最近公司事情比较少，便想利用这段空闲时间做一个自己的博客。
前端界面已经搞好，感谢杨姐的模板，自己稍微把模板没有的模块给补全了。
今天便开始自己的SSM框架搭建，数据库链接是采用数据库连接池。先上个项目结构图：
这个是基于Maven搭建的ssm框架，我把service层删除了，去掉了dao层接口，业务在需要与数据库交互的时候便直接调用dao层的方法。
1、创建maven项目，maven没有接触过的请自行百度 maven项目在eclisp如何创建。
2、配置 pom.xml 加载jar包
<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.cwj</groupId>
<artifactId>MyBlog</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>MyBlog 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>
<!-- DBCP -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.13</version>
</dependency> <!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<!-- 表示开发的时候引入，发布的时候不会加载此包 -->
<scope>test</scope>
</dependency> <!-- spring核心包 -->
<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>5.1.36</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>MyBlog</finalName>
</build>
</project>
3、在src/main/java跟目录下建好需要的包
4、在src/main/resource下创建spring-mvc.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: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.cwj.controller" />
<!-- 扩充了注解驱动，可以将请求参数绑定到控制器参数 -->
<mvc:annotation-driven/> <!-- 静态文件处理 -->
<!-- location:表示/assets/目录下（即服务器根目录）的static包下的所有文件 -->
<!-- mapping:表示以/static开头的所有请求路径，如/static/a 或者/static/a/b -->
<mvc:resources location="/assets/" mapping="/public/**/" /> <!--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>
</bean> <!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 默认编码 -->
<property name="defaultEncoding" value="utf-8" />
<!-- 文件大小最大值 -->
<property name="maxUploadSize" value="10485760000" />
<!-- 内存中的最大值 -->
<property name="maxInMemorySize" value="40960" />
<!-- 启用是为了推迟文件解析，以便捕获文件大小异常 -->
<property name="resolveLazily" value="true"/>
</bean> <!-- 配置ViewResolver 。可用多个ViewResolver 。使用order属性排序。 InternalResourceViewResolver 放在最后-->
<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="order" value="1"></property>
<property name="mediaTypes">
<map>
<!-- 告诉视图解析器，返回的类型为json格式 -->
<entry key="json" value="application/json" />
<entry key="xml" value="application/xml" />
<entry key="htm" value="text/htm" />
</map>
</property>
<property name="defaultViews">
<list>
<!-- ModelAndView里的数据变成JSON -->
<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
</list>
</property>
<property name="ignoreAcceptHeader" value="true"></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>
5、配置好web.xml就可以测试刚刚配置的Spring+SpringMVC有没有成功。等会儿，全部配置完，记得把注释给取消掉。
<?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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<display-name>Archetype Created Web Application</display-name>
<!-- Spring和mybatis的配置文件 -->
<!-- <context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mybatis.xml</param-value>
</context-param> -->
<!-- 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> -->
<!-- 防止Spring内存溢出监听器 -->
<!-- <listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener> --> <!-- Spring MVC servlet -->
<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>
<welcome-file-list>
<welcome-file>/index.jsp</welcome-file>
</welcome-file-list> </web-app>
6、在com.cwj.controller包下创建一个StudentController.java控制器
package com.cwj.controller; import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping; @Controller
public class StudentController { @RequestMapping(value="/test")
public String test(){ return "com/test";
}
}
7、根据配置的路径，创建相应的test.jsp文件，之后在tomcat中运行。
8、接下来就是配置spring-mybatis.首先创建application.properties 配置数据库连接信息
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc\:mysql\://rm-wz92wfb0l40ny7b5jo.mysql.rds.aliyuncs.com\:3306/test
jdbc.username=root
jdbc.password=CHen123456 #定义初始连接数
jdbc.initialSize=0
#定义最大连接数
jdbc.maxActive=20
#定义最大空闲
jdbc.maxIdle=20
#定义最小空闲
jdbc.minIdle=1
#定义最长等待时间
jdbc.maxWait=60000 dbcp.initialSize=15
dbcp.maxActive=5000
dbcp.maxIdle=0
dbcp.maxWait=900000
dbcp.defaultAutoCommit=true
dbcp.removeAbandoned=true
dbcp.removeAbandonedTimeout=30
dbcp.whenExhaustedAction=1
dbcp.validationQuery=select 1
dbcp.testOnBorrow=fasle
dbcp.testOnReturn=false
9、配置log4j.properties信息
log4j.rootLogger=INFO,Console,File
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n log4j.appender.File = org.apache.log4j.RollingFileAppender
log4j.appender.File.File = logs/ssm.log
log4j.appender.File.MaxFileSize = 10MB
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
10、配置spring-mybatis.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: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 -->
<context:component-scan base-package="com.cwj" /> <!-- 引入配置文件 -->
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:application.properties" />
</bean> <!-- 数据源配置,使用应用内的DBCP数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" 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="${jdbc.password}" /> <property name="initialSize" value="${dbcp.initialSize}" />
<property name="maxActive" value="${dbcp.maxActive}" />
<property name="maxIdle" value="${dbcp.maxIdle}" />
<property name="maxWait" value="${dbcp.maxWait}" />
<property name="defaultAutoCommit" value="${dbcp.defaultAutoCommit}" />
<property name="removeAbandoned" value="${dbcp.removeAbandoned}" />
<property name="removeAbandonedTimeout" value="${dbcp.removeAbandonedTimeout}" />
<property name="logAbandoned" value="true"></property> <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
<property name="timeBetweenEvictionRunsMillis" value="60000" />
<!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
<property name="minEvictableIdleTimeMillis" value="300000" />
<property name="validationQuery" value="${dbcp.validationQuery}" />
<property name="testWhileIdle" value="true" />
<property name="testOnBorrow" value="false" />
<property name="testOnReturn" value="false" /> <!-- 打开PSCache，并且指定每个连接上PSCache的大小 如果用Oracle，则把poolPreparedStatements配置为true，mysql可以配置为false。分库分表较多的数据库，建议配置为false。-->
<property name="poolPreparedStatements" value="false" />
<property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
<!-- 配置监控统计拦截的filters -->
<property name="filters" value="stat" />
</bean> <!-- spring jdbc NamedParameterJdbcTemplate -->
<bean id="namedjdbctemp" class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate">
<constructor-arg ref="dataSource"/>
</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/cwj/mapping/*.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.cwj.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean> <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean> </beans>
11、最后测试配置是否成功。
数据库表是这样的
DROP TABLE IF EXISTS `student`;
CREATE TABLE `student` (
`id` varchar(32) NOT NULL DEFAULT '',
`name` varchar(255) DEFAULT NULL,
`age` smallint(6) DEFAULT NULL,
`sex` smallint(6) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
12、创建实体类Student.java
package com.cwj.pojo; import javax.persistence.Entity; @Entity
public class Student {
private String id;
private String name;
private Integer sex;
private Integer age;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getSex() {
return sex;
}
public void setSex(Integer sex) {
this.sex = sex;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
@Override
public String toString() {
return "Student [id=" + id + ", name=" + name + ", sex=" + sex + ", age=" + age + "]";
} }
13、创建StudentDao
package com.cwj.dao; import java.util.HashMap;
import java.util.Map; import javax.annotation.Resource; import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
import org.springframework.stereotype.Repository;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional; import com.cwj.pojo.Student; @Repository
public class StudentDao { @Resource
private NamedParameterJdbcTemplate namedjdbctemp; @Transactional
public Student queryStuById(String id){
String sql = "select * from student where id =:id";
Map<String, Object> map = new HashMap<String, Object>();
map.put("id", id);
return namedjdbctemp.queryForObject(sql, map,new BeanPropertyRowMapper<Student>(Student.class));
} }
14修改StudentController
package com.cwj.controller; import javax.servlet.http.HttpServletRequest; import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping; import com.cwj.dao.StudentDao;
import com.cwj.pojo.Student; @Controller
public class StudentController { private static Logger log=LoggerFactory.getLogger(StudentController.class); @Autowired
private StudentDao studentService; @RequestMapping(value="/test")
public String test(HttpServletRequest request){
Student student = studentService.queryStuById("2");
request.setAttribute("stu", student);
log.info("stu:"+student.toString());
return "com/test";
}
}
15、修改test.jsp
package com.cwj.controller; import javax.servlet.http.HttpServletRequest; import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping; import com.cwj.dao.StudentDao;
import com.cwj.pojo.Student; @Controller
public class StudentController { private static Logger log=LoggerFactory.getLogger(StudentController.class); @Autowired
private StudentDao studentService; @RequestMapping(value="/test")
public String test(HttpServletRequest request){
Student student = studentService.queryStuById("2");
request.setAttribute("stu", student);
log.info("stu:"+student.toString());
return "com/test";
}
}
16、记得取消web.xml的注释，给张项目结构图便开始测试 因为文件夹被我改了名字。所以在github下载的文件 访问地址是 http://127.0.0.1:8080/MyBlog/test
静态图片也加载成功。
有问题欢迎留言咨询。
贴上github链接：
https://github.com/BeautifulMeet/gitDemo