小项目：基于Struts框架的员工管理系统的java实现

1.导入struts包

c3p0-0.9.1.2.jar
commons-beanutils-1.8.3.jar
commons-dbutils-1.6.jar
commons-fileupload-1.2.2.jar
commons-io-2.0.1.jar
commons-lang3-3.1.jar
freemarker-2.3.19.jar
javassist-3.11.0.GA.jar
mysql-connector-java-5.1.12-bin.jar
ognl-3.0.5.jar
struts2-core-2.3.4.1.jar
xwork-core-2.3.4.1.jar

2.web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  
  <filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

</web-app>

3.stuts.xml配置

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
	"http://struts.apache.org/dtds/struts-2.3.dtd">

<!-- START SNIPPET: xworkSample -->
<struts>

	<!-- 更改主题 -->
	<constant name="struts.ui.theme" value="simple"></constant>
	<package name="emp" extends="struts-default">
		<global-results>
			<result name="error">/error/error.jsp</result>
		</global-results>
		
		<action name="emp_*" class="com.bxh.action.EmployeeAction" method="{1}">
			<!--一、 防表单重复提交，二、配置防表单重复提交拦截器 -->
			<interceptor-ref name="defaultStack"></interceptor-ref>
			<interceptor-ref name="token">
				<!-- 三、指定拦截器那些方法需要 -->
				<param name="includeMethods">save</param>
			</interceptor-ref>
			
			<result name="invalid.token" type="redirectAction">emp_list</result>
			
			<result name="list">/WEB-INF/list.jsp</result>
			<result name="update">/WEB-INF/update.jsp</result>
			<result name="addsuccess" type="redirectAction">emp_list</result>
		</action>
	
	</package>

</struts>

<!-- END SNIPPET: xworkSample -->

3./src/c3p0-config.xml

<c3p0-config>
  <default-config>
     <property name="driverClass">com.mysql.jdbc.Driver</property> 
     <property name="jdbcUrl">jdbc:mysql:///hib_demo</property> 
     <property name="user">root</property> 
     <property name="password">123456</property> 
     <property name="initialPoolSize">5</property> 
     <property name="maxPoolSize">10</property> 

  </default-config>


  <named-config name="oracleConfig">
    <property name="driverClass">com.mysql.jdbc.Driver</property> 
     <property name="jdbcUrl">jdbc:mysql:///hib_demo</property> 
     <property name="user">root</property> 
     <property name="password">root</property> 
     <property name="initialPoolSize">5</property> 
     <property name="maxPoolSize">10</property> 
   </named-config>

</c3p0-config>

5.原码目录结构：

import java.util.List;

import com.bxh.entity.Employee;

public interface IEmployeeDao  {

	//查询员工
	List<Employee> getAll();
//	根据主键查询
	Employee findById(int id);
//	添加员工
	void save(Employee emp);
//	修改员工
	void update(Employee emp);
}

import java.sql.SQLException;
import java.util.List;

import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;

import com.bxh.dao.IEmployeeDao;
import com.bxh.entity.Employee;
import com.bxh.utils.JdbcUtils;

public class EmployeeDao implements IEmployeeDao{

	public List<Employee> getAll() {
		// TODO Auto-generated method stub
		String sql="select * from employee ";
		try {
			return JdbcUtils.getQuerrRunner().query(sql, new BeanListHandler<Employee>(Employee.class));
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			throw new RuntimeException(e);
		}
	}

	public Employee findById(int id) {
		// TODO Auto-generated method stub
		String sql="select * from employee where id=?";
		try {
			return JdbcUtils.getQuerrRunner().query(sql, new BeanHandler<Employee>(Employee.class),id);
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			throw new RuntimeException(e);
		}	
	}

	public void save(Employee emp) {
		// TODO Auto-generated method stub
		String sql="insert into employee(empName,workDate) values(?,?)";
		try {
			 JdbcUtils.getQuerrRunner().update(sql, emp.getEmpName(),emp.getWorkDate());
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			throw new RuntimeException(e);
		}
	}

	public void update(Employee emp) {
		// TODO Auto-generated method stub
		String sql="update employee set empName=?,workDate=? where id=?";
		try {
			 JdbcUtils.getQuerrRunner().update(sql, emp.getEmpName(),emp.getWorkDate(),emp.getId());
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			throw new RuntimeException(e);
		}
	}

}

import java.util.List;

import com.bxh.entity.Employee;

public interface IEmployeeService  {

	//查询员工
	List<Employee> getAll();
//	根据主键查询
	Employee findById(int id);
//	添加员工
	void save(Employee emp);
//	修改员工
	void update(Employee emp);
}

import java.sql.SQLException;
import java.util.List;

import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;

import com.bxh.dao.IEmployeeDao;
import com.bxh.dao.impl.EmployeeDao;
import com.bxh.entity.Employee;
import com.bxh.service.IEmployeeService;
import com.bxh.utils.JdbcUtils;

public class EmployeeService implements IEmployeeService{

	private IEmployeeDao employeeDao=new EmployeeDao();
	public List<Employee> getAll() {

		try {
			return employeeDao.getAll();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			throw new RuntimeException(e);
		}
	}

	public Employee findById(int id) {
		try {
			return employeeDao.findById(id);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			throw new RuntimeException(e);
		}	
	}

	public void save(Employee emp) {
		// TODO Auto-generated method stub
		try {
			employeeDao.save(emp);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			throw new RuntimeException(e);
		}
	}

	public void update(Employee emp) {
		try {
			employeeDao.update(emp);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			throw new RuntimeException(e);
		}
	}

}

import java.util.List;

import com.bxh.entity.Employee;
import com.bxh.service.IEmployeeService;
import com.bxh.service.impl.EmployeeService;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.opensymphony.xwork2.util.ValueStack;

//员工管理Action
public class EmployeeAction extends ActionSupport implements ModelDriven<Employee>{

	/*封装数据*/
	private Employee employee=new Employee();
	public void setEmp(Employee employee) {
		this.employee = employee;
	}
	public Employee getEmp() {
		return employee;
	}
	
	/**调用service***/
	private IEmployeeService employeeService=new EmployeeService();
	
	public String save(){
		try {
			employeeService.save(employee);
			return list();
//			return "addsuccess";
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return ERROR;
		}
		
	}
	//显示列表页面
	public String list(){
		try {
			List<Employee> listEmp=employeeService.getAll();
			ActionContext.getContext().getContextMap().put("listEmp", listEmp);
			return "list";
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return ERROR;
		}
		
	}
	//实现驱动模型方法
	public Employee getModel() {
		// TODO Auto-generated method stub
		return employee;
	}
	//进入修改页面
	public String viewUpdate(){
		try {
			int id=employee.getId();
			Employee emp=employeeService.findById(id);
			//数据回显技术
			ValueStack vs=ActionContext.getContext().getValueStack();
			vs.pop();
			vs.push(emp);
			return "update";
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return ERROR;
		}
		
	}
	//修改成功后进入显示页面
	public String update(){
		try {
			employeeService.update(employee);
			return list();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return ERROR;
		}
		
	}
}
import java.util.Date;

public class Employee {

	private int id;
	private String empName;
	private Date workDate;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getEmpName() {
		return empName;
	}
	public void setEmpName(String empName) {
		this.empName = empName;
	}
	public Date getWorkDate() {
		return workDate;
	}
	public void setWorkDate(Date workDate) {
		this.workDate = workDate;
	}
	
	
}

import javax.sql.DataSource;

import org.apache.commons.dbutils.QueryRunner;

import com.mchange.v2.c3p0.ComboPooledDataSource;

/**
 * 封装常用的操作
 * @author bxh
 *
 */
public class JdbcUtils {

	// 初始化连接池
	private static DataSource dataSource;
	static {
		dataSource = new ComboPooledDataSource();
	}
	
	public static DataSource getDataSource() {
		return dataSource;
	}
	
	/**
	 * 创建DbUtils常用工具类对象
	 */
	public static QueryRunner getQuerrRunner() {
		return new QueryRunner(dataSource);
	}
	
}

小项目：基于Struts框架的员工管理系统的java实现

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