When using poi to export, set a field as an external hyperlink, such as opening Baidu

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 1 /**
 2      * 导出
 3      *
 4      * @param policyQueryVo
 5      * @param headtitle
 6      * @return
 7      */
 8     public HSSFWorkbook findExcel(PolicyQueryVo policyQueryVo, String headtitle, String fieldName) {
 9         //获取要导出的内容
10         List<PolicyQueryVo> policyQueryList = policyQueryDao.getPolicyQueryList(null, null, policyQueryVo);
11         HSSFWorkbook workbook = new HSSFWorkbook();
12         // Create a header cell and add the corresponding content 
13          String[] cells = headtitle.split("," );
 14          // Determine whether the collection is empty 
15          if (policyQueryList != null ) {
 16              outputColums(cells, policyQueryList , workbook, fieldName);
 17          }
 18          return workbook;
 19      }

 

1  /** 
2       * Set each row of data
 3       *
 4       * @param headers
 5       * @param colums
 6       * @param hssfWorkbook
 7       */ 
8      public  static  void outputColums(String[] headers, List<?> colums, HSSFWorkbook hssfWorkbook, String fieldName) {
 9          // Declare a sheet 
10          HSSFSheet sheet = hssfWorkbook.createSheet();
 11          // Create header 
12          HSSFRow row = sheet.createRow(0 );
 13         for ( int i = 0; i < headers.length; i++ ) {
 14              HSSFCell cell = row.createCell(i);
 15  cell.setCellValue             (headers[i]);
 16          }
 17          // How many rows to loop through
          String[] fieldNames = fieldName.split("," );
 19 for ( int i = 0; i < colums.size(); i++ ) {
 20              row = sheet.createRow(i + 1 );
 21 // create from rowIndex Line 22              Object obj = colums.get(i);
 23 // How many columns to loop for 24                      
             
             for ( int j = 0; j < headers.length; j++ ) {
 25                  Object value = getFieldValueByName(fieldNames[j], obj);
 26                  if (fieldNames[j].equals("policyBtn" )) {
 27                      HSSFCell cell = row.createCell(j);
 28                      cell.setCellType(HSSFCell.CELL_TYPE_FORMULA);
 29                      //Excle's HYPERLINK() function is used here, parameter 1 of the function: the address to be accessed, parameter 2: to display the text on Excle, both are required It is enclosed in quotation marks, so the escape is used here
 30                      cell.setCellFormula("HYPERLINK(" + "\"https://www.baidu.com/\"" + "," + "\"download\")" );
 31                     cell.setCellStyle(linkStyle(hssfWorkbook));
32                 } else if (value != null) {
33                     row.createCell(j).setCellValue(value.toString());
34                 } else {
35                     row.createCell(j).setCellValue("");
36                 }
37             }
38         }
39     }

 1 /**
 2      * 根据对象的属性获取值
 3      *
 4      * @param fieldName
 5      * @param obj
 6      * @return
 7      */
 8     private static Object getFieldValueByName(String fieldName, Object obj) {
 9         String firstLetter = fieldName.substring(0, 1).toUpperCase();
10         String getter = "get" + firstLetter + fieldName.substring(1);
11         try {
12             Method method = obj.getClass().getMethod(getter, new Class[]{});
13             Object value = method.invoke(obj, new Object[]{});
14             return value;
15         } catch (Exception e) {
16             ////System.out.println("属性不存在");
17             return null;
18         }
19     }

1  /** 
2       * Set styles such as hyperlinks
 3       *
 4       * @param hssfWorkbook
 5       * @return 
6       */ 
7      public  static HSSFCellStyle linkStyle(HSSFWorkbook hssfWorkbook) {
 8          // Generate and set another style 
9          HSSFCellStyle linkStyle = hssfWorkbook. createCellStyle();
 10          // set cell border
 11  //         linkStyle.setBorderBottom((short) 1);
 12  //         linkStyle.setBorderLeft((short) 1);
 13  //        linkStyle.setBorderRight((short) 1);
 14  //         linkStyle.setBorderTop((short) 1);
 15          // Set cell background color
 16  //         linkStyle.setFillForegroundColor(HSSFColor.SKY_BLUE.index);
 17  //         linkStyle. setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); 
18          HSSFFont font = hssfWorkbook.createFont();
 19          font.setFontName(HSSFFont.FONT_ARIAL);
 20          // Set font underline 
21          font.setUnderline(( byte ) 1 );
 22          // Set font color 
twenty three         font.setColor(HSSFColor.BLUE.index);
 24          // Set the font 
25          linkStyle.setFont(font);
 26          // Generate another font
 27  //         font.setBoldweight(Font.BOLDWEIGHT_NORMAL);
 28          // Apply the font to Current style 
29          linkStyle.setFont(font);
 30          return linkStyle;
 31      }