Javascript 从主干客户端向NodeJS服务发送请求

不知何故，我无法将数据从主干模型发送到NodeJS服务。 主干模型

节点JS服务

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当我从主干视图console.logJSON.stringifyreq.body发布请求时；打印{从地址：，到地址：，金额：}

正如M Omary提到的，您需要使用主体解析器才能访问req.body。在app.post上方添加以下代码以查看其是否有效：

app.use(express.bodyParser());

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您的主干模型是空的，它发送您提供的默认值，我不明白什么不适合您。我认为您没有使用express.bodyParser

var app = express();
    app.listen(3000);
    app.use(express.json());

app.use(function (req, res, next) {

    // Website you wish to allow to connect
    res.setHeader('Access-Control-Allow-Origin', '*');

    // Request methods you wish to allow
    res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');

    // Request headers you wish to allow
    res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');

    // Set to true if you need the website to include cookies in the requests sent
    // to the API (e.g. in case you use sessions)
    res.setHeader('Access-Control-Allow-Credentials', true);

    // Pass to next layer of middleware
    next();
});


app.post('/sendCoins', function(req, res) {
    console.log(req.body.toAddress);
    console.log(JSON.stringify(req.body));
    console.log(req.body.amount);
});

app.use(express.bodyParser());