("select * from zerodetails") List<ZeroDetails> FindAll(); }
测试:
10.当测试成功后,我们就开始准备spring、mybatis、springmvc整合
创建mybatis-spring.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" 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.xsd"> <bean id="dataSource" class="com.mchange.v2.c3p0.DriverManagerDataSource"> <property name="driverClass" value="com.mysql.jdbc.Driver"/> <property name="jdbcUrl" value="jdbc:mysql:///xxx?useUnicode=true&characterEncoding=utf-8&useSSL=false"/> <property name="user" value="xxxx"/> <property name="password" value="xxxx"/> </bean> <bean id="sqlsessionfactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis.xml"/> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionFactoryBeanName" value="sqlsessionfactory"/> <property name="basePackage" value="com.zero.Dao"/> </bean> </beans>
自我总结下:通过spring进行配置DriverManagerDataSource类需要的基本链接数据驱动配置信息;再将dataSource配置信息、mybatis.xml环境配置注入到SqlSessionFactoryBean类当中;MapperScannerConfigurer类我还是专门再网上收的。我这里就不具体描述了;我认为就是在com.zero.Dao查找mapper注解信息,自动装配;
最后在web.xml中配置监听器
对了,在之前我们替换测试部分记得返回到开始的文件哦
进行tomcat基本配置后启动服务,访问服务器,完成
标签:sprinmvc,xml,spring,注解,mybatis,org,public 来源: https://www.cnblogs.com/cnleihu/p/13852155.html
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