【java】intellij idea搭建SSM框架摘录

xiaoxiao2021-02-27 345

关于springMVC的配置，可以参考这篇文章的第一个小节：【java】intellij idea SpringMVC 配置FreeMarker模板引擎

搭什么搭直接用脚手架不行吗下载就能用下载就能用下载就能用搭建空的Maven项目修改Pom文件编写SSM配置文件配置项目工程编写mybatis的测试用例总结

搭什么搭！直接用脚手架不行吗？！

下载就能用！！下载就能用！！下载就能用！！

码云：TestSSM

咳咳，开个玩笑，如果本着学习态度的话，那就慢慢啃吧~

搭建空的Maven项目

使用Intellij idea 搭建基本的maven空项目 new->project

填写GroupId和ArtifactId，next，选择项目的地址，next->new window open 在新的窗口打开

最后Finish，Maven项目搭建完成，目录如下：

接下来我们构建项目基本骨架，：（1）在java下新建com （2）在com下新建springmvc （3）在springmvc下新建controller、dao、mapping、pojo、service （4）在service下新建impl 如下图：

这里解释一个mybatis的工具，叫做mybatis-generator-core-1.3.2，它能够根据数据库中的表生成dao、mapping、pojo三个类型文件（后面会在mybatis部分详细介绍）

目录解释如下： controller：http（GET和POST等）请求的入口，调用Service，想客户端返回数据

dao：接口，有mybatis自动化工具生成的文件之一，定义了数据表映射成的对象，具有的操作

mapping：具体是sql语句，以xml格式存在，即mybatis的语法文件

pojo：实体类

service：controller调用的服务，service调用dao里面定义的数据库行为方法，来执行对应mapping里的mybatis，从而完成与数据库完整的交互。

service-impl：接口，定义了服务应该具有的函数方法（此处可以理解是提现软件的设计思想，你要是乐意，直接写service也可以）

至此：

修改Pom文件

第一步：配置你的maven

setting.xml镜像配置：（具体可以百度一下其他文章）

<mirror> <id>alimaven</id> <name>aliyun maven</name> <url>http://maven.aliyun.com/nexus/content/groups/public/</url> <mirrorOf>central</mirrorOf> </mirror>

第二步：在pom.xml文件中添加如下内容：

<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>hugo</groupId> <artifactId>example</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>hugo Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  <spring.version>4.1.4.RELEASE</spring.version>  <mybatis.version>3.2.8</mybatis.version>  <slf4j.version>1.7.7</slf4j.version> <log4j.version>1.2.17</log4j.version>  <jackson.version>2.5.0</jackson.version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency>  <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency>  <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency>  <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> <scope>test</scope> </dependency>  <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency>  <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> <scope>provided</scope> </dependency>  <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.30</version> </dependency>  <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.2.2</version> </dependency>  <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency>   <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency>  <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.1.41</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>${slf4j.version}</version> </dependency>   <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.9.13</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.1.0</version> </dependency>  <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>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version>  <scope>test</scope> </dependency>  <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>4.1.7.RELEASE</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>RELEASE</version> </dependency> <dependency> <groupId>org.jsoup</groupId> <artifactId>jsoup</artifactId> <version>1.8.1</version> </dependency> <dependency> <groupId>net.sourceforge.htmlunit</groupId> <artifactId>htmlunit</artifactId> <version>2.15</version> </dependency> <dependency> <groupId>org.seleniumhq.selenium</groupId> <artifactId>selenium-java</artifactId> <version>2.33.0</version> </dependency> <dependency> <groupId>us.codecraft</groupId> <artifactId>webmagic-core</artifactId> <version>0.6.1</version> </dependency> <dependency> <groupId>us.codecraft</groupId> <artifactId>webmagic-extension</artifactId> <version>0.6.1</version> </dependency> </dependencies> <build> <finalName>hugo</finalName> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> <filtering>true</filtering> </resource> </resources> </build> </project>

版本可自行更换，有兴趣的同学可以看看具体配置。maven的更新方式可以选择enable-auto-update（大致意思是这个，当pom文件改动时，自动更新）

编写SSM配置文件

第一部分：与数据库相关的jdbc.properties

在resources下新建个配置文件jdbc.properties，内容如下：

driver=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/project?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

请确保你的mysql服务是开启的，且存在数据库project

第二部分：spring-mvc 在resources下新建个配置文件spring-mvc.xml，内容如下：

<?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">  <context:component-scan base-package="com.springmvc.controller" />  <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> </list> </property> </bean>  <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="mappingJacksonHttpMessageConverter" />  </list> </property> </bean>  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  <property name="prefix" value="/WEB-INF/page/" /> <property name="suffix" value=".jsp" /> </bean>  <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  <property name="defaultEncoding" value="utf-8" />  <property name="maxUploadSize" value="10485760000" />  <property name="maxInMemorySize" value="40960" /> </bean> </beans>

请务必仔细看里面的配置内容，尤其涉及到路径的地方

第三部分：mybatis-config.xml和spring-mybatis.xml

mybatis-config.xml配置：

<?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>  <settings> <setting name="logImpl" value="LOG4J" /> <setting name="cacheEnabled" value="true"/> </settings> </configuration>

此配置的作用是可以让mybatis在执行的时候打印日志，mybatis还有其他很多配置选项，有需求的小伙伴再仔细查看更详细的博文。关于mybatis的配置。

spring-mybatis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">  <context:component-scan base-package="com.springmvc" />  <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <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}" />  <property name="initialSize" value="${initialSize}"></property>  <property name="maxActive" value="${maxActive}"></property>  <property name="maxIdle" value="${maxIdle}"></property>  <property name="minIdle" value="${minIdle}"></property>  <property name="maxWait" value="${maxWait}"></property> </bean>  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="configLocation" value="classpath:/mybatis-config.xml"></property>  <property name="mapperLocations" value="classpath:com/springmvc/mapping/*.xml"></property> </bean>  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.springmvc.dao" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean>  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> </beans>

请务必仔细看里面的配置内容，尤其涉及到路径的地方很多地方出现错误，都是因为spring或mybatis自动扫描的路径错误，导致mapping无法被识别。

第四部分：log4j.xml和log4j.properties log4j.xml 日志模块的配置：

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE log4j:configuration SYSTEM "http://toolkit.alibaba-inc.com/dtd/log4j/log4j.dtd"> <log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/' xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jakarta.apache.org/log4j/ ">    <appender name="consoleAppender" class="org.apache.log4j.ConsoleAppender"> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="[%d{yyyy-MM-dd HH:mm:ss.SSS}]-[%c]-[%t] %x - %m%n"/> </layout> </appender>  <logger name="org.apache.ibatis" additivity="true"> <level value="DEBUG"/> <appender-ref ref="consoleAppender"/> </logger> <logger name="org.mybatis.spring" additivity="true"> <level value="ERROR"/> <appender-ref ref="consoleAppender"/> </logger> <logger name="java.sql" additivity="true"> <level value="DEBUG"/> <appender-ref ref="consoleAppender"/> </logger> <logger name="java.sql.Connection" additivity="true"> <level value="DEBUG"/> <appender-ref ref="consoleAppender"/> </logger> <logger name="java.sql.Statement" additivity="true"> <level value="DEBUG"/> <appender-ref ref="consoleAppender"/> </logger> <logger name="java.sql.PreparedStatement" additivity="true"> <level value="DEBUG"/> <appender-ref ref="consoleAppender"/> </logger>  <logger name="org.springframework" additivity="true"> <level value="ERROR"/> <appender-ref ref="consoleAppender"/> </logger>  <logger name="org.apache.activemq" additivity="true"> <level value="ERROR"/> <appender-ref ref="consoleAppender"/> </logger>    <root> <level value="DEBUG"/> <appender-ref ref="consoleAppender"/> </root> </log4j:configuration>

log4j.properties

#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

以上只是基本配置，如果有其他需求，自行查阅log4j的相关资料。

至此：

配置项目工程

第一步：将配置文件添加入工程

至此如下：

第二步：配置webapp 在src下创建目录webapp

web.xml文件

<!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>  <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mybatis.xml</param-value> </context-param>  <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>  <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>  <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener>  <listener> <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> </listener>  <servlet> <servlet-name>mvc-dispatcher</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>mvc-dispatcher</servlet-name>  <url-pattern>/</url-pattern> </servlet-mapping>   <session-config> <session-timeout>15</session-timeout> </session-config> </web-app>

接下来我们把webapp添加入项目工程

发现里面的web.xml地址路径错误，这里我们自行修改

第三步：添加artifacts

至此如下：

第三步：配置tomcat

至此：

第四步：编写小测试

在controller中新建main. 点击运行，若无报错，则基本配置成功。

package com.springmvc.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; @Controller public class main { @RequestMapping("/") @ResponseBody public String index(){ return "hello world"; } }

编写mybatis的测试用例

模拟的用户登录的行为，进行测试，这里我们在数据库里新建一张表非常简单的表结构

然后我们使用mybatis的自动生成工具mybatis-generator-core，生成pojo、mapping、dao

这里请注意包名和数据库的名称

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <classPathEntry location="mysql-connector-java-5.1.25-bin.jar"/> <context id="DB2Tables" targetRuntime="MyBatis3"> <commentGenerator> <property name="suppressDate" value="true"/> <property name="suppressAllComments" value="true"/> </commentGenerator> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://127.0.0.1/project" userId="root" password="123456"> </jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false"/> </javaTypeResolver>  <javaModelGenerator targetPackage="com.springmvc.pojo" targetProject="src"> <property name="enableSubPackages" value="true"/> <property name="trimStrings" value="true"/> </javaModelGenerator>  <sqlMapGenerator targetPackage="com.springmvc.mapping" targetProject="src"> <property name="enableSubPackages" value="true"/> </sqlMapGenerator>  <javaClientGenerator type="XMLMAPPER" targetPackage="com.springmvc.dao" targetProject="src"> <property name="enableSubPackages" value="true"/> </javaClientGenerator> <table tableName="admin" domainObjectName="Admin" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> </context> </generatorConfiguration>

然后在mybatis-generator目录的lib目录上执行

Java -jar mybatis-generator-core-1.3.2.jar -configfile generatorConfig.xml -overwrite

接着在src目录下就能看见生成的三个文件夹

把它们拷贝到我们的工程目录里，在写一个简单的service

package com.springmvc.service; import com.springmvc.dao.AdminMapper; import com.springmvc.pojo.Admin; import javax.annotation.Resource; public class AdminService { @Resource private AdminMapper adminMapper; public Admin getAdmin(int id){ Admin a=this.adminMapper.selectByPrimaryKey(id); if(a!=null){ return a; } return null; } public int insertAdmin(Admin admin){ return this.adminMapper.insert(admin); } }

至此：

接下来我们在编写一下controller，在main中添加如下代码：

@RequestMapping(value = "/admin",method = RequestMethod.POST) @ResponseBody public int insertUser(Admin admin){ return adminService.insertAdmin(admin); } @RequestMapping(value = "/admin/{id}",method = RequestMethod.GET) @ResponseBody public Admin getUser(@PathVariable Integer id){ return adminService.getAdmin(id); }

最后我们使用postMan来测试：

注册admin：

获取admin：

从控制台里，我们可以看到打印出来的mysql。

以上。

总结

至此，整个项目的基本框架已经搭建完成了，我们使用空的maven项目搭建起了ssm，实现了项目的基本架构，最后如果有不明白的地方可以下载源码查看。

欢迎大家留言交流~

码云：TestSSM

【参考】 SSM框架——详细整合教程（Spring+SpringMVC+MyBatis）

使用maven创建web项目

intellij idea下使用Maven搭建SpringMVC

IDEA搭建SpringMVC并用maven配置的小例子（非常详细）

关于Java Servlet的中文乱码

欢迎关注微信公众号~

转载请注明原文地址: https://www.6miu.com/read-5783.html

技术

最新回复(0)