vue-cli proxy post json body 一直pending，后台接收不到body数据

    proxy: {
      "/dev-api/citest/": {
        target: "http://127.0.0.1:86/index.php",
        logLevel: "debug",
        changeOrigin: true,
        pathRewrite: { "^/dev-api/citest/": "/" },
        onProxyReq: function (proxyReq, req, res, options) {
          if (req.body) {
            let bodyData = JSON.stringify(req.body);
            proxyReq.setHeader("Content-Type", "application/json");
            proxyReq.setHeader("Content-Length", Buffer.byteLength(bodyData));
            proxyReq.write(bodyData);
          }
        }
      },