使用java throw db备份PostgreSQL数据库不存在错误

Question

我可以使用此

成功备份和恢复cmd

pg_dump -h localhost -p 5433 --username postgres --no-password -f C:\tmp\test.sql mydb

但是当我尝试通过Java运行相同的东西时，我得到了这个输出：

            String[] cmdDump = {
            "C:\\Program Files\\PostgreSQL\\9.3\\bin\\pg_dump.exe",
            "--host", "localhost",
            "--port", "5432",
            "--username", "test",
            "--no-password",
            "--verbose",
            "--file", "C:\\tmp\\test.sql",
            "mydb"
    };
    Runtime rt = Runtime.getRuntime();
    Process p;
    p = rt.exec(cmdDump);

    BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
    BufferedReader bufErr = new BufferedReader(new InputStreamReader(p.getErrorStream()));

    String ll;
    p.waitFor();
    int processComplete = p.exitValue();

    if (processComplete == 0) 
    {
        while ((ll = br.readLine()) != null) {
            System.out.println(ll);
        } 
        System.out.println("Backup created successfully");
    } 
    else 
    {
        while ((ll = bufErr.readLine()) != null) {
            System.out.println(ll);
        } 
        System.out.println("Could not create the backup");

    }

输出：

pg_dump: [archiver (db)] connection to database "mydb" failed: FATAL:  database "mydb" does not exist
Could not create the backup

不确定为什么从Eclipse中看不到可从cmd访问的数据库。 我的pgpass.conf文件已为我的登录用户正确配置。