jQuery插件简单学习实例教程

本文实例讲述了jQuery插件及其用法。分享给大家供大家参考，具体如下：

（1）异步分页插件flexgrid

1）前台js

<%@ page language="Java" contentType="text/html; charset=utf-8"
  pageEncoding="utf-8"%>







 





  

2）后台action

最后只需返回一个 名字为 rows的json即可

（2）放大镜，magnify

<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>

（3）autoComplete

<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>












  

(4)异步上传

<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>










  

    
  

（5）日历

<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>

后台的action如下：

package com.jquery.plugin.action;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.ServletActionContext;
import org.apache.struts2.json.annotations.JSON;
import com.jquery.plugin.dao.DataDao;
import com.jquery.plugin.pojo.Catalog;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionSupport;
public class JQueryAction extends ActionSupport{
  /**
   *
   */
  private static final long serialVersionUID = 1L;
  private String q ;
  private Integer rp;
  private Integer page;
  private Integer total;
  private List serarchResult = new ArrayList();
  private List rows = new ArrayList();
  private String sortname;
  private File upload;
  private String uploadFileName;
  public String getQ() {
    return q;
  }
  public void setQ(String q) {
    this.q = q;
  }
  public Integer getRp() {
    return rp;
  }
  public void setRp(Integer rp) {
    this.rp = rp;
  }
  public Integer getPage() {
    return page;
  }
  public void setPage(Integer page) {
    this.page = page;
  }
   @JSON(name="total")
  public Integer getTotal() {
    return total;
  }
  public String redirect(){
    System.out.println("go..");
    return Action.SUCCESS;
  }
  //{age:1}[search:{age:1}]
  @JSON(name="serarchResult")
  public List getSerarchResult() {
    return serarchResult;
  }
  public List getRows() {
    return rows;
  }
  public void setRows(List rows) {
    this.rows = rows;
  }
  public String getSortname() {
    return sortname;
  }
  public void setSortname(String sortname) {
    this.sortname = sortname;
  }
  public File getUpload() {
    return upload;
  }
  public void setUpload(File upload) {
    this.upload = upload;
  }
  public String getUploadFileName() {
    return uploadFileName;
  }
  public void setUploadFileName(String uploadFileName) {
    this.uploadFileName = uploadFileName;
  }
  public String autoCompleteJQuery(){
    System.out.println("q:"+q);
    List result = DataDao.getList();
    if(!"".equals(q)){
    for (Catalog catalog : result) {
      if(catalog.getCatalogName().toLowerCase().contains(q.toLowerCase())){
        serarchResult.add(catalog);
      }
    }
    }
    System.out.println(serarchResult.size());
    return Action.SUCCESS;
  }
  public String flexigrid(){
    try {
      List result = DataDao.getList();
      Integer startIndex = (page-1)*rp;
      Integer endIndex = startIndex+rp;
      total = result.size();
      while(endIndex>result.size()){
        endIndex--;
      }
      System.out.println("page:"+page+":total:"+total);
      System.out.println("sortname:"+sortname);
      for(int i = startIndex ;i < (endIndex);i++){
        rows.add(result.get(i));
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
    return Action.SUCCESS;
  }
  public String ajaxFileUpload(){
    System.out.println("begin...");
    BufferedOutputStream out = null ;
    BufferedInputStream in = null ;
    String uploadPath = null ;
    String contextPath = null;
    try {
      //fileName = URLEncoder.encode(fileName, "GB2312");
      System.out.println("fileName:"+uploadFileName);
      byte [] buffer = new byte[1024];
      HttpServletRequest request = ServletActionContext.getRequest();
      contextPath = request.getSession().getServletContext().getRealPath("/");
       uploadPath = contextPath+"/upload/"+uploadFileName;
       System.out.println(uploadPath);
      out = new BufferedOutputStream(new FileOutputStream(uploadPath));
      int len = 0 ;
      in = new BufferedInputStream(new FileInputStream(upload));
      while((len = in.read(buffer, 0, buffer.length))!=-1){
        out.write(buffer, 0, len);
        out.flush();
      }
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }finally{
      try {
        if(out != null){
          out.close();
        }
        if(in != null){
          in.close();
        }
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
    System.out.println("上传成功");
    return null;
  }
}

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希望本文所述对大家jQuery程序设计有所帮助。