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Spring+SpringMVC+mybatis入门(环境搭建+crud)

时间:2016-05-23 15:28:55      阅读:193      评论:0      收藏:0      [点我收藏+]

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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。

一、开发环境搭建

1、新建一个动态web项目


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点击完成工程就创建完毕。本文是以ssm为工程的如下:

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2、配置基于SSM的开发环境

2,1添加springmvcmybatis的整合需要的所有jar

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jar包下载将在后面提供。

2.2配置web.xml

2.2.1加载spring容器

如下所示是spring配置的类所在的路径:
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<!-- 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>



2.2.2springmvc前端控制器

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<!-- 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>



2.2.3post乱码过虑器

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 <!-- 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>


2.2.4整个web.xml文件

<?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>



2.3创建配置文件

工程下建立源文件夹

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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

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修改数据库连接

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运行后生成的代码


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为了生成动态代理对象,servce能自动注入需要确保如下配置

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编写service层类

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Service层的方法需要注册到spring容器中

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编写控制层controller

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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)。

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视图层

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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()"/>

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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

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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:

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注册服务给controller使用:

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控制层:

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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

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