🥳🥳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"> <PatternLayout pattern="%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}/$${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log"> <!--控制台只输出level及以上级别的信息(onMatch),其他的直接拒绝(onMismatch) --> <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY" /> <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" /> <Policies> <!-- 基于时间的滚动策略,interval属性用来指定多久滚动一次,默认是1 hour。 modulate=true用来调整时间:比如现在是早上3am,interval是4,那么第一次滚动是在4am,接着是8am,12am...而不是7am. --> <!-- 关键点在于 filePattern后的日期格式,以及TimeBasedTriggeringPolicy的interval, 日期格式精确到哪一位,interval也精确到哪一个单位 --> <!-- log4j2的按天分日志文件 : info-%d{yyyy-MM-dd}-%i.log --> <TimeBasedTriggeringPolicy interval="1" modulate="true" /> <!-- SizeBasedTriggeringPolicy:Policies子节点, 基于指定文件大小的滚动策略,size属性用来定义每个日志文件的大小. --> <!-- <SizeBasedTriggeringPolicy size="2 kB" /> --> </Policies> </RollingFile> <RollingFile name="RollingFileWarn" fileName="${WARN_LOG_FILE_NAME}/warn.log" filePattern="${WARN_LOG_FILE_NAME}/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log"> <ThresholdFilter level="warn" onMatch="ACCEPT" onMismatch="DENY" /> <PatternLayout pattern="%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" /> <PatternLayout pattern="%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.xsd http://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URL private 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URL this.setUrl(req.getRequestURL().toString()); // 1.2 需要保存上一次请求的参数 bname、price this.setParamMap(req.getParameterMap()); // 1.3 需要保存上一次请求的分页设置 pagination this.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 page this.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 +1 return 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+1 return 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; } @Override public 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; } @Override public 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URL sb.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 { @Autowired private CatMapper catBiz; @Override public int deleteByPrimaryKey(Integer cid) { return catBiz.deleteByPrimaryKey(cid); } @Override public int insert(Cat record) { return catBiz.insert(record); } @Override public int insertSelective(Cat record) { return catBiz.insertSelective(record); } @Override public List<Cat> selectByPrimaryKey(Integer cid) { return catBiz.selectByPrimaryKey(cid); } @Override public List<Cat> selectLikePager(Cat cat, PageBean pageBean) { return catBiz.selectLikePager(cat); } @Override public int updateByPrimaryKeySelective(Cat record) { return catBiz.updateByPrimaryKeySelective(record ); } @Override public 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 { @Autowired private 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"> <link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.css" rel="stylesheet"> <script src="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!😊😊