java动态拼接datagrid的columns

//构造表头

@Override

public String getDynamicColumns(String dateTime) {

//动态设置最上表头的宽度

int colCount = 2;

//展示钢种表头

String head = "[{title:\"" +"日期：" + dateTime +"\",\"colspan\":2,\"rowspan\":1,width:100},";

List<Map<String,Object>> workingAreaList = dao.getWorkingArea();

for(int i = 0;i<workingAreaList.size();i++){

String workingAreaCode = (String) workingAreaList.get(i).get("workingAreaCode");

String workingAreaName = (String) workingAreaList.get(i).get("workingAreaName");

//获取当天工区对应的班组个数

int count = dao.getWorkingTeamCount(workingAreaCode) + 1;

colCount += count;

head += "{title:\""+workingAreaName+"\",\"colspan\":"+count+",\"rowspan\":1,width:100},";

}

head += "{title:\"\",\"colspan\":1,\"rowspan\":1,width:100}],";

//报表最上表头

String title = "[{title:\"班组日报表\",align:\"center\",\"colspan\":"+colCount+",\"rowspan\":1}],";

//构建easyui表格Columns属性

String content = "[{field : \"elmtName\",title : \"成本要素\",width : 100},";

content += "{field : \"amountMesr\",title : \"单位\",width : 100},";

for (int j = 0; j < workingAreaList.size(); j++) {

String workingAreaName = (String) workingAreaList.get(j).get("workingAreaName");

String workingAreaCode = (String) workingAreaList.get(j).get("workingAreaCode");

content += "{field : \"" + workingAreaName +"\",title : \"合计\",width : 100},";

List<Map<String,Object>> jsonList = dao.getDynamicColumns(workingAreaCode);

for(int i = 0;i<jsonList.size();i++){

String workingTeamName = (String) jsonList.get(i).get("workingTeamName");

content += "{field : \""+workingTeamName+"\",title : \""+workingTeamName+"\",width : 100},";

}

}

content += "]";

String columns = "["+title+head+content+"]";

return columns;

}