🥳🥳Welcome Huihui's Code World ! !🥳🥳
接下来看看由辉辉所写的关于SpringMVC的相关操作吧
目录
🥳🥳Welcome Huihui's Code World ! !🥳🥳
效果演示
一.导入项目的相关依赖
二.添加框架的配置文件
generatorConfig.xml
jdbc.properties
log4j2.xml
Spring-context.xml
Spring-mvc.xml
SpringMVCzy.xml
三.工具类
PagBean
PageTag
StringUtils
四.逆向生成代码
1.发布项目
2.生成代码
五.编写后台代码
biz
web
六.前台代码编写
index.jsp
edit.jsp
效果演示
一.导入项目的相关依赖
将项目需要用到的插件以及依赖导入到pom.xml中
<?xml version="1.0" encoding="UTF-8"?><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>org.example</groupId><artifactId>WHzyssm</artifactId><version>1.0-SNAPSHOT</version><packaging>war</packaging><name>Spring-Mybatis Maven Webapp</name><!-- FIXME change it to the project's website --><url>http://www.example.com</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target><maven.compiler.plugin.version>3.7.0</maven.compiler.plugin.version><!--添加jar包依赖--><!--1.spring 5.0.2.RELEASE相关--><spring.version>5.0.2.RELEASE</spring.version><!--2.mybatis相关--><mybatis.version>3.4.5</mybatis.version><!--mysql--><mysql.version>5.1.44</mysql.version><!--pagehelper分页jar依赖--><pagehelper.version>5.1.2</pagehelper.version><!--mybatis与spring集成jar依赖--><mybatis.spring.version>1.3.1</mybatis.spring.version><!--3.dbcp2连接池相关 druid--><commons.dbcp2.version>2.1.1</commons.dbcp2.version><commons.pool2.version>2.4.3</commons.pool2.version><!--4.log日志相关--><log4j2.version>2.9.1</log4j2.version><log4j2.disruptor.version>3.2.0</log4j2.disruptor.version><slf4j.version>1.7.13</slf4j.version><!--5.其他--><junit.version>4.12</junit.version><servlet.version>4.0.0</servlet.version><lombok.version>1.18.2</lombok.version><mybatis.ehcache.version>1.1.0</mybatis.ehcache.version><ehcache.version>2.10.0</ehcache.version><redis.version>2.9.0</redis.version><redis.spring.version>1.7.1.RELEASE</redis.spring.version><jackson.version>2.9.3</jackson.version><jstl.version>1.2</jstl.version><standard.version>1.1.2</standard.version><tomcat-jsp-api.version>8.0.47</tomcat-jsp-api.version><commons-fileupload.version>1.3.3</commons-fileupload.version><hibernate-validator.version>5.0.2.Final</hibernate-validator.version><shiro.version>1.3.2</shiro.version></properties><dependencies><!--1.spring相关--><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>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aspects</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>${spring.version}</version></dependency><!--2.mybatis相关--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>${mybatis.version}</version></dependency><!--mysql--><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version></dependency><!--pagehelper分页插件jar包依赖--><dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper</artifactId><version>${pagehelper.version}</version></dependency><!--mybatis与spring集成jar包依赖--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>${mybatis.spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId><version>${spring.version}</version></dependency><!--mybatis与ehcache整合--><dependency><groupId>org.mybatis.caches</groupId><artifactId>mybatis-ehcache</artifactId><version>${mybatis.ehcache.version}</version></dependency><!--ehcache依赖--><dependency><groupId>net.sf.ehcache</groupId><artifactId>ehcache</artifactId><version>${ehcache.version}</version></dependency><dependency><groupId>redis.clients</groupId><artifactId>jedis</artifactId><version>${redis.version}</version></dependency><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-redis</artifactId><version>${redis.spring.version}</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>${jackson.version}</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-core</artifactId><version>${jackson.version}</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-annotations</artifactId><version>${jackson.version}</version></dependency><!--3.dbcp2连接池相关--><dependency><groupId>org.apache.commons</groupId><artifactId>commons-dbcp2</artifactId><version>${commons.dbcp2.version}</version><exclusions><exclusion><artifactId>commons-pool2</artifactId><groupId>org.apache.commons</groupId></exclusion></exclusions></dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-pool2</artifactId><version>${commons.pool2.version}</version></dependency><!--springmvc依赖--><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version></dependency><!--4.log日志相关依赖--><!-- log4j2日志相关依赖 --><!-- log配置:Log4j2 + Slf4j --><!-- slf4j核心包--><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>${slf4j.version}</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>jcl-over-slf4j</artifactId><version>${slf4j.version}</version><scope>runtime</scope></dependency><!--核心log4j2jar包--><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-api</artifactId><version>${log4j2.version}</version></dependency><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-core</artifactId><version>${log4j2.version}</version></dependency><!--用于与slf4j保持桥接--><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-slf4j-impl</artifactId><version>${log4j2.version}</version></dependency><!--web工程需要包含log4j-web,非web工程不需要--><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-web</artifactId><version>${log4j2.version}</version><scope>runtime</scope></dependency><!--需要使用log4j2的AsyncLogger需要包含disruptor--><dependency><groupId>com.lmax</groupId><artifactId>disruptor</artifactId><version>${log4j2.disruptor.version}</version></dependency><!--5.其他--><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>${junit.version}</version> <!-- <scope>test</scope>--></dependency><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>${servlet.version}</version><scope>provided</scope></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>${lombok.version}</version><scope>provided</scope></dependency><dependency><groupId>jstl</groupId><artifactId>jstl</artifactId><version>${jstl.version}</version></dependency><dependency><groupId>taglibs</groupId><artifactId>standard</artifactId><version>${standard.version}</version></dependency><dependency><groupId>org.apache.tomcat</groupId><artifactId>tomcat-jsp-api</artifactId><version>${tomcat-jsp-api.version}</version></dependency><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>${commons-fileupload.version}</version></dependency><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-validator</artifactId><version>${hibernate-validator.version}</version></dependency><!--shiro依赖--><dependency><groupId>org.apache.shiro</groupId><artifactId>shiro-core</artifactId><version>${shiro.version}</version></dependency><dependency><groupId>org.apache.shiro</groupId><artifactId>shiro-web</artifactId><version>${shiro.version}</version></dependency><dependency><groupId>org.apache.shiro</groupId><artifactId>shiro-spring</artifactId><version>${shiro.version}</version></dependency></dependencies><build><resources><!--解决mybatis-generator-maven-plugin运行时没有将XxxMapper.xml文件放入target文件夹的问题--><resource><directory>src/main/java</directory><includes><include>**/*.xml</include></includes></resource><!--解决mybatis-generator-maven-plugin运行时没有将jdbc.properites文件放入target文件夹的问题--><resource><directory>src/main/resources</directory><includes><include>*.properties</include><include>*.xml</include></includes></resource></resources><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>${maven.compiler.plugin.version}</version><configuration><source>${maven.compiler.source}</source><target>${maven.compiler.target}</target><encoding>${project.build.sourceEncoding}</encoding></configuration></plugin><plugin><groupId>org.mybatis.generator</groupId><artifactId>mybatis-generator-maven-plugin</artifactId><version>1.3.2</version><dependencies><!--使用Mybatis-generator插件不能使用太高版本的mysql驱动 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version></dependency></dependencies><configuration><overwrite>true</overwrite></configuration></plugin><plugin><artifactId>maven-clean-plugin</artifactId><version>3.1.0</version></plugin><!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --><plugin><artifactId>maven-resources-plugin</artifactId><version>3.0.2</version></plugin><plugin><artifactId>maven-compiler-plugin</artifactId><version>3.8.0</version></plugin><plugin><artifactId>maven-surefire-plugin</artifactId><version>2.22.1</version></plugin><plugin><artifactId>maven-war-plugin</artifactId><version>3.2.2</version></plugin><plugin><artifactId>maven-install-plugin</artifactId><version>2.5.2</version></plugin><plugin><artifactId>maven-deploy-plugin</artifactId><version>2.8.2</version></plugin></plugins></build> </project>
二.添加框架的配置文件
generatorConfig.xml
这个文件用于生成Java代码。它包含了数据库连接信息、Java类型转换设置、JavaBean生成设置、SQL映射文件生成设置以及生成的表的结构等信息。通过这个配置文件,MyBatis Generator可以根据这些配置信息自动生成相应的Java实体类、Mapper接口以及XML映射文件
<?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><!-- 引入配置文件 --><properties resource="jdbc.properties"/><!--指定数据库jdbc驱动jar包的位置--><classPathEntry location="D:\tools\apache-maven-3.5.0-bin\mvn_localRepositor\mysql\mysql-connector-java\5.1.44\\mysql-connector-java-5.1.44.jar"/><!-- 一个数据库一个context --><context id="infoGuardian"><!-- 注释 --><commentGenerator><property name="suppressAllComments" value="true"/><!-- 是否取消注释 --><property name="suppressDate" value="true"/> <!-- 是否生成注释代时间戳 --></commentGenerator><!-- jdbc连接 --><jdbcConnection driverClass="${jdbc.driver}"connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}"/><!-- 类型转换 --><javaTypeResolver><!-- 是否使用bigDecimal, false可自动转化以下类型(Long, Integer, Short, etc.) --><property name="forceBigDecimals" value="false"/></javaTypeResolver><!-- 01 指定javaBean生成的位置 --><!-- targetPackage:指定生成的model生成所在的包名 --><!-- targetProject:指定在该项目下所在的路径 --><javaModelGenerator targetPackage="com.wh.model"targetProject="src/main/java"><!-- 是否允许子包,即targetPackage.schemaName.tableName --><property name="enableSubPackages" value="false"/><!-- 是否对model添加构造函数 --><property name="constructorBased" value="true"/><!-- 是否针对string类型的字段在set的时候进行trim调用 --><property name="trimStrings" value="false"/><!-- 建立的Model对象是否 不可改变 即生成的Model对象不会有 setter方法,只有构造方法 --><property name="immutable" value="false"/></javaModelGenerator><!-- 02 指定sql映射文件生成的位置 --><sqlMapGenerator targetPackage="com.wh.mapper"targetProject="src/main/java"><!-- 是否允许子包,即targetPackage.schemaName.tableName --><property name="enableSubPackages" value="false"/></sqlMapGenerator><!-- 03 生成XxxMapper接口 --><!-- type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象 --><!-- type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象 --><!-- type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口 --><javaClientGenerator targetPackage="com.wh.mapper"targetProject="src/main/java" type="XMLMAPPER"><!-- 是否在当前路径下新加一层schema,false路径com.oop.eksp.user.model, true:com.oop.eksp.user.model.[schemaName] --><property name="enableSubPackages" value="false"/></javaClientGenerator><table schema="" tableName="t_mvc_cat" domainObjectName="Cat"enableCountByExample="false" enableDeleteByExample="false"enableSelectByExample="false" enableUpdateByExample="false"></table></context> </generatorConfiguration>
jdbc.properties
这个配置文件是用来配置Java应用程序与MySQL数据库的连接信息的
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/mybatis_ssm?useUnicode=true&characterEncoding=UTF-8 jdbc.username=root jdbc.password=123456
log4j2.xml
这个配置文件是用于配置Log4j2的日志输出规则。Log4j2是一个用于Java应用程序的日志框架,它提供了灵活的日志记录功能
<?xml version="1.0" encoding="UTF-8"?><!-- status : 指定log4j本身的打印日志的级别.ALL< Trace < DEBUG < INFO < WARN < ERROR< FATAL < OFF。 monitorInterval : 用于指定log4j自动重新配置的监测间隔时间,单位是s,最小是5s. --> <Configuration status="WARN" monitorInterval="30"><Properties><!-- 配置日志文件输出目录 ${sys:user.home} --><Property name="LOG_HOME">/root/workspace/lucenedemo/logs</Property><property name="ERROR_LOG_FILE_NAME">/root/workspace/lucenedemo/logs/error</property><property name="WARN_LOG_FILE_NAME">/root/workspace/lucenedemo/logs/warn</property><property name="PATTERN">%d{yyyy-MM-dd HH:mm:ss.SSS} [%t-%L] %-5level %logger{36} - %msg%n</property></Properties><Appenders><!--这个输出控制台的配置 --><Console name="Console" target="SYSTEM_OUT"><!-- 控制台只输出level及以上级别的信息(onMatch),其他的直接拒绝(onMismatch) --><ThresholdFilter level="trace" onMatch="ACCEPT"onMismatch="DENY" /><!-- 输出日志的格式 --><!-- %d{yyyy-MM-dd HH:mm:ss, SSS} : 日志生产时间 %p : 日志输出格式 %c : logger的名称%m : 日志内容,即 logger.info("message") %n : 换行符 %C : Java类名 %L : 日志输出所在行数 %M: 日志输出所在方法名 hostName : 本地机器名 hostAddress : 本地ip地址 --><PatternLayout pattern="${PATTERN}" /></Console><!--文件会打印出所有信息,这个log每次运行程序会自动清空,由append属性决定,这个也挺有用的,适合临时测试用 --><!--append为TRUE表示消息增加到指定文件中,false表示消息覆盖指定的文件内容,默认值是true --><File name="log" fileName="logs/test.log" append="false"><PatternLayoutpattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" /></File><!-- 这个会打印出所有的info及以下级别的信息,每次大小超过size, 则这size大小的日志会自动存入按年份-月份建立的文件夹下面并进行压缩,作为存档 --><RollingFile name="RollingFileInfo" fileName="${LOG_HOME}/info.log"filePattern="${LOG_HOME}/$${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log"><!--控制台只输出level及以上级别的信息(onMatch),其他的直接拒绝(onMismatch) --><ThresholdFilter level="info" onMatch="ACCEPT"onMismatch="DENY" /><PatternLayoutpattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" /><Policies><!-- 基于时间的滚动策略,interval属性用来指定多久滚动一次,默认是1 hour。 modulate=true用来调整时间:比如现在是早上3am,interval是4,那么第一次滚动是在4am,接着是8am,12am...而不是7am. --><!-- 关键点在于 filePattern后的日期格式,以及TimeBasedTriggeringPolicy的interval, 日期格式精确到哪一位,interval也精确到哪一个单位 --><!-- log4j2的按天分日志文件 : info-%d{yyyy-MM-dd}-%i.log --><TimeBasedTriggeringPolicy interval="1"modulate="true" /><!-- SizeBasedTriggeringPolicy:Policies子节点, 基于指定文件大小的滚动策略,size属性用来定义每个日志文件的大小. --><!-- <SizeBasedTriggeringPolicy size="2 kB" /> --></Policies></RollingFile><RollingFile name="RollingFileWarn" fileName="${WARN_LOG_FILE_NAME}/warn.log"filePattern="${WARN_LOG_FILE_NAME}/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log"><ThresholdFilter level="warn" onMatch="ACCEPT"onMismatch="DENY" /><PatternLayoutpattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" /><Policies><TimeBasedTriggeringPolicy /><SizeBasedTriggeringPolicy size="2 kB" /></Policies><!-- DefaultRolloverStrategy属性如不设置,则默认为最多同一文件夹下7个文件,这里设置了20 --><DefaultRolloverStrategy max="20" /></RollingFile><RollingFile name="RollingFileError" fileName="${ERROR_LOG_FILE_NAME}/error.log"filePattern="${ERROR_LOG_FILE_NAME}/$${date:yyyy-MM}/error-%d{yyyy-MM-dd-HH-mm}-%i.log"><ThresholdFilter level="error" onMatch="ACCEPT"onMismatch="DENY" /><PatternLayoutpattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" /><Policies><!-- log4j2的按分钟 分日志文件 : warn-%d{yyyy-MM-dd-HH-mm}-%i.log --><TimeBasedTriggeringPolicy interval="1"modulate="true" /><!-- <SizeBasedTriggeringPolicy size="10 MB" /> --></Policies></RollingFile></Appenders><!--然后定义logger,只有定义了logger并引入的appender,appender才会生效 --><Loggers><!--过滤掉spring和mybatis的一些无用的DEBUG信息 --><logger name="org.springframework" level="INFO"></logger><logger name="org.mybatis" level="INFO"></logger><!-- 第三方日志系统 --><logger name="org.springframework" level="ERROR" /><logger name="org.hibernate" level="ERROR" /><logger name="org.apache.struts2" level="ERROR" /><logger name="com.opensymphony.xwork2" level="ERROR" /><logger name="org.jboss" level="ERROR" /><!-- 配置日志的根节点 --><root level="all"><appender-ref ref="Console" /><appender-ref ref="RollingFileInfo" /><appender-ref ref="RollingFileWarn" /><appender-ref ref="RollingFileError" /></root></Loggers></Configuration>
Spring-context.xml
这是一个Spring框架的配置文件,用于定义和管理Spring容器中的Bean。它使用XML格式来描述Bean的配置信息和依赖关系。通过这个配置文件,Spring框架可以自动扫描并加载应用程序中的Bean定义,并根据这些配置信息创建和管理Bean的实例。这样可以实现依赖注入、面向切面编程等特性
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"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.xsd"><import resource="classpath:SpringMVCzy.xml"></import></beans>
Spring-mvc.xml
这个配置文件是Spring MVC框架的XML配置文件,用于配置Spring MVC的各种组件和属性,其中做了这些操作:
- 扫描
com.wh
包及其子包下的控制器类,将它们注册为Spring MVC的控制器- 开启注解驱动的Spring MVC功能,这意味着可以使用基于注解的方式进行请求映射、数据绑定等操作
- 配置了一个视图解析器(ViewResolver),用于将控制器返回的逻辑视图名解析为实际的视图对象。这里使用了JSP视图技术,并指定了JSP文件存放在
/WEB-INF/jsp/
目录下- 注释掉了一些资源处理器的配置,这些配置可以用于处理静态资源(如图片、样式表、JavaScript文件等)的请求
<?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:context="http://www.springframework.org/schema/context"xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"><!--1) 扫描com.zking.zf及子子孙孙包下的控制器(扫描范围过大,耗时)--><context:component-scan base-package="com.wh"/><!--2) 此标签默认注册DefaultAnnotationHandlerMapping和AnnotationMethodHandlerAdapter --><mvc:annotation-driven /><!--3) 创建ViewResolver视图解析器 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><!-- viewClass需要在pom中引入两个包:standard.jar and jstl.jar --><property name="viewClass"value="org.springframework.web.servlet.view.JstlView"></property><property name="prefix" value="/WEB-INF/jsp/"/><property name="suffix" value=".jsp"/></bean><!--4) 单独处理图片、样式、js等资源 --><!-- <mvc:resources location="/static/" mapping="/static/**"/>--><!-- <mvc:resources location="/css/" mapping="/css/**"/><mvc:resources location="/js/" mapping="/js/**"/><mvc:resources location="WEB-INF/images/" mapping="/images/**"/>--><mvc:resources location="/common/" mapping="/jsp/**"/><aop:aspectj-autoproxy/> </beans>
SpringMVCzy.xml
这是一个Spring框架的XML配置文件,用于配置Spring应用程序的各种组件和属性。其中做了这些操作:
- 注解式开发:通过
<context:annotation-config/>
启用注解驱动的配置,允许使用注解来定义和管理Bean- 组件扫描:通过
<context:component-scan>
标签指定要扫描的包路径,以自动发现并注册Bean- 属性占位符:通过
<context:property-placeholder>
标签指定属性文件的位置,用于从外部属性文件中加载配置信息- 数据源配置:通过
<bean id="dataSource">
标签配置数据库连接池,包括驱动程序类名、URL、用户名、密码等属性- MyBatis整合:通过
<bean id="sqlSessionFactory">
和<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
配置MyBatis的SqlSessionFactory和Mapper接口扫描器,实现自动扫描和注册Mapper接口- 事务管理:通过
<bean id="transactionManager">
和<tx:annotation-driven>
配置事务管理器,将DataSource与事务管理器关联起来- AOP支持:通过
<aop:aspectj-autoproxy/>
启用AspectJ自动代理,支持面向切面编程
<?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:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"xmlns:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"><!--1. 注解式开发 --><!-- 注解驱动 --><context:annotation-config/><!-- 用注解方式注入bean,并指定查找范围:com.javaxl.ssm及子子孙孙包--><context:component-scan base-package="com.wh"/><context:property-placeholder location="classpath:jdbc.properties"/><bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"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}"/><!--初始连接数--><property name="initialSize" value="10"/><!--最大活动连接数--><property name="maxTotal" value="100"/><!--最大空闲连接数--><property name="maxIdle" value="50"/><!--最小空闲连接数--><property name="minIdle" value="10"/><!--设置为-1时,如果没有可用连接,连接池会一直无限期等待,直到获取到连接为止。--><!--如果设置为N(毫秒),则连接池会等待N毫秒,等待不到,则抛出异常--><property name="maxWaitMillis" value="-1"/></bean><!--4. spring和MyBatis整合 --><!--1) 创建sqlSessionFactory--><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><!-- 指定数据源 --><property name="dataSource" ref="dataSource"/><!-- 自动扫描XxxMapping.xml文件,**任意路径 --><property name="mapperLocations" value="classpath*:com/wh/**/mapper/*.xml"/><!-- 指定别名 --><property name="typeAliasesPackage" value="com/wh/**/model"/><!--配置pagehelper插件--><property name="plugins"><array><bean class="com.github.pagehelper.PageInterceptor"><property name="properties"><value>helperDialect=mysql</value></property></bean></array></property></bean><!--2) 自动扫描com/javaxl/ssm/**/mapper下的所有XxxMapper接口(其实就是DAO接口),并实现这些接口,--><!-- 即可直接在程序中使用dao接口,不用再获取sqlsession对象--><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><!--basePackage 属性是映射器接口文件的包路径。--><!--你可以使用分号或逗号 作为分隔符设置多于一个的包路径--><property name="basePackage" value="com/wh/**/mapper"/><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/></bean><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource" /></bean><tx:annotation-driven transaction-manager="transactionManager" /><aop:aspectj-autoproxy/> </beans>
三.工具类
PagBean
package com.wh.util;import java.util.HashMap; import java.util.Map;import javax.servlet.http.HttpServletRequest;/*** 分页工具类**/ public class PageBean {private int page = 1;// 页码private int rows = 10;// 页大小private int total = 0;// 总记录数private boolean pagination = true;// 是否分页private String url; //保存上一次请求的URLprivate Map<String,String[]> paramMap = new HashMap<>();// 保存上一次请求的参数/*** 初始化pagebean的,保存上一次请求的重要参数* @param req*/public void setRequest(HttpServletRequest req) { // 1.1 需要保存上一次请求的URLthis.setUrl(req.getRequestURL().toString()); // 1.2 需要保存上一次请求的参数 bname、pricethis.setParamMap(req.getParameterMap()); // 1.3 需要保存上一次请求的分页设置 paginationthis.setPagination(req.getParameter("pagination")); // 1.4 需要保存上一次请求的展示条目数this.setRows(req.getParameter("rows")); // 1.5 初始化请求的页码 pagethis.setPage(req.getParameter("page"));}public void setPage(String page) {if(StringUtils.isNotBlank(page))this.setPage(Integer.valueOf(page));}public void setRows(String rows) {if(StringUtils.isNotBlank(rows))this.setRows(Integer.valueOf(rows));}public void setPagination(String pagination) { // 只有在前台jsp填写了pagination=false,才代表不分页if(StringUtils.isNotBlank(pagination))this.setPagination(!"false".equals(pagination));}public String getUrl() {return url;}public void setUrl(String url) {this.url = url;}public Map<String, String[]> getParamMap() {return paramMap;}public void setParamMap(Map<String, String[]> paramMap) {this.paramMap = paramMap;}public PageBean() {super();}public int getPage() {return page;}public void setPage(int page) {this.page = page;}public int getRows() {return rows;}public void setRows(int rows) {this.rows = rows;}public int getTotal() {return total;}public void setTotal(int total) {this.total = total;}public void setTotal(String total) {this.total = Integer.parseInt(total);}public boolean isPagination() {return pagination;}public void setPagination(boolean pagination) {this.pagination = pagination;}/*** 获得起始记录的下标* * @return*/public int getStartIndex() {return (this.page - 1) * this.rows;}/*** 最大页* @return*/public int maxPage() { // total % rows == 0 ? total / rows : total / rows +1return this.total % this.rows == 0 ? this.total / this.rows : this.total / this.rows + 1;}/*** 下一页* @return*/public int nextPage() { // 如果当前页小于最大页,那就下一页为当前页+1;如果不小于,说明当前页就是最大页,那就无需+1return this.page < this.maxPage() ? this.page + 1 : this.page;}/*** 上一页* @return*/public int previousPage() {return this.page > 1 ? this.page - 1 : this.page;}@Overridepublic String toString() {return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", pagination=" + pagination + "]";}}
PageTag
package com.wh.tag;import com.wh.util.PageBean;import javax.servlet.jsp.JspException; import javax.servlet.jsp.JspWriter; import javax.servlet.jsp.tagext.BodyTagSupport; import java.io.IOException; import java.util.Map; import java.util.Map.Entry; import java.util.Set;public class PageTag extends BodyTagSupport{private PageBean pageBean;// 包含了所有分页相关的元素public PageBean getPageBean() {return pageBean;}public void setPageBean(PageBean pageBean) {this.pageBean = pageBean;}@Overridepublic int doStartTag() throws JspException { // 没有标签体,要输出内容JspWriter out = pageContext.getOut();try {out.print(toHTML());} catch (IOException e) {e.printStackTrace();}return super.doStartTag();}private String toHTML() {StringBuffer sb = new StringBuffer(); // 隐藏的form表单---这个就是上一次请求下次重新发的奥义所在 // 上一次请求的URLsb.append("<form action='"+pageBean.getUrl()+"' id='pageBeanForm' method='post'>");sb.append(" <input type='hidden' name='page'>"); // 上一次请求的参数Map<String, String[]> paramMap = pageBean.getParamMap();if(paramMap != null && paramMap.size() > 0) {Set<Entry<String, String[]>> entrySet = paramMap.entrySet();for (Entry<String, String[]> entry : entrySet) { // 参数名String key = entry.getKey(); // 参数值for (String value : entry.getValue()) { // 上一次请求的参数,再一次组装成了新的Form表单 // 注意:page参数每次都会提交,我们需要避免if(!"page".equals(key)) {sb.append(" <input type='hidden' name='"+key+"' value='"+value+"' >");}}}}sb.append("</form>");// 分页条sb.append("<ul class='pagination justify-content-center'>");sb.append(" <li class='page-item "+(pageBean.getPage() == 1 ? "disabled" : "")+"'><a class='page-link'");sb.append(" href='javascript:gotoPage(1)'>首页</a></li>");sb.append(" <li class='page-item "+(pageBean.getPage() == 1 ? "disabled" : "")+"'><a class='page-link'");sb.append(" href='javascript:gotoPage("+pageBean.previousPage()+")'><</a></li>");// less than 小于号 // sb.append(" <li class='page-item'><a class='page-link' href='#'>1</a></li>"); // sb.append(" <li class='page-item'><a class='page-link' href='#'>2</a></li>");sb.append(" <li class='page-item active'><a class='page-link' href='#'>"+pageBean.getPage()+"</a></li>");sb.append(" <li class='page-item "+(pageBean.getPage() == pageBean.maxPage() ? "disabled" : "")+"'><a class='page-link' href='javascript:gotoPage("+pageBean.nextPage()+")'>></a></li>");sb.append(" <li class='page-item "+(pageBean.getPage() == pageBean.maxPage() ? "disabled" : "")+"'><a class='page-link' href='javascript:gotoPage("+pageBean.maxPage()+")'>尾页</a></li>");sb.append(" <li class='page-item go-input'><b>到第</b><input class='page-link'");sb.append(" type='text' id='skipPage' name='' /><b>页</b></li>");sb.append(" <li class='page-item go'><a class='page-link'");sb.append(" href='javascript:skipPage()'>确定</a></li>");sb.append(" <li class='page-item'><b>共"+pageBean.getTotal()+"条</b></li>");sb.append("</ul>");// 分页执行的JS代码sb.append("<script type='text/javascript'>");sb.append(" function gotoPage(page) {");sb.append(" document.getElementById('pageBeanForm').page.value = page;");sb.append(" document.getElementById('pageBeanForm').submit();");sb.append(" }");sb.append(" function skipPage() {");sb.append(" var page = document.getElementById('skipPage').value;");sb.append(" if (!page || isNaN(page) || parseInt(page) < 1 || parseInt(page) > "+pageBean.maxPage()+") {");sb.append(" alert('请输入1~"+pageBean.maxPage()+"的数字');");sb.append(" return;");sb.append(" }");sb.append(" gotoPage(page);");sb.append(" }");sb.append("</script>");return sb.toString();} }
StringUtils
package com.wh.util;public class StringUtils {// 私有的构造方法,保护此类不能在外部实例化private StringUtils() {}/*** 如果字符串等于null或去空格后等于"",则返回true,否则返回false* * @param s* @return*/public static boolean isBlank(String s) {boolean b = false;if (null == s || s.trim().equals("")) {b = true;}return b;}/*** 如果字符串不等于null或去空格后不等于"",则返回true,否则返回false* * @param s* @return*/public static boolean isNotBlank(String s) {return !isBlank(s);}}
四.逆向生成代码
1.发布项目
2.生成代码
五.编写后台代码
biz
package com.wh.biz;import com.wh.model.Cat; import com.wh.util.PageBean;import java.util.List; public interface CatBiz {int deleteByPrimaryKey(Integer cid);int insert(Cat record);int insertSelective(Cat record);List<Cat> selectByPrimaryKey(Integer cid);List<Cat> selectLikePager(Cat cat,PageBean pageBean);int updateByPrimaryKeySelective(Cat record);int updateByPrimaryKey(Cat record); }
package com.wh.biz;import com.wh.mapper.CatMapper; import com.wh.model.Cat; import com.wh.util.PageBean; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;import java.util.List;/*** @author 王辉* @site www.shihuihuila.com* @create 2023-09-08 18:05*/ @Service public class CatBizImpl implements CatBiz {@Autowiredprivate CatMapper catBiz;@Overridepublic int deleteByPrimaryKey(Integer cid) {return catBiz.deleteByPrimaryKey(cid);}@Overridepublic int insert(Cat record) {return catBiz.insert(record);}@Overridepublic int insertSelective(Cat record) {return catBiz.insertSelective(record);}@Overridepublic List<Cat> selectByPrimaryKey(Integer cid) {return catBiz.selectByPrimaryKey(cid);}@Overridepublic List<Cat> selectLikePager(Cat cat, PageBean pageBean) {return catBiz.selectLikePager(cat);}@Overridepublic int updateByPrimaryKeySelective(Cat record) {return catBiz.updateByPrimaryKeySelective(record);}@Overridepublic int updateByPrimaryKey(Cat record) {return catBiz.updateByPrimaryKey(record);} }
web
package com.wh.web;import com.wh.biz.CatBiz; import com.wh.model.Cat; import com.wh.util.PageBean; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping;import javax.servlet.http.HttpServletRequest; import java.util.List;/*** @author 王辉* @site www.shihuihuila.com* @create 2023-09-08 18:08*/ @Controller @RequestMapping("/smvc3") @Slf4j public class CatController {@Autowiredprivate CatBiz catBiz;//增@RequestMapping("/add")public String add(Cat cat){catBiz.insertSelective(cat);return "redirect:list";}// 删@RequestMapping("/del")public String del(Cat cat){catBiz.deleteByPrimaryKey(cat.getCid());return "redirect:list";}// 改@RequestMapping("/upd")public String upd(Cat cat){catBiz.updateByPrimaryKeySelective(cat);return "redirect:list";}// 查@RequestMapping("/list")public String list(Cat cat, HttpServletRequest request){PageBean pageBean=new PageBean();List<Cat> cats = catBiz.selectLikePager(cat, pageBean);request.setAttribute("list",cats);request.setAttribute("pageBean",pageBean);return "index";}//数据回显@RequestMapping("/preSave")public String preSave(Cat cat, Model model){if(cat!=null && cat.getCid()!=null){List<Cat> cats = catBiz.selectByPrimaryKey(cat.getCid());model.addAttribute("c",cats.get(0));}return "edit";}}
六.前台代码编写
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%> <%@ taglib uri="http://jsp.veryedu.cn" prefix="z"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><linkhref="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.css"rel="stylesheet"><scriptsrc="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.0/js/bootstrap.js"></script><title>博客列表</title><style type="text/css">.page-item input {padding: 0;width: 40px;height: 100%;text-align: center;margin: 0 6px;}.page-item input, .page-item b {line-height: 38px;float: left;font-weight: 400;}.page-item.go-input {margin: 0 10px;}</style> </head> <body> <form class="form-inline"action="${pageContext.request.contextPath }/smvc3/list" method="post"><div class="form-group mb-2"><input type="text" class="form-control-plaintext" name="cname"placeholder="请输入书籍名称"><!-- <input name="rows" value="20" type="hidden"> --><!-- 不想分页 --><input name="pagination" value="false" type="hidden"></div><button type="submit" class="btn btn-primary mb-2">查询</button><a class="btn btn-primary mb-2" href="${pageContext.request.contextPath }/smvc3/preSave">新增</a> </form><table class="table table-striped "><thead><tr><th scope="col">猫咪ID</th><th scope="col">猫咪名字</th><th scope="col">猫咪年龄</th><th scope="col">操作</th></tr></thead><tbody><c:forEach var="b" items="${list }"><tr><td>${b.cid }</td><td>${b.cname }</td><td>${b.age }</td><td><a href="${pageContext.request.contextPath }/smvc3/preSave?cid=${b.cid}">修改</a><a href="${pageContext.request.contextPath }/smvc3/del?cid=${b.cid}">删除</a></td></tr></c:forEach></tbody> </table> <!-- 这一行代码就相当于前面分页需求前端的几十行了 --> <z:page pageBean="${pageBean }"></z:page></body> </html>
edit.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>编辑界面</title> </head> <body> <form action="${pageContext.request.contextPath }/${empty c ? 'smvc3/add' : 'smvc3/upd'}" method="post"><c:forEach var="b" items="${c }">猫咪id:<input type="text" name="cid" value="${b.cid }"><br>猫咪姓名:<input type="text" name="cname" value="${b.cname }"><br>猫咪年龄:<input type="text" name="age" value="${b.age }"><br><input type="submit"></c:forEach> </form> </body> </html>
好啦,今天的分享就到这了,希望能够帮到你呢!😊😊