DepartmentDao.java

package com.service;

import com.entities.Department;

import java.util.List;


public class DepartmentDao extends BaseDao {


    public List getAll() {

        String hql = "from Department";

        return getSession().createQuery(hql).list();
    }

}

DepartmentService.java

package com.service;

import com.entities.Department;

import java.util.List;


public class DepartmentService {

    private DepartmentDao departmentDao;

    public void setDepartmentDao(DepartmentDao departmentDao) {
        this.departmentDao = departmentDao;
    }

    public List getAll() {

        return departmentDao.getAll();
    }
}

action.java

package com.actions;

import com.opensymphony.xwork2.ActionSupport;
import com.service.DepartmentService;
import com.service.EmployeeService;
import org.apache.struts2.interceptor.RequestAware;

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.util.Map;


public class EmployeeAction extends ActionSupport implements RequestAware {

    private EmployeeService employeeService;
    private DepartmentService departmentService;
    private InputStream inputStream;
    private Map request;
    private Integer id;

    public InputStream getInputStream() {
        return inputStream;
    }

    public void setDepartmentService(DepartmentService departmentService) {
        this.departmentService = departmentService;
    }

    public void setEmployeeService(EmployeeService employeeService) {
        this.employeeService = employeeService;
    }


    public void setId(Integer id) {
        this.id = id;
    }

    public String list() {

        request.put("employee", employeeService.getAll());

        return "list";
    }


//这里赋值给request了，怎么获取不到实际的内容呢？
    public String input() {

        request.put("departments", departmentService.getAll());

        return "input";
    }


    public String delete() {

        try {
            employeeService.delete(id);
            inputStream = new ByteArrayInputStream("1".getBytes("UTF-8"));
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            try {
                inputStream = new ByteArrayInputStream("0".getBytes("UTF-8"));
            } catch (UnsupportedEncodingException e1) {
                e1.printStackTrace();
            }
        }

        return "delete";
    }

    @Override
    public void setRequest(Map map) {


        this.request = map;
    }


}

jsp：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags" %>



    



Employee Input info





    
    
    
    

    <%--这里为什么获取的是地址呢？--%>
    
    
    




<%--这里对比的，这里能够获取value="#request.departments--%>


        


    

        
ID
        
DEPARTMENT

    
    

            
${id}
            
${departmentname}
        


    

显示：为什么显示的是Deapartment的对象地址呢？这说明listKey和listValue不起作用啊..怎么回事？