一个ssm框架小例子

mac2024-11-11  9

ssm小例子:eclipse+jdk1.8+spring4.3.9+springmvc4.3.9+mybatis3.2.7 +Tomcat8.5

maven开发

jar包: 一、目录 二、相应的代码文件 1.src/main/webapp/WEB-INF/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" 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_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>Archetype Created Web Application</display-name> <!--配置spring容器 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath: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> <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> <!-- 第一种:*.action,访问以.action结尾 由DispatcherServlet进行解析 第二种:/,所以访问的地址都由DispatcherServlet进行解析,对于静态文件的解析需要配置不让DispatcherServlet进行解析使用此种方式可以实现 RESTful风格的url 第三种:/*,这样配置不对,使用这种配置,最终要转发到一个jsp页面时, 仍然会由DispatcherServlet解析jsp地址,不能根据jsp页面找到handler,会报错。 --> <url-pattern>*.action</url-pattern> </servlet-mapping> <!--post乱码过滤器 --> <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> </web-app>

2.src/main/resources/spring/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.qhua.ssm.mapper"></property> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> </beans>

3.src/main/resources/spring/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.qhua.ssm.service.impl.ItemsServiceImpl"/> </beans>

4.src/main/resources/spring/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.qhua.ssm.service.impl.*.*(..))"/> </aop:config> </beans>

5.src/main/resources/spring/springmvc.xml

<!-- 可以扫描controller、service、... 这里让扫描controller,指定controller的包 --> <context:component-scan base-package="com.qhua.ssm.controller"></context:component-scan> <!--注解映射器 --> <!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/> --> <!--注解适配器 --> <!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/> --> <!-- 使用 mvc:annotation-driven代替上边注解映射器和注解适配器配置 mvc:annotation-driven默认加载很多的参数绑定方法, 比如json转换解析器就默认加载了,如果使用mvc:annotation-driven不用配置上边的RequestMappingHandlerMapping和RequestMappingHandlerAdapter 实际开发时使用mvc:annotation-driven --> <mvc:annotation-driven></mvc:annotation-driven> <!-- 视图解析器 解析jsp解析,默认使用jstl标签,classpath下的得有jstl的包 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 配置jsp路径的前缀 --> <property name="prefix" value="/jsp/"/> <!-- 配置jsp路径的后缀 --> <property name="suffix" value=".jsp"/> </bean> <!-- 自定义参数绑定 --> <!-- <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"> 转换器 <property name="converters"> <list> 日期类型转换 <bean class="com.qhua.ssm.controller.converter.CustomDateConverter"/> </list> </property> </bean> -->

6.src/main/resources/mybatis/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.qhua.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 --> </configuration>

7.src/main/resources/db.properties

jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/test jdbc.username=root jdbc.password=1235678

8.src/main/resources/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

9.com/qhua/ssm/controller/ItemsController.java

package com.qhua.ssm.controller; import java.util.List; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import com.qhua.ssm.po.Items; import com.qhua.ssm.service.ItemsService; import com.qhua.ssm.service.impl.ItemsServiceImpl; @Controller public class ItemsController { //@Resource //@Resource是需要写名字的,例如@Resource("userDao")。 @Autowired //如果你不想写名字,改用@Autowired。 private ItemsService itemsService; @RequestMapping("/queryItems") public String getAllItems(HttpServletRequest request,Model model) { List<Items> list=itemsService.getAllItems(); model.addAttribute("list",list); return "index"; } }

10.com/qhua/ssm/service/ItemsService.java

package com.qhua.ssm.service; import java.util.List; import com.qhua.ssm.po.Items; public interface ItemsService { List<Items> getAllItems(); }

11.com/qhua/ssm/service/impl/ItemsServiceImpl.java

package com.qhua.ssm.service.impl; import java.util.List; import javax.annotation.Resource; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.qhua.ssm.mapper.ItemsMapper; import com.qhua.ssm.po.Items; import com.qhua.ssm.service.ItemsService; @Service public class ItemsServiceImpl implements ItemsService{ //@Resource @Autowired private ItemsMapper itemsMapper; @Override public List<Items> getAllItems() { return itemsMapper.getAllItems(); } }

12.com/qhua/ssm/mapper/ItemsMapper.java

package com.qhua.ssm.mapper; import java.util.List; import com.qhua.ssm.po.Items; public interface ItemsMapper { List<Items> getAllItems(); }

13.com/qhua/ssm/mapper/ItemsMapper.xml

<?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.qhua.ssm.mapper.ItemsMapper"> <resultMap type="com.qhua.ssm.po.Items" id="BaseResultMap"> <id column="id" property="id" jdbcType="INTEGER" /> <result column="name" property="name" jdbcType="VARCHAR" /> <result column="price" property="price" jdbcType="REAL" /> <result column="pic" property="pic" jdbcType="VARCHAR" /> <result column="createtime" property="createtime" jdbcType="TIMESTAMP" /> <result column="detail" property="detail" jdbcType="LONGVARCHAR" /> </resultMap> <!--查询所有用户 --> <select id="getAllItems" resultMap="BaseResultMap"> select *from items </select> </mapper>

14.com/qhua/ssm/po/Items.java

package com.qhua.ssm.po; import java.util.Date; 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; } 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; } 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; } @Override public String toString() { return "Items [id=" + id + ", name=" + name + ", price=" + price + ", pic=" + pic + ", createtime=" + createtime + ", detail=" + detail + "]"; } }

按照这样便能顺利完成。

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