利用SpringMvc和MyBatis实现员工列表显示页面

利用SpringMvc和MyBatis实现员工列表显示页面

 

首先使用MapperScannerConfigurer将带有@MyBatisRespository注解的Dao接口扫描生成MapperFacotryBean实例

 

然后通过MapperFactoryBean生成Dao实例给SpringMvc的Controller对象注入。

 

最后Controller将DAO查询返回的记录传递到Jsp显示

 

步骤

1：建工程，导包

 

 

2：新建Emp实体类和EmpMapper.xml映射文件

package com.eduask.mvc.entity;   import java.util.Date;   public class Emp { private Integer empno; private String ename; private String job; private Integer mgr; private Date hiredate; private Double sal; private Double comm; private Integer deptno; public Integer getEmpno() { return empno; } public void setEmpno(Integer empno) { this.empno = empno; } public String getEname() { return ename; } public void setEname(String ename) { this.ename = ename; } public String getJob() { return job; } public void setJob(String job) { this.job = job; } public Integer getMgr() { return mgr; } public void setMgr(Integer mgr) { this.mgr = mgr; } public Date getHiredate() { return hiredate; } public void setHiredate(Date hiredate) { this.hiredate = hiredate; } public Double getSal() { return sal; } public void setSal(Double sal) { this.sal = sal; } public Double getComm() { return comm; } public void setComm(Double comm) { this.comm = comm; } public Integer getDeptno() { return deptno; } public void setDeptno(Integer deptno) { this.deptno = deptno; } }

 

3：注解接口MyBatisRepository

 

package com.eduask.mvc.annotation;   import org.springframework.stereotype.Repository;   @Repository public @interface MyBatisRepository { String value() default ""; }

 

4：新建Dao接口EmpDao

 

package com.eduask.mvc.dao;   import java.util.List;   import com.eduask.mvc.annotation.MyBatisRepository; import com.eduask.mvc.entity.Emp;   @MyBatisRepository public interface EmpDao { public List<Emp> findAll(); }

5：新建spring配置文件

 

 

<?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:myns="http://www.mycompany.com/schema/myns" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.mycompany.com/schema/myns http://www.mycompany.com/schema/myns/myns-3.2.xsd http://www.springframework.org/schema/context         http://www.springframework.org/schema/context/spring-context-3.2.xsd         http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd         http://www.springframework.org/schema/jee      http://www.springframework.org/schema/jee/spring-jee-3.2.xsd         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd         http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd         http://www.springframework.org/schema/mvc         http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">   <context:component-scan base-package="com.eduask" /> <mvc:annotation-driven />   <bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="oracle.jdbc.OracleDriver"></property> <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl"></property> <property name="username" value="scott"></property> <property name="password" value="zgoracle"></property> </bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="myDataSource"/> <property name="mapperLocations" value="classpath:com/eduask/mvc/entity/*.xml"/> </bean>   <!-- 按指定包和注解标记扫描 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionFactory" ref="sqlSessionFactory"/> <property name="basePackage" value="com.eduask"/> <property name="annotationClass" value="com.eduask.mvc.annotation.MyBatisRepository"/> </bean>   <!-- 配置视图解析器 --> <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp"></property> </bean>     </beans>

6：新建测试类

package com.eduask.mvc.test;   import java.io.IOException; import java.util.List;   import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext;   import com.eduask.mvc.dao.EmpDao; import com.eduask.mvc.entity.Emp;   public class TestEmpDao { @Test public void testFindAll() throws IOException{ String conf="applicationContext.xml"; ApplicationContext ac=new ClassPathXmlApplicationContext(conf); EmpDao mapper=ac.getBean("empDao",EmpDao.class); List<Emp> list=mapper.findAll(); for(Emp emp:list){ System.out.println(emp.getEname()); } }   }

 

7：运行测试类

 

 

8：新建EmpListController

 

package com.eduask.mvc.web;   import java.util.List;   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 com.eduask.mvc.dao.EmpDao; import com.eduask.mvc.entity.Emp;   @Controller @RequestMapping("/emp") public class EmpListController { private EmpDao dao; @Autowired public void setDao(EmpDao dao) { this.dao = dao; } @RequestMapping("/list.form") public String execute(Model model){ List<Emp> list=dao.findAll(); model.addAttribute("emps",list); return "emp_list"; }   }

 

8:新建jsp

 

 

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c"%>     <!DOCTYPE HTMLf> <html> <head> <title>My JSP 'emp_list.jsp' starting page</title> <meta charset="utf-8"> </head>   <body> <table border="1"> <tr> <td>编号</td> <td>姓名</td> <td>工资</td> <td>入职时间</td> </tr> <c:forEach items="${emps}" var="emp"> <tr> <td>${emp.empno}</td> <td>${emp.ename}</td> <td>${emp.sal}</td> <td>${emp.hiredate}</td> </tr> </c:forEach> </table> </body> </html>

 

 

测试

http://localhost:8080/SMMvcTest/emp/list.form