首先说明这是我一个不熟悉idea和SSM框架的新手小白遇到的坑,适合用idea搭建SSM框架的小伙伴看一看,老鸟就不用看了。以下为详细步骤(傻瓜教程,超级细节)
搭建SSM框架的前提当然是我们已经准备好一下环境
安装好的intellige idea, Java环境,tomcat服务器,maven仓库,mysql数据库。
打开idea,new一个project,选择maven项目,如图,注意不要选错成上面那个webapp
点击next继续,
groupid一般是公司名,Artfactid一般为项目名,对于idea的项目目录结构,我自己也没弄明白,不过这并不影响我们的目标
点击next继续,
这里我们使用自己的本地maven仓库,注意setting.XML,repository路径的修改。next继续,然后finish。
第一次建web maven项目可能需要的时间比较长,耐心等待Maven execution finished。最后的项目结构如下图
我们需要在main包下面新建一个java根目录
然后将java目录改成资源根目录。
然后再java目录下创建package com.ssm 如图
再在com.ssm下创建一个a.txt文件来分隔路径
然后在com.ssm 下创建一下6个package,然后删除a.txt,最后如下
修改pom.xml的内容如下
<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>自己项目的groupId</groupId> <artifactId>自己项目对应</artifactId> <packaging>war<编程客栈;/packaging> <version>1.0-SNAPSHOT</version> <name>同上对应 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>4.11</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.springframew开发者_Go学习ork</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>${slf4j.version}</version> </dependency> <!-- log end --> <!-- 映入JSON --> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.9.13</version> </dependency> <!-- 上传组件包 --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.9</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-messaging</artifactId> <version>4.0.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-websocket</artifactId> <version>4.0.5.RELEASE</version> </dependency> <dependency> <groupId>com.google.code.gson</groupId> <artifactId>gson</artifactId> <version>2.3.1</version> </dependency> </dependencies>
<!-- 千万不要遗漏下面的内容,我就是遗漏了,导致deploment的war包里没有mapper里的xml文件 ,ecilpse中则不会出现这个问题-->
<build> <finalName&编程gt;ProjectMatch</finalName> <resources> <resource> <directory>${basedir}/src/main/java</directory> <includes> <include>**/*.xml</include> </includes> </resource> </resources> </build> </project>
然后在resources目录下新建如下4个文件如图
jdbc.properties 内容如下,标红的地方都需要按自己数据库修改,test为数据库名
driver=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8 username=root password=123456 #定义初始连接数 initialSize=0 #定义最大连接数 maxActive=20 #定义最大空闲 maxIdle=20 #定义最小空闲 minIdle=1 #定义最长等待时间 maxWait=60000
log4j.properties内容如下,可完全复制
#定义LOG输出级别 log4j.rootLogger=INFO,Console,File #定义日志输出目的地为控制台 log4j.appender.Console=org.apache.log4j.ConsoleAppender log4j.appender.Console.Target=System.out #可以灵活地指定日志输出格式,下面一行是指定具体的格式 log4j.appender.Console.layout = org.apache.log4j.PatternLayout log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n #文件大小到达指定尺寸的时候产生一个新的文件 log4j.appender.File = org.apache.log4j.RollingFileAppender #指定输出目录 log4j.appender.File.File = logs/ssm.log #定义文件最大大小 log4j.appender.File.MaxFileSize = 10MB # 输出所以日志,如果换成DEBUG表示输出DEBUG以上级别日志 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
spring-mvc.xml内容如下 ,红色标记需要自己对应修改
<?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/s编程pring-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.qihang.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> <import resource="classpath:spring-mybatis.xml" /> <!-- 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> <!-- 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/page/" /> <property name="suffix" value=".JSP" /> </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" /> </bean> <mvc:annotation-driven/> <mvc:default-servlet-handler/> <!--<mvc:resources location="/" mapping="/js/**" />--> <!--<mvc:resources location="/css/" mapping="/css/**"/>--> <!--<mvc:resources location="/fonts/" mapping="/fonts/**"/>--> <!--<mvc:resources location="/resources/" mapping="/resources/**"/>--> </beans>
spring-mybatis.xml内容如下 同上
<?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 编程 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.qihang" /> <!-- 引入配置文件 --> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropVpbfVGertyPlaceholderConfigurer"> <property name="location" value="classpath:jdbc.properties" /> </bean> <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" /> <property name="configLocation" value="classpath:/mybatis-config.xml"></property> <!-- 自动扫描mapping.xml文件 --> <property name="mapperlocations" value="classpath:com/qihang/mapper/*.xml"></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" />--> <!--<property name="configLocation" value="classpath:/mybatis-config.xml"></property>--> <!--<!– 自动扫描mapping.xml文件 –>--> <!--<property name="mapperLocations" value="classpath:com/qihang/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.qihang.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>
然后项目的web.xml也要对应修改 如下,红色标记同上
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <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> <!--Log4j配置--> <context-param> <param-name>log4jRefreshInterval</param-name> <param-value>60000</param-value> </context-param> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <!-- 编码过滤器 --> <filter> <filter-name>encodingFilter</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>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!--Spring监听器 ApplicationContext 载入 --> <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 核心配置开始 --> <servlet> <servlet-name>mvc-dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 可以通过contextConfigLocation来自定义SpringMVC配置文件的位置,如不指定,则默认在WEB-INF目录下,名称为[<servlet-name>]-servlet.xml, 此时文件名必须为[<servlet-name>]-servlet.xml,否则会出错--> <!--以下init-param是自定义SpringMVC的配置文件的位置 --> <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> <!-- 拦截设置 --> <servlet-mapping> <servlet-name>mvc-dispatcher</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> <!-- Spring MVC 核心配置结束 --> <!-- 配置SESSION超时,单位是分钟 --> <session-config> <session-timeout>15</session-timeout> </session-config> </web-app>
然后我们就可以编写测试了。
在数据库中创建user表,有两条记录,如图
在pojo包中创建user类
package com.qihang.pojo; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Table; @Entity @Table(name = "user") public class user { @Column(name = "username") String username; @Column(name = "password") String password; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } }
在dao包中创建userDao接口
package com.qihang.dao; import com.qihang.pojo.user; public interface userDao { public user selectByUserId(String username); public int insertUser(user user); }
在mapper包中创建userMapping.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.qihang.dao.userDao" > <resultMap id="BaseResultMap" type="com.qihang.pojo.user" ><!--对应的实体类位置 --> <result column="username" property="username" jdbcType="VARCHAR" /> <result column="password" property="password" jdbcType="VARCHAR" /> </resultMap> <sql id="userAtr"> #{username},#{password} </sql> <select id="selectByUserId" parameterType="String" resultMap="BaseResultMap"> SELECT * FROM user WHERE 1=1 <if test="_parameter != null"> AND username = #{username} </if> </select> <insert id="insertUser" parameterType="java.util.HashMap"> INSERT INTO user VALUE(<include refid="userAtr"></include>) </insert> </mapper>
在services包中创建userService接口
package com.qihang.services; import com.qihang.pojo.user; public interface userService { public user querybyUsername(String username); public int insert(user user); }
在servicesImp中创建userServiceImp类
package com.qihang.servicesImp; import com.qihang.pojo.user; import com.qihang.services.userService; import com.qihang.dao.userDao; import org.springframework.stereotype.Service; import org.springframework.beans.factory.annotation.Autowired; @Service("userServiceImp") public class userServiceImp implements userService { @Autowired private userDao userDao; public int insert(user user) { return userDao.insertUser(user); } public user querybyUsername(String username) { return userDao.selectByUserId(username); } }
在WEB-INF下创建page包,然后在page包中创建test.jsp文件 如图
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <body> 用户名<h1>${user.username}</h1> 密码<h1>${user.password}</h1> </body> </html>
然后在controller包下创建userController类
package com.qihang.controller; import com.qihang.pojo.user; import com.qihang.services.userService; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestParam; @Controller public class UserController { @Autowired private userService userService; @RequestMapping("/query") public String query(@RequestParam(value = "username",required = true) String username, Model model){ user user = new user(); user = userService.querybyUsername(username); model.addAttribute("user",user); return "test";
做到这里就把测试domo写完了,下一步将项目部署到服务器。
如图点击配置
点击 +
将本地tomcat配置好,按如图deployment
配置好就完成了。点击运行,在浏览器上输入
http://localhost:8080/query?username=lisi
看到如下就说明我们配置ok了
谢谢你们,看到这里也是幸苦了,如果还没有成功的再认真看看还有哪里是不是遗漏了,也可以在楼下留言,千万别灰心,程序员工作就是与bug作斗争的过程,也是在这些坑中慢慢学习的。
对于新手小白,经常会花很多时间在这些框架的搭建上或是一些工具的配置,而且由于不熟悉,会踩很多坑,花大量时间在这上面确实很不值得的。写这篇博客也是为大家能在学习的路上能更顺利些,当然也是给自己的踩坑路做个记录吧
总结
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