一、效果图
二、js代码
$("body").on("click", "#btn_print", function () {
assessEvaluationSummaryPrint();
});
function assessEvaluationSummaryPrint() {
var arr_columns = assemble_dg_columns();
var key_columns = [];
var value_columns = [];
for (var i = 0; i < arr_columns.length; i++) {
if(NOTNULL(arr_columns[i].title)&&arr_columns[i].title!="id"){
key_columns.push(arr_columns[i].field);
value_columns.push(arr_columns[i].title);
}
}
window.location.href= "jee/VAssessEvaluationSummaryC/exportExecl?key_columns="+key_columns+"&value_columns="+value_columns;
}
三、后台代码
（1）controller
@RequestMapping(value="jee/VAssessEvaluationSummaryC")
@Controller
public class VAssessEvaluationSummaryController extends BaseEntityController<VAssessEvaluation>{
public VAssessEvaluationSummaryController(){
super(VAssessEvaluation.class);
}
@Resource
private VAssessEvaluationSummaryService vAssessEvaluationSummaryService;
@ResponseBody
@SystemControllerLog(description="考核评价汇总--导出功能")
@RequestMapping(value="exportExecl")
public ReturnDatas exportExecl(String[] key_columns,String[] value_columns,HttpServletResponse response){
ReturnDatas returnDatas = ReturnDatas.getSuccessReturnDatas();
try {
response.setCharacterEncoding("UTF-8");
response.setContentType("application/msexcle");
response.setHeader("content-disposition", "attachment;filename=test.xlsx");
HSSFWorkbook workbook = vAssessEvaluationSummaryService.exportExecl(key_columns,value_columns);
//写入Excel文件
OutputStream outputStream = response.getOutputStream();
workbook.write(outputStream);
outputStream.close();
returnDatas.setStatus(ReturnDatas.SUCCESS);
return returnDatas;
} catch (Exception e) {
e.printStackTrace();
LogUtil.error("考核评价汇总--导出功能异常："+e.getMessage(),e);
returnDatas.setStatus(ReturnDatas.ERROR);
returnDatas.setMessage("考核评价汇总--导出功能异常。");
}
return returnDatas;
}
}
（2）service
@Service("vAssessEvaluationSummaryService")
public class VAssessEvaluationSummaryServiceImpl implements VAssessEvaluationSummaryService {
private List<VAssessEvaluation> list;
@Resource
private IbaseInfoService baseInfoService;
/**
*
* @Description 考核评价汇总--查询操作
* @param rows
* @param page
* @param sort
* @param order
* @param key
* @param start_time
* @param end_time
* @param id_postduty
* @param question_type
* @return PageResult
* @throws Exception
*
*/
@Override
public PageResult listAllVassessEvaluationSummary(int rows,int page,String sort, String order,String key,String start_time, String end_time,
String id_postduty,String question_type) throws Exception {
if(StringUtils.isBlank(key)) {
key = "";
}
List<Object> ls_param = new ArrayList<Object>();
String hql = "select u from VAssessEvaluation u where (del_flag is null or del_flag != '1')";
String hqlCount = "select count(u) from VAssessEvaluation u where (del_flag is null or del_flag != '1')";
if(StringUtils.isNotBlank(key)) {
hql+= " and ( instr(type,?) > 0 or instr(updateuser,?)>0 or instr(updatetime,?)>0 )";
hqlCount += " and ( instr(type,?) > 0 or instr(updateuser,?)>0 or instr(updatetime,?)>0 )";
ls_param.add(key);
ls_param.add(key);
ls_param.add(key);
}
if(StringUtils.isNotBlank(start_time)) {
hql += " and find_date >= ?";
hqlCount += " and find_date >= ?";
ls_param.add(start_time);
}
if(StringUtils.isNotBlank(end_time)) {
hql += " and find_date <= ?";
hqlCount += " and find_date <= ?";
ls_param.add(end_time);
}
if(StringUtils.isNotBlank(question_type)) {
hql += " and id_question_type = ?";
hqlCount += " and id_question_type = ?";
ls_param.add(question_type);
}
if(StringUtils.isNotBlank(id_postduty)) {
hql += " and id_postduty = ?";
hqlCount += " and id_postduty = ?";
ls_param.add(id_postduty);
}
if(StringUtils.isNotBlank(sort)&&StringUtils.isNotBlank(order)) {
hql += " order by " + sort + " " + order;
}
list = baseInfoService.listQueryByHql(hql,ls_param,rows,page);
Object total = baseInfoService.getObjectByHql(hqlCount,ls_param);
PageResult result = new PageResult();
if (list != null) {
result.setRows(list);
if (total != null) {
result.setTotal(Integer.parseInt(total.toString()));
} else {
result.setTotal(0);
}
}
return result;
}
/**
*
* @Description 考核评价汇总--导出功能
* @param key_columns
* @param value_columns
* @return HSSFWorkbook
* @throws Exception
*
*/
@Override
public HSSFWorkbook exportExecl(String[] key_columns, String[] value_columns) throws Exception {
List<List<String>> list1 = new ArrayList<>();
for (VAssessEvaluation v : list) {
List<String> list2 = new ArrayList<>();
for (int i = 0; i < key_columns.length; i++) {
String field = ExportUtil.getFiled(v, key_columns[i]);
if("performance".equals(key_columns[i])){
if(v.getPerformance()!=0) {
list2.add("-"+field);
}else {
list2.add(field);
}
}else {
list2.add(field);
}
}
list1.add(list2);
}
int[] arr = {1,2,3}; //要合并的列，从0开始
int judge = 10; //判断字段，没有则为-1
return ExportUtil.exportAutoCell("考核评价汇总",key_columns,value_columns,list1,arr,judge);
}
}
（3）导出工具类
public class ExportUtil {
/**
*
* @Date 2018年6月19日 下午3:46:27
* @Description 导出自动合并单元格
* @Fcunction exportAutoCell
* @param sheetName
* @param key_columns
* @param value_columns
* @param list
* @param field_arr
* @param judge
* @return HSSFWorkbook
*
*/
public static HSSFWorkbook exportAutoCell(String sheetName,String[] key_columns,String[] value_columns,List<List<String>> list,int[] field_arr,int judge){
//创建一个Excel文件
HSSFWorkbook workbook = new HSSFWorkbook();
//创建一个工作表
HSSFSheet sheet = workbook.createSheet(sheetName);
//添加表头行
HSSFRow hssfRow = sheet.createRow(0);
//设置单元格格式
HSSFCellStyle cellStyle = workbook.createCellStyle();
//设置单元格边框
cellStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN);
cellStyle.setBorderTop(HSSFCellStyle.BORDER_THIN);
cellStyle.setBorderRight(HSSFCellStyle.BORDER_THIN);
cellStyle.setBorderLeft(HSSFCellStyle.BORDER_THIN);
cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); //水平居中
cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); //垂直居中
for (int i = 0; i < value_columns.length; i++) {
//添加表头内容
HSSFCell headCell = hssfRow.createCell(i);
headCell.setCellValue(value_columns[i]);
headCell.setCellStyle(cellStyle);
}
//把数据添加到excel
for (int i = 0; i < list.size(); i++) { //每一行
hssfRow = sheet.createRow(i + 1);
for (int j = 0; j < list.get(i).size(); j++) { //每一行的每一格
//创建单元格，并设置值
HSSFCell cell = hssfRow.createCell(j);
cell.setCellValue(list.get(i).get(j));
cell.setCellStyle(cellStyle);
}
}
//自动合并
for (int i = list.size()-1; i <= 1; i--) { //每一行（从上往下遍历如果第三行和前两行合并过的合并，合并效果差，所以倒着遍历）
for (int k = 0; k < field_arr.length; k++) {
int field = field_arr[k]; //要排序的字段
if(list.get(i).get(field).equals(list.get(i-1).get(field))){ //相邻的上下两行
int rowspan = 2;
for (int j = 2; i-j >= 0; j++) { //判断上下多行内容一样
if(!list.get(i).get(field).equals(list.get(i-j).get(field))){
break;
}else{
if(judge!=-1) {
if(!list.get(i).get(judge).equals(list.get(i-j).get(judge))){
break;
}
}
rowspan = j+1;
}
}
sheet.addMergedRegion(new CellRangeAddress(i-rowspan+2, i+1, field, field));
}
}
}
return workbook;
}
/**
*
* @Author zhangshizhe
* @Date 2018年6月15日 下午1:53:52
* @Description 利用反射获取get方法
* @Fcunction getFiled
* @param object
* @param field
* @return String
*
*/
public static String getFiled(Object object, String field) {
Class<? extends Object> clazz = object.getClass();
PropertyDescriptor pd = null;
Method getMethod = null;
try {
pd = new PropertyDescriptor(field, clazz);
if (null != pd) {
// 获取field属性的get方法
getMethod = pd.getReadMethod();
Object invoke = getMethod.invoke(object);
if(invoke==null) {
invoke = "";
}
return invoke.toString();
}
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
}
注：合并导org.apache.poi.ss.util.CellRangeAddress包，org.apache.poi.hssf.util.CellRangeAddress包已废弃；
import org.apache.poi.ss.util.CellRangeAddress;
合并addMergedRegion方法四个属性分别是（开始行，结束行，开始列，结束列）
sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, 1));