我正在构建动态sqlplus命令，并从Java中执行该命令，但它并没有按预期工作。而当在命令提示符下运行时，同样的命令执行得很好。
执行直接命令时的输出(预期(：
BEGIN
*
ERROR at line 1:
ORA-20004: Data is not ready, please check control-M v8 jobs
ORA-06512: at "GLOBAL_OWNER.PKG_COMMON_UTILS", line 282
ORA-06512: at line 2
执行Java类时的输出：
SQL*Plus: Release 12.1.0.2.0 Production
Copyright (c) 1982, 2014, Oracle. All rights reserved.
Use SQL*Plus to execute SQL, PL/SQL and SQL*Plus statements.
Usage 1: sqlplus -H | -V
-H Displays the SQL*Plus version and the
usage help.
-V Displays the SQL*Plus version.
Usage 2: sqlplus [ [<option>] [{logon | /nolog}] [<start>] ]
<option> is: [-C <version>] [-L] [-M "<options>"] [-NOLOGINTIME] [-R <level>]
[-S]
-C <version> Sets the compatibility of affected commands to the
version specified by <version>. The version has
the form "x.y[.z]". For example, -C 10.2.0
-L Attempts to log on just once, instead of
reprompting on error.
-M "<options>" Sets automatic HTML markup of output. The options
have the form:
HTML [ON|OFF] [HEAD text] [BODY text] [TABLE text]
[ENTMAP {ON|OFF}] [SPOOL {ON|OFF}] [PRE[FORMAT] {ON|OFF}]
-NOLOGINTIME Don't display Last Successful Login Time.
-R <level> Sets restricted mode to disable SQL*Plus commands
that interact with the file system. The level can
be 1, 2 or 3. The most restrictive is -R 3 which
disables all user commands interacting with the
file system.
-S Sets silent mode which suppresses the display of
the SQL*Plus banner, prompts, and echoing of
commands.
<logon> is: {<username>[/<password>][@<connect_identifier>] | / }
[AS {SYSDBA | SYSOPER | SYSASM | SYSBACKUP | SYSDG | SYSKM}] [EDITION=value]
Specifies the database account username, password and connect
identifier for the database connection. Without a connect
identifier, SQL*Plus connects to the default database.
The AS SYSDBA, AS SYSOPER, AS SYSASM, AS SYSBACKUP, AS SYSDG,
and AS SYSKM options are database administration privileges.
<connect_identifier> can be in the form of Net Service Name
or Easy Connect.
@[<net_service_name> | [//]Host[:Port]/<service_name>]
<net_service_name> is a simple name for a service that resolves
to a connect descriptor.
Example: Connect to database using Net Service Name and the
database net service name is ORCL.
sqlplus myusername/mypassword@ORCL
Host specifies the host name or IP address of the database
server computer.
Port specifies the listening port on the database server.
<service_name> specifies the service name of the database you
want to access.
Example: Connect to database using Easy Connect and the
Service name is ORCL.
sqlplus myusername/mypassword@Host/ORCL
The /NOLOG option starts SQL*Plus without connecting to a
database.
The EDITION specifies the value for Session Edition.
<start> is: @<URL>|<filename>[.<ext>] [<parameter> ...]
Runs the specified SQL*Plus script from a web server (URL) or the
local file system (filename.ext) with specified parameters that
will be assigned to substitution variables in the script.
When SQL*Plus starts, and after CONNECT commands, the site profile
(e.g. $ORACLE_HOME/sqlplus/admin/glogin.sql) and the user profile
(e.g. login.sql in the working directory) are run. The files may
contain SQL*Plus commands.
用于运行sqlplus命令的Java类。
public class RunSqlPlus {
public static void main(String[] args){
try {
String cmd = " sqlplus -s -LOGON <user_name>/<password>@"(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(Host= host1.com)(Port=1725))(ADDRESS=(PROTOCOL=TCP)(Host= host2.com)(Port=1725))(LOAD_BALANCE = ON)(FAILOVER = ON) (CONNECT_DATA = (SERVER = DEDICATED)(SERVICE_NAME=service.com)))" @Load.sql";
Process process;
process = Runtime.getRuntime()
.exec(cmd);
StreamGobbler streamGobbler =
new StreamGobbler(process.getInputStream(), System.out::println);
Future<?> future = Executors.newSingleThreadExecutor().submit(streamGobbler);
int exitCode = process.waitFor();
assert exitCode == 0;
future.get();
}
catch(IOException |InterruptedException | ExecutionException e)
{
e.printStackTrace();
}
}
private static class StreamGobbler implements Runnable {
private InputStream inputStream;
private Consumer<String> consumer;
public StreamGobbler(InputStream inputStream, Consumer<String> consumer) {
this.inputStream = inputStream;
this.consumer = consumer;
}
@Override
public void run() {
new BufferedReader(new InputStreamReader(inputStream)).lines()
.forEach(consumer);
}
}
}
Runtime.exec(String)在JDK18中被弃用，因为它并不总是擅长用空格/引号分割命令。正确地分解命令行参数，这样就不会有歧义：
String[] cmd = new String[] {
"sqlplus","-s", "-LOGON",
"<user_name>/<password>@"(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(Host= host1.com)(Port=1725))(ADDRESS=(PROTOCOL=TCP)(Host= host2.com)(Port=1725))(LOAD_BALANCE = ON)(FAILOVER = ON) (CONNECT_DATA = (SERVER = DEDICATED)(SERVICE_NAME=service.com)))""
"@Load.sql"
};
如果用ProcessBuilder替换Runtime.exec(cmd)，您可以更好地控制子进程，因为您可以将stdout/stderr捕获到文件，或者将stderr重定向到stdout，以避免读取两个流。