Java從入門到實戰之(6)SSM框架使用
對於ssm框架網上有很多,這裡只是自己為大家提供的一個ssm整合框架參考分享,這個前提是基於maven的管理工具寫的,
一 建立Maven專案具體步驟如下:
二 配置檔案
2.1 配置mybatis-config.xml
2.2 配置mapper.xml
2.3配置jdbc.properties
2.4配置applicationContext.xml
2.5配置springmvc-servlet.xml
2.6配置web.xml
2.7配置log4j.properties
2.8引入依賴
三 測試
3.1建立java檔案
3.1.1 UserController類
3.1.2 User實體類
3.1.3 UserService介面
3.1.4 UserServiceImpl實現類
3.1.5 UserMapper類
3.2建立MySql資料庫表
3.3建立users.jsp檔案
3.4結果
==============================================================================
1.設計資料庫表如下:
/* Date: 2019-03-11 23:19:10 */ SET FOREIGN_KEY_CHECKS=0; -- ---------------------------- -- Table structure for tb_user-- ---------------------------- DROP TABLE IF EXISTS `tb_user`; CREATE TABLE `tb_user` ( `id` bigint(20) NOT NULL AUTO_INCREMENT, `user_name` varchar(100) DEFAULT NULL COMMENT '使用者名稱', `password` varchar(100) DEFAULT NULL COMMENT '密碼', `name` varchar(100) DEFAULT NULL COMMENT '姓名', `age` int(10) DEFAULT NULL COMMENT '年齡', `sex` tinyint(1) DEFAULT NULL COMMENT '性別,1男性,2女性', `birthday` date DEFAULT NULL COMMENT '出生日期', `created` datetime DEFAULT NULL COMMENT '建立時間', `updated` datetime DEFAULT NULL COMMENT '更新時間', PRIMARY KEY (`id`), UNIQUE KEY `username` (`user_name`) ) ENGINE=InnoDB AUTO_INCREMENT=27 DEFAULT CHARSET=utf8; INSERT INTO `tb_user` VALUES (1, 'zhangsan', '123456', '張三', 30, 1, '1984-8-8', '2014-9-19 16:56:04', '2014-9-21 11:24:59'); INSERT INTO `tb_user` VALUES (2, 'lisi', '123456', '李四', 21, 2, '1991-1-1', '2014-9-19 16:56:04', '2014-9-19 16:56:04'); INSERT INTO `tb_user` VALUES (3, 'wangwu', '123456', '王五', 22, 2, '1989-1-1', '2014-9-19 16:56:04', '2014-9-19 16:56:04'); INSERT INTO `tb_user` VALUES (4, 'zhangwei', '123456', '張偉', 20, 1, '1988-9-1', '2014-9-19 16:56:04', '2014-9-19 16:56:04'); INSERT INTO `tb_user` VALUES (5, 'lina', '123456', '李娜', 28, 1, '1985-1-1', '2014-9-19 16:56:04', '2014-9-19 16:56:04'); INSERT INTO `tb_user` VALUES (6, 'lilei', '123456', '李磊', 23, 1, '1988-8-8', '2014-9-20 11:41:15', '2014-9-20 11:41:15'); INSERT INTO `tb_user` VALUES (8, 'xiaofeng', '123456', '蕭峰', 30, 1, '2018-6-25', '2018-6-25 18:42:25', '2018-6-25 18:42:25'); INSERT INTO `tb_user` VALUES (12, 'zhendeshuai', '565656', '吳彥祖', 26, 1, '2018-6-26', '2018-6-26 14:55:59', '2018-6-26 15:12:12'); INSERT INTO `tb_user` VALUES (14, 'jiumozhi', '123456', '鳩摩智', 30, 1, '2018-6-26', '2018-6-26 23:53:15', '2018-6-26 23:53:15'); INSERT INTO `tb_user` VALUES (21, 'zhangsan1234', '12345', '傑克', 20, 1, '2000-1-1', '2018-7-7 21:50:26', '2018-7-7 21:50:26'); INSERT INTO `tb_user` VALUES (22, 'zhangsanqwe1', '123455', '張三', 30, 1, '1999-2-25', '2018-7-7 21:51:20', '2018-7-7 21:51:20'); INSERT INTO `tb_user` VALUES (25, 'qianjiu', '123456', '錢九', 30, 1, '1989-1-1', '2018-7-7 21:51:20', '2018-7-7 21:51:20'); INSERT INTO `tb_user` VALUES (26, 'zhaoniu', '123456', '趙牛', 28, 1, '1989-1-1', '2018-7-7 21:51:20', '2018-7-7 21:51:20');
2建立一個ssmDemo專案(專案名稱可以自定義),如圖所示:
建立好之後如下圖所示:
專案會報錯,不用急,為什麼呢?因為這是一個不完整的maven專案,缺少web.xml。
右鍵點選專案,如下操作,會自動補全web.xml檔案
3,向ssmzh專案中的pom.xml匯入spring-springmvc-mybatis整合所需要的依賴,具體依賴如下:
<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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.agu</groupId> <artifactId>SSMDemo</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <dependencies> <!--spring--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.13.RELEASE</version> </dependency> <!--配置webmvc--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.3.13.RELEASE</version> </dependency> <!--配置spring jdbc,用來載入DataSourceTransactionManager--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>4.3.13.RELEASE</version> </dependency> <!--配置切面的jar包--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>4.3.13.RELEASE</version> </dependency> <!--mybatis,用來載入SqlSessionFactoryBean和MapperScannerConfigurer--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.2.8</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency> <!--資料庫驅動包--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.32</version> </dependency> <!--日誌檔案--> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.22</version> </dependency> <!--json處理工具包--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.0</version> </dependency> <!-- 連線池,用來載入DruidDataSource--> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.9</version> </dependency> <!--javaScript標籤庫--> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> </dependency> </dependencies> <build> <plugins> <!-- 配置Tomcat外掛 --> <plugin> <groupId>org.apache.tomcat.maven</groupId> <artifactId>tomcat7-maven-plugin</artifactId> <configuration> <port>8080</port> <path>/</path> </configuration> </plugin> </plugins> </build> </project>
4,配置spring.xml(企業常用applicationContext.xml命名錶示是spring的配置,我這裡命名為spring.xml)
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!--開啟spring註解,掃描spring註解所在的包 --> <context:component-scan base-package="com.usermanage"/> <!-- 載入資原始檔 --> <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <!-- 配置資原始檔 --> <property name="locations"> <list> <value>classpath:jdbc.properties</value> </list> </property> </bean> <!--spring 配置連線池,資料來源 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="${driver}"></property> <property name="jdbcUrl" value="${url}"></property> <property name="user" value="${user}"></property> <property name="password" value="${passwd}"></property> </bean> </beans>
5,spring-tx(spring事務的配置)如下:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- 定義事務管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 定義事務策略 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!--所有以query開頭的方法都是隻讀的 --> <tx:method name="query*" read-only="true" /> <tx:method name="get*" read-only="true" /> <tx:method name="find*" read-only="true" /> <tx:method name="select*" read-only="true" /> <!--其他方法使用預設事務策略 --> <tx:method name="*" /> </tx:attributes> </tx:advice> <aop:config> <!--pointcut元素定義一個切入點,execution中的第一個星號 用以匹配方法的返回型別, 這裡星號表明匹配所有返回型別。 com.abc.dao.*.*(..)表明匹配cn.itcast.mybatis.service包下的所有類的所有 方法 --> <aop:pointcut id="myPointcut" expression="execution(* com.usermanage.service.*.*(..))" /> <!--將定義好的事務處理策略應用到上述的切入點 --> <aop:advisor advice-ref="txAdvice" pointcut-ref="myPointcut" /> </aop:config> </beans>
6,spring-mybatis.xml整合配置如下:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- spring整合Mybatis的配置,其實主要是mybatis的相應配置 --> <!-- sqlSession工廠 mapper的介面配置 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 載入全域性的配置檔案 --> <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property> <!-- 配置mapper的掃描,找到所有的mapper.xml對映檔案。編碼時放開註釋,如果放開需要在mapper中寫一個mapper也是可以的 --> <!-- <property name="mapperLocations" value="classpath:mybatis/mapper/*.xml"></property> --> <!-- 配置類型別名 --> <property name="typeAliasesPackage" value="com.usermanage.pojo"></property> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!--配置mapper介面所在路徑,掃描路徑下的所有的mapper介面 如果配置多個mapper的包,使用逗號進行分割 --> <!--在mybatis當中,dao層與mapper是一樣的,只是不同地方叫法不一樣,mapper.xml是寫sql的,是用來操作資料庫的 --> <property name="basePackage" value="cn.usermanage.dao,cn.usermanage.mapper" /> </bean> </beans>
7,springmvc.xml配置如下:
<?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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 配置推薦使用註解驅動,會預設的載入上面的兩個 HandlerMapping, HandlerAdapter --> <mvc:annotation-driven /> <!-- 開啟springmvc註解掃描 --> <context:component-scan base-package="cn.usermanage.controller"></context:component-scan> <!-- 這個是excelView的載入,原生態ssm不需要,所以這裡是可以省略的 --> <!-- <bean name="excelView" class="cn.usermanage.view.UserExcelView"></bean> --> <!-- 檢視解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 字首,這裡是請求的路徑檔案 --> <property name="prefix" value="/WEB-INF/views/"></property> <!-- 字尾 ,支援.jsp的請求--> <property name="suffix" value=".jsp"></property> </bean> <!-- 以上是原生態的ssm配置 --> <!-- 配置第二個檢視解析器 --> <!-- <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"> <property name="order" value="1"></property> </bean> --> <!-- 定義檔案上傳解析器 --> <!-- <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 設定預設編碼 <property name="defaultEncoding" value="UTF-8"></property> 設定檔案上傳的最大值5MB,5*1024*1024 <property name="maxUploadSize" value="5242880"></property> </bean> --> <!-- 解決靜態資源被攔截的問題 --> <!-- <mvc:default-servlet-handler/> --> </beans>
8,mybatis的配置如下:
<?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> <!-- 開啟駝峰匹配 --> <setting name="mapUnderscoreToCamelCase" value="true"/> </settings> <!-- 分頁助手 --> <plugins> <!-- com.github.pagehelper為PageHelper類所在包名 --> <plugin interceptor="com.github.pagehelper.PageHelper"> <!-- 資料庫方言 --> <property name="dialect" value="mysql"/> <!-- 設定為true時,使用RowBounds分頁會進行count查詢 會去查詢出總數 --> <property name="rowBoundsWithCount" value="true"/> </plugin> </plugins> </configuration>
9,Mybatis-generator的配置(這個需要請先安裝mybatis-generator外掛,然後即可),generatorConfig.xml配置如下:
<?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 > <!-- 資料庫jar包驅動路徑必須手動加上去 --> <classPathEntry location="D:\allworkspace\testspace\mybatis-zidong\src\main\resources\mybatis-generator\mysql-connector-java-5.1.25.jar" /> <!--資料庫名稱 --> <context id="test" > <!-- commentGenerator 去除自動生成的註釋 --> <commentGenerator> <property name="suppressAllComments" value="true" /> <property name="suppressDate" value="true" /> </commentGenerator> <!-- 資料庫驅動,連線,使用者名稱,密碼 --> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8" userId="root" password="123" /> <!-- pojo實體資訊 ,包名稱與專案名稱--> <javaModelGenerator targetPackage="com.usermanage.pojo" targetProject="mybatis-zidong/src/main/java" /> <!-- mapper資訊--> <sqlMapGenerator targetPackage="com.usermanage.mapper" targetProject="mybatis-zidong/src/main/java" /> <!-- dao介面 --> <javaClientGenerator targetPackage="com.usermanage.dao" targetProject="mybatis-zidong/src/main/java" type="XMLMAPPER" /> <!--表名 ,domainObjectName="Teacher"表示與資料庫所對應的實體--> <table schema="teacher" tableName="teacher" domainObjectName="Teacher" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> </context> </generatorConfiguration>
10.jdbc.properties配置如下:
driver=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=utf-8 user=root passwd=123456 11.log4j.properties日誌配置如下: log4j.rootLogger=DEBUG,A1 log4j.logger.org.mybatis=DEBUG log4j.appender.A1=org.apache.log4j.ConsoleAppender log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss,SSS} [%t] [%c]-[%p] %m%n 12,配置web.xml,具體如下: <?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_2_5.xsd" version="2.5"> <display-name>ssmzh</display-name> <!-- 載入spring相關配置 --> <context-param> <param-name>contextConfigLocation</param-name> <!-- 這裡使用的是以spring*.xml的萬用字元方式載入配置的 --> <param-value>classpath:spring/spring*.xml</param-value> </context-param> <!--Spring的ApplicationContext 載入 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 編碼過濾器,以UTF8編碼 --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF8</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 配置SpringMVC --> <servlet> <servlet-name>usermanage</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <!-- 指定載入外部的spring-mvc配置檔案 --> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/springmvc.xml</param-value> </init-param> <!-- 這個可以不配,可以省略 --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>usermanage</servlet-name> <!-- 攔截所有的請求,除了jsp。 /xx.html js css 會 --> <url-pattern>/</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
結構圖所下:
啟動專案輸入:http://www.localhost:8080/SSMDemo/user/list
執行結果如下圖:
那麼到此:一個完整的spring-springmvc-mybatis的整合框架就搭建好了,也許你覺得很複雜,那麼這只是一個框架的開始,這個是必須要會的,不論怎麼樣,一定要多親自搭建,一次,兩次甚至更多,如果連這個基本框架都覺得難,那麼你是否也在想應該放棄了。不管哪個行業都有它的難處,要想獲得更高必須比別人付出更多。