Java在程序不抛出异常时如何打印堆栈日志？

使用阿里开源的工具Arthas打印堆栈日志，需要下载jar包 arthas-boot.jar。

1. 启动Java应用程序。
2. 启动jar包 arthas-boot.jar。
3. 选择要监控的进程。
4. 运行命令监控想要查看调用链的方法。格式：stack 包名.类名 方法名。
5. 让程序跑起来，可以看到这个方法的调用链。

$ java -jar arthas-boot.jar
[INFO] arthas-boot version: 3.6.6
[INFO] Found existing java process, please choose one and input the serial number of the process, eg : 1. Then hit ENTER.
* [1]: 18240 org.jetbrains.idea.maven.server.RemoteMavenServer36
  [2]: 2672 org.jetbrains.jps.cmdline.Launcher
  [3]: 20276
  [4]: 18888 spring.orm.withXML.MainClass
  [5]: 20488
  [6]: 20968 C:\Users\lixiaomeng\.arthas\lib\3.6.6\arthas\arthas-core.jar
  [7]: 2348 C:\Users\lixiaomeng\.arthas\lib\3.6.6\arthas\arthas-core.jar
4
[INFO] arthas home: C:\Users\lixiaomeng\.arthas\lib\3.6.6\arthas
[INFO] Try to attach process 18888
stack org.springframework.orm.hibernate3.HibernateAccessor flushIfNecessary
[INFO] Attach process 18888 success.
[INFO] arthas-client connect 127.0.0.1 3658
  ,---.  ,------. ,--------.,--.  ,--.  ,---.   ,---.
 /  O  \ |  .--. ''--.  .--'|  '--'  | /  O  \ '   .-'
|  .-.  ||  '--'.'   |  |   |  .--.  ||  .-.  |`.  `-.
|  | |  ||  |\  \    |  |   |  |  |  ||  | |  |.-'    |
`--' `--'`--' '--'   `--'   `--'  `--'`--' `--'`-----'

wiki       https://arthas.aliyun.com/doc
tutorials  https://arthas.aliyun.com/doc/arthas-tutorials.html
version    3.6.6
main_class
pid        18888
time       2022-11-07 21:05:00

IfNecessary88]$ stack org.springframework.orm.hibernate3.HibernateAccessor flush
Press Q or Ctrl+C to abort.
Affect(class count: 2 , method count: 1) cost in 130 ms, listenerId: 1
ts=2022-11-07 21:05:02;thread_name=main;id=1;is_daemon=false;priority=5;TCCL=sun.misc.Launcher$AppClassLoader@18b4aac2
    @org.springframework.orm.hibernate3.HibernateAccessor.flushIfNecessary()
        at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:407)
        at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:339)
        at spring.orm.withXML.dao.EmployeeDaoImpl.save(EmployeeDaoImpl.java:64)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
        at com.sun.proxy.$Proxy21.save(null:-1)
        at spring.orm.withXML.MainClass.main(MainClass.java:33)

ts=2022-11-07 21:05:02;thread_name=main;id=1;is_daemon=false;priority=5;TCCL=sun.misc.Launcher$AppClassLoader@18b4aac2
    @org.springframework.orm.hibernate3.HibernateAccessor.flushIfNecessary()
        at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:407)
        at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
        at org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:912)
        at org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:904)
        at spring.orm.withXML.dao.EmployeeDaoImpl.getAllEmployee(EmployeeDaoImpl.java:59)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
        at com.sun.proxy.$Proxy21.getAllEmployee(null:-1)
        at spring.orm.withXML.MainClass.main(MainClass.java:35)

session (89ba3d4b-ac1f-4db8-8325-4078f5849137) is closed because server is going to shutdown.

注意

java -jar arthas-boot.jar 在运行过程中需要下载依赖到 用户目录/.arthas 文件夹，因此在无法联网的情况下可以先把依赖包下载好放到文件夹下面。