java实现修改linux系统时间（centos）
公司项目要求linux系统时间不准确，在web页面可以进行修改，如下：
1 思路
时间插件：wdatepicker
html页面
<input type="text" id="dateupdate" name="dateupdate" class="form-control" onclick="WdatePicker({dateFmt:'MM-dd-yyyy HH:mm:ss',minDate:'%y-%M-%d %H:%m:%s'})">
<button class="btn-blue" onclick="submitupdatetime()">提交</button>
js代码
function submitupdatetime() {
var time = $("#dateupdate").val();
if (time!=""||time!=null){
$.ajax({
url:"${ctx!}/admin/system/updateTime.do",
type:"POST",
cache:false,
async:false,
data:{
"timevalue":time},
success:function (data) {
if (data=="1"){
alert("修改成功!");
window.location.reload();
} else{
alert("修改失败!");
window.location.reload();
}
},
error:function (jqXHR) {
console.log(jqXHR)
}
});
}
}
后台
@RequestMapping("/updateTime")
public@ResponseBody String updateTime(@RequestParam("timevalue")String timevalue){
String result="0";
if (StringUtils.isNotBlank(timevalue)){
String[] split = timevalue.split(" ");
if (split.length>0){
try {
SynSystemDateUtils.updateSysDateTime(split[0],split[1]);
result="1";
} catch (Exception e) {
e.printStackTrace();
}
}
}
return result;
}
-
修改系统时间工具类
package com.aio.util; import org.apache.commons.io.FileUtils; import java.io.*; import java.io.IOException; import java.util.Locale; import java.util.UUID; /** * @author:qiwentao * @creattime:2021-12-05 13:22 */ public class SynSystemDateUtils { public static void main(String[] args) { String date = "2017-11-11"; String time = "11:11:11" ; try { updateSysDateTime(date,time); } catch (Exception e) { e.printStackTrace(); } } /** * 修改系统时间 * yyyy-MM-dd HH:mm:ss */ public static void updateSysDateTime(String dataStr_,String timeStr_) throws Exception { try { String osName = System.getProperty("os.name"); // Window 系统 if (osName.matches("^(?i)Windows.*$")) { String cmd; // 格式：yyyy-MM-dd cmd = " cmd /c date " + dataStr_; Runtime.getRuntime().exec(cmd); // 格式 HH:mm:ss cmd = " cmd /c time " + timeStr_; String res = runAndResult(cmd); System.out.println("windows 时间修改" + res); } else if (osName.matches("^(?i)Linux.*$")) { // Linux 系统 格式：yyyy-MM-dd HH:mm:ss date -s "2017-11-11 11:11:11" FileWriter excutefw = new FileWriter("/usr/updateSysTime.sh"); BufferedWriter excutebw=new BufferedWriter(excutefw); //excutebw.write("date -s \"" + dataStr_ +" "+ timeStr_ +"\"\r\n"); excutebw.write("date -s \"" + dataStr_ +" "+ timeStr_ +"\"\n"); excutebw.close(); excutefw.close(); String cmd_date ="sh /usr/updateSysTime.sh"; String res = runAndResult(cmd_date); System.out.println("cmd :" + cmd_date + " date :" + dataStr_ +" time :" + timeStr_); System.out.println("linux 时间修改" + res); } else { System.out.println("操作系统无法识别"); } } catch (IOException e) { e.getMessage(); } } /** * 执行 脚本命令 关心结果 * @param cmd * @return */ public static String runAndResult(String cmd) throws Exception{ StringBuilder sb = new StringBuilder(); BufferedReader br = null; boolean execFlag = true; String uuid = UUID.randomUUID().toString().replace("-",""); String tempFileName = "./temp" + uuid +".sh"; try { String osName = System.getProperty("os.name").toUpperCase(Locale.ENGLISH); if (osName.matches("^(?i)LINUX.*$") || osName.contains("MAC")) { FileWriter excutefw = new FileWriter(tempFileName); BufferedWriter excutebw=new BufferedWriter(excutefw); excutebw.write(cmd + "\n"); excutebw.close(); excutefw.close(); String command ="bash " + tempFileName; Process p = Runtime.getRuntime().exec(command); p.waitFor(); br = new BufferedReader(new InputStreamReader(p.getInputStream())); String line; while ((line = br.readLine()) != null) { sb.append(System.lineSeparator()); sb.append(line); } br.close(); br = new BufferedReader(new InputStreamReader(p.getErrorStream())); while ((line = br.readLine()) != null) { sb.append(System.lineSeparator()); sb.append(line); if (line.length() > 0){ execFlag = false; } } br.close(); if (execFlag){ }else { throw new RuntimeException(sb.toString()); } }else { throw new RuntimeException("不支持的操作系统类型"); } } catch (Exception e) { throw e; }finally { if (br != null){ br.close(); } FileUtils.deleteQuietly(new File(tempFileName)); } return sb.toString(); } }
效果图：
在linux终端查看修改的时间
