Mybatis 動態傳sql可以查詢表名，任意表名，導出表中的數據

導出數據我用的是poi導出excel文件在pom文件中引入

<dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.17</version>
        </dependency>
        <!-- poi-ooxml XSSF is our port of the Microsoft Excel XML (2007+) file format (OOXML) to pure Java -->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.17</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml-schemas</artifactId>
            <version>3.17</version>
        </dependency>

獲取任意表名和表中的字段參考文章

Mybatis 動態傳sql可以查詢表名，任意表名，不固定字段的個數返回未定義的類型以及增刪改

之后再controller層引用

 @ApiOperation(value = "導出任意表中的數據", notes = "")
    @GetMapping("/executeTableInfo")
    @SystemControllerLog(title = "導出數據",businessType = BusinessType.EXPORT)
    public void executeTableInfo(@RequestParam("tableName")String tableName,HttpServletRequest request,
                              HttpServletResponse response) throws IOException {
        List<Map<String, String>> maps = managerTableService.executeTableInfo(tableName);
        List<String> tableCloumName = managerTableService.getTableCloumName("'"+tableName+"'");
        HSSFWorkbook workbook = new HSSFWorkbook();
        HSSFSheet sheet=workbook.createSheet(tableName);

        //設置導出的文件的名字
        String filename=tableName+".xls";
        //創建表頭
        HSSFRow tablerow = sheet.createRow(0);
        //循環添加表頭數據
        for (int i = 0; i < tableCloumName.size(); i++) {
            HSSFCell cell=tablerow.createCell(i);
            HSSFRichTextString text=new HSSFRichTextString(tableCloumName.get(i));
            cell.setCellValue(text);
        }
        for (int i = 0; i < maps.size(); i++) {

            // 一個List對象是一個Map，一行數據，一個Map對象對應一行里的一條數據
            Map tableMap = maps.get(i);

            //表頭是第0行，所以從第一行開始創建
            Row row = sheet.createRow(i + 1);

            //循環創建單元格
            for (int j = 0; j < tableCloumName.size(); j++) {
                //獲取指定字段的值，判斷是否為空
                Object object=tableMap.get(tableCloumName.get(j));
                String val="";
                if(object!=null){
                    val=object.toString();
                }
                row.createCell(j).setCellValue(val);
            }
        }
        response.setContentType("application/octet-stream");
        response.setHeader("Content-disposition", "attachment;filename="+filename);
        try {
            response.flushBuffer();
            workbook.write(response.getOutputStream());
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

這么寫就可以導出任何表中的數據，親測可行