我正在尝试使用curl和python flask将文件上传到服务器.下面我有我如何实现它的代码.关于我做错了什么的任何想法.
curl -i -X PUT -F name=Test -F filedata=@SomeFile.pdf "http://localhost:5000/"
@app.route("/", methods=['POST','PUT'])
def hello():
file = request.files['Test']
if file and allowed_file(file.filename):
filename=secure_filename(file.filename)
print filename
return "Success"
以下是服务器发回的错误
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<title>400 Bad Request</title>
<h1>Bad Request</h1>
<p>The browser (or proxy) sent a request that this server could not understand.</p>
提前致谢.
我正在尝试使用node.js安装以下模块,但继续收到以下错误.你对我该做什么有什么建议吗？所以我使用的是Windows 7,并且还安装了.NET Framework 2.0 SDK.
npm install execSync
MSBUILD : error MSB3428: Could not load the Visual C++ component "VCBuild.exe".
To fix this, 1) install the .NET Framework 2.0 SDK,
2) install Microsoft Visual Studio 2005 or
3) add the location of the component to the system path if it is installed elsewhere.
我试图在我的macbook上配置hadoop 0.23.8并运行以下异常
org.apache.hadoop.hdfs.server.protocol.DisallowedDatanodeException: Datanode denied communication with namenode: 192.168.1.13:50010
at org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager.registerDatanode(DatanodeManager.java:549)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.registerDatanode(FSNamesystem.java:2548)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.registerDatanode(NameNodeRpcServer.java:784)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:394)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1571)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1567)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1262)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1565)
我的core-site.xml看起来像这样
<configuration>
<property>
<name>dfs.federation.nameservices</name>
<value>ns1</value>
</property>
<property>
<name>dfs.namenode.rpc-address.ns1</name>
<value>192.168.1.13:54310</value>
</property>
<property>
<name>dfs.namenode.http-address.ns1</name>
<value>192.168.1.13:50070</value>
</property>
<property>
<name>dfs.namenode.secondary.http-address.ns1</name>
<value>192.168.1.13:50090</value>
</property>
</configuration>
关于我可能做错的任何想法？
当我使用套接字编程传输大文件时,接收的文件不完整,即它是一个mp3文件,当我播放时听起来很奇怪.代码是:
服务器端:
File myFile = new File("abc.mp3");
{
Socket sock = servsock.accept();
int packetsize=1024;
double nosofpackets=Math.ceil(((int) myFile.length())/packetsize);
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(myFile));
for(double i=0;i<nosofpackets+1;i++) {
byte[] mybytearray = new byte[packetsize];
bis.read(mybytearray, 0, mybytearray.length);
System.out.println("Packet:"+(i+1));
OutputStream os = sock.getOutputStream();
os.write(mybytearray, 0,mybytearray.length);
os.flush();
}
}
客户端:
int packetsize=1024;
FileOutputStream fos = new FileOutputStream("zz.mp3");
BufferedOutputStream bos = new BufferedOutputStream(fos);
double nosofpackets=Math.ceil(((int) (new File("abc.mp3")).length())/packetsize);
for(double i=0;i<nosofpackets+1;i++)
{
InputStream is = sock.getInputStream();
byte[] mybytearray = new byte[packetsize];
int bytesRead = is.read(mybytearray, 0,mybytearray.length );
System.out.println("Packet:"+(i+1)); …我想运行一个简单的节点样本访问mysql数据库,并正在以下错误,错误:ER_ACCESS_DENIED_ERROR:拒绝访问用户root'@'ubuntu.local'(使用密码:YES)
var mysql = require('mysql');
var connection = mysql.createConnection({
host : '192.168.0.12',
user : 'root',
password : 'password',
database : 'app'
});
connection.connect();
connection.query('SELECT * from users', function(err, rows, fields) {
if (err) throw err;
console.log('The solution is: ', rows[0]);
});
connection.end();
以上是使用node.js访问mysql的代码.有关我可能做错的建议,提前感谢.
我想在3台不同的机器上安装socket.io服务器。我有一个负载平衡器设置，用于在不同服务器之间分配请求，但是如何将在socket.io中的连接函数中获得的套接字对象分配给不同服务器？我知道我们可以使用RedisStore pub / sub来发布和记录redis事件，但是假设我有一个连接到计算机1的客户端A，并且有一个连接到计算机3的客户端B。给客户B的消息？还是在socket.io中还有其他架构可以用来实现这一目标？
我正在尝试在我存储在Amazon s3上的存储桶中的文本文件上运行Map reduce WordCount作业.我已经为map reduce框架设置了所有必需的身份验证以与Amazon通信,但我继续运行此错误.知道为什么会这样吗？
13/01/20 13:22:15 ERROR security.UserGroupInformation:
PriviledgedActionException as:root
cause:org.apache.hadoop.mapred.InvalidInputException: Input path does
not exist: s3://name-bucket/test.txt
Exception in thread "main"
org.apache.hadoop.mapred.InvalidInputException: Input path does not
exist: s3://name-bucket/test.txt
at org.apache.hadoop.mapred.FileInputFormat.listStatus(FileInputFormat.java:197)
at org.apache.hadoop.mapred.FileInputFormat.getSplits(FileInputFormat.java:208)
at org.apache.hadoop.mapred.JobClient.writeOldSplits(JobClient.java:989)
at org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:981)
at org.apache.hadoop.mapred.JobClient.access$600(JobClient.java:174)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:897)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:850)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:416)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:850)
at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:824)
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1261)
at org.myorg.WordCount.main(WordCount.java:55)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
我的enter code hereandroid布局xml文件中有<.ImageView> s(图标),包含在a <ScrollView>.
例如.
<.ScrollView><br>
<.LinearLayout><br>
<.ImageView> ...<./ImageView><br>
<./LinearLayout><br>
<./ScrollView>
对于这种布局,我想附加一个固定的页脚.基本上屏幕底部有一个小标签,即使我一直向下滚动或一直向上滚动,它仍会停留.
我想在文件中存储一个字符串，文件名是 whoami 命令的输出和 filename="date +'%D-%H-%M'" 的输出的串联。目前我正在做类似的事情
user=$whoami
echo "Sample String" > $user
但它不起作用。关于我做错了什么有什么建议吗？另外，正如我上面提到的，我想将 $user 和 $filename 的输出连接起来作为文件的最终名称。提前致谢。