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大学毕业快一年了,在学校里做了一个android APP的项目,一直都只是熟悉android后台开发是最大的短板,工作后,公司都是自己的框架,这种开源框架基本也没时间去接触。app和后台都是基于公司的平台开发,我觉得一个人做也没有啥难度。一直在混日子,把整个app的架构分析了一遍。后来公司业务需求,我被迫PC端和android客户端都的做。真心现在啥都不是研究的很深。心累。吐槽完毕。接下来,记录我自己学习ssm框架完成crud的整个过程。
点击完成工程就创建完毕。本文是以ssm为工程的如下:
<!-- 加载spring容器 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/classes/spring/applicationContext-*.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener>
<!-- springmvc前端控制器 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- contextConfigLocation配置springmvc加载的配置文件(配置处理器映射器、适配器等等) 如果不配置contextConfigLocation,默认加载的是/WEB-INF/servlet名称-serlvet.xml(springmvc-servlet.xml) --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>*.action</url-pattern> </servlet-mapping>
<!-- post乱码过虑器 --> <filter> <filter-name>CharacterEncodingFilter</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> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>SSM</display-name> <!-- 加载spring容器 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/classes/spring/applicationContext-*.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- springmvc前端控制器 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- contextConfigLocation配置springmvc加载的配置文件(配置处理器映射器、适配器等等) 如果不配置contextConfigLocation,默认加载的是/WEB-INF/servlet名称-serlvet.xml(springmvc-servlet.xml) --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> </servlet-mapping> <!-- post乱码过虑器 --> <filter> <filter-name>CharacterEncodingFilter</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> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <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> </web-app>
工程下建立源文件夹
创建spring相关的配置文件夹:
首先在config文件夹下创建如下文件:
db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis
jdbc.username=root
jdbc.password=mysql
log4j.properties
# Global logging configuration\uff0c\u5efa\u8bae\u5f00\u53d1\u73af\u5883\u4e2d\u8981\u7528debug
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
然后在spring文件夹下配置如下文件
applicationContext-dao.xml <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:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "> <!-- 加载db.properties文件中的内容,db.properties文件中key命名要有一定的特殊规则 --> <context:property-placeholder location="classpath:db.properties" /> <!-- 配置数据源 ,dbcp --> <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="maxActive" value="30" /> <property name="maxIdle" value="5" /> </bean> <!-- sqlSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 数据库连接池 --> <property name="dataSource" ref="dataSource" /> <!-- 加载mybatis的全局配置文件 --> <property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml" /> </bean> <!-- mapper扫描器 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 扫描包路径,如果需要扫描多个包,中间使用半角逗号隔开 --> <property name="basePackage" value="com.yqq.ssm.mapper"></property> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> </bean> </beans>
applicationContext-service.xml <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:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "> <!-- 商品管理的service --> <bean id="itemsService" class="com.yqq.ssm.service.impl.ItemsServiceImpl"/> </beans>
applicationContext-transaction.xml <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:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "> <!-- 事务管理器 对mybatis操作数据库事务控制,spring使用jdbc的事务控制类 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 数据源 dataSource在applicationContext-dao.xml中配置了 --> <property name="dataSource" ref="dataSource"/> </bean> <!-- 通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 传播行为 --> <tx:method name="save*" propagation="REQUIRED"/> <tx:method name="delete*" propagation="REQUIRED"/> <tx:method name="insert*" propagation="REQUIRED"/> <tx:method name="update*" propagation="REQUIRED"/> <tx:method name="find*" propagation="SUPPORTS" read-only="true"/> <tx:method name="get*" propagation="SUPPORTS" read-only="true"/> <tx:method name="select*" propagation="SUPPORTS" read-only="true"/> </tx:attributes> </tx:advice> <!-- aop --> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.yqq.ssm.service.impl.*.*(..))"/> </aop:config> </beans>
创建mybatis相关的文件夹
sqlMapConfig.xml <?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> <!-- 全局setting配置,根据需要添加 --> <!-- 配置别名 --> <typeAliases> <!-- 批量扫描别名 --> <package name="com.yqq.ssm.po"/> </typeAliases> <!-- 配置mapper 由于使用spring和mybatis的整合包进行mapper扫描,这里不需要配置了。 必须遵循:mapper.xml和mapper.java文件同名且在一个目录 --> <!-- <mappers> </mappers> --> </configuration>
逆向工程生成po类和mapper接口
修改数据库连接
运行后生成的代码
为了生成动态代理对象,servce能自动注入需要确保如下配置。
编写service层类
Service层的方法需要注册到spring容器中
控制层调用service层的方法。通过modeandview返回数据给视图层(视图层通过addobject key取数据)。
调用控制层方法:
function queryItems(){
//提交form
document.itemsForm.action="${pageContext.request.contextPath }/items/getItemInfo.action?id=1";
document.itemsForm.submit();
}
<input type="button" value="查询" onclick="queryItems()"/>
http://localhost:8080/SSM/items/getItemInfo.action?id=1即可访问
至此环境搭建完成。
下面进行crud操作。
1、首先,需要建立一个test2数据库。
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test2
jdbc.username=root
jdbc.password=admin
2、dao开发
便于扩展,定义如下三个类
package com.yqq.ssm.po; import java.util.Date; import javax.validation.constraints.Size; import org.hibernate.validator.constraints.NotEmpty; public class Items { private Integer id; private String name; private Float price; private String pic; private Date createtime; private String detail; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name == null ? null : name.trim(); } public Float getPrice() { return price; } public void setPrice(Float price) { this.price = price; } public String getPic() { return pic; } public void setPic(String pic) { this.pic = pic == null ? null : pic.trim(); } public Date getCreatetime() { return createtime; } public void setCreatetime(Date createtime) { this.createtime = createtime; } public String getDetail() { return detail; } public void setDetail(String detail) { this.detail = detail == null ? null : detail.trim(); } }
package com.yqq.ssm.po; public class ItemsCustom extends Items { }
package com.yqq.ssm.po; public class ItemsCustomVO { private Items items; private ItemsCustom itemsCustom; public Items getItems() { return items; } public void setItems(Items items) { this.items = items; } public ItemsCustom getItemsCustom() { return itemsCustom; } public void setItemsCustom(ItemsCustom itemsCustom) { this.itemsCustom = itemsCustom; } }
编写ItemCustomMapper.xmll映射文件
<?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.yqq.ssm.mapper.ItemCustomMapper" > <insert id="saveItems" parameterType="itemsCustomVO" > <selectKey keyProperty="itemsCustom.id" order="AFTER" resultType="java.lang.Integer" > select LAST_INSERT_ID() </selectKey> insert into items(name,price,pic,createtime,detail) values(#{itemsCustom.name},#{itemsCustom.price}, #{itemsCustom.pic},#{itemsCustom.createtime},#{itemsCustom.detail}) </insert> <insert id="saveItemsUUID" parameterType="itemsCustomVO" > <selectKey keyProperty="itemsCustom.id" order="BEFORE" resultType="java.lang.String" > select uuid() </selectKey> insert into items(name,price,pic,createtime,detail) values(#{itemsCustom.name},#{itemsCustom.price},#{itemsCustom.pic},#{itemsCustom.createtime},#{itemsCustom.detail}) </insert> <select id="getAllItemsInfos" resultType="itemsCustom"> select * from items </select> <update id="updItems" parameterType="itemsCustomVO" > update items set name=#{itemsCustom.name},price=#{itemsCustom.price},pic=#{itemsCustom.pic},createtime=#{itemsCustom.createtime}, detail=#{itemsCustom.detail} where id=#{itemsCustom.id} </update> <update id="updItems2" parameterType="itemsCustomVO"> update items set name=#{itemsCustom.name},price=#{itemsCustom.price},pic=#{itemsCustom.pic},createtime=#{itemsCustom.createtime}, detail=#{itemsCustom.detail} where id=#{itemsCustom.id} </update> <delete id="delItembyId" parameterType="int"> delete from items where id=#{id} </delete> </mapper>
定义ItemCustomMapper..java接口
package com.yqq.ssm.mapper; import java.util.List; import com.yqq.ssm.po.ItemsCustom; import com.yqq.ssm.po.ItemsCustomVO; public interface ItemCustomMapper { int saveItems(ItemsCustomVO v) throws Exception; int saveItemsUUID(ItemsCustomVO v) throws Exception; List<ItemsCustom> getAllItemsInfos() throws Exception; void updItems(ItemsCustomVO v)throws Exception; void delItembyId(int v)throws Exception; }
编写service层代码
定义service接口,如下:
注册服务给controller使用:
控制层:
整个学习项目访问的地址:http://localhost:8080/SSM/items/getAllItemsInfos.action
代码下载地址:http://download.csdn.net/detail/u014600432/9527779
Spring+SpringMVC+mybatis入门(环境搭建+crud)
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原文地址:http://blog.csdn.net/u014600432/article/details/51474102