jqueryデータテーブルのバックグラウンドカプセル化データのサンプルcode_jquery

1. データ変換クラス

public class DataTableReturnObject { 
private int iTotalRecords; 
private int iTotalDisplayRecords; 
private String sEcho; 
private String[][] aaData; 

public DataTableReturnObject(int totalRecords, int totalDisplayRecords, String echo, String[][] d) { 
this.setiTotalRecords(totalRecords); 
this.setiTotalDisplayRecords(totalDisplayRecords); 
this.setsEcho(echo); 
this.setAaData(d); 
} 

public void setiTotalRecords(int iTotalRecords) { 
this.iTotalRecords = iTotalRecords; 
} 

public int getiTotalRecords() { 
return iTotalRecords; 
} 

public void setiTotalDisplayRecords(int iTotalDisplayRecords) { 
this.iTotalDisplayRecords = iTotalDisplayRecords; 
} 

public int getiTotalDisplayRecords() { 
return iTotalDisplayRecords; 
} 

public void setsEcho(String sEcho) { 
this.sEcho = sEcho; 
} 

public String getsEcho() { 
return sEcho; 
} 

public void setAaData(String[][] aaData) { 
this.aaData = aaData; 
} 

public String[][] getAaData() { 
return aaData; 
} 
}

2 つのヘルプ クラス

public class BaseController { 
protected JSONResponse successed(Object obj) { 
JSONResponse ret = new JSONResponse(); 
ret.setSuccessed(true); 
ret.setReturnObject(obj); 
return ret; 
} 
}

3. 実装クラス

public JSONResponse searchList(HttpServletRequest request , HttpServletResponse response ,String sEcho) throws Exception { 
//convertToMap定义于父类，将参数数组中的所有元素加入一个HashMap 
Map<Object, Object> objQueryMap = new HashMap<Object, Object>(); 
String jsondata = request.getParameter("aoData"); 
JSONArray jsonarray = JSONArray.fromObject(jsondata); 
String strDisplayStart =""; 
String strDisplayLength=""; 
String[] arrayColumen = new String[new JSONUser().toArray().length]; 
int strSortId = 0; 
String strSort = ""; 
for(int i=0;i<jsonarray.size();i++) //从传递参数里面选出待用的参数 
{ 
JSONObject obj=(JSONObject)jsonarray.get(i); 
String strName = (String)obj.get("name"); 
String strValue = obj.get("value").toString(); 
if(strName.equals("sEcho")){ 
sEcho=strValue; 
} 
if(strName.equals("iDisplayStart")) { 
strDisplayStart=strValue; 
} 
if(strName.equals("iDisplayLength")) { 
strDisplayLength=strValue; 
} 
if(strName.equals("sColumns")){ 
arrayColumen = obj.get("value").toString().split(","); 

} 
if(strName.startsWith("iSortCol_")){ 
strSortId = Integer.parseInt(strValue) ;//排序列数 
} 
if(strName.startsWith("sSortDir_")){ 
strSort = strValue;//排序的方向 "desc" 或者 "asc". 
} 

} 

Map<Object, Object> params = new HashMap<Object, Object>() ; 
try { 
params = managerService.getUserList(参数); 
} catch (Exception e) { 
// TODO Auto-generated catch block 
e.printStackTrace(); 
} 
String count = (String)params.get("COUNT");//总数 
String[][] strData = (String[][])params.get("AO_DATA");//当前页显示的集合 
return successed(new DataTableReturnObject(Integer.parseInt(count) , Integer.parseInt(count), sEcho, strData)); 
}

4. クエリ方法

public Map<Object, Object> getUserList(Map<Object, Object> queryParams) 
throws Exception { 

String iCount = 总记录数; 
// 将查询结果转换为一个二维数组 
String[][] data = {}; 
if (lstUser != null && lstUser.size() > 0) { 
int record = lstUser.size(); 
data = new String[record][]; 
for (int i = 0; i < lstUser.size(); i++) { 
User objUser = (User) lstUser.get(i); 
JSONUser jsonUser = new JSONUser(); 
BeanUtils.copyProperties(jsonUser, objUser); 
data[i] = jsonUser.toArray(); 
} 
} 
queryParams.clear();// 情况map,重新设值使用 
queryParams.put("AO_DATA", data); 
queryParams.put("COUNT", iCount); 
return queryParams; 
}

保存された配列オブジェクトの属性は、フロントエンド ページに表示される列と同じ数の列を維持する必要があることに注意してください