The maximum length of cell contents (text) is 32,767 characters因为Excel单元格容量超出导致报错

报错The maximum length of cell contents (text) is 32,767 characters，这是因为Excel单元格的字符只能是32,767以内。

假设content是要存入Excel单元格的字符串，可以每隔30000字符将字符串截断：

				String content = map.get("CONTENT");
​				String content1 = "",content2 = "", content3 = "";
​				if(content.length() > 60000){
​					content1 = content.substring(0,30000);
​					content2 = content.substring(30000,60000);
​					content3 = content.substring(60000);
​				}else if(content.length() > 30000){
​					content1 = content.substring(0,30000);
​					content2 = content.substring(30000);
​				}else{
​					content1 = content;
​				}

将Excel导入数据库，这时候要把字符串重新拼接：
假设content是要导入数据库的字符串,val是遍历出的单元格数据。

				String content = "";			
				case 4:
					content = val;
					break;
				case 5:
					if(StringUtils.isNotBlank(val)){
						content = content + val;
					}
					break;
				case 6:
					if(StringUtils.isNotBlank(val)){
						content = content + val;
					}
					m.put("FORM_CONTENT", content); // 表单原始文本3
					break;