studentaction.java

使用WEBWORK,SPRING,HIBERNATE编写的简单的添加

/**
 *文件功能： 
 */
package com.tech.action;

import java.net.URLEncoder;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.common.Config;
import com.common.action.BaseAction;
import com.common.hibernate.IdGenerator;
import com.common.util.PaginationSupport;
import com.common.dao.DaoHelper;
import com.tech.model.Student;
import com.tech.service.StudentService;

/**
 * @作者 徐建协
 * @日期 2009-02-05
 */
public class StudentAction extends BaseAction {
	private Log log = LogFactory.getLog(StudentAction.class);
	private Student student;
	private List list;
	private PaginationSupport page;
	private StudentService studentService;
	private DaoHelper daoHelper;
	public void setDaoHelper(DaoHelper daoHelper) {
		this.daoHelper = daoHelper;
	}
	public Student getStudent() {
		return student;
	}

	public void setStudent(Student student) {
		this.student = student;
	}



	public List getList() {
		return list;
	}

	public PaginationSupport getPage() {
		return page;
	}

	public void setStudentService(StudentService studentService) {
		this.studentService = studentService;
	}

	public String add() {
    this.setActionName(Config.ADD);
		try {
		  if(student==null){
		    student = new Student();
		  }			
//			page = new PaginationSupport(getMap());
//			page.setContextPath(this.getContextPath());
//			this.setUrlParams(page.getParams());					
			return INPUT;
		} catch (Exception ex) {
		  log.error("add "+ex.toString());
	      if(ex.getMessage()==null){
	        setErrMessage(ex.toString());
	      }else{
	        setErrMessage(ex.getMessage());
	      }
		}
		return LIST;
	}

	public String modify() {
	  this.setActionName(Config.MODIFY); 
		try {
			if (student == null || student.getId() == null) {
				setErrMessage("修改对象的ID为空！");
				return ERROR;
			}
			setStudent(studentService.getEntity(getStudent().getId()));
			page = new PaginationSupport(getMap());
			page.setContextPath(this.getContextPath());
			this.setUrlParams(page.getParams());			   	
			return INPUT;
		} catch (Exception ex) {
		  log.error("modify "+ex.toString());
      if(ex.getMessage()==null){
        setErrMessage(ex.toString());
      }else{
        setErrMessage(ex.getMessage());
      }
			return LIST;
		}
	}

	public String remove() {
		try {
			studentService.removeEntity(student);
			setActionMessage(Config.DELETE_SUCCESS_MESSAGE);
			page = new PaginationSupport(getMap());
			page.setContextPath(this.getContextPath());
			this.setUrlParams(page.getParams()+"&actionMessage="+URLEncoder.encode(Config.DELETE_SUCCESS_MESSAGE,"GBK"));			
			return LIST;
		} catch (Exception ex) {
		  log.error("remove "+ex.toString());
		  if(ex.getMessage()==null){
		    setErrMessage(ex.toString());
		  }else{
		    setErrMessage(ex.getMessage());
		  }
			
			return LIST;
		}
	}

	public String save() throws Exception {
		try {
			
			if (getStudent().getId() != null) {
				this.setAction(this.ACTION_UPDATE);
				this.setActionName(Config.MODIFY); 
				studentService.updateEntity(student);
				setActionMessage(Config.MODIFY_SUCCESS_MESSAGE);
				page = new PaginationSupport(getMap());
				page.setContextPath(this.getContextPath());
				this.setUrlParams(page.getParams()+"&actionMessage="+URLEncoder.encode(Config.MODIFY_SUCCESS_MESSAGE,"GBK"));				
				return LIST;
			} else {
				this.setAction(this.ACTION_ADD);
				this.setActionName(Config.ADD); 
				student.setId(new Long(IdGenerator.getId()));
				studentService.saveEntity(student);
				setActionMessage(Config.ADD_SUCCESS_MESSAGE);
				page = new PaginationSupport(getMap());
				page.setContextPath(this.getContextPath());
				this.setUrlParams(page.getParams()+"&actionMessage="+URLEncoder.encode(Config.ADD_SUCCESS_MESSAGE,"GBK"));
				return LIST;
			}
		} catch (Exception ex) {
		    log.error("save "+ex.toString());
        if(ex.getMessage()==null){
          setErrMessage(ex.toString());
        }else{
          setErrMessage(ex.getMessage());
        }
			  if(this.getAction().equals(this.ACTION_ADD)){//当前的操作异常时添加异常
				  student.setId(null);
			  }
			  return INPUT;
		}
	}

	public String detail() throws Exception {
		try {
			setStudent(studentService.getEntity(getStudent().getId()));
			try {
				getStudent().getId();
			} catch (Exception ex) {
				throw new Exception("此信息已经不存在，请刷新数据");
			}
			return INPUT;
		} catch (Exception ex) {
		   log.error("detail "+ex.toString());
         if(ex.getMessage()==null){
            setErrMessage(ex.toString());
         }else{
            setErrMessage(ex.getMessage());
         }
			return LIST;
		}
	}

	public String list() {
		try {
			page = new PaginationSupport(getMap());
			page.setUrl(this.getUrl());
			page.setContextPath(this.getContextPath());
			page.setParam("pageSize","15");
			this.setUrlParams(page.getParams());			
			String countSQL="select count(t.id) count from student t where 1=1";
			String countAlias="count";
			String sql="select {t.*} from student t where 1=1 order by t.id desc";
			String sqlAlias="t";
			page=daoHelper.findBySQL(page, countSQL, countAlias, sql, sqlAlias,null, Student.class, false);
			list=page.getItems();
			this.setRecordCount(page.getTotalCount());			
		} catch (Exception ex) {
		     log.error("list "+ ex.toString());
         if(ex.getMessage()==null){
           setErrMessage(ex.toString());
         }else{
           setErrMessage(ex.getMessage());
         }
		  }
		return this.SUCCESS;
	}



}