easyUI + servlet 展示datagrid数据列表

1：在jsp页面添加所用easyUI的js和css

2.前台代码示例：

<table id="dgObj" style="width: 100%;height:90%;" align="left"  url="showAdminWwqyxycServlet" >
 </table>

<script type="text/javascript">
  $(function(){
     $("#dgObj").datagrid({
      //loader:myLoader,
            pagination:true,
   rownumbers:true,
   singleSelect:false,  
   pageSize:50,
   remoteSort:true,
   fitColumns:false,
   selectOnCheck:false,
   checkOnSelect:false,
   striped:true,
   pageList:[50],
         columns:[[   
            {field:'cd',checkbox:true}, 
            {field:'OPINION_ID',title:'主键',width:100,align:'center',hidden:true}, 
            /* {field:'THUMB_UP_NUM',title:'点赞数',width:100,halign:'center',align:'left'}, */
            /* {field:'OPINION_TYPE',title:'意见归属',width:250,halign:'center',align:'left',formatter:approveResult}, */
            {field:'TITLE',title:'标题',width:550,halign:'center',align:'left',formatter:go},
            {field:'SUGGEST_TIME',title:'提问时间',width:250,halign:'center',align:'left'},
            {field:'IS_AUDIT',title:'是否审核',width:100,halign:'center',align:'left',formatter:Type},
            {field:'IS_ANSWER',title:'是否回复',width:100,halign:'center',align:'left',formatter:isType},
       ]],
      toolbar: [{ 
                    text: '我要提建议', 
                    iconCls: 'icon-add', 
                    handler: function() {
                      var type="2";//我为企业献一策
                     url='addWwqyxyc.jsp?type='+type+'&isadmin=1'; 
                      var height = window.screen.availHeight; 
      var width = window.screen.availWidth;
      window.open (url,'newwindow','height=1000,width=800,top=100,left=400,toolbar=no,menubar=no,scrollbars=no, resizable=no,location=no, status=no');
                      window.close(url);
                     } 
                }]    
   });
 });
  </script>

3.配置好对应的servlet

4.后台代码示例：（servlet部分）

package com.advice.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sf.json.JSON;
import net.sf.json.JSONObject;
import net.sf.json.JSONSerializer;

import com.advice.dao.OpinionDao;
import com.advice.entity.OpinionPo;
import com.advice.util.PageBean;
import com.advice.util.ResponseUtil;

public class ShowAdminWwqyxycServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        this.doPost(request, response);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        int total = ;//记录总数
        String page=request.getParameter("page")==null?"":request.getParameter("page");
        String rows=request.getParameter("rows")==null?"":request.getParameter("rows");
        //处理筛选条件
        String isAudit = request.getParameter("isAudit")==null?"":request.getParameter("isAudit").toString();//
        String isAnswer = request.getParameter("isAnswer")==null?"":request.getParameter("isAnswer").toString();//
        OpinionPo OpinionXX = new OpinionPo();
        OpinionXX.setIsAudit(isAudit);
        OpinionXX.setIsAnswer(isAnswer);
        PageBean pageBean = new PageBean(Integer.parseInt(page),Integer.parseInt(rows));
        try{
            JSONObject result =  new JSONObject();
            OpinionDao sd = new OpinionDao();
            JSON json = JSONSerializer.toJSON(sd.selectOpinionListALL(pageBean,,OpinionXX));//数据查询
            total = sd.selectOpinionCountAll(,OpinionXX);
            result.put("rows", json);
            result.put("total", total);
            ResponseUtil.write(response, result);
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

5.后台取值部分示例：

    public String selectOpinionListALL(PageBean pageBean, int type, OpinionPo opinionXX){
        //处理筛选条件
        String isAudit=opinionXX.getIsAudit();//是否审核
        String isAnswer=opinionXX.getIsAnswer();//是否回复
        StringBuffer filter = new StringBuffer();//查询确址任务管理列表当前页语句
        if(isAudit != null && !"".equals(isAudit) && !isAudit.equals("--不限--")){
            filter.append(" AND IS_AUDIT = '").append(isAudit).append("' ");
        }
        if(isAnswer != null && !"".equals(isAnswer) && !isAnswer.equals("--不限--")){
            filter.append(" AND IS_ANSWER = '").append(isAnswer).append("' ");
        }
        JsonArray jsonArray = new JsonArray();
        StringBuffer sql = new StringBuffer();
        sql.append("SELECT * FROM (");
        sql.append("SELECT ROW_NUMBER() OVER (ORDER BY suggest_time asc) as RNO, op.* FROM ADVICE_OPINION op");
        sql.append(" WHERE 1=1");
        sql.append(filter.toString());//查询条件一定要拼接在分页查询语句中
        sql.append(" AND opinion_type = '").append(type).append("') WHERE RNO BETWEEN ").append(pageBean.getStart());
        sql.append(" AND ").append(pageBean.getEnd()).append(" ORDER BY suggest_time asc");
        DBManager dbManager = new DBManager();
        Connection conn = null;
        ResultSet rs = null;
        conn = dbManager.getConnection();
        try {
            rs = dbManager.executeQuery(sql.toString());
            if(rs != null){
                while(rs.next()){
                    JsonObject obj = new JsonObject();
                    obj.addProperty("OPINION_ID", rs.getString("OPINION_ID"));//
                    obj.addProperty("OPINION_TYPE", rs.getString("OPINION_TYPE"));//
                    obj.addProperty("TITLE", rs.getString("TITLE"));//标题
                    obj.addProperty("NAME", rs.getString("NAME"));//姓名
                    obj.addProperty("DEPARTMENT", rs.getString("DEPARTMENT"));//部门
                    obj.addProperty("PHONE", rs.getString("PHONE"));//电话
                    obj.addProperty("EMAIL", rs.getString("EMAIL"));//邮箱
                    obj.addProperty("FILE_NAME", rs.getString("FILE_NAME"));//
                    obj.addProperty("FILE_PATH", rs.getString("FILE_PATH"));//
                    obj.addProperty("SUGGEST_TYPE", rs.getString("SUGGEST_TYPE"));//
                    obj.addProperty("SUGGEST_CONTENTS", rs.getString("SUGGEST_CONTENTS"));//
                    obj.addProperty("SUGGEST_STEP", rs.getString("SUGGEST_STEP"));//
                    obj.addProperty("SUGGEST_IP", rs.getString("SUGGEST_IP"));//
                    obj.addProperty("SUGGEST_TIME", rs.getString("SUGGEST_TIME"));//
                    obj.addProperty("IS_AUDIT", rs.getString("IS_AUDIT"));//
                    obj.addProperty("AUDIT_USER_ID", rs.getString("AUDIT_USER_ID"));//
                    obj.addProperty("AUDIT_USER_IP", rs.getString("AUDIT_USER_IP"));//
                    obj.addProperty("AUDIT_TIME", rs.getString("AUDIT_TIME"));//
                    obj.addProperty("IS_ANSWER", rs.getString("IS_ANSWER"));//
                    obj.addProperty("ANSWER_USER_ID", rs.getString("ANSWER_USER_ID"));//
                    obj.addProperty("ANSWER_USER_IP", rs.getString("ANSWER_USER_IP"));//
                    obj.addProperty("ANSWER_TIME", rs.getString("ANSWER_TIME"));//
                    obj.addProperty("THUMB_UP_NUM", rs.getString("THUMB_UP_NUM"));//
                    jsonArray.add(obj);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            //关闭连接
            dbManager.closeResultSet();
            dbManager.closeStatement();
            dbManager.closeConnection(conn);
        }
        Gson gson = new Gson();
        return gson.toJson(jsonArray);
    }