调整excel输出单元格字符串上限

src/main/java/com/zhiwei/brandkbs2/easyexcel/EasyExcelUtil.java

@@ -14,6 +14,7 @@ import org.apache.logging.log4j.Logger;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.servlet.http.HttpServletResponse;
+import java.lang.reflect.Field;
 import java.net.URLEncoder;
 import java.util.ArrayList;
 import java.util.List;
@@ -153,6 +154,7 @@ public class EasyExcelUtil {
      */
     public static <T> void download(String fileName, String sheetName, Class<T> clazz, List<T> datas, HttpServletResponse response) {
         try {
+            formatExcelExports(clazz, datas);
             response.setContentType("application/vnd.ms-excel");
             response.setCharacterEncoding("utf-8");
             // 这里URLEncoder.encode可以防止中文乱码
@@ -187,4 +189,27 @@ public class EasyExcelUtil {
             log.error("file:{}，download error：", fileName, e);
         }
     }
+
+    private static <T> void formatExcelExports(Class<T> clazz, List<T> datas){
+        List<Field> stringFields = new ArrayList<>();
+        // 记录需要设置的部分
+        for (Field field : clazz.getDeclaredFields()) {
+            // String格式截取前32767位
+            if (field.getGenericType().toString().equals(String.class.toString())) {
+                field.setAccessible(true);
+                stringFields.add(field);
+            }
+        }
+        datas.forEach(data -> {
+            for (Field field : stringFields) {
+                try {
+                    // 截取为excel单元格允许的最大长度
+                    field.set(data, StringUtils.substring((String) (field.get(data)), 0, 32767));
+                } catch (IllegalAccessException e) {
+                    log.error(e);
+                }
+            }
+        });
+    }
+
 }

src/main/java/com/zhiwei/brandkbs2/pojo/dto/ExportSearchWholeDTO.java

@@ -5,7 +5,6 @@ import com.alibaba.excel.annotation.write.style.ColumnWidth;
 import com.alibaba.fastjson.JSONObject;
 import lombok.Data;
 import lombok.ToString;
-import org.apache.commons.lang3.StringUtils;
 
 import java.util.Date;
 
@@ -44,10 +43,6 @@ public class ExportSearchWholeDTO {
         dto.setTime(new Date((Long) jsonObject.get("time")));
         dto.setPlatform(jsonObject.getString("platform"));
         dto.setChannel(jsonObject.getString("channel"));
-        // 截取为excel单元格允许的最大长度
-        dto.setTitle(StringUtils.substring(jsonObject.getString("title"), 0, 32767));
-        dto.setContent(StringUtils.substring(jsonObject.getString("content"), 0, 32767));
-        dto.setUrl(StringUtils.substring(jsonObject.getString("url"), 0, 32767));
         return dto;
     }
 }