ssm初步

最新推荐文章于 2022-06-14 19:21:08 发布

原创最新推荐文章于 2022-06-14 19:21:08 发布 · 474 阅读

0 ·

CC 4.0 BY-SA版权

框架专栏收录该内容

5 篇文章

订阅专栏

本文介绍如何使用SpringMVC、MyBatis和Spring（简称SSM）搭建环境，并实现部门信息的查询功能。文章详细讲解了从配置web.xml、pom.xml到实现Controller、Service及DAO层的具体步骤。

1. 功能描述：

使用spring springMVC mybatis，实现查询所有的部门

辅助： maven + 注解

注意需要导入 j2ee的包

3. 然后就是 web.xml的编写：

导入springMVC配置---编码方式----spring的配置---mybatis配置--- 设置不拦截的文件

<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
	version="3.0">
	<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>
	
	
	<!-- 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>
	
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring-mybatis.xml</param-value>
	</context-param>
	<!-- 防止Spring内存溢出监听器 -->
	<listener>
		<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
	</listener>
	
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.js</url-pattern>
	</servlet-mapping>
</web-app>

然后就是 pom.xml配置：

2.依次导入需要的jar包：

springMVC +mysql+ 日志+ 测试+spring+mybatis+jstl+fastjson+文件上传的

<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.xt</groupId>
	<artifactId>cms</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>cms 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>
	</properties>


	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>
		
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>

		<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>cms</finalName>
	</build>
</project>

4. 然后就是接口层+实现层 mapper

public interface IDeptMapper {

public abstract List<Dept> findDepts();
}

<?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.xt.cms.mapper.IDeptMapper">
	
  <resultMap type="com.xt.cms.domain.Dept" id="deptResultMap">
  	<id column="dept_id" property="deptId"/>
  	<result column="dept_name" property="deptName"/>
  </resultMap>

  <select id="findDepts" resultMap="deptResultMap">
  	select dept_id,dept_name from tbdept
  </select>
</mapper>

5.然后就是service+serviceIMPL

public interface IDeptService {

public List<Dept> findDepts();
}

@Service("deptService")
public class DeptServiceImpl implements IDeptService{

@Autowired 自动注入
private IDeptMapper deptDao;

public List<Dept> findDepts() {

return deptDao.findDepts();
}

@Transactional 自动提交事务（MVC里面先不扫描）
public void saveDept(Dept dept){

}

}

6.domain层

7.然后就是 springMVC的配置

<?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.xt.cms.controller"/>
	
	
	<!--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>
		<!-- 处理日期转换，从页面到controller -->
	<property name="webBindingInitializer">
<bean class="org.springframework.web.bind.support.ConfigurableWebBindingInitializer">
				<property name="conversionService">
					<bean
						class="org.springframework.format.support.FormattingConversionServiceFactoryBean"></bean>
				</property>
			</bean>
		</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/view/" />
		<property name="suffix" value=".jsp" />
	</bean>

</beans>

8.
配置 spring—mybatis

先把数据源的文件导入

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/s2db
username=root
password=123456
initialSize=0
maxActive=20
maxIdle=20
minIdle=1
maxWait=60000

<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	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/aop 
			            http://www.springframework.org/schema/aop/spring-aop-3.0.xsd  
			            http://www.springframework.org/schema/tx 
			            http://www.springframework.org/schema/tx/spring-tx-3.0.xsd     
                        http://www.springframework.org/schema/mvc    
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
	<!-- 开启事物注解 -->
	<tx:annotation-driven />

	<context:component-scan base-package="com.xt.cms.mapper"/> <!--注，此处自动扫描注解的时候，不去扫描Service -->
    <context:component-scan base-package="com.xt.cms.service"/> 
    <context:component-scan base-package="com.xt.cms.domain"/> <!--注，此处自动扫描注解的时候，不去扫描Service -->
    

	<!-- 读取db.properties -->
	<bean id="propertyConfigurer"
		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="location" value="classpath:db.properties" />
	</bean>
	
	<!-- 配置数据源 -->
	
	<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/xt/cms/mapper/*.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.xt.cms.mapper" />
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">
		</property>
	</bean>
	<!-- 事务管理 -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>
	
	
</beans>

9. controller的编写自动识别注入+path值引入+ ajax+取别名

package com.xt.cms.controller;

@Controller
@RequestMapping("/dept")
public class DeptController {

	@Autowired
	private IDeptService  deptService;
	
	@RequestMapping("/list")
	public String  findDept(HttpServletRequest request){
		List<Dept>  ds = deptService.findDepts();
		request.setAttribute("ds", ds);
		return "deptlist";
	}
	
	@RequestMapping("/listjson/{id1}_{id2}_{id3}")
	public  @ResponseBody List<Dept> findDept(@PathVariable int id1,
			@PathVariable int id2,@PathVariable int id3){
		System.out.println(id1+"\t"+id2+"\t"+id3);
		List<Dept>  ds = deptService.findDepts();
		return ds;
	}
}

@RequestMapping("/listjson/{id1}_{id2}_{id3}")
对应的 jsp页面就是 url:'dept/listjson/1_2_3',

@ResponseBody List<Dept> 返回的 success： function（data）

10. 前端的编写


<script type="text/javascript" src="js/jquery-3.1.0.min.js"></script>
<script type="text/javascript" src="js/json2.js"></script>

<script type="text/javascript">
	
	function dosome() {
		$.ajax({
			url:'dept/listjson/1_2_3',
			type:'post',
			datatype:'json',
			success:function(dt){
				alert(JSON.stringify(dt));
			},
			error:function(dt){
				alert(JSON.stringify(dt));
			}
		});
	}
</script>
</head>
<body>
	<h2>
		<a href="dept/list">跳跳跳</a> 
		<input type="button" onclick="dosome()"
			value="查啊" />
	</h2>
</body>
</html>

11. 附上日志记录

log4j.rootLogger=debug,Console,File  
#\u5B9A\u4E49\u65E5\u5FD7\u8F93\u51FA\u76EE\u7684\u5730\u4E3A\u63A7\u5236\u53F0  
log4j.appender.Console=org.apache.log4j.ConsoleAppender  
log4j.appender.Console.Target=System.out  
#\u53EF\u4EE5\u7075\u6D3B\u5730\u6307\u5B9A\u65E5\u5FD7\u8F93\u51FA\u683C\u5F0F\uFF0C\u4E0B\u9762\u4E00\u884C\u662F\u6307\u5B9A\u5177\u4F53\u7684\u683C\u5F0F  
log4j.appender.Console.layout = org.apache.log4j.PatternLayout  
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n  
  
#\u6587\u4EF6\u5927\u5C0F\u5230\u8FBE\u6307\u5B9A\u5C3A\u5BF8\u7684\u65F6\u5019\u4EA7\u751F\u4E00\u4E2A\u65B0\u7684\u6587\u4EF6  
log4j.appender.File = org.apache.log4j.RollingFileAppender  
#\u6307\u5B9A\u8F93\u51FA\u76EE\u5F55  
log4j.appender.File.File = logs/ssm.log  
#\u5B9A\u4E49\u6587\u4EF6\u6700\u5927\u5927\u5C0F  
log4j.appender.File.MaxFileSize = 10MB  
# \u8F93\u51FA\u6240\u4EE5\u65E5\u5FD7\uFF0C\u5982\u679C\u6362\u6210DEBUG\u8868\u793A\u8F93\u51FADEBUG\u4EE5\u4E0A\u7EA7\u522B\u65E5\u5FD7  
log4j.appender.File.Threshold = ALL  
log4j.appender.File.layout = org.apache.log4j.PatternLayout  
log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n