导出Word工具类（根据数据动态生成并跨列）

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package com.ksource.modules.common;   import net.sf.json.JSONArray; import net.sf.json.JSONObject; import net.sf.json.util.JSONTokener; import org.apache.poi.xwpf.usermodel.*; import org.openxmlformats.schemas.wordprocessingml.x2006.main.*; import org.springframework.stereotype.Component; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.*; import java.math.BigInteger; import java.util.ArrayList; import java.util.List;   /**  * @author dxy  *  */ @Component public class ExportWordUtil {       public void createTable(String name, JSONArray json, HttpServletRequest request, HttpServletResponse response) throws Exception {         XWPFDocument xdoc = new XWPFDocument();         XWPFParagraph xp = xdoc.createParagraph();         xp.setSpacingBefore(0);         XWPFRun r = xp.createRun();         r.setText(name+"查询信息");         r.setFontFamily("宋体");         r.setFontSize(18);         r.setTextPosition(10);         r.setBold(true);         r.addBreak(); // 换行         xp.setAlignment(ParagraphAlignment.CENTER);           int sign = 0;         for(int i = 0; i < json.size(); i++){             JSONObject jsonObject = JSONObject.fromObject(json.get(i).toString());             if ("1".equals(jsonObject.get("flag").toString())){                 sign = ++sign;                 xdoc.createParagraph();                 XWPFParagraph xp1 = xdoc.createParagraph();                 XWPFRun r1 = xp1.createRun();                 r1.setText((sign) +"."+ jsonObject.get("resourceName").toString());                 r1.setFontFamily("宋体");                 r1.setFontSize(16);                 r1.setBold(true);                 r1.setTextPosition(10);                 //r.addBreak(); // 换行                 xp1.setAlignment(ParagraphAlignment.LEFT);                 if (jsonObject.get("result") != null){                     int index = 0;                     JSONObject resultJsonObject = JSONObject.fromObject(jsonObject.get("result").toString());                     for(Object key : resultJsonObject.keySet()){                         String flag = parseJsonFormat(key.toString(),resultJsonObject.get(key).toString());                         System.out.println(resultJsonObject.get(key).toString());                         System.out.println(flag);                         writeDoc(xdoc,(sign)+"."+(++index),key.toString(),resultJsonObject.get(key).toString(),flag);                     }                 }             }         }         downloadWord(xdoc,request,response);     }       private void writeDoc(XWPFDocument xdoc, String index, String key, String value, String flag){         xdoc.createParagraph();         XWPFParagraph xp = xdoc.createParagraph();         XWPFRun r = xp.createRun();         r.setText(index +"."+ key);         r.setFontFamily("宋体");         r.setFontSize(14);         r.setBold(true);         r.setTextPosition(10);         //r.addBreak(); // 换行         xp.setAlignment(ParagraphAlignment.LEFT);         if("1".equals(flag)){             getDetail(xdoc,value);         }else if("2".equals(flag)){             getList(xdoc,value);         }else if("3".equals(flag)){             getDetailList(xdoc,value);         }     }       /**      * 获取详情      * @param xdoc      * @param value      */     public void getDetail(XWPFDocument xdoc, String value){         xdoc.createParagraph();         int keyCount = 0;         JSONObject valueJsonObject = JSONObject.fromObject(value);         List list = new ArrayList();         for(Object k : valueJsonObject.keySet()){             ++keyCount;             list.add(k.toString());             list.add(valueJsonObject.get(k).toString());         }         int fromCellIndex = keyCount*2 % 6;         Integer row_total_count = (keyCount*2%6 == 0) ? keyCount*2/6 : (keyCount*2/6 + 1);         Integer col_total_count = 6; // 表格最多的列数         if(keyCount * 2 < 6){             col_total_count = keyCount * 2;         }         XWPFTable xTable = xdoc.createTable();         CTTbl ttbl = xTable.getCTTbl();         CTTblPr tblPr = ttbl.getTblPr() == null ? ttbl.addNewTblPr() : ttbl.getTblPr();         CTTblWidth tblWidth = tblPr.isSetTblW() ? tblPr.getTblW() : tblPr.addNewTblW();         tblWidth.setW(new BigInteger("9072"));         tblWidth.setType(STTblWidth.DXA);         for (int i = 0; i < row_total_count; i++) {             XWPFTableRow row = xTable.insertNewTableRow(i);             row.setHeight(450);             int t = i*col_total_count;             for (int j = 0; j < col_total_count; j++) {                 XWPFTableCell cell = row.createCell();                 XWPFParagraph p = cell.addParagraph();                 p.setAlignment(ParagraphAlignment.CENTER);                 p.setSpacingBefore(100);                 XWPFRun xRun = p.createRun();                 xRun.setFontSize(9);                 if ((j+t) < list.size()){                     if(j % 2 == 0){                         xRun.setBold(true);//是否粗体                         cell.setColor("f0f7ff");                     }                     if(!"".equals(list.get(j+t).toString())){                         xRun.setText(list.get(j+t).toString());                     }else{                         xRun.setText("暂无");                     }                 }else if(i == row_total_count - 1 && j == col_total_count - 1){                     mergeCellsHorizontal(xTable,row_total_count-1,col_total_count,fromCellIndex-1,col_total_count-1);                 }             }         }         xTable.removeRow(row_total_count);     }       /**      * 获取列表      * @param xdoc      * @param value      */     public void getList(XWPFDocument xdoc, String value){         JSONArray valueJsonArray = JSONArray.fromObject(value);         for (int i = 0; i < valueJsonArray.size(); i++){             getDetail(xdoc,valueJsonArray.get(i).toString());         }     }       /**      * 获取详情和列表      * @param xdoc      * @param value      */     public void getDetailList(XWPFDocument xdoc, String value){         JSONObject valueJsonObject = JSONObject.fromObject(value);         for(Object k : valueJsonObject.keySet()){             String flag = parseJsonFormat(k.toString(),valueJsonObject.get(k).toString());             if("1".equals(flag)){                 getDetail(xdoc,valueJsonObject.get(k).toString());             }else if("2".equals(flag)){                 getList(xdoc,valueJsonObject.get(k).toString());             }         }     }       /**      * 判断json格式      * @param key      * @param value      * @return      */     public String parseJsonFormat(String key, String value){         //当flag=1时json格式为详情，当flag=2时json格式为列表，当flag=3时json格式为详情+列表         String flag = "";         Object json = new JSONTokener(value).nextValue();         if(json instanceof JSONObject){             JSONObject jsonObject = (JSONObject)json;             for(Object k : jsonObject.keySet()){                 boolean isJSON = isJSON(jsonObject.get(k).toString());                 if(isJSON){                     flag = "3";                     break;                 }else{                     flag = "1";                 }             }         }else if (json instanceof JSONArray){             JSONArray jsonArray = (JSONArray)json;             flag = "2";         }         return flag;     }       /**      * 判断是否为json      * @param str      * @return      */     public boolean isJSON(String str) {         boolean result = false;         try {             Object obj = JSONObject.fromObject(str);             result = true;         } catch (Exception e) {             result=false;         }         return result;     }       /**      * 设置表头内容      * @param cell      * @param text      * @param bgcolor      * @param width      */     private static void setCellText(XWPFDocument xdoc, XWPFTableCell cell,                                     String text, String bgcolor, int width) {         CTTc cttc = cell.getCTTc();         CTTcPr cellPr = cttc.addNewTcPr();         cellPr.addNewTcW().setW(BigInteger.valueOf(width));         XWPFParagraph paragraph = cell.getParagraphs().get(0);         paragraph.setAlignment(ParagraphAlignment.CENTER); //设置表头单元格居中         XWPFRun run  = paragraph.createRun();         run.setFontFamily("仿宋_GB2312");         run.setFontSize(16); //设置表头单元格字号         //run.setBold(true); //设置表头单元格加粗         run.setText(text);     }       /**      * 设置列宽      *      * @param index      * @return      */     private static int getCellWidth(int index) {         int cwidth = 1000;         if (index == 0) {             cwidth = 1000;         } else if (index == 1) {             cwidth = 2100;         } else if (index == 2) {             cwidth = 3200;         } else if (index == 3) {             cwidth = 2100;         }         return cwidth;     }       /**      * 跨列合并      * @param table      * @param row    所合并的行      * @param fromCell    起始列      * @param toCell    终止列      */     public void mergeCellsHorizontal(XWPFTable table, int row, int colNum, int fromCell, int toCell) {         table.getRow(row).getCell(fromCell).getCTTc().addNewTcPr().addNewTcW()                 .setW(BigInteger.valueOf((9072 / colNum) * (toCell - fromCell + 1)));         for (int cellIndex = fromCell; cellIndex <= toCell; cellIndex++) {             XWPFTableCell cell = table.getRow(row).getCell(cellIndex);             if ( cellIndex == fromCell ) {                 // The first merged cell is set with RESTART merge value                   cell.getCTTc().addNewTcPr().addNewHMerge().setVal(STMerge.RESTART);             } else {                 // Cells which join (merge) the first one, are set with CONTINUE                   cell.getCTTc().addNewTcPr().addNewHMerge().setVal(STMerge.CONTINUE);             }         }     }       /**      * 跨行合并      *      * @param table      * @param col      * @param fromRow      * @param toRow      */     public static void mergeCellsVertically(XWPFTable table, int col,                                             int fromRow, int toRow) {         for (int rowIndex = fromRow; rowIndex <= toRow; rowIndex++) {             XWPFTableCell cell = table.getRow(rowIndex).getCell(col);             if (rowIndex == fromRow) {                 // The first merged cell is set with RESTART merge value                 cell.getCTTc().addNewTcPr().addNewVMerge()                         .setVal(STMerge.RESTART);             } else {                 // Cells which join (merge) the first one, are set with CONTINUE                 cell.getCTTc().addNewTcPr().addNewVMerge()                         .setVal(STMerge.CONTINUE);             }         }     }       /**      * 将文件转换成byte数组      * @return      */     public byte[] fileToByte(File file){         byte[] buffer = null;         try         {             FileInputStream fis = new FileInputStream(file);             ByteArrayOutputStream bos = new ByteArrayOutputStream();             byte[] b = new byte[1024];             int n;             while ((n = fis.read(b)) != -1)             {                 bos.write(b, 0, n);             }             fis.close();             bos.close();             buffer = bos.toByteArray();         }catch (FileNotFoundException e){             e.printStackTrace();         }catch (IOException e){             e.printStackTrace();         }         return buffer;     }       /**      * 下载      * @param xdoc      * @param request      * @param response      * @throws Exception      */     public static void downloadWord(XWPFDocument xdoc, HttpServletRequest request, HttpServletResponse response) throws Exception {         response.setCharacterEncoding("UTF-8");         //response.setHeader("Content-disposition", "attachment;filename=" + fileName);         response.setContentType("application/force-download");// 设置强制下载不打开         response.setHeader("Content-disposition", "attachment");         //刷新缓冲         response.flushBuffer();         OutputStream ouputStream = response.getOutputStream();         //将word写入到response的输出流中，供页面下载该Excel文件         xdoc.write(ouputStream);         ouputStream.flush();         ouputStream.close();     } }