用 eclipse 创建一个简单的 meaven spring springMvc mybatis 项目
下面是整体步骤:
1: 先创建一个Maven 项目:
选择跳过骨架:
因为要搭建的是 web 项目 所以这个地方选择 war 包;
点击完成 这样就完成 Maven项目的搭建:
接下俩 先把 Maven的pom.xml 需要的依赖 添加上:
<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.etoak</groupId> <artifactId>mssm02</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.build.timestamp.format>yyyyMMddHHmmss</maven.build.timestamp.format> <spring.version>4.2.5.RELEASE</spring.version> <mybatis.version>3.4.4</mybatis.version> <mybatisspring.version>1.3.1</mybatisspring.version> <jackson.version>2.7.0</jackson.version> <log4j.version>1.2.17</log4j.version> <slf4j.version>1.7.7</slf4j.version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <!-- javaEE --> <dependency> <groupId>javax</groupId> <artifactId>javaee-api</artifactId> <version>7.0</version> </dependency> <dependency> <groupId>javax</groupId> <artifactId>javaee-web-api</artifactId> <version>7.0</version> </dependency> <!-- servlet start --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- servlet end --> <!-- spring start --> <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>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-jpa</artifactId> <version>1.10.1.RELEASE</version> </dependency> <!-- spring end --> <!-- mybatis start --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>${mybatisspring.version}</version> </dependency> <!-- mybatis end --> <!-- 数据库 start --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.29</version> </dependency> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.4</version> </dependency> <dependency> <groupId>com.oracle</groupId> <artifactId>ojdbc14</artifactId> <version>10.2.0.4.0</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.35</version> </dependency> <!-- 数据库 end --> <!-- servlet start --> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>3.0-alpha-1</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- servlet end --> <!-- json start (fastjson & jackjson) --> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.9.13</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.31</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</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-databind</artifactId> <version>${jackson.version}</version> </dependency> <!-- json end --> <!-- log4j start --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</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.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>5.2.4.Final</version> </dependency> <!-- log4j end --> <!-- 上传组件包 start --> <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>1.10</version> </dependency> <!-- 上传组件包 end --> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.6.1</version> <configuration> <skipTests>true</skipTests> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> <finalName>mssm02</finalName> <!-- 这里是 项目名 --> </build> </project>
如果 看到 pom.xml 报错的话 ; 看一下 报什么错;
这里说: web.xml is missing and <failOnMissingWebXml> is set to true ;
翻译一下: web.xml 文件 缺失 并且 <缺失webxml就失败> 这个元素被设为 true ; 所以会报错:
因为咱们开头的时候 是 跳过 使用骨架 所以 现在目录结构中没有 web.xml文件; 所以下一步就把项目转成动态web 项目:
2: 把项目转换成 动态web 项目:
这里要要分两步 进行:
第一步 先 选定 java的版本 和 JavaScript 的版本: 这里选择 java 1.8 ; javaScript 1.0 然后 点击 应用 和 确定并关闭 ; 注意 一定要关闭;
第二步 再选定 DynimicWebModule 这里选择 3.1
两步分开 才能出现 下一个界面: 会提示要不要进一步配置: 然后 提示 可以配置xml 文件:
点击确定之后: 再看一下项目结构 有什么变化:
如果 没有出现上面的变化 ; 重新操作一遍;
这样会面临一个问题: 有两个web目录: 一个是: webContent 目录: 一个是 webapp目录 : 很显然 如果 有两个 web 目录 就显得比较乱; 如果 两个只保留一个 ;你会选择保留哪一个? 为什么?
我这里选择保留 webapp 原因: webapp 看起来 要比 webContent 要顺眼一些 ; [这样的理由也可以呀!] 确实: webapp 和 java ;resources 这些是同一个目录结构 所以: 保留webapp 整个目录结构 就很统一; 这就是我觉得 webapp 看起来 要顺眼的原因:
然后就是 拆迁工程了:
拆迁完之后的项目结构如下:
发现了没? 拆迁完之后 又报错了 而且 还是同样的错误 找不到 web.xml文件:
上次找不到web.xml文件 真的是hi没有web.xml文件; 这次找不到 可不是 真的没有; 而是有但它还是报说找不到; 为什么呢? 明明有 , 但它却说没有;
会不会是路径 不对 导致没有找到?
来看一下 目录路径: 找这个部署 路径
发现了没? 这个路径还是拆迁之前的路径: 修改一下路径试试
把 无用的都移除掉; 然后把新的路径 添加上:
然后回头再看一下 还报错不? 如果 还报错 就需要把pom.xml文件 全部剪贴 然后 再粘贴 一下试试 ; 这样操作一下 就会没事的;
至此 : web 项目 的架构也搭建好了:
3: 配置 spring , spring Mvc , Mybatis 配置文件;
按照什么顺序配置呢?
首先肯定是先配置: web.xml 这个是web容器的配置:
项目启动的时候 先启动它(web容器) 然后 它再去加载初始化项:以此启动监听器 过滤器 拦截器 等;
那就按照这个启动时间的顺序 去配置这些 配置文件:
先配置 web.xml: 根据 web.xml 把目录结构也配置上;
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> <display-name>mssm02</display-name> <welcome-file-list> <welcome-file>/index.jsp</welcome-file> </welcome-file-list> <!-- 加載順序: 上下文参数 >>> 监听器 >>> 过滤器 >>> 拦截器 --> <!-- 日志记录 --> <context-param> <!-- 日志配置文件路径 --> <param-name>log4jConfigLocation</param-name> <param-value>classpath:config/properties/log4j.properties</param-value> </context-param> <context-param> <!-- 日志页面的刷新间隔 --> <param-name>log4jRefreshInterval</param-name> <param-value>6000</param-value> </context-param> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:config/xml/application.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <filter> <filter-name>encoding</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>encoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 放行资源 文件 --> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.js</url-pattern> <url-pattern>*.css</url-pattern> <url-pattern>/assets/*"</url-pattern> <url-pattern>/images/*</url-pattern> </servlet-mapping> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:config/xml/spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> <async-supported>true</async-supported> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <session-config> <session-timeout>60</session-timeout> </session-config> </web-app>
下面是配置好的目录结构:
下面是把折叠的都展开的项目结构:
下面是配置文件的代码:
application.xml
<?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" 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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd "> <!-- 上面 虽然没有标注版本号 ; 但spring可以自动配置最合适的版本号 --> <!-- 采用注释的方式配置bean --> <context:annotation-config /> <!-- 自动扫描注解 --> <context:component-scan base-package="com.etoak.mssm" /> <!--导入DAO配置 --> <import resource="mybatis-dao.xml"/> <!--导入数据库配置 --> <import resource="mybatis-db.xml"/> <!--导入数据库事务配置 --> <import resource="spring-tx.xml"/> </beans>
mybatis-dao.xml
<?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" 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 "> <!-- mapper扫描配置扫描器 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 扫描com.etoak.mssm这个包以及它的子包下的所有映射接口类 --> <property name="basePackage" value="com.etoak.mssm.emp.dao" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> <!-- 如果报错Invalid bound statement (not found): 请参考: https://my.oschina.net/psuyun/blog/464851 --> </bean> </beans>
mybatis-db.xml
<?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" 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 "> <!-- 加载oracle.properties文件中的内容 --> <context:property-placeholder location="classpath*:config/properties/oracle.properties" /> <!-- 配置数据源,--> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${driver}" /> <property name="url" value="${url}" /> <property name="username" value="${username}" /> <property name="password" value="${password}" /> <!-- 初始化连接大小 --> <property name="initialSize" value="${initialSize}"></property> <!-- 连接池最大数量 --> <property name="maxActive" value="${maxActive}"></property> <!-- 连接池最大空闲 --> <property name="maxIdle" value="${maxIdle}"></property> <!-- 连接池最小空闲 --> <property name="minIdle" value="${minIdle}"></property> <!-- 获取连接最大等待时间 --> <property name="maxWait" value="${maxWait}"></property> </bean> <!-- 配置sqlSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /><!-- 实例化sqlSessionFactory时需要使用上述配置好的数据源以及SQL映射文件 --> <property name="mapperLocations" value="classpath*:mybatis/mappers/**/*.xml" /><!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 --> </bean> <!-- 定义SqlSessionTemplate --> <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlSessionFactory"></constructor-arg> </bean> <!-- SqlSession:用于执行持久化操作的对象,类似于jdbc中的Connection。 --> <!-- SqlSessionFactory:创建SqlSession实例的工厂 --> <!-- SqlSessionFactoryBuilder:build方法创建SqlSessionFactory实例。 --> <!-- SqlSessionTemplate:MyBatis提供的持久层访问模板化的工具,线程安全,可通过构造参数或依赖注入SqlSessionFactory实例。 --> </beans>
spring-tx.xml
<?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" 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/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd "> <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> </beans>
spring-mvc.xml
<?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" 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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd" > <!-- 开启注解模式驱动 --> <mvc:annotation-driven></mvc:annotation-driven> <!-- 自动扫描web包 ,将带有注解的类 纳入spring容器管理 --> <context:component-scan base-package="com.etoak.mssm"/> <mvc:resources location="/WEB-INF/pages/" mapping="/pages/**"/> <!-- 视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"/> <property name="suffix" value=".jsp"/> </bean> <!-- 解决 IE浏览器 不能正常解析 json 问题 --> <mvc:annotation-driven> <mvc:message-converters register-defaults="true"> <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/plain;charset=utf-8</value> <value>application/json;charset=utf-8</value> <value>application/x-www-form-urlencoded</value> </list> </property> </bean> </mvc:message-converters> </mvc:annotation-driven> <!--配置静态资源映射,防止静态资源被拦截后导致controller返回的页面的js,css失效 --> <!-- <mvc:resources location="/static/css/" mapping="/css/**"></mvc:resources> <mvc:resources location="/static/js/" mapping="/js/**"></mvc:resources> <mvc:resources location="/static/images/" mapping="/images/**"/> --> </beans>
properties:
log4j.rootLogger=DEBUG,Console,Stdout
#[Level] DEBUG
log4j.logger.java.sql.ResultSet=INFO
log4j.logger.org.apache=INFO
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG
#Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
#stdout
log4j.appender.Stdout = org.apache.log4j.DailyRollingFileAppender
log4j.appender.Stdout.File = E://logs/log.log
log4j.appender.Stdout.Append = true
log4j.appender.Stdout.Threshold = DEBUG
log4j.appender.Stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.Stdout.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
oracle.properties
driver=oracle.jdbc.driver.OracleDriver
url=jdbc:oracle:thin:@127.0.0.1:1521:orcl
username=scott
password=tiger
initialSize=0
maxActive=20
maxIdle=20
minIdle=1
maxWait=60000
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; String welcomeHomePagePath = basePath+"welcome/welcomeHome"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"></base> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>indexPage</title> </head> <body> HelloWorld! This is the index page . <br/> <br/> <a href="<%=welcomeHomePagePath %>">Click me to go to welcomeHome page</a> </body> </html>
开猫 ;正常启动: 出现了下面的页面:
至此 说明 Maven spring springMVC Mybatis 框架 已经搭建好; 而且 Maven spring 已经能正常使用;
下面 将进一步 测试 spring MVC 和 mybatis 是否能正常使用;
4: 测试 spring MVC 能否 正常使用
写 controller
WelcomeController.java
package com.etoak.mssm.common.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; @Controller @RequestMapping(value="/welcome") public class WelcomeController { @RequestMapping(value="/welcomeHome",method=RequestMethod.GET) public String index(){ System.out.println("进来了!"); return "welcome/welcomeHome"; } }
完成 页面: welcomeHome.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; String empHomePagePath = basePath+"emp/empHome"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"></base> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>welcomeHomePage</title> </head> <body> This is welcomeHome page . <br/> <br/> <a href="<%=empHomePagePath %>">Click me to go to Emp Home Page </a> </body> </html>
开猫 测试一下:
点击跳转进来了. 这就说明controller 起作用了; spring MVC 配置好了;
这里可能会有疑问:
index.jsp 和 welcomeHome.jsp 有什么区别?(也就是说 能从indx.jsp 跳转到 welcomeHome.jsp 就说明 springMVC 配置好了么?)
1: 访问的机制不一样: index.jsp 位于 webapp 目录下面 跟 WEB-INF是平级的; 可以通过URL 直接访问;
welcomeHome.jsp 位于 WEB-INF 里面 只能通过 拦截器 控制跳转来访问;
所以 通常的目录结构中, 都会把 page页面放在 WEB-INF 里面 以确保安全;
5:下面来验证 mybatis 是否配置好了;
mybatis 涉及到 dao, mapper, service ,外加 test 测试案例 所以包结构如下:;
先写service 层:
如图: service 层 分两个包 一个是接口 一个是实现类;
先写接口:
这里的增删该查的参数都是Emp; 是不是有疑问? 如果说增 和 改 的参数是Emp 还好理解, 为什么 删和查也要是 Emp 呢?
这个对于初学者 可能会有点疑问;等有经验之后,你就会明白了.这里我也先说一下为什么.
1: 首先: 删除 的 ID 和 查询的 ID 本身就是Emp的ID 这个没有异议吧? 既然是Emp 的ID ,那我就可以 emp 来替代Emp的ID, 无非是mapper里面修改一下 对吧 (mapper 里面根据 传入的参数类型 来 组装 SQL ).
2: 在查询的时候会有条件查询; 而这些查询条件肯定都是emp的字段; 对吧. 这样的话 我就可以把条件塞进emp中; 只传一个参数就可以了,对吧.
3: 当然了 以上只是对单表查询来说 ;
package com.etoak.mssm.emp.service; import java.util.List; import com.etoak.mssm.emp.entity.Emp; public interface EmpService { public int addEmp(Emp emp); public int deleteEmp(Emp emp); public int updateEmp(Emp emp); public List<Emp> getEmps(Emp emp); public int getCount(Emp emp); }
package com.etoak.mssm.emp.service.impl; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.etoak.mssm.emp.dao.EmpDao; import com.etoak.mssm.emp.entity.Emp; import com.etoak.mssm.emp.service.EmpService; @Service public class EmpServeiceImpl implements EmpService { @Autowired //采用注解的方式 注入 enpDao private EmpDao empDao ; public int addEmp(Emp emp) { return empDao.addEmp(emp); } @Override public int deleteEmp(Emp emp) { return empDao.deleteEmp(emp); } @Override public int updateEmp(Emp emp) { return empDao.updateEmp(emp); } public List<Emp> getEmps(Emp emp) { return empDao.getEmps(emp); } @Override public int getCount(Emp emp) { return empDao.getCount(emp); } }
dao 层
package com.etoak.mssm.emp.dao; import java.util.List; import com.etoak.mssm.emp.entity.Emp; public interface EmpDao { public int addEmp(Emp emp); public int deleteEmp(Emp emp); public int updateEmp(Emp emp); public List<Emp> getEmps(Emp emp); public int getCount(Emp emp); }
mapper 注意 mapper 层的位置 一般都会把 mapper 写在 resource 里面 ,原因, 降低耦合度 ; 和 目录结构 清晰;
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" > <mapper namespace="com.etoak.mssm.emp.dao.EmpDao"> <resultMap id="EmpResultMap" type="com.etoak.mssm.emp.entity.Emp"> <id column="empno" property="empno" jdbcType="DOUBLE" /> <result column="ename" property="ename" jdbcType="VARCHAR" /> <result column="job" property="job" jdbcType="VARCHAR" /> <result column="mgr" property="mgr" jdbcType="DOUBLE" /> <result column="hiredate" property="hiredate" jdbcType="DATE" /> <result column="sal" property="sal" jdbcType="DOUBLE" /> <result column="comm" property="comm" jdbcType="DOUBLE" /> <result column="deptno" property="deptno" jdbcType="DOUBLE" /> </resultMap> <!-- CREATE SEQUENCE seqTest ; INCREMENT BY 1 每次加几个 ;START WITH 1 从1开始计数 ; NOMAXvalue 不设置最大值 ; NOCYCLE 一直累加,不循环 ; CACHE 10 缓存 10 ; - --> <!-- CREATE SEQUENCE seqEmp INCREMENT BY 1 START WITH 1000 NOMAXvalue NOCYCLE CACHE 10 --> <!-- 新增emp --> <insert id="addEmp" parameterType="com.etoak.mssm.emp.entity.Emp"> <!-- insert 元素 没有 resultType 属性: http://blog.csdn.net/a281246240/article/details/53463620 --> <selectKey resultType="java.lang.Integer" order="BEFORE" keyProperty="empno"> SELECT seqEmp.Nextval as EMPNO from DUAL </selectKey> insert into emp (empno,ename,job,mgr,hiredate,sal,comm,deptno) values(#{empno,jdbcType=DOUBLE},#{ename,jdbcType=VARCHAR},#{job,jdbcType=VARCHAR},#{mgr,jdbcType=DOUBLE},#{hiredate,jdbcType=DATE},#{sal,jdbcType=DOUBLE},#{comm,jdbcType=DOUBLE},#{deptno,jdbcType=DOUBLE}) </insert> <!-- 删除emp --> <delete id="deleteEmp" parameterType="com.etoak.mssm.emp.entity.Emp"> delete from emp where empno = #{empno} </delete> <!-- 修改emp --> <update id="updateEmp" parameterType="com.etoak.mssm.emp.entity.Emp"> update emp <set> <if test="ename != null and ename != ''"> ename = #{ename}, </if> <if test="job != null and job != ''"> job = #{job}, </if> <if test="mgr != null and mgr != ''"> mgr = #{mgr}, </if> <if test="hiredate != null "> hiredate = #{hiredate}, </if> <if test="sal != null and sal != ''"> sal = #{sal}, </if> <if test="comm != null and comm != ''"> comm = #{comm}, </if> <if test="deptno != null and deptno != ''"> deptno = #{deptno} </if> </set> where empno = #{empno} </update> <!-- 查看所有的Emp --> <select id="getEmps" parameterType="com.etoak.mssm.emp.entity.Emp" resultMap="EmpResultMap"> select b.* from ( select a.*, rownum rn from ( select * from emp where 1 = 1 <if test="empno != null and empno != ''"> and instr(empno,#{empno}) > 0 </if> <if test="ename != null and ename != ''"> and instr(ename,#{ename}) > 0 </if> <if test="job != null and job != ''"> and instr(job,#{job}) > 0 </if> <if test="mgr != null and mgr != ''"> and instr(mgr,#{mgr}) > 0 </if> <if test="hiredate != null and hiredate != ''"> and hiredate = #{hiredate} </if> <if test="sal != null and sal != ''"> and instr(sal,#{sal}) > 0 </if> <if test="comm != null and comm != ''"> and instr(comm,#{comm}) > 0 </if> <if test="deptno != null and deptno != ''"> and instr(deptno,#{deptno}) > 0 </if> ) a where 1 = 1 <if test="endSize != null and endSize != ''"> and rownum < #{endSize} </if> ) b where 1 = 1 <if test="startSize != null and startSize != ''"> and b.rn >= #{startSize} </if> </select> <select id="getCount" parameterType="com.etoak.mssm.emp.entity.Emp" resultType="java.lang.Integer"> select count(*) from emp where 1 = 1 <if test="empno != null and empno != ''"> and instr(empno,#{empno}) > 0 </if> <if test="ename != null and ename != ''"> and instr(ename,#{ename}) > 0 </if> <if test="job != null and job != ''"> and instr(job,#{job}) > 0 </if> <if test="mgr != null and mgr != ''"> and instr(mgr,#{mgr}) > 0 </if> <if test="hiredate != null and hiredate != ''"> and hiredate = #{hiredate} </if> <if test="sal != null and sal != ''"> and instr(ename,#{ename}) > 0 </if> <if test="comm != null and comm != ''"> and instr(ename,#{ename}) > 0 </if> <if test="deptno != null and deptno != ''"> and instr(ename,#{ename}) > 0 </if> </select> </mapper>
接下来是 测试 案例:
package com.etoak.mssm.emp.test; import java.util.Date; import java.util.List; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import com.etoak.mssm.emp.entity.Emp; import com.etoak.mssm.emp.service.EmpService; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = { "classpath:config/xml/application.xml" })// 如果报错:程序包org.junit不存在 参考: http://www.cnblogs.com/LiuChunfu/p/5598367.html public class TestCase { @Autowired private EmpService empService; @org.junit.Test public void getOne() { Emp emp = new Emp(); emp.setEmpno(7369); List<Emp> list = empService.getEmps(emp); System.out.println("getOne : "+list); } @org.junit.Test public void getAll() { Emp emp = new Emp(); //emp.setEmpno(7369); List<Emp> list = empService.getEmps(emp); System.out.println("getAll : "+list); } @org.junit.Test public void addOne(){ Emp emp = new Emp(); // emp.setEmpno(7300); emp.setComm(0); emp.setDeptno(10); emp.setEname("张三"); emp.setJob("CEO"); emp.setMgr(0); emp.setSal(1); emp.setHiredate(new Date()); int i = empService.addEmp(emp); System.out.println("addOne : "+i); } }
至此:Mybatis 也配置好了;
接下来 咱们的目标是写一个增删改查的页面:
前端使用 bootStrap 吧 ; 这个好看;
下面是整体效果:
1: 打开之后界面
2;条件查询界面:
3:新增或编辑页面
再看具体的代码:
先写页面吧;
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; String empHomePagePath = basePath + "emp/empHome"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"></base> <!-- 绝对路径 有这个之后 后面的都可以是相对路径 --> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>empHomePage</title> <!-- 引入 bootStrap --> <link rel="stylesheet" style="text/css" href="static/common/bootstrap/css/bootstrap-theme.min.css" /> <link rel="stylesheet" style="text/css" href="static/common/bootstrap/css/bootstrap.min.css" /> <!-- 引入 bootStrap-table --> <link rel="stylesheet" style="text/css" href="static/common/bootstrap-table/css/bootstrap-table.min.css" /> <!-- 引入 bootStrap-datatimepicker --> <link rel="stylesheet" style="text/css" href="static/common/bootstrap-datetimepicker/css/bootstrap-datetimepicker.min.css" /> </head> <body> This is empHome page . <br /> <br /> <div class="panel-body" style="padding-bottom: 0px;"> <div class="panel panel-primary"> <!-- 查询条件 div start --> <div class="panel-heading">查询条件</div> <div class="panel-body"> <form id="formSearch" class="form-horizontal"> <div class="form-group" style="margin-top: 15px"> <label class="control-label col-sm-1" for="query_empno">员工编号</label> <div class="col-sm-1"> <input type="text" class="form-control" id="query_empno"> </div> <label class="control-label col-sm-1" for="query_ename">员工姓名</label> <div class="col-sm-1"> <input type="text" class="form-control" id="query_ename"> </div> <label class="control-label col-sm-1" for="query_job">工作岗位</label> <div class="col-sm-1"> <input type="text" class="form-control" id="query_job"> </div> <label class="control-label col-sm-1" for="query_deptno">部门编号</label> <div class="col-sm-1"> <input type="text" class="form-control" id="query_deptno"> </div> <label class="control-label col-sm-1" for="query_mgr">直接领导</label> <div class="col-sm-1"> <input type="text" class="form-control" id="query_mgr"> </div> <div class="col-sm-2" style="text-align: left;"> <button type="button" style="margin-left: 50px" id="btn_query" class="btn btn-primary">查询</button> </div> </div> </form> </div> </div> <!-- 查询条件 div end --> <div id="toolbar" class="btn-group"> <!-- 按钮组 div start --> <button id="btn_add" type="button" class="btn btn-default"> <span class="glyphicon glyphicon-plus" aria-hidden="true"></span>新增 </button> <button id="btn_edit" type="button" class="btn btn-default"> <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span>修改 </button> <button id="btn_delete" type="button" class="btn btn-default"> <span class="glyphicon glyphicon-remove" aria-hidden="true"></span>删除 </button> </div> <!-- 按钮组 div end --> <table id="tb_emp"></table> <!-- 表格 div start --> </div> <!-- 新增和修改 都可以使用 --> <div class="modal fade bs-example-modal-lg" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"> <!-- 编辑模态框 start --> <div class="modal-dialog modal-lg"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <h4 class="modal-title" id="myModalLabel"></h4> </div> <div class="modal-body"> <div class="panel panel-primary"> <div class='panel-heading'> <h3 class='panel-title'>员工信息:</h3> </div> <div class="panel-body"> <form role="form"> <!-- form 表单 start --> <div class="form-group" style="padding: 10px 5px 15px 20px;"> <div class="col-sm-6"> <label for="new_ename">员工姓名</label> <input type="text" class="form-control " id="new_ename" placeholder="请输入员工姓名"> </div> <div class="col-sm-6"> <label for="new_job">工作岗位</label> <select class="form-control" id="new_job"> <option value="">请选择工作岗位</option> <option>ANALYST</option> <option>CEO</option> <option>CLERK</option> <option>MANAGER</option> <option>PRESIDENT</option> <option>SALESMAN</option> </select> </div> </div> <br /> <br /> <div class="form-group" style="padding: 10px 5px 15px 20px;"> <div class="col-sm-6"> <label for="new_deptno">部门编号</label> <select class="form-control" id="new_deptno"> <option value="">请选择工作部门</option> <option value="10">10</option> <option value="20">20</option> <option value="30">30</option> </select> </div> <div class="col-sm-6"> <label for="new_mgr">直接领导</label> <input type="text" class="form-control " id="new_mgr" placeholder="请输入领导编号"> </div> </div> <br /> <br /> <div class="form-group" style="padding: 10px 5px 15px 20px;"> <div class="col-sm-6"> <label for="new_sal">薪水</label> <div class="input-group"> <span class="input-group-addon">$</span> <input type="text" class="form-control" id="new_sal" placeholder="请输入薪水"> </div> </div> <div class="col-sm-6"> <label for="new_comm">奖金</label> <div class="input-group"> <span class="input-group-addon">$</span> <input type="text" class="form-control" id="new_comm" placeholder="请输入奖金"> </div> </div> </div> <br /> <br /> <div class="form-group" style="padding: 10px 5px 15px 20px;"> <div class="col-sm-6"> <label for="new_hiredate" class="control-label">入职日期</label> <div class="input-group date form_date" data-date="" data-date-format="yyyy-mm-dd"> <input id="new_hiredate" class="form-control" size="16" type="text" value="" readonly /> <span class="input-group-addon"> <span class="glyphicon glyphicon-remove"></span> </span> <span class="input-group-addon"> <span class="glyphicon glyphicon-calendar"> </span> </span> </div> </div> </div> <input type="reset" name="reset" style="display: none;" /> <!-- 隐藏了一个重置按钮,方便清空表单里的内容 --> </form> <!-- form 表单 end --> </div> </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-default" onclick="clean()" data-dismiss="modal">关闭</button> <button type="button" id="btn_submit" class="btn btn-primary">提交更改</button> </div> </div> </div> </div> <!-- 编辑模态框 end --> <!--对话模态框 --> <div class="modal fade" id="alertModal" tabindex="-1" role="dialog" aria-labelledby="alertModalLabel" aria-hidden="true"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <h4 class="modal-title" id="alertModalLabel">注意:</h4> </div> <div class="modal-body"> <div id="alertModalContent"></div> </div> <div class="modal-footer"> <button type="button" class="btn btn-default" data-dismiss="modal">关闭</button> <button type="button" class="btn btn-primary" data-dismiss="modal">确定</button> </div> </div> <!-- /.modal-content --> </div> <!-- /.modal --> </div> <script type="text/javascript" src="static/common/jquery/jquery.min.js"></script> <!-- 引入jquery.js 必须最先引入Jquery.js --> <script type="text/javascript" src="static/common/bootstrap/js/bootstrap.min.js"></script> <!-- 引入bootStrap.js --> <script type="text/javascript" src="static/common/bootstrap-table/js/bootstrap-table.min.js"></script> <!-- 引入bootStrap-table.js --> <script type="text/javascript" src="static/common/bootstrap-table/js/bootstrap-table-zh-CN.min.js"></script> <script type="text/javascript" src="static/common/bootstrap-datetimepicker/js/bootstrap-datetimepicker.min.js"></script> <!-- 引入bootStrap-datetimepicker.js --> <script type="text/javascript" src="static/common/bootstrap-datetimepicker/js/bootstrap-datetimepicker.zh-CN.js"></script> <script type="text/javascript" src="static/emp/empHome.js"></script> <!-- 引入emphome.js --> <script type="text/javascript"> $(function() { /* 加载完成就开始执行 */ //1.初始化Table var oTable = new TableInit(); oTable.Init(); //2.初始化Button的点击事件 var oButtonInit = new ButtonInit(); oButtonInit.Init(); }); </script> </body> </html>
接着是js
//1.初始化Table var TableInit = function() { var oTableInit = new Object(); //初始化Table oTableInit.Init = function() { $('#tb_emp') .bootstrapTable( { url : 'emp/getEmps', //请求后台的URL(*) contentType : 'application/json;charset=utf-8', method : 'get', //请求方式(*) toolbar : '#toolbar', //工具按钮用哪个容器 striped : true, //是否显示行间隔色 cache : false, //是否使用缓存,默认为true,所以一般情况下需要设置一下这个属性(*) pagination : true, //是否显示分页(*) sortable : false, //是否启用排序 sortOrder : "asc", //排序方式 sidePagination : "server", //分页方式:client客户端分页,server服务端分页(*) // 如果是服务端分页,返回的结果必须包含total、rows两个参数。漏写或错写都会导致表格无法显示数据。相反,如果是客户端分页,这里要返回一个集合对象到前端。 pageNumber : 1, //初始化加载第一页,默认第一页 pageSize : 10, //每页的记录行数(*) pageList : [ 10, 25, 50, 100 ], //可供选择的每页的行数(*) queryParams : oTableInit.queryParams,//传递参数(*) search : false, //是否显示表格搜索, strictSearch : false, showColumns : true, //是否显示所有的列 showRefresh : true, //是否显示刷新按钮 minimumCountColumns : 2, //最少允许的列数 clickToSelect : true, //是否启用点击选中行 height : 500, //行高,如果没有设置height属性,表格自动根据记录条数觉得表格高度 uniqueId : "empno", //每一行的唯一标识,一般为主键列 showToggle : true, //是否显示详细视图和列表视图的切换按钮 cardView : false, //是否显示详细视图 detailView : false, //是否显示父子表 columns : [ { checkbox : true }, { field : 'empno', title : '员工编号' }, { field : 'ename', title : '员工姓名' }, { field : 'job', title : '工作岗位' }, { field : 'mgr', title : '直接领导' }, { field : 'hiredate', title : '入职日期', formatter : function(value, index, row) { if (value != null) { return formatDateFromNumber(value); } } }, { field : 'sal', title : '薪水' }, { field : 'comm', title : '奖金' }, { field : 'deptno', title : '部门编号' } ] }); }; //得到查询的参数 oTableInit.queryParams = function(params) { var temp = { //这里的键的名字和控制器的变量名必须一直,这边改动,控制器也需要改成一样的 limit : params.limit, //页面大小 offset : params.offset, //偏移量; 就是当前页是从第几个开始的 empno : $("#query_empno").val(), ename : $("#query_ename").val(), job : $("#query_job").val(), deptno : $("#query_deptno").val(), mgr : $("#query_mgr").val() }; return temp; }; return oTableInit; }; // 初始化按钮 var ButtonInit = function() { var oInit = new Object(); var newEmpData = {}; oInit.Init = function() { /* 新增按钮添加click事件 */ $("#btn_add").click(function() { $("#myModalLabel").text("新增"); newEmpData.empno = ""; $('#myModal').modal() }); /* 编辑按钮 添加click 事件 */ $("#btn_edit").click( function() { var arrselections = $("#tb_emp").bootstrapTable( 'getSelections'); if (arrselections.length > 1) { alertModal('注意:','只能删除一条数据!'); return; } if (arrselections.length <= 0) { alertModal('注意:','请选择有效数据!'); return; } $("#myModalLabel").text("编辑"); var s = arrselections[0].hiredate; var d = formatDateFromNumber(s); $("#new_job").val(arrselections[0].job); $("#new_ename").val(arrselections[0].ename); $("#new_deptno").val(arrselections[0].deptno); $("#new_sal").val(arrselections[0].sal); $("#new_mgr").val(arrselections[0].mgr); $("#new_comm").val(arrselections[0].comm); $("#new_hiredate").val(d); newEmpData.empno = arrselections[0].empno; $('#myModal').modal(); }); /* 提交按钮添加click 事件 */ $("#btn_submit").click(function() { newEmpData.ename = $("#new_ename").val(); newEmpData.job = $("#new_job").val(); newEmpData.deptno = $("#new_deptno").val(); newEmpData.mgr = $("#new_mgr").val(); newEmpData.sal = $("#new_sal").val(); newEmpData.comm = $("#new_comm").val(); newEmpData.hiredate = $("#new_hiredate").val(); $('#myModal').modal('hide'); clean(); if( ( newEmpData.ename != null && newEmpData.ename != "" ) && ( newEmpData.deptno != null && newEmpData.deptno != "" ) ){ $.ajax({ type : "post", url : "emp/updateEmp", data : newEmpData, success : function(data) { var z = eval('' + data); switch (z) { case "updateOk": alertModal('消息:','更新数据成功!'); break; case "updateFail": alertModal('注意:','更新数据失败!'); break; case "addOk": alertModal('消息:','添加数据成功!'); break; case "addFail": alertModal('注意:','添加数据失败!'); break; default: alert(data); break; } $("#tb_emp").bootstrapTable('refresh'); }, error : function() { alertModal('注意:','服务器后台出错了!'); } }); }else{ alertModal('注意:','员工的姓名不能为空!,员工的部门不能为空!'); } }); /* 删除按钮 添加 click 事件 */ $("#btn_delete").click( function() { var arrselections = $("#tb_emp").bootstrapTable( 'getSelections'); if (arrselections.length > 1) { alertModal('注意:','只能删除一条数据!'); return; } if (arrselections.length <= 0) { alertModal('注意:','请选择有效数据!'); return; } newEmpData.empno = arrselections[0].empno; var b = confirm("确认要删除么?"); if(b){ $.ajax({ type : "post", url : "emp/deleteEmp", data : newEmpData, success : function(data, status) { if (status == "success") { $("#tb_emp").bootstrapTable('refresh'); var x = eval('' + data); if ('deleteOk' == x) { alertModal('消息:','删除数据成功!'); } else { alertModal('注意:','删除数据失败!'); } } }, error : function() { alertModal('注意:','服务器后台出错了!'); }, }); } }); /* 查询按钮添加 click 事件 */ $("#btn_query").click(function() { $("#tb_emp").bootstrapTable('refresh'); }); }; return oInit; }; /* 设置 form_date */ $('.form_date').datetimepicker({ format: "yyyy-mm-dd", todayBtn : 'linked', todayHighlight : true, startView : 2, minView : 2 }); function clean() { $("input[type=reset]").trigger("click"); } /* 把数字转化为日期 */ function formatDateFromNumber(value){ var d = new Date(); d.setTime(value); var y = (d.getMonth() + 1) < 10 ? '0' + (d.getMonth() + 1) : (d.getMonth() + 1); var t = d.getDate() < 10 ? '0' + d.getDate() : d.getDate(); return d.getFullYear() + "-" + y + "-" + t; } /* alert弹出框 */ function alertModal(title,content){ if('消息:' == title){ $('#alertModalLabel').html('<button type="button" class="btn btn-success" disabled="disabled" >消息</button>'); $('#alertModalContent').html('<div class="alert alert-success">'+content+'</div>'); }else if('注意:' == title ){ $('#alertModalLabel').html('<button type="button" class="btn btn-danger" disabled="disabled" >注意</button>'); $('#alertModalContent').html('<div class="alert alert-danger">'+content+'</div>'); } $('#alertModal').modal(); setTimeout("$('#alertModal').modal('hide')",1000); /* 1 秒 后 模态框 自动 关闭 */ }
再接着是 controller
package com.etoak.mssm.emp.controller; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import com.etoak.mssm.emp.entity.Emp; import com.etoak.mssm.emp.service.EmpService; @Controller @RequestMapping("/emp") public class EmpConteoller { @Autowired private EmpService empService ; // 跳转页面 @RequestMapping("/empHome") public String empHome(){ return "emp/empHome"; } // 返回前台 //查询所有符合条件的Emp @RequestMapping("/getEmps") @ResponseBody public Map<String,Object> getEmps(int limit,int offset,String empno , String ename ,String job,String deptno ,String mgr){ Emp emp = new Emp(); emp.setStartSize(offset); emp.setEndSize(offset+limit); if("" != empno ){emp.setEmpno(Integer.parseInt(empno));} emp.setEname(ename); emp.setJob(job); if("" != deptno ){emp.setDeptno(Integer.parseInt(deptno));} if("" != mgr ){emp.setMgr(Integer.parseInt(mgr));} List<Emp> data = empService.getEmps(emp); int total = empService.getCount(emp); Map<String, Object> map = new HashMap<String, Object>();// 定义map map.put("total", total);// total键 存放总记录数,必须的 map.put("rows", data);// rows键 存放每页记录 list return map; } //新增或更新员工信息 @RequestMapping("/updateEmp") @ResponseBody public String updateEmp(String empno , String ename ,String job,String deptno ,String mgr,String sal,String comm , String hiredate){ Emp emp = new Emp(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); if(null != empno && "" != empno ){emp.setEmpno(Integer.parseInt(empno));} if(null != ename && "" != ename ) emp.setEname(ename); if(null != job && "" != job ) emp.setJob(job); if(null != deptno && "" != deptno ){emp.setDeptno(Integer.parseInt(deptno));} if(null != mgr && "" != mgr ){emp.setMgr(Integer.parseInt(mgr));} if(null != sal && "" != sal ) emp.setSal(Integer.parseInt(sal)); if(null != hiredate && "" != hiredate ){ try { emp.setHiredate(sdf.parse(hiredate)); } catch (ParseException e) { e.printStackTrace(); } } if(emp.getEmpno() != 0 ){ int r = empService.updateEmp(emp);//更新员工信息 if( r == 1 ){ return "updateOk"; }else{ return "updateFail"; } }else{ int r = empService.addEmp(emp); // 添加一个新员工信息 if( r == 1){ return "addOk"; }else{ return "addFail"; } } } //新增或更新员工信息 @RequestMapping("/deleteEmp") @ResponseBody public String deleteEmp(String empno){ Emp emp = new Emp(); if(null != empno && "" != empno ){emp.setEmpno(Integer.parseInt(empno));} int r = empService.deleteEmp(emp); // 添加一个新员工信息 if( r == 1){ return "deleteOk"; }else{ return "deleteFail"; } } }
至此 整个项目 算是 完成了 ;
运行如下:
下面给出 整个项目的源代码:
链接: https://pan.baidu.com/s/1kV1bfoF 密码: kv3v