我想执行此命令
D:/Projects/GDAL/ogr2ogr.exe -f "MapInfo File" D:/Projects/GDAL/r/output_test.tab PG:"host=localhost user=postgres password=123456 dbname=postgis" -sql "SELECT * from filedata WHERE num=1"
我试过了:
Process process = Runtime.getRuntime().exec(new String[]{"cmd.exe", "D:/Projects/GDAL/ogr2ogr.exe -f \"MapInfo File\" D:/Projects/GDAL/r/output_test.tab PG:\"host=localhost user=postgres password=123456 dbname=postgis\" -sql \"SELECT * from filedata WHERE num=1\""});
我没有错误,但什么也没发生。 我的错误在哪里?
答案 0 :(得分:4)
阅读本文:http://www.javaworld.com/jw-12-2000/jw-1229-traps.html并逐步完成每个建议。
Process API因陷阱而臭名昭着。
答案 1 :(得分:1)
你应该添加'/ C':
Process process = Runtime.getRuntime().exec(new String[]{"cmd.exe", "/c", "D:/Projects/GDAL/ogr2ogr.exe -f \"MapInfo File\" D:/Projects/GDAL/r/output_test.tab PG:\"host=localhost user=postgres password=123456 dbname=postgis\" -sql \"SELECT * from filedata WHERE num=1\""})
答案 2 :(得分:0)
尝试检查您的返回值:
String command = ""; // Your command
Process installproc = installcommand.execute();
StringBuilder out = new StringBuilder();
StringBuilder err = new StringBuilder();
installproc.waitForProcessOutput(out, err);
if (out.length() > 0) System.out.println("out:\n$out".toString());
if (err.length() > 0) System.out.println("err:\n$err".toString());
if(installproc.exitValue() != 0) {
throw new Exception("");
}
这只是示例代码我没有以任何方式测试它。
这应该给出一些关于错误是什么的提示。