I'm trying import a mysql dump created with mysqldump.exe file using java as well. No problems in creating the dump file but the problem is when I try to import it it always fails.
我正在尝试使用java导入使用mysqldump.exe文件创建的mysql转储。创建转储文件没有问题,但问题是当我尝试导入它时总是失败。
Here is my method code:
这是我的方法代码:
public boolean restoreDatabase(String path, String mySqlPath)
{
List<String> args = new ArrayList<String>();
mySqlPath = "C:/wamp/bin/mysql/mysql5.5.24/bin/mysql.exe";
args.add(mySqlPath);
// Comands
args.add("-u ");
args.add("root");
args.add("--password=123");
args.add("testingimport");
args.add("<");
path = "C:/Users/Kasper/Documents/testingimport.sql";
args.add(path);
try{
ProcessBuilder pb = new ProcessBuilder(args);
pb.redirectError();
Process p = pb.start();
InputStream is = p.getInputStream();
int in = -1;
while((in = is.read()) != -1)
{
System.out.print(""+(char) in);
}
int proccessCompleted = p.waitFor();
if(proccessCompleted == 0)
{
System.out.println("Dump done!");
return true;
}
else
{
System.out.println("Error doing dump!");
return false;
}
}
catch(IOException | InterruptedException ex)
{
System.out.println("Exception exportDB -> " + ex.getMessage() + "|" + ex.getLocalizedMessage());
}
return false;
}
Here is the full output code:
这是完整的输出代码:
Args: [C:\wamp\bin\mysql\mysql5.5.24\bin\mysql.exe, -u , root, --password=123, testingimport, <, C:/Users/Kasper/Documents/testingimport.sql]
C:\wamp\bin\mysql\mysql5.5.24\bin\mysql.exe Ver 14.14 Distrib 5.5.24, for Win64 (x86)
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Usage: C:\wamp\bin\mysql\mysql5.5.24\bin\mysql.exe [OPTIONS] [database]
-?, --help Display this help and exit.
-I, --help Synonym for -?
--auto-rehash Enable automatic rehashing. One doesn't need to use
'rehash' to get table and field completion, but startup
and reconnecting may take a longer time. Disable with
--disable-auto-rehash.
(Defaults to on; use --skip-auto-rehash to disable.)
-A, --no-auto-rehash
No automatic rehashing. One has to use 'rehash' to get
table and field completion. This gives a quicker start of
mysql and disables rehashing on reconnect.
--auto-vertical-output
Automatically switch to vertical output mode if the
result is wider than the terminal width.
-B, --batch Don't use history file. Disable interactive behavior.
(Enables --silent.)
--character-sets-dir=name
Directory for character set files.
--column-type-info Display column type information.
-c, --comments Preserve comments. Send comments to the server. The
default is --skip-comments (discard comments), enable
with --comments.
-C, --compress Use compression in server/client protocol.
-#, --debug[=#] This is a non-debug version. Catch this and exit.
--debug-check Check memory and open file usage at exit.
-T, --debug-info Print some debug info at exit.
-D, --database=name Database to use.
--default-character-set=name
Set the default character set.
--delimiter=name Delimiter to be used.
-e, --execute=name Execute command and quit. (Disables --force and history
file.)
-E, --vertical Print the output of a query (rows) vertically.
-f, --force Continue even if we get an SQL error.
-G, --named-commands
Enable named commands. Named commands mean this program's
internal commands; see mysql> help . When enabled, the
named commands can be used from any line of the query,
otherwise only from the first line, before an enter.
Disable with --disable-named-commands. This option is
disabled by default.
-i, --ignore-spaces Ignore space after function names.
--init-command=name SQL Command to execute when connecting to MySQL server.
Will automatically be re-executed when reconnecting.
--local-infile Enable/disable LOAD DATA LOCAL INFILE.
-b, --no-beep Turn off beep on error.
-h, --host=name Connect to host.
-H, --html Produce HTML output.
-X, --xml Produce XML output.
--line-numbers Write line numbers for errors.
(Defaults to on; use --skip-line-numbers to disable.)
-L, --skip-line-numbers
Don't write line number for errors.
-n, --unbuffered Flush buffer after each query.
--column-names Write column names in results.
(Defaults to on; use --skip-column-names to disable.)
-N, --skip-column-names
Don't write column names in results.
--sigint-ignore Ignore SIGINT (CTRL-C).
-o, --one-database Ignore statements except those that occur while the
default database is the one named at the command line.
-p, --password[=name]
Password to use when connecting to server. If password is
not given it's asked from the tty.
-W, --pipe Use named pipes to connect to server.
-P, --port=# Port number to use for connection or 0 for default to, in
order of preference, my.cnf, $MYSQL_TCP_PORT,
/etc/services, built-in default (3306).
--prompt=name Set the mysql prompt to this value.
--protocol=name The protocol to use for connection (tcp, socket, pipe,
memory).
-q, --quick Don't cache result, print it row by row. This may slow
down the server if the output is suspended. Doesn't use
history file.
-r, --raw Write fields without conversion. Used with --batch.
--reconnect Reconnect if the connection is lost. Disable with
--disable-reconnect. This option is enabled by default.
(Defaults to on; use --skip-reconnect to disable.)
-s, --silent Be more silent. Print results with a tab as separator,
each row on new line.
--shared-memory-base-name=name
Base name of shared memory.
-S, --socket=name The socket file to use for connection.
--ssl Enable SSL for connection (automatically enabled with
other flags).
--ssl-ca=name CA file in PEM format (check OpenSSL docs, implies
--ssl).
--ssl-capath=name CA directory (check OpenSSL docs, implies --ssl).
--ssl-cert=name X509 cert in PEM format (implies --ssl).
--ssl-cipher=name SSL cipher to use (implies --ssl).
--ssl-key=name X509 key in PEM format (implies --ssl).
--ssl-verify-server-cert
Verify server's "Common Name" in its cert against
hostname used when connecting. This option is disabled by
default.
-t, --table Output in table format.
--tee=name Append everything into outfile. See interactive help (\h)
also. Does not work in batch mode. Disable with
--disable-tee. This option is disabled by default.
-u, --user=name User for login if not current user.
-U, --safe-updates Only allow UPDATE and DELETE that uses keys.
-U, --i-am-a-dummy Synonym for option --safe-updates, -U.
-v, --verbose Write more. (-v -v -v gives the table output format).
-V, --version Output version information and exit.
-w, --wait Wait and retry if connection is down.
--connect-timeout=# Number of seconds before connection timeout.
--max-allowed-packet=#
The maximum packet length to send to or receive from
server.
--net-buffer-length=#
The buffer size for TCP/IP and socket communication.
--select-limit=# Automatic limit for SELECT when using --safe-updates.
--max-join-size=# Automatic limit for rows in a join when using
--safe-updates.
--secure-auth Refuse client connecting to server if it uses old
(pre-4.1.1) protocol.
--server-arg=name Send embedded server this as a parameter.
--show-warnings Show warnings after every statement.
--plugin-dir=name Directory for client-side plugins.
--default-auth=name Default authentication client-side plugin to use.
Default options are read from the following files in the given order:
C:\Windows\my.ini C:\Windows\my.cnf C:\my.ini C:\my.cnf C:\wamp\bin\mysql\mysql5.5.24\my.ini C:\wamp\bin\mysql\mysql5.5.24\my.cnf
The following groups are read: mysql client
The following options may be given as the first argument:
--print-defaults Print the program argument list and exit.
--no-defaults Don't read default options from any option file.
--defaults-file=# Only read default options from the given file #.
--defaults-extra-file=# Read this file after the global files are read.
Variables (--variable-name=value)
and boolean options {FALSE|TRUE} Value (after reading options)
--------------------------------- ----------------------------------------
auto-rehash FALSE
auto-vertical-output FALSE
character-sets-dir (No default value)
column-type-info FALSE
comments FALSE
compress FALSE
debug-check FALSE
debug-info FALSE
database (No default value)
default-character-set auto
delimiter ;
vertical FALSE
force FALSE
named-commands FALSE
ignore-spaces FALSE
init-command (No default value)
local-infile FALSE
no-beep FALSE
host (No default value)
html FALSE
xml FALSE
line-numbers TRUE
unbuffered FALSE
column-names TRUE
sigint-ignore FALSE
port 3306
prompt mysql>
quick FALSE
raw FALSE
reconnect FALSE
shared-memory-base-name (No default value)
socket /tmp/mysql.sock
ssl FALSE
ssl-ca (No default value)
ssl-capath (No default value)
ssl-cert (No default value)
ssl-cipher (No default value)
ssl-key (No default value)
ssl-verify-server-cert FALSE
table FALSE
user
safe-updates FALSE
i-am-a-dummy FALSE
connect-timeout 0
max-allowed-packet 16777216
net-buffer-length 16384
select-limit 1000
max-join-size 1000000
secure-auth FALSE
show-warnings FALSE
plugin-dir (No default value)
default-auth (No default value)
Error doing dump!
Can anyone spot where is the problem? I've spent coutless hours trying to figure out the problem. The command works perfectly on the windows command line but when I move it to the Java code it does not work and this is killing me... I'm using Windows 7 and Java JDBC, if this helps.
谁能发现问题出在哪里?我花了无数个小时试图找出问题所在。该命令在Windows命令行上完美运行,但是当我将它移动到Java代码时它不起作用,这就是杀了我......我正在使用Windows 7和Java JDBC,如果这有帮助的话。
EDIT: Code according suggestion from mrhobo
编辑:代码根据mrhobo的建议
public boolean restoreDatabase(String path, String mySqlPath) throws FileNotFoundException, IOException, InterruptedException
{
List<String> args = new ArrayList<>();
mySqlPath = "C:/wamp/bin/mysql/mysql5.5.24/bin/mysql.exe";
args.add(mySqlPath);
// Comands
args.add("-u");
args.add("root");
args.add("--password=123");
args.add("testingimport");
System.out.println("Args: "+args.toString());
try{
ProcessBuilder pb = new ProcessBuilder(args);
pb.redirectError();
Process p = pb.start();
path = "C:/Users/Kasper/Documents/testingimport.sql";
InputStream fileInputStream = new FileInputStream(new File(path));
byte[] b = new byte[4096];
while(fileInputStream.read(b) != -1) {
p.getOutputStream().write(b);
}
p.getOutputStream().close(); // don't forget to close!
InputStream is = p.getInputStream();
int in = -1;
while((in = is.read()) != -1)
{
System.out.print(""+(char) in);
}
int proccessCompleted = p.waitFor();
if(proccessCompleted == 0)
{
System.out.println("Dump done!");
return true;
}
else
{
System.out.println("Error doing dump!");
return false;
}
}
catch(IOException | InterruptedException ex)
{
System.out.println("Exception exportDB -> " + ex.getMessage() + "|" + ex.getLocalizedMessage());
}
return false;
}
And this is the output:
这是输出:
Args: [C:/wamp/bin/mysql/mysql5.5.24/bin/mysql.exe, -u, root, --password=123, testingimport]
Error doing dump!
1 个解决方案
#1
1
One reason why this code certainly won't work is because of this:
这段代码肯定不起作用的一个原因是因为:
args.add("<");
path = "C:/Users/Kasper/Documents/testingimport.sql";
args.add(path);
The Windows command line interpreter understand the < character as a special character that indicates that the contents of a file need to be written to stdin. It is not part of the process startup, but part of the command line interpreter. Starting a process programmatically you need to create your own control of the input, output and error streams. This is the way operating systems work (see win32 CreateProcess). In Java a process gets its stdin via the processes' outputstream. So in order to get this to work remove the lines above and add this after the pb.start():
Windows命令行解释器将 <字符理解为一个特殊字符,指示需要将文件的内容写入stdin。它不是流程启动的一部分,而是命令行解释器的一部分。以编程方式启动进程需要创建自己的输入,输出和错误流控制。这是操作系统工作的方式(参见win32 createprocess)。在java中,进程通过进程的输出流获取其stdin。所以为了让它工作,删除上面的行,并在pb.start()之后添加:< p>
path = "C:/Users/Kasper/Documents/testingimport.sql";
InputStream fileInputStream = new FileInputStream(new File(path));
byte[] b = new byte[4096];
while(fileInputStream.read(b) != -1) {
p.getOutputStream().write(b);
}
process.getOutputStream().close(); // don't forget to close!
#1
1
One reason why this code certainly won't work is because of this:
这段代码肯定不起作用的一个原因是因为:
args.add("<");
path = "C:/Users/Kasper/Documents/testingimport.sql";
args.add(path);
The Windows command line interpreter understand the < character as a special character that indicates that the contents of a file need to be written to stdin. It is not part of the process startup, but part of the command line interpreter. Starting a process programmatically you need to create your own control of the input, output and error streams. This is the way operating systems work (see win32 CreateProcess). In Java a process gets its stdin via the processes' outputstream. So in order to get this to work remove the lines above and add this after the pb.start():
Windows命令行解释器将 <字符理解为一个特殊字符,指示需要将文件的内容写入stdin。它不是流程启动的一部分,而是命令行解释器的一部分。以编程方式启动进程需要创建自己的输入,输出和错误流控制。这是操作系统工作的方式(参见win32 createprocess)。在java中,进程通过进程的输出流获取其stdin。所以为了让它工作,删除上面的行,并在pb.start()之后添加:< p>
path = "C:/Users/Kasper/Documents/testingimport.sql";
InputStream fileInputStream = new FileInputStream(new File(path));
byte[] b = new byte[4096];
while(fileInputStream.read(b) != -1) {
p.getOutputStream().write(b);
}
process.getOutputStream().close(); // don't forget to close!