java实现spring boot项目启动时,重启Windows进程
一、方法总述
前5个实现了在spring boot在Windows启动服务时候,杀死相应的进程的;
第6个组成了启动相应的进程的方式。
二、SpringBoot项目启动时自动执行指定方法
在SpringBoot中,有两种接口方式实现启动执行,分别是ApplicationRunner和CommandLineRunner,除了可接受参数不同,其他的大同小异,这里选择随机选择一种,因为不需要接收参数,所以无所谓哪一种;
@Component
@Order(value = 1)
public class start implements ApplicationRunner {
private static Logger logger = LoggerFactory.getLogger(StartService.class);
@Override
public void run(ApplicationArguments args) throws Exception {
logger.info("spring boot项目启动成功");
}
}
三、查看进程是否存在的方法
根据传入的course进程名,进行判断,如果存在的话,返回true,不存在返回false,供后面kill进程使用;
/**
* 查看进程是否存活
*
* @param course 进程的名称
* @return
* @throws IOException
*/
public boolean isLive(String course) throws IOException {
BufferedReader bufferedReader = null;
try {
Process proc = Runtime.getRuntime().exec("tasklist -fi " + '"' + "imagename eq " + course + '"');
// 将获取到的进程打印出来
bufferedReader = new BufferedReader(new InputStreamReader(proc.getInputStream(), "UTF-8"));
String line = null;
while ((line = bufferedReader.readLine()) != null) {
// 如果存在,则返回true
if (line.contains(course)) {
return true;
}
}
return false;
} catch (Exception ex) {
return false;
} finally {
// 关闭资源
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (Exception ex) {
}
}
}
}
四、杀死Windows进程的方法
根据传入的进程的名称course,去杀死相应的进程;
/**
* 杀死进程
* @param course
* @return
* @throws IOException
*/
public static String killProc(String course) throws IOException {
// 判断进程是否为空
if (StringUtils.isNotBlank(course)) {
course = "taskkill /F /IM " + course;
}
Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec("cmd /c " + course);
// 将获取到的进程打印出来
BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream(), "UTF-8"));
String line = null;
StringBuilder build = new StringBuilder();
while ((line = br.readLine()) != null) {
build.append(line);
}
// 返回关闭的进程
return build.toString();
}
五、完整代码
public class start implements ApplicationRunner {
/**
* 关闭系统中存在的wps.exe进程
*/
@Override
public void run(ApplicationArguments applicationArguments) throws Exception {
String course = "wps.exe";
try {
//查看进程是否存活
boolean isLive = isLive(course);
if (isLive) {
// 存在,则杀死该进程
killProc(course);
}
} catch (Exception e) {
//杀死进程失败
e.printStackTrace();
}
}
/**
* 查看进程是否存活
*
* @param course 进程的名称
* @return
* @throws IOException
*/
public boolean isLive(String course) throws IOException {
BufferedReader bufferedReader = null;
try {
Process proc = Runtime.getRuntime().exec("tasklist -fi " + '"' + "imagename eq " + course + '"');
// 将获取到的进程打印出来
bufferedReader = new BufferedReader(new InputStreamReader(proc.getInputStream(), "UTF-8"));
String line = null;
while ((line = bufferedReader.readLine()) != null) {
// 如果存在,则返回true
if (line.contains(course)) {
return true;
}
}
return false;
} catch (Exception ex) {
return false;
} finally {
// 关闭资源
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (Exception ex) {
}
}
}
}
/**
* 杀死进程
* @param course
* @return
* @throws IOException
*/
public static String killProc(String course) throws IOException {
// 判断进程是否为空
if (StringUtils.isNotBlank(course)) {
course = "taskkill /F /IM " + course;
}
Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec("cmd /c " + course);
// 将获取到的进程打印出来
BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream(), "UTF-8"));
String line = null;
StringBuilder build = new StringBuilder();
while ((line = br.readLine()) != null) {
build.append(line);
}
// 返回关闭的进程
return build.toString();
}
}
六、实现项目启动重启进程
如果想要实现在项目启动的时候,重启进程的话,只需要在关闭进程结束后,加上启动进程就可以了。
try {
//查看进程是否存活
boolean isLive = isLive(course);
if (isLive) {
// 存在,则杀死该进程
killProc(course);
//启动进程
startProc(course);
}else{
//启动进程
startProc(course);
} catch (Exception e) {
log.error("重启/杀死提取程序失败。。。");
}
%%%%%最关键的:启动进程代码:%%%%%
/**
* 启动进程
* @throws IOException
*/
public static void startProc(String processName) {
log.info("启动应用程序:" + processName);
if (StringUtils.isNotBlank(processName)) {
try {
Desktop.getDesktop().open(new File(processName));
} catch (Exception e) {
e.printStackTrace();
log.error("应用程序:" + processName + "不存在!");
}
}
}