我已将 "proxy": "http://localhost:8080" 添加到我的 package.json 文件中,以便它将 POST 定向到 8080,但它显示 AddBook.js:34 POST http://localhost:3000/api/book 404 (Not Found)
为什么要发送到 3000?
{
"name": "appone-fe",
"version": "0.1.0",
"private": true,
"dependencies": {
"@material-ui/core": "^4.11.2",
"@material-ui/icons": "^4.11.2",
"@testing-library/jest-dom": "^5.11.4",
"@testing-library/react": "^11.1.0",
"@testing-library/user-event": "^12.1.10",
"react": "^17.0.1",
"react-dom": "^17.0.1",
"react-scripts": "4.0.1",
"web-vitals": "^0.2.4"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"proxy": "http://localhost:8080",
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}
这是我的 handlesubmit 函数,我也试过只发布到“/book”
const handleSubmit = (event) => {
event.preventDefault()
fetch("/api/book", {
method: "POST",
headers: {"Access-Control-Allow-Origin": "*"},
body: {
...state
}
}).then((a) => {
alert(`status code ===> ${a.status}`)
}).catch(error => alert(error))
}