columns: [ {field: 'state',checkbox: true,align: 'center',valign: 'middle'}, {field: 'contacts',sortable: true,title: '姓名'}, {field: 'sex',sortable: true,title: '性别'}, {field: 'position',sortable: true,title: '职位'}, {field: 'address',sortable: true,t