去掉一些warning

src/Table.js

@@ -310,6 +310,8 @@ class Table extends Component {
       'or set `rowKey` to an unique primary key.'
     );
     return key;
+
+    
   }
 
   getExpandedRows() {

src/TableHeader.js

@@ -538,7 +538,7 @@ class TableHeader extends Component {
     return (
       <thead className={`${clsPrefix}-thead`} {...attr} data-theader-fixed='scroll' ref={_thead=>this._thead = _thead} >
         {rows.map((row, index) => (
-          <tr style={rowStyle} className={(filterable && index == rows.length - 1)?'filterable':''}>
+          <tr key={index} style={rowStyle} className={(filterable && index == rows.length - 1)?'filterable':''}>
             {row.map((da, columIndex, arr) => {
               let thHover = da.drgHover
                 ? ` ${clsPrefix}-thead th-drag-hover`
@@ -558,6 +558,7 @@ class TableHeader extends Component {
               //避免key为undefined
               // if(da.dataindex && da.key ===undefined ){
                 keyTemp.key = da.key || da.dataindex || index+'-'+columIndex
+                
               // } 
               if (filterable && index == rows.length - 1) {
                 da.children = this.filterRenderType(
@@ -582,7 +583,6 @@ class TableHeader extends Component {
                   thClassName += ` ${fixedStyle}`;
                 if(!da.fixed){
              
-                  // console.log(keyTemp.key);
                   return (<th {...da}  {...keyTemp} className={thClassName} data-th-fixed={da.fixed} 
                         data-line-key={da.key} data-line-index={columIndex} data-th-width={da.width} >
                               {da.children}

src/TableRow.js

@@ -162,7 +162,7 @@ class TableRow extends Component{
     const {
       clsPrefix, columns, record, height, visible, index,
       expandIconColumnIndex, expandIconAsCell, expanded, expandRowByClick,
-      expandable, onExpand, needIndentSpaced, indent, indentSize,isHiddenExpandIcon,fixed,
+      expandable, onExpand, needIndentSpaced, indent, indentSize,isHiddenExpandIcon,fixed,hoverKey
     } = this.props;
     let showSum = false;
     let { className } = this.props;
@@ -221,8 +221,7 @@ class TableRow extends Component{
     if (!visible) {
       style.display = 'none';
     }
- 
-    return (
+    return ( 
       <tr
         onClick={this.onRowClick}
         onDoubleClick={this.onRowDoubleClick}
@@ -230,6 +229,7 @@ class TableRow extends Component{
         onMouseLeave={this.onMouseLeave}
         className={`${clsPrefix} ${className} ${clsPrefix}-level-${indent}`}
         style={style}
+        // key={hoverKey}
         ref={this.bindElement}
       >
         {cells.length>0?cells:<td></td>}