打印出来的数据如图：

但是在取值的时候会报如下的错误

WAServiceMainContext.js:2 TypeError: Cannot read property 'rows' of undefined
    at _callee2$ (index.js? [sm]:73)
    at L (regenerator.js:1)
    at Generator._invoke (regenerator.js:1)
    at Generator.t.<computed> [as next] (regenerator.js:1)
    at asyncGeneratorStep (asyncToGenerator.js:1)
    at c (asyncToGenerator.js:1)
    at asyncToGenerator.js:1
    at new Promise (<anonymous>)
    at asyncToGenerator.js:1
    at index.js? [sm]:72(env: Windows,mp,1.06.2209070; lib: 2.23.4)