react+spring boot开发设置

Question

我正在尝试在开发模式下设置react和spring boot，我有运行前端和后端的独立端口，即http://localhost:3000/api/hello和http://localhost:8080/api/hello。我喜欢在后台调用服务，并在前端显示结果，为此我在react应用程序的package.json文件中添加了"proxy"："http://localhost:8080“。但它不起作用。

请帮帮我怎么修？

package.json文件

{
  "name": "frontend",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "react": "^16.3.1",
    "react-dom": "^16.3.1",
    "react-scripts": "1.1.4"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  },
  "proxy": "http://localhost:8080",
}

我可以显示带有前端reactjs代码的后端弹簧启动代码

Answer 1

您不必定义代理端口。只需运行spring boot项目，然后从react应用程序发送请求

例如在React中：

        fetch("http://localhost:portNumber/login", {
        method: 'POST',
        headers: {'content-type': 'application/json'},
        body: JSON.stringify({
        email: this.state.emailAddress,
        password: this.state.password})
})
        .then(resopnse => {
    if(response.status === 200){
    }
        })

Spring boot：

@CrossOrigin("*")
@PostMapping("/login")
public userLogin(@RequestedBody modalName objectname){
//Service Call
}