easyui DataGrid 工具类之 TableUtil class

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.collections.MapUtils;
import org.apache.poi.ss.formula.functions.T;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.dom.DOMDocument;

import com.gsoft.cos.core.util.Assert;
import com.gsoft.modules.infrastructureManagement.utils.execl.ColumnVO;

/**
* @ClassName: TableUtil
* @Description: excel工具类
*/
public class TableUtil {

public static String print(List<List<ColumnVO>> list, List<T> datas) {

return print(list, null, datas);
}

@SuppressWarnings("unchecked")
public static String print(List<List<ColumnVO>> list, String title,
List<?> datas) {
Document doc = new DOMDocument();
doc.setXMLEncoding("UTF-8");
Element table = doc.addElement("table");
table.addAttribute("class", "print-table");
if (Assert.isNotEmpty(title)) {
Element caption = table.addElement("caption");
caption.setText(title);
}
// 表头
List<String> contains = new ArrayList<String>();
Map<String, String> keyMap = new HashMap<String, String>();
for (int i = 0; i < list.size(); i++) {
List<ColumnVO> columns = list.get(i);
int startColumn = 0;
Element tr = table.addElement("tr");
tr.addAttribute("class", "print-th");
for (int j = 0; j < columns.size(); j++) {
if (!contains.contains(startColumn + "," + i)) {
ColumnVO column = columns.get(j);
if ((Assert.isNotEmpty(column.getHidden()) && column
.getHidden()) || !column.isExported()) {
continue;
}
if (Assert.isNotEmpty(column.getField())) {
keyMap.put(String.valueOf(startColumn),
column.getField());
}
Element td = tr.addElement("td");
td.setText(column.getTitle());
int colspan = 1;
if ((Assert.isNotEmpty(column.getColspan()) && column
.getColspan() > 1)) {
colspan = column.getColspan();
}
int rowspan = 1;
if (Assert.isNotEmpty(column.getRowspan())
&& column.getRowspan() > 1) {
rowspan = column.getRowspan();
}
if (colspan > 1) {
td.addAttribute("colspan", String.valueOf(colspan));
}
if (rowspan > 1) {
contains.add(startColumn + "," + (rowspan - 1));
td.addAttribute("rowspan", String.valueOf(rowspan));
}
startColumn += colspan;
} else {
startColumn += 1;
}
}
}

Object object = null;
// 遍历集合
if (datas != null) {
for (int i = 0; i < datas.size(); i++) {
object = datas.get(i);
Element tr = table.addElement("tr");
tr.addAttribute("class", "print-tr");
Map<String, Object> map = new HashMap<String, Object>();
if (!(object instanceof Map)) {
try {
map = BeanUtils.describe(object);
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
}
}

for (int j = 0; j < keyMap.size(); j++) {
String key = keyMap.get(String.valueOf(j));
String value = MapUtils.getString(map, key);
Element td = tr.addElement("td");
td.addAttribute("class", "print-td");
td.setText(value);
}
}
}
return table.asXML();
}
}