导出格式化时候bug

src/lib/systemLib.ts

@@ -444,6 +444,9 @@ export function setComboStore(sender, config, getDictFn, bizKey, multiValueSepar
             }
 
             const renderer = (value, metaData) => {
+                if (!value && value!=0 ) {
+                    return ''
+                }
                 const valueField = r.field[0]
                 const displayField = r.field[1]
                 const separator = multiValueSeparator