用 express.json 做一个空的 post 请求

如果我尝试发出一个空请求，我不会以 json 格式发送数据，在标头应用程序中键入 json / json 以 html 的形式给出它，我必须知道如何解决它，因为它显示了路线和更多东西

我正在使用 app.use(express.json())

SyntaxError: Unexpected end of JSON input
    at JSON.parse (<anonymous>)
    at createStrictSyntaxError (D:\Programacion\VUEJS_NODEJS\backend\node_modules\body-parser\lib\types\json.js:160:10)
    at parse (D:\Programacion\VUEJS_NODEJS\backend\node_modules\body-parser\lib\types\json.js:83:15)
    at D:\Programacion\VUEJS_NODEJS\backend\node_modules\body-parser\lib\read.js:128:18
    at AsyncResource.runInAsyncScope (node:async_hooks:203:9)
    at invokeCallback (D:\Programacion\VUEJS_NODEJS\backend\node_modules\raw-body\index.js:231:16)
    at done (D:\Programacion\VUEJS_NODEJS\backend\node_modules\raw-body\index.js:220:7)
    at IncomingMessage.onEnd (D:\Programacion\VUEJS_NODEJS\backend\node_modules\raw-body\index.js:280:7)
    at IncomingMessage.emit (node:events:513:28)
    at endReadableNT (node:internal/streams/readable:1359:12)

如果我使用 if(Object.keys(req.body).length === 0)

TypeError: Cannot convert undefined or null to object
    at Function.keys (<anonymous>)
    at file:///D:/Programacion/VUEJS_NODEJS/backend/index.js:71:15
    at Layer.handle [as handle_request] (D:\Programacion\VUEJS_NODEJS\backend\node_modules\express\lib\router\layer.js:95:5)
    at trim_prefix (D:\Programacion\VUEJS_NODEJS\backend\node_modules\express\lib\router\index.js:328:13)
    at D:\Programacion\VUEJS_NODEJS\backend\node_modules\express\lib\router\index.js:286:9
    at Function.process_params (D:\Programacion\VUEJS_NODEJS\backend\node_modules\express\lib\router\index.js:346:12)
    at next (D:\Programacion\VUEJS_NODEJS\backend\node_modules\express\lib\router\index.js:280:10)
    at serveStatic (D:\Programacion\VUEJS_NODEJS\backend\node_modules\serve-static\index.js:75:16)
    at Layer.handle [as handle_request] (D:\Programacion\VUEJS_NODEJS\backend\node_modules\express\lib\router\layer.js:95:5)
    at trim_prefix (D:\Programacion\VUEJS_NODEJS\backend\node_modules\express\lib\router\index.js:328:13)

用express解决代码错误

如果您发送

application/json

content-type

SyntaxError: Unexpected end of JSON input

如果您不发送 JSON，则不要将

content-type

application/json

express.json()

或者，如果您真的希望它是

application/json