mybatis分页（struts2+spring+mybatis）

package com.diary.action; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import org.apache.struts2.ServletActionContext; import com.diary.entity.Diary; import com.diary.service.DiaryService; import com.diary.util.PageHelp; import com.diary.util.Pager; import com.opensymphony.xwork2.ActionSupport; import com.opensymphony.xwork2.ModelDriven; public class DiaryAction extends ActionSupport implements ModelDriven<Diary> { private static final long serialVersionUID = 1L; private Diary diary; private DiaryService diaryService; private List<Diary> diaries; private HttpSession session; private HttpServletRequest request; private Integer totalRows = 0;//总行数 /** * 新增日记 * @return */ public String addDiary(){ session = ServletActionContext.getRequest().getSession(); Date dt=new Date();//当前系统时间 DateFormat df = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");//设置显示格式 String nowTime = df.format(dt);//用DateFormat的format()方法在dt中获取并以yyyy/MM/dd HH:mm:ss格式显示 diary.setCreateTime(nowTime);//设置当前时间 int res = diaryService.addDiary(diary); if(res>=1){ session.setAttribute("msg", "新增成功"); }else{ session.setAttribute("msg", "新增失败"); } return SUCCESS; } /** * 分页查询日记 * @return */ public String findAll(){ request = ServletActionContext.getRequest(); session = request.getSession(); totalRows = diaryService.findAll().size(); //通过来获得输入到页面的 Pager对象 Pager pager = PageHelp.getPager(request, totalRows); diaries = diaryService.findAllPage(pager.getPagesize(), pager.getStartRows()); if(diaries.size()>0){ session.setAttribute("diaries", diaries); session.setAttribute("pager", pager);//返回分页对象 } return SUCCESS; } /** * 查询单个日记 * @return */ public String findOne(){ session = ServletActionContext.getRequest().getSession(); Diary d = new Diary(); d = diaryService.findOne(diary); session.setAttribute("d", d); return SUCCESS; } /** * 查询单个日记 * @return */ public String updateFindOne(){ session = ServletActionContext.getRequest().getSession(); Diary d = new Diary(); d = diaryService.findOne(diary); session.setAttribute("dd", d); return SUCCESS; } /** * 修改日记 * @return */ public String update(){ session = ServletActionContext.getRequest().getSession(); /* Date dt=new Date();//当前系统时间 DateFormat df = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");//设置显示格式 String nowTime = df.format(dt);//用DateFormat的format()方法在dt中获取并以yyyy/MM/dd HH:mm:ss格式显示 diary.setCreateTime(nowTime);//设置当前时间 */ int res = diaryService.update(diary); if(res>=1){ session.setAttribute("msg", "修改成功"); }else{ session.setAttribute("msg", "修改失败"); } return SUCCESS; } /** * 删除日记 * @return */ public String del(){ session = ServletActionContext.getRequest().getSession(); int res = diaryService.del(diary); int all = diaryService.findAll().size(); if(all>1){ if(res>=1){ session.setAttribute("msg", "删除成功"); }else{ session.setAttribute("msg", "删除失败"); } }else{ session.setAttribute("msg", "删除失败"); } return SUCCESS; } public List<Diary> getDiaries() { return diaries; } public void setDiaries(List<Diary> diaries) { this.diaries = diaries; } public Diary getDiary() { return diary; } public void setDiary(Diary diary) { this.diary = diary; } public DiaryService getDiaryService() { return diaryService; } public void setDiaryService(DiaryService diaryService) { this.diaryService = diaryService; } public Integer getTotalRows() { return totalRows; } public void setTotalRows(Integer totalRows) { this.totalRows = totalRows; } @Override public Diary getModel() { if(diary==null){ diary = new Diary(); } return diary; } }