Question

以下是我用来上传文件的代码：

java.io.IOException: Permission denied
    at java.io.UnixFileSystem.createFileExclusively(Native Method)
    at java.io.File.createNewFile(File.java:1012)

Answer 1

使用命令

更改目录的权限

// Note: I noticed that you imported Component from the wrong place. That might also be contributing to your issue so I fixed it here.
import React, { Component } from 'react';
import Relay, { 
  Route,
  RootContainer,
  DefaultNetworkLayer
} from 'react-relay'

// Relay.injectNetworkLayer(new DefaultNetworkLayer('http://localhost:3000/graphiql'))

class UserRoute extends Route {
  static paramDefinitions = {
    userID: { required: true }
  }
  static queries = {
    user: () => Relay.QL`
      query { 
        user(id: $userID)
      }
    `
  }
  static routeName = 'UserRoute'
}

class UserInfo extends Component {
  render () {
    const user = this.props.user
    return (
      <Text>email: {user.email}</Text>
    )
  }
}

UserInfo = Relay.createContainer(UserInfo, {
  fragments: {
    user: () => Relay.QL`
      fragment on User {
        id,
        email
      }
    `
  }
})


class RelayApp extends Component {
  render () {
    return (
      <View style={styles.container}>
        <Text style={styles.welcome}>
          Welcome to React Native!
        </Text>
        <Text style={styles.instructions}>
          To get started, edit index.ios.js
        </Text>
        <Text style={styles.instructions}>
          Press Cmd+R to reload,{'\n'}
          Cmd+D or shake for dev menu
        </Text>
        <RootContainer
          Component={UserInfo}
          route={new UserRoute({userID: '1'})}
          renderFetched={(data) => <UserInfo {...this.props} {...data} />}
        />
      </View>
    )
  }
}

如果您还想更改子目录的权限

否则

chmod -R 777 <path>

Answer 2

您需要为文件创建的路径设置正确的权限。您只需为该文件夹设置777文件权限，但这不是正确的方法。首先，你必须检查运行用户的程序＆amp;根据该用户，您必须为该目录设置正确的权限。

Answer 3

您的文件无权打开。你可以通过这样做来改变它。

chmod +rwx filename

无法在Ubuntu上传文件

3 个答案: