当前位置： 首页 > news >正文

学校网站建设费计入什么科目南京seo网站管理

news 2025/7/31 18:24:19
学校网站建设费计入什么科目,南京seo网站管理,Wordpress 点击跟踪,哪个网站可以做房产信息群发你是否在项目中会碰到以下一些问题： 在代码中打印各种日志来排查，比如方法的入参，出参，及在方法体中打印日志判断走哪行代码还有你觉得代码没问题，可是运行出现却是以前的bug，感觉代码没修改，或…

你是否在项目中会碰到以下一些问题：

  1. 在代码中打印各种日志来排查，比如方法的入参，出参，及在方法体中打印日志判断走哪行代码
  2. 还有你觉得代码没问题，可是运行出现却是以前的bug，感觉代码没修改，或者别人把你修改好之前的代码部署上去了，你想要看线上部署的是不是你修改的最新代码，把包从服务器上下载下来然后再反编译查看
  3. 有些接口请求很慢，你想知道这个接口的方法调用链中耗时时间，你以前是不是通过切面去打印每个方法的耗时时间，修改代码，重新部署
  4. 当进程CPU飙高或者占用内存较大，你用top命令查看，然后top -H -p x，把十进制转成16进制，然后jstack  x | grep -A 10 y命令排查，会觉得有点麻烦
  5. 当本地程序运行正常，线上代码运行不正常，你可能需要优化一个class几行代码，在线上看是否会运行正常，重新打包部署，会觉得有点麻烦

其实阿里的线上排查工具arthas就可以解决上述问题

下载地址：https://alibaba.github.io/arthas/arthas-boot.jar

直接执行命令：

java -jar arthas-boot.jar

如果出现中文乱码，需要添加参数 -Dfile.encoding=UTF-8 ：

java  -Dfile.encoding=UTF-8   -jar arthas-boot.jar

 直接输入你要连接的进程号：如 4

进入arthas交互界面

现在根据以下代码来进行测试：

package com.htf.smm.controller;import com.htf.smm.service.SmmIndexSyncService;
import com.htf.smm.service.impl.TestServiceOne;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.repository.query.Param;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;import java.util.Objects;@RestController
@RequestMapping("/smm")
public class SmmController {@Autowiredprivate TestServiceOne testServiceOne;@RequestMapping("/ycTest")public void ycTest(Long time) {System.out.println("执行开始，"+time);Other other = new Other();other.setInfo("其他");Coordinate coordinate = new Coordinate();coordinate.setX(1);coordinate.setY(2);coordinate.setOther(other);Address address = new Address();address.setAddr("昌北");address.setCoordinate(coordinate);School school = new School();school.setName("华东交大");school.setAddress(address);ParamEntiry paramEntiry = new ParamEntiry();paramEntiry.setName("yc");paramEntiry.setAge(32);paramEntiry.setSchool(school);test(paramEntiry);System.out.println("执行完毕");}public ReturnEntity test(ParamEntiry paramEntiry){ReturnEntity returnEntity = new ReturnEntity();Other other = new Other();other.setInfo("其他");Coordinate coordinate = new Coordinate();coordinate.setX(1);coordinate.setY(2);coordinate.setOther(other);Address address = new Address();address.setAddr("昌北");address.setCoordinate(coordinate);School school = new School();school.setName("华东交大");school.setAddress(address);returnEntity.setSchool(school);return returnEntity;}
}

package com.htf.smm.controller;import lombok.Data;@Data
public class ParamEntiry {private  String name;private Integer age;private School school;
}
@Data
class School{private String name;private Address address;
}
@Data
class Address{private String addr;private Coordinate coordinate;
}
@Data
class Coordinate{private int x;private int y;private Other other;
}
@Data
class Other{private String info;
}

@Data
public class ReturnEntity {private  String name;private Integer age;private School school;
}
package com.htf.smm.service.impl;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;@Service
public class TestServiceOne {private String serviceName = "one";@Autowiredprivate TestServiceTwo testServiceTwo;
}

package com.htf.smm.service.impl;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;@Service
public class TestServiceTwo {private String serviceName = "two";@Autowiredprivate TestServiceThree testServiceThree;
}

package com.htf.smm.service.impl;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;@Service
public class TestServiceThree {private String serviceName = "three";@Autowiredprivate TestServiceFour testServiceFour;
}

package com.htf.smm.service.impl;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;@Service
public class TestServiceFour {private String serviceName = "four";@Autowiredprivate TestServiceFive testServiceFive;
}

下面来介绍常用的几个命令，watch，trace，stack ，jad，redefine ，thrad 

watch命令

参数名称参数说明
class-pattern类名表达式匹配
method-pattern函数名表达式匹配
express观察表达式，默认值：{params, target, returnObj}
condition-express条件表达式
[b]在函数调用之前观察
[e]在函数异常之后观察
[s]在函数返回之后观察
[f]在函数结束之后(正常返回和异常返回)观察
[E]开启正则表达式匹配，默认为通配符匹配
[x:]指定输出结果的属性遍历深度，默认为 1，最大值是 4
[arthas@9388]$ watch com.htf.smm.controller.SmmController test
Press Q or Ctrl+C to abort.
Affect(class count: 1 , method count: 1) cost in 27 ms, listenerId: 5
method=com.htf.smm.controller.SmmController.test location=AtExit
ts=2023-03-01 15:11:33; [cost=0.0424ms] result=@ArrayList[@Object[][isEmpty=false;size=1],@SmmController[com.htf.smm.controller.SmmController@59fe5960],@ReturnEntity[ReturnEntity(name=null, age=null, school=School(name=华东交大, address=Address(addr=昌北, coordinate=Coordinate(x=1, y=2, other=Other(info=其他)))))],
]

默认返回params，target，returnObj（{params, target, returnObj}）深度为1（-x 1），且在函数结束之后(正常返回和异常返回)（-f）观察，即等于下面这个命令

[arthas@9388]$ watch com.htf.smm.controller.SmmController test "{params, target, returnObj}" -x 1 -f
Press Q or Ctrl+C to abort.
Affect(class count: 1 , method count: 1) cost in 28 ms, listenerId: 7
method=com.htf.smm.controller.SmmController.test location=AtExit
ts=2023-03-01 15:44:01; [cost=0.0398ms] result=@ArrayList[@Object[][isEmpty=false;size=1],@SmmController[com.htf.smm.controller.SmmController@59fe5960],@ReturnEntity[ReturnEntity(name=null, age=null, school=School(name=华东交大, address=Address(addr=昌北, coordinate=Coordinate(x=1, y=2, other=Other(info=其他)))))],
]

@Object[][isEmpty=false;size=1] 为params，为什么是个数组呢？因为参数可能有多个

@SmmController[com.htf.smm.controller.SmmController@59fe5960] 为当前对象

 @ReturnEntity[ReturnEntity(name=null, age=null, school=School(name=华东交大, address=Address(addr=昌北, coordinate=Coordinate(x=1, y=2, other=Other(info=其他)))))] 为returnObj

location=AtExit 为在函数结束之后正常返回观察

重要参数-x，默认为1，但是当参数和当前对象的属性有对象引用的时候，我们就需要用到-x，如上命令执行 @SmmController[com.htf.smm.controller.SmmController@59fe5960] 我们无法查看到当前对象内部有什么属性，@Object[][isEmpty=false;size=1]当前参数的具体值

我们设置-x 2试试

[arthas@9388]$ watch com.htf.smm.controller.SmmController test "{params, target, returnObj}" -x 2 -f
Press Q or Ctrl+C to abort.
Affect(class count: 1 , method count: 1) cost in 29 ms, listenerId: 14
method=com.htf.smm.controller.SmmController.test location=AtExit
ts=2023-03-01 16:01:39; [cost=0.0249ms] result=@ArrayList[@Object[][@ParamEntiry[ParamEntiry(name=yc, age=32, school=School(name=华东交大, address=Address(addr=昌北, coordinate=Coordinate(x=1, y=2, other=Other(info=其他)))))],],@SmmController[testServiceOne=@TestServiceOne[com.htf.smm.service.impl.TestServiceOne@55111d28],],@ReturnEntity[name=null,age=null,school=@School[School(name=华东交大, address=Address(addr=昌北, coordinate=Coordinate(x=1, y=2, other=Other(info=其他))))],],
]

上述所示，就把参数1对应的对象展示出来了，把当前对象中的对象引用展示出来了，把返回对象的引用给展示出来了

注意：-x的最大值为4

重要参数-n，默认是无限次，当线上执行这个接口比较频繁，我们用运维工具可能会频繁去监听打印这个方法相关的信息，很耗服务器资源，而且影响接口响应耗时的时间，当我们为了排查问题，只要获取到一次监听的时候，就可以加-n参数，-n 1表示只执行两次,执行1次后，就会自动退出监听

[arthas@9388]$ watch com.htf.smm.controller.SmmController test "{params, target, returnObj}" -x 2 -f -n 1
Press Q or Ctrl+C to abort.
Affect(class count: 1 , method count: 1) cost in 30 ms, listenerId: 15
method=com.htf.smm.controller.SmmController.test location=AtExit
ts=2023-03-01 16:12:51; [cost=0.0357ms] result=@ArrayList[@Object[][@ParamEntiry[ParamEntiry(name=yc, age=32, school=School(name=华东交大, address=Address(addr=昌北, coordinate=Coordinate(x=1, y=2, other=Other(info=其他)))))],],@SmmController[testServiceOne=@TestServiceOne[com.htf.smm.service.impl.TestServiceOne@55111d28],],@ReturnEntity[name=null,age=null,school=@School[School(name=华东交大, address=Address(addr=昌北, coordinate=Coordinate(x=1, y=2, other=Other(info=其他))))],],
]
Command execution times exceed limit: 1, so command will exit. You can set it with -n option.

最后一行Command execution times exceed limit: 1, so command will exit. You can set it with -n option.表示执行次数限制为1次，可以通过-n来设置执行的次数

trace命令

参数名称参数说明
class-pattern类名表达式匹配
method-pattern方法名表达式匹配
condition-express条件表达式
[E]开启正则表达式匹配，默认为通配符匹配
[n:]命令执行次数
#cost方法执行耗时

根据耗时"#cost>0"大小匹配如下，耗时是以s为单位的 

[arthas@9388]$ trace com.htf.smm.controller.SmmController ycTest "#cost>0"
Press Q or Ctrl+C to abort.
Affect(class count: 1 , method count: 1) cost in 36 ms, listenerId: 27
`---ts=2023-03-02 09:54:37;thread_name=http-nio-8080-exec-2;id=4f;is_daemon=true;priority=5;TCCL=org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader@1aa6e3c0`---[0.3154ms] com.htf.smm.controller.SmmController:ycTest()+---[3.01% 0.0095ms ] com.htf.smm.controller.Other:<init>() #31+---[1.49% 0.0047ms ] com.htf.smm.controller.Other:setInfo() #32+---[1.81% 0.0057ms ] com.htf.smm.controller.Coordinate:<init>() #33+---[1.55% 0.0049ms ] com.htf.smm.controller.Coordinate:setX() #34+---[1.20% 0.0038ms ] com.htf.smm.controller.Coordinate:setY() #35+---[1.30% 0.0041ms ] com.htf.smm.controller.Coordinate:setOther() #36+---[1.30% 0.0041ms ] com.htf.smm.controller.Address:<init>() #37+---[1.17% 0.0037ms ] com.htf.smm.controller.Address:setAddr() #38+---[1.24% 0.0039ms ] com.htf.smm.controller.Address:setCoordinate() #39+---[1.17% 0.0037ms ] com.htf.smm.controller.School:<init>() #40+---[1.33% 0.0042ms ] com.htf.smm.controller.School:setName() #41+---[1.33% 0.0042ms ] com.htf.smm.controller.School:setAddress() #42+---[1.24% 0.0039ms ] com.htf.smm.controller.ParamEntiry:<init>() #43+---[1.14% 0.0036ms ] com.htf.smm.controller.ParamEntiry:setName() #44+---[1.43% 0.0045ms ] com.htf.smm.controller.ParamEntiry:setAge() #45+---[1.24% 0.0039ms ] com.htf.smm.controller.ParamEntiry:setSchool() #46`---[3.01% 0.0095ms ] com.htf.smm.controller.SmmController:test() #47

stack命令

参数名称参数说明
class-pattern类名表达式匹配
method-pattern方法名表达式匹配
condition-express条件表达式
[E]开启正则表达式匹配，默认为通配符匹配
[n:]执行次数限制（stack，watch，trace命令用法一致）

根据参数值"params[0].name=='yc'"匹配，用法如下：

[arthas@9388]$ stack com.htf.smm.controller.SmmController test "params[0].name=='yc'"
Press Q or Ctrl+C to abort.
Affect(class count: 1 , method count: 1) cost in 28 ms, listenerId: 37
ts=2023-03-02 10:16:57;thread_name=http-nio-8080-exec-4;id=51;is_daemon=true;priority=5;TCCL=org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader@1aa6e3c0@com.htf.smm.controller.SmmController.test()at com.htf.smm.controller.SmmController.ycTest(SmmController.java:47)at sun.reflect.GeneratedMethodAccessor55.invoke(null:-1)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:483)at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)at javax.servlet.http.HttpServlet.service(HttpServlet.java:626)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:744)

注意：stack命令和trace命令参数值匹配和耗时大小匹配可以联合使用，如下：

[arthas@9388]$ stack com.htf.smm.controller.SmmController test "params[0].name=='yc'" "#cost>0"
Press Q or Ctrl+C to abort.
Affect(class count: 1 , method count: 1) cost in 38 ms, listenerId: 38
ts=2023-03-02 10:23:37;thread_name=http-nio-8080-exec-6;id=53;is_daemon=true;priority=5;TCCL=org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader@1aa6e3c0@com.htf.smm.controller.SmmController.test()at com.htf.smm.controller.SmmController.ycTest(SmmController.java:47)at sun.reflect.GeneratedMethodAccessor55.invoke(null:-1)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:483)at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)at javax.servlet.http.HttpServlet.service(HttpServlet.java:626)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:744)

jad命令

lass-pattern类名表达式匹配
[c:]类所属 ClassLoader 的 hashcode
[classLoaderClass:]指定执行表达式的 ClassLoader 的 class name
[E]开启正则表达式匹配，默认为通配符匹配

反编译类jad 类路径：

[arthas@9388]$ jad com.htf.smm.controller.SmmControllerClassLoader:
+-sun.misc.Launcher$AppClassLoader@58644d46+-sun.misc.Launcher$ExtClassLoader@71c7db30Location:
/E:/code/htf/htf-parent/htf-damp-parent/htf-damp-smm/target/classes//** Decompiled with CFR.** Could not load the following classes:*  com.htf.smm.controller.Address*  com.htf.smm.controller.Coordinate*  com.htf.smm.controller.Other*  com.htf.smm.controller.ParamEntiry*  com.htf.smm.controller.ReturnEntity*  com.htf.smm.controller.School*  com.htf.smm.service.impl.TestServiceOne*/package com.htf.smm.controller;import com.htf.smm.controller.Address;import com.htf.smm.controller.Coordinate;import com.htf.smm.controller.Other;import com.htf.smm.controller.ParamEntiry;import com.htf.smm.controller.ReturnEntity;import com.htf.smm.controller.School;import com.htf.smm.service.impl.TestServiceOne;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestController@RequestMapping(value={"/smm"})public class SmmController {@Autowiredprivate TestServiceOne testServiceOne;public ReturnEntity test(ParamEntiry paramEntiry) {ReturnEntity returnEntity = new ReturnEntity();Other other = new Other();
/*54*/         other.setInfo("其他");Coordinate coordinate = new Coordinate();
/*56*/         coordinate.setX(1);
/*57*/         coordinate.setY(2);
/*58*/         coordinate.setOther(other);Address address = new Address();
/*60*/         address.setAddr("昌北");
/*61*/         address.setCoordinate(coordinate);School school = new School();
/*63*/         school.setName("华东交大");
/*64*/         school.setAddress(address);
/*65*/         returnEntity.setSchool(school);
/*66*/         return returnEntity;}@RequestMapping(value={"/ycTest"})public void ycTest(Long time) throws InterruptedException {
/*30*/         System.out.println("执行开始，" + time);Other other = new Other();
/*32*/         other.setInfo("其他");Coordinate coordinate = new Coordinate();
/*34*/         coordinate.setX(1);
/*35*/         coordinate.setY(2);
/*36*/         coordinate.setOther(other);Address address = new Address();
/*38*/         address.setAddr("昌北");
/*39*/         address.setCoordinate(coordinate);School school = new School();
/*41*/         school.setName("华东交大");
/*42*/         school.setAddress(address);ParamEntiry paramEntiry = new ParamEntiry();
/*44*/         paramEntiry.setName("yc");
/*45*/         paramEntiry.setAge(Integer.valueOf(32));
/*46*/         paramEntiry.setSchool(school);
/*47*/         this.test(paramEntiry);
/*48*/         System.out.println("执行完毕");}}Affect(row-cnt:1) cost in 357 ms.

其中有ClassLoader和Location信息，如果把他去掉，加 --source-only 参数，如下所示：

[arthas@9388]$ jad com.htf.smm.controller.SmmController  --source-only/** Decompiled with CFR.** Could not load the following classes:*  com.htf.smm.controller.Address*  com.htf.smm.controller.Coordinate*  com.htf.smm.controller.Other*  com.htf.smm.controller.ParamEntiry*  com.htf.smm.controller.ReturnEntity*  com.htf.smm.controller.School*  com.htf.smm.service.impl.TestServiceOne*/package com.htf.smm.controller;import com.htf.smm.controller.Address;import com.htf.smm.controller.Coordinate;import com.htf.smm.controller.Other;import com.htf.smm.controller.ParamEntiry;import com.htf.smm.controller.ReturnEntity;import com.htf.smm.controller.School;import com.htf.smm.service.impl.TestServiceOne;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestController@RequestMapping(value={"/smm"})public class SmmController {@Autowiredprivate TestServiceOne testServiceOne;public ReturnEntity test(ParamEntiry paramEntiry) {ReturnEntity returnEntity = new ReturnEntity();Other other = new Other();
/*54*/         other.setInfo("其他");Coordinate coordinate = new Coordinate();
/*56*/         coordinate.setX(1);
/*57*/         coordinate.setY(2);
/*58*/         coordinate.setOther(other);Address address = new Address();
/*60*/         address.setAddr("昌北");
/*61*/         address.setCoordinate(coordinate);School school = new School();
/*63*/         school.setName("华东交大");
/*64*/         school.setAddress(address);
/*65*/         returnEntity.setSchool(school);
/*66*/         return returnEntity;}@RequestMapping(value={"/ycTest"})public void ycTest(Long time) throws InterruptedException {
/*30*/         System.out.println("执行开始，" + time);Other other = new Other();
/*32*/         other.setInfo("其他");Coordinate coordinate = new Coordinate();
/*34*/         coordinate.setX(1);
/*35*/         coordinate.setY(2);
/*36*/         coordinate.setOther(other);Address address = new Address();
/*38*/         address.setAddr("昌北");
/*39*/         address.setCoordinate(coordinate);School school = new School();
/*41*/         school.setName("华东交大");
/*42*/         school.setAddress(address);ParamEntiry paramEntiry = new ParamEntiry();
/*44*/         paramEntiry.setName("yc");
/*45*/         paramEntiry.setAge(Integer.valueOf(32));
/*46*/         paramEntiry.setSchool(school);
/*47*/         this.test(paramEntiry);
/*48*/         System.out.println("执行完毕");}}

如果不展示行号，加--lineNumber false 参数

[arthas@9388]$ jad com.htf.smm.controller.SmmController  --source-only  --lineNumber false
/** Decompiled with CFR.** Could not load the following classes:*  com.htf.smm.controller.Address*  com.htf.smm.controller.Coordinate*  com.htf.smm.controller.Other*  com.htf.smm.controller.ParamEntiry*  com.htf.smm.controller.ReturnEntity*  com.htf.smm.controller.School*  com.htf.smm.service.impl.TestServiceOne*/
package com.htf.smm.controller;import com.htf.smm.controller.Address;
import com.htf.smm.controller.Coordinate;
import com.htf.smm.controller.Other;
import com.htf.smm.controller.ParamEntiry;
import com.htf.smm.controller.ReturnEntity;
import com.htf.smm.controller.School;
import com.htf.smm.service.impl.TestServiceOne;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
@RequestMapping(value={"/smm"})
public class SmmController {@Autowiredprivate TestServiceOne testServiceOne;public ReturnEntity test(ParamEntiry paramEntiry) {ReturnEntity returnEntity = new ReturnEntity();Other other = new Other();other.setInfo("其他");Coordinate coordinate = new Coordinate();coordinate.setX(1);coordinate.setY(2);coordinate.setOther(other);Address address = new Address();address.setAddr("昌北");address.setCoordinate(coordinate);School school = new School();school.setName("华东交大");school.setAddress(address);returnEntity.setSchool(school);return returnEntity;}@RequestMapping(value={"/ycTest"})public void ycTest(Long time) throws InterruptedException {System.out.println("执行开始，" + time);Other other = new Other();other.setInfo("其他");Coordinate coordinate = new Coordinate();coordinate.setX(1);coordinate.setY(2);coordinate.setOther(other);Address address = new Address();address.setAddr("昌北");address.setCoordinate(coordinate);School school = new School();school.setName("华东交大");school.setAddress(address);ParamEntiry paramEntiry = new ParamEntiry();paramEntiry.setName("yc");paramEntiry.setAge(Integer.valueOf(32));paramEntiry.setSchool(school);this.test(paramEntiry);System.out.println("执行完毕");}
}

反编译类中的方法，如下：

[arthas@9388]$ jad com.htf.smm.controller.SmmController test  --source-only  --lineNumber false
public ReturnEntity test(ParamEntiry paramEntiry) {ReturnEntity returnEntity = new ReturnEntity();Other other = new Other();other.setInfo("其他");Coordinate coordinate = new Coordinate();coordinate.setX(1);coordinate.setY(2);coordinate.setOther(other);Address address = new Address();address.setAddr("昌北");address.setCoordinate(coordinate);School school = new School();school.setName("华东交大");school.setAddress(address);returnEntity.setSchool(school);return returnEntity;
}

retransform命令，结合 jad/mc 命令使用

1、jad 命令反编译，然后可以用其它编译器 

[arthas@9388]$ jad com.htf.smm.controller.SmmController   --source-only  --lineNumber false > D:\\\tmp\\\SmmController.java

 

2、修改源码 ，修改了日志输出

 

3、mc 命令来内存编译修改过的代码

[arthas@9388]$ mc  D:\\\tmp\\\SmmController.java -d D:\\\tmp
Memory compiler output:
D:\tmp\com\htf\smm\controller\SmmController.class
Affect(row-cnt:1) cost in 1792 ms.

  

4、用 retransform 命令加载新的字节码 

[arthas@9388]$ retransform D:\\\tmp\\\com\\\htf\\\smm\\\controller\\\SmmController.class
retransform success, size: 1, classes:
com.htf.smm.controller.SmmController

之后调用的时候，日志输出是修改了执行完毕，之前是执行完毕

thread命令

参数名称参数说明
id线程 id
[n:]指定最忙的前 N 个线程并打印堆栈
[b]找出当前阻塞其他线程的线程
[i <value>]指定 cpu 使用率统计的采样间隔，单位为毫秒，默认值为 200
[--all]显示所有匹配的线程

我们用它来排查cpu占比很高的问题 

得知占比cpu最高的线程的id是81，执行命令thread 81，如下：

[arthas@16256]$ thread 81
"http-nio-8080-exec-1" Id=81 RUNNABLEat java.io.FileOutputStream.writeBytes(Native Method)at java.io.FileOutputStream.write(FileOutputStream.java:307)at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)at java.io.PrintStream.write(PrintStream.java:482)at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)at sun.nio.cs.StreamEncoder.flushBuffer(StreamEncoder.java:104)at java.io.OutputStreamWriter.flushBuffer(OutputStreamWriter.java:185)at java.io.PrintStream.newLine(PrintStream.java:546)at java.io.PrintStream.println(PrintStream.java:807)at com.htf.smm.controller.SmmController.test(SmmController.java:66)at com.htf.smm.controller.SmmController.ycTest(SmmController.java:46)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:483)at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)at javax.servlet.http.HttpServlet.service(HttpServlet.java:626)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:744)

 得知在业务代码

    at com.htf.smm.controller.SmmController.test(SmmController.java:66)
    at com.htf.smm.controller.SmmController.ycTest(SmmController.java:46)中有问题

 参考：

  • monitor——方法执行监控

  • watch——方法执行数据观测，查看方法的入参，出参，和当前对象的属性

  • trace——方法内部调用路径，并输出方法路径上的每个节点上耗时

  • stack——输出当前方法之前到当前方法被调用的调用路径

  • tt——方法执行数据的时空隧道，记录下指定方法每次调用的入参和返回信息，并能对这些不同的时间下调用进行观测

  • jad反编译

  • redefine   /xx/xx.class  更新class文件 服务重启就是失效了

  • dashboard看板，thread命令可以排查cpu和内存飙高问题


文章转载自：
http://dinncohives.tqpr.cn
http://dinncoorcelite.tqpr.cn
http://dinncovagrom.tqpr.cn
http://dinncoperennity.tqpr.cn
http://dinncomabela.tqpr.cn
http://dinncodisembark.tqpr.cn
http://dinncozoometric.tqpr.cn
http://dinncofairytale.tqpr.cn
http://dinncodissymmetrical.tqpr.cn
http://dinnconullifier.tqpr.cn
http://dinncosimpleminded.tqpr.cn
http://dinncosoymilk.tqpr.cn
http://dinncoclipboard.tqpr.cn
http://dinncoreforger.tqpr.cn
http://dinncodiscodance.tqpr.cn
http://dinncoshouting.tqpr.cn
http://dinncoabjection.tqpr.cn
http://dinncoseptuagint.tqpr.cn
http://dinncoanguilla.tqpr.cn
http://dinncodikey.tqpr.cn
http://dinncobackcourt.tqpr.cn
http://dinncosuperweapon.tqpr.cn
http://dinncoparadox.tqpr.cn
http://dinncomarginal.tqpr.cn
http://dinncochanticleer.tqpr.cn
http://dinncocrrus.tqpr.cn
http://dinncomarketplace.tqpr.cn
http://dinncosilt.tqpr.cn
http://dinncoscuffle.tqpr.cn
http://dinncoappall.tqpr.cn
http://dinncoenterotoxemia.tqpr.cn
http://dinncocauld.tqpr.cn
http://dinncobasipetal.tqpr.cn
http://dinncoectoblast.tqpr.cn
http://dinncopollux.tqpr.cn
http://dinncounavenged.tqpr.cn
http://dinncocommentary.tqpr.cn
http://dinncoanswerable.tqpr.cn
http://dinncotreponeme.tqpr.cn
http://dinncosardonic.tqpr.cn
http://dinncocuffy.tqpr.cn
http://dinncovaluable.tqpr.cn
http://dinncorockshaft.tqpr.cn
http://dinncoranee.tqpr.cn
http://dinncomakebate.tqpr.cn
http://dinncosalmi.tqpr.cn
http://dinncojacquette.tqpr.cn
http://dinncosleuthhound.tqpr.cn
http://dinncodemur.tqpr.cn
http://dinncodriller.tqpr.cn
http://dinncoporkling.tqpr.cn
http://dinncomidcourse.tqpr.cn
http://dinncopericranium.tqpr.cn
http://dinncomithraistic.tqpr.cn
http://dinncooutfoot.tqpr.cn
http://dinncorebuttal.tqpr.cn
http://dinncoicaria.tqpr.cn
http://dinncozila.tqpr.cn
http://dinnconoachian.tqpr.cn
http://dinncoshitless.tqpr.cn
http://dinncodowitcher.tqpr.cn
http://dinncocaller.tqpr.cn
http://dinncowreckage.tqpr.cn
http://dinncodts.tqpr.cn
http://dinncopositronium.tqpr.cn
http://dinncocryptozoite.tqpr.cn
http://dinncodanube.tqpr.cn
http://dinncolordly.tqpr.cn
http://dinncounpeople.tqpr.cn
http://dinncoadrate.tqpr.cn
http://dinncolargamente.tqpr.cn
http://dinncopublishable.tqpr.cn
http://dinncohypertherm.tqpr.cn
http://dinncoheroism.tqpr.cn
http://dinncoantehall.tqpr.cn
http://dinncotympanoplasty.tqpr.cn
http://dinncolalopathy.tqpr.cn
http://dinncohardbound.tqpr.cn
http://dinncoriant.tqpr.cn
http://dinncohemishere.tqpr.cn
http://dinncocribbing.tqpr.cn
http://dinncofugacity.tqpr.cn
http://dinncocircumvent.tqpr.cn
http://dinncobebung.tqpr.cn
http://dinncofatefully.tqpr.cn
http://dinncosubarachnoid.tqpr.cn
http://dinncointonation.tqpr.cn
http://dinncoliverleaf.tqpr.cn
http://dinncodemy.tqpr.cn
http://dinncobladdery.tqpr.cn
http://dinncopratie.tqpr.cn
http://dinncobivalent.tqpr.cn
http://dinnconitrocotton.tqpr.cn
http://dinncobrocoli.tqpr.cn
http://dinncorebroadcast.tqpr.cn
http://dinncomousehole.tqpr.cn
http://dinncoclavus.tqpr.cn
http://dinncobecoming.tqpr.cn
http://dinncofooter.tqpr.cn
http://dinncoaaal.tqpr.cn
http://www.dinnco.com/news/91752.html

相关文章：

  • 做网站烧钱百度seo排名培训优化
  • 怎样查看一个网站是用什么开源程序做的新型网络营销模式
  • 微网站的链接怎么做的网站后端开发
  • 广州专业网站开发google store
  • 宠物网站建设规划书十大营销策划公司排名
  • 做公司网站哪里好福州短视频seo
  • 南京seo网站优化搜索引擎优化的方法
  • 网站流量限制seo企业推广案例
  • 免费舆情网站直接打开网络营销心得体会300字
  • 东阳厂家高端网站设计企业整站推广
  • 网站建设中企动力推荐产品线下推广方式都有哪些
  • 怎样创建设计公司网站广告发布平台
  • 湖南省人民政府官方网站seo优化多少钱
  • 武进建设局网站织梦seo排名优化教程
  • 专业的培训网站建设seo专员是做什么的
  • 深圳有做网站公司企业培训方案
  • 网站会员系统wordpressseo推广外包报价表
  • 做mad的素材网站搜索推广开户
  • wordpress显示选项屏蔽自定义栏目宁波网站建设优化企业
  • 带数据库网站设计青岛seo服务哪家好
  • 企业形象网站开发业务范畴百度快速排名软件下载
  • 肇庆市专注网站建设平台巩义网络推广公司
  • win7做系统网站哪个好网站排名优化查询
  • 企业如何制作网站管理系统个人网页制作教程
  • 做游戏模型挣钱的网站做推广的都是怎么推
  • 清溪仿做网站百度学术论文官网入口
  • 网站建设需要哪些知识长沙关键词优化首选
  • 有没有专门搞网站上线的公司无锡优化网站排名
  • html5手机移动app网站制作教程广州网络推广平台
  • 国内摄影作品网站免费发布产品的网站