我真的不了解2D数组...
我有这个1D数组，我想把它转换为2D，所以数字在一个维度，而描述在另一个维度。
这是我目前的数组：
String[] errorcodes = {
"1|Failed to set a UBC parameter",
"2|Failed to set a fair scheduler parameter",
"3|Generic system error",
"5|The running kernel is not an OpenVZ kernel (or some OpenVZ modules are not loaded)",
"6|Not enough system resources",
"7|ENV_CREATE ioctl failed",
"8|Command executed by vzctl exec returned non-zero exit code",
"9|Container is locked by another vzctl invocation",
"10|Global OpenVZ configuration file vz.conf(5) not found",
"11|A vzctl helper script file not found",
"12|Permission denied",
"13|Capability setting failed",
"14|Container configuration file ctid.conf(5) not found",
"15|Timeout on vzctl exec",
"16|Error during vzctl suspend",
"17|Error during vzctl resume",
"18|Error from setluid() syscall",
"20|Invalid command line parameter",
"21|Invalid value for command line parameter",
"22|Container root directory (VE_ROOT) not set",
"23|Container private directory (VE_PRIVATE) not set",
"24|Container template directory (TEMPLATE) not set",
"28|Not all required UBC parameters are set, unable to start container",
"29|OS template is not specified, unable to create container",
"31|Container not running",
"32|Container already running",
"33|Unable to stop container",
"34|Unable to add IP address to container",
"40|Container not mounted",
"41|Container already mounted",
"43|Container private area not found",
"44|Container private area already exists",
"46|Not enough disk space",
"47|Bad/broken container (/sbin/init or /bin/sh not found)",
"48|Unable to create a new container private area",
"49|Unable to create a new container root area",
"50|Unable to mount container",
"51|Unable to unmount container",
"52|Unable to delete a container",
"53|Container private area not exist",
"60|vzquota on failed",
"61|vzquota init failed",
"62|vzquota setlimit failed",
"63|Parameter DISKSPACE not set",
"64|Parameter DISKINODES not set",
"65|Error setting in-container disk quotas",
"66|vzquota off failed",
"67|ugid quota not initialized",
"71|Incorrect IP address format",
"74|Error changing password",
"78|IP address already in use",
"79|Container action script returned an error",
"82|Config file copying error",
"86|Error setting devices (--devices or --devnodes)",
"89|IP address not available",
"91|OS template not found",
"99|Ploop is not supported by either the running kernel or vzctl.",
"100|Unable to find container IP address",
"104|VE_NETDEV ioctl error", "105|Container start disabled",
"106|Unable to set iptables on a running container",
"107|Distribution-specific configuration file not found",
"109|Unable to apply a config",
"129|Unable to set meminfo parameter",
"130|Error setting veth interface",
"131|Error setting container name",
"133|Waiting for container start failed",
"139|Error saving container configuration file",
"148|Error setting container IO parameters (ioprio)",
"150|Ploop image file not found",
"151|Error creating ploop image",
"152|Error mounting ploop image",
"153|Error unmounting ploop image",
"154|Error resizing ploop image",
"155|Error converting container to ploop layout",
"156|Error creating ploop snapshot",
"157|Error merging ploop snapshot",
"158|Error deleting ploop snapshot",
"159|Error switching ploop snapshot",
"166|Error compacting ploop image",
"167|Error listing ploop snapsots", };
我希望能够在一行中完成，就像这样。
答案 0 :(得分：1)
为此你应该使用HashMap
答案 1 :(得分：0)
您可以根据现有的errorcodes
String[][] errorcodesArray = new String[errorcodes.length][2];
for (int i = 0; i < errorcodes.length; i++) {
StringTokenizer st = new StringTokenizer(
errorcodes[i], "|");
if (st.hasMoreTokens())
errorcodesArray[i][0] = st.nextToken();
if (st.hasMoreTokens())
errorcodesArray[i][1] = st.nextToken();
}
for (int i = 0; i < errorcodesArray.length; i++) {
System.out.println(Arrays
.toString(errorcodesArray[i]));
}
或您的代码单独执行
String[][] errorcodesArray = {
{ "1", "Failed to set a UBC parameter"},
{ "2", "Failed to set a fair scheduler parameter"},
{ "3", "Generic system error"},
{ "5", "The running kernel is not an OpenVZ kernel (or some OpenVZ modules are not loaded)"},
{ "6", "Not enough system resources"},
{ "7", "ENV_CREATE ioctl failed"},
{ "8", "Command executed by vzctl exec returned non-zero exit code"},
{ "9", "Container is locked by another vzctl invocation"},
{ "10", "Global OpenVZ configuration file vz.conf(5) not found"},
{ "11", "A vzctl helper script file not found"},
{ "12", "Permission denied"},
{ "13", "Capability setting failed"},
{ "14", "Container configuration file ctid.conf(5) not found"},
{ "15", "Timeout on vzctl exec"},
{ "16", "Error during vzctl suspend"},
{ "17", "Error during vzctl resume"},
{ "18", "Error from setluid() syscall"},
{ "20", "Invalid command line parameter"},
{ "21", "Invalid value for command line parameter"},
{ "22", "Container root directory (VE_ROOT) not set"},
{ "23", "Container private directory (VE_PRIVATE) not set"},
{ "24", "Container template directory (TEMPLATE) not set"},
{ "28", "Not all required UBC parameters are set, unable to start container"},
{ "29", "OS template is not specified, unable to create container"},
{ "31", "Container not running"},
{ "32", "Container already running"},
{ "33", "Unable to stop container"},
{ "34", "Unable to add IP address to container"},
{ "40", "Container not mounted"},
{ "41", "Container already mounted"},
{ "43", "Container private area not found"},
{ "44", "Container private area already exists"},
{ "46", "Not enough disk space"},
{ "47", "Bad/broken container (/sbin/init or /bin/sh not found)"},
{ "48", "Unable to create a new container private area"},
{ "49", "Unable to create a new container root area"},
{ "50", "Unable to mount container"},
{ "51", "Unable to unmount container"},
{ "52", "Unable to delete a container"},
{ "53", "Container private area not exist"},
{ "60", "vzquota on failed"},
{ "61", "vzquota init failed"},
{ "62", "vzquota setlimit failed"},
{ "63", "Parameter DISKSPACE not set"},
{ "64", "Parameter DISKINODES not set"},
{ "65", "Error setting in-container disk quotas"},
{ "66", "vzquota off failed"},
{ "67", "ugid quota not initialized"},
{ "71", "Incorrect IP address format"},
{ "74", "Error changing password"},
{ "78", "IP address already in use"},
{ "79", "Container action script returned an error"},
{ "82", "Config file copying error"},
{ "86", "Error setting devices (--devices or --devnodes)"},
{ "89", "IP address not available"},
{ "91", "OS template not found"},
{ "99", "Ploop is not supported by either the running kernel or vzctl."},
{ "100", "Unable to find container IP address"},
{ "104", "VE_NETDEV ioctl error"},
{ "105", "Container start disabled"},
{ "106", "Unable to set iptables on a running container"},
{ "107", "Distribution-specific configuration file not found"},
{ "109", "Unable to apply a config"},
{ "129", "Unable to set meminfo parameter"},
{ "130", "Error setting veth interface"},
{ "131", "Error setting container name"},
{ "133", "Waiting for container start failed"},
{ "139", "Error saving container configuration file"},
{ "148", "Error setting container IO parameters (ioprio)"},
{ "150", "Ploop image file not found"},
{ "151", "Error creating ploop image"},
{ "152", "Error mounting ploop image"},
{ "153", "Error unmounting ploop image"},
{ "154", "Error resizing ploop image"},
{ "155", "Error converting container to ploop layout"},
{ "156", "Error creating ploop snapshot"},
{ "157", "Error merging ploop snapshot"},
{ "158", "Error deleting ploop snapshot"},
{ "159", "Error switching ploop snapshot"},
{ "166", "Error compacting ploop image"},
{ "167", "Error listing ploop snapsots"}
};
生成阵列......
System.out.println(" {");
for (int i = 0; i < errorcodesArray.length; i++) {
System.out.print(" { \"");
System.out.print(errorcodesArray[i][0]);
System.out.print("\", \"");
System.out.print(errorcodesArray[i][1]);
System.out.print("\"}");
if (i + 1 < errorcodesArray.length) {
System.out.print(",");
}
System.out.println();
}
System.out.println(" };");
答案 2 :(得分：0)
我建议您使用 HashMap ，例如 HashMap＆lt;整数，字符串＆gt; 。关键是错误代码，值是错误消息。
这有助于您为给定的错误代码填充错误消息。如果使用String [] []，则对于给定的错误代码填充错误消息并不容易。
HashMap中==＆GT; http://docs.oracle.com/javase/6/docs/api/java/util/HashMap.html?is-external=true
如果需要2d数组类型的 String [] [] ，那么您可以尝试使用以下代码将1D转换为2D数组。
//2D string to be converted.
String[][] convertedArray = new String[errorcodes.length][];
for(int i=0, len = convertedArray.length;i<len;i++)
{
convertedArray[i] = errorcodes[i].split("\\|");
}
//Print the 2D array in console
System.out.println(Arrays.deepToString(convertedArray));
以示例数据为例，控制台中的输出如下：
[[1, Failed to set a UBC parameter], [2, Failed to set a fair scheduler parameter], [3, Generic system error], [5, The running kernel is not an OpenVZ kernel (or some OpenVZ modules are not loaded)], [6, Not enough system resources], [7, ENV_CREATE ioctl failed], [8, Command executed by vzctl exec returned non-zero exit code], [9, Container is locked by another vzctl invocation], [10, Global OpenVZ configuration file vz.conf(5) not found], [11, A vzctl helper script file not found], [12, Permission denied], [13, Capability setting failed], [14, Container configuration file ctid.conf(5) not found], [15, Timeout on vzctl exec], [16, Error during vzctl suspend], [17, Error during vzctl resume], [18, Error from setluid() syscall], [20, Invalid command line parameter], [21, Invalid value for command line parameter], [22, Container root directory (VE_ROOT) not set], [23, Container private directory (VE_PRIVATE) not set], [24, Container template directory (TEMPLATE) not set], [28, Not all required UBC parameters are set, unable to start container], [29, OS template is not specified, unable to create container], [31, Container not running], [32, Container already running], [33, Unable to stop container], [34, Unable to add IP address to container], [40, Container not mounted], [41, Container already mounted], [43, Container private area not found], [44, Container private area already exists], [46, Not enough disk space], [47, Bad/broken container (/sbin/init or /bin/sh not found)], [48, Unable to create a new container private area], [49, Unable to create a new container root area], [50, Unable to mount container], [51, Unable to unmount container], [52, Unable to delete a container], [53, Container private area not exist], [60, vzquota on failed], [61, vzquota init failed], [62, vzquota setlimit failed], [63, Parameter DISKSPACE not set], [64, Parameter DISKINODES not set], [65, Error setting in-container disk quotas], [66, vzquota off failed], [67, ugid quota not initialized], [71, Incorrect IP address format], [74, Error changing password], [78, IP address already in use], [79, Container action script returned an error], [82, Config file copying error], [86, Error setting devices (--devices or --devnodes)], [89, IP address not available], [91, OS template not found], [99, Ploop is not supported by either the running kernel or vzctl.], [100, Unable to find container IP address], [104, VE_NETDEV ioctl error], [105, Container start disabled], [106, Unable to set iptables on a running container], [107, Distribution-specific configuration file not found], [109, Unable to apply a config], [129, Unable to set meminfo parameter], [130, Error setting veth interface], [131, Error setting container name], [133, Waiting for container start failed], [139, Error saving container configuration file], [148, Error setting container IO parameters (ioprio)], [150, Ploop image file not found], [151, Error creating ploop image], [152, Error mounting ploop image], [153, Error unmounting ploop image], [154, Error resizing ploop image], [155, Error converting container to ploop layout], [156, Error creating ploop snapshot], [157, Error merging ploop snapshot], [158, Error deleting ploop snapshot], [159, Error switching ploop snapshot], [166, Error compacting ploop image], [167, Error listing ploop snapsots]]
答案 3 :(得分：0)
您可以直接从初始化创建2D数组，而不是一起创建1D数组，或者您可以将1D数组转换为2D数组（使用split命令并迭代1D数组）：
String String[][] errorCodes =
new String[errorcodes.length][errorcodes[0].split("|").length];
for (int i = 0; i < errorcodes.length; i++)
errorCodes[i] = errorcodes[i].split("|");
出于某种原因，这不起作用。它给出了奇怪的输出。我之前已经完成了这项工作，但它已经奏效了。所以这个想法就在那里。