commit

src/main/java/shark/arthas/ArthasInActionApplication.java

@@ -2,8 +2,10 @@ package shark.arthas.demo;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.scheduling.annotation.EnableScheduling;
 
 @SpringBootApplication
+@EnableScheduling
 public class ArthasInActionApplication {
 
     public static void main(String[] args) {

src/main/java/shark/arthas/demo/线程被锁定或死锁.java → src/main/java/shark/arthas/demo/Sample01.java

-package shark.arthas.demo;
@@ -17,7 +17,7 @@ import java.util.concurrent.locks.ReentrantLock;
  */
 @RestController
 @RequestMapping("01")
-public class 线程被锁定或死锁 {
+public class Sample01 {
     private ReentrantLock lock1 = new ReentrantLock();
     private ReentrantLock lock2 = new ReentrantLock();
 

src/main/java/shark/arthas/demo/Sample02.java

+package shark.arthas.demo;
+
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+/**
+ * ognl -x 3 '#springContext=@shark.arthas.demo.SpringUtil@ac,#springContext.getBean("sample02").execute()'
+ * @author yuwc
+ * @ClassName 通过ognl表达式执行方法
+ * @description: 通过ognl表达式执行方法
+ * @date 2024年03月21日
+ * @version: 1.0
+ */
+@Component
+public class Sample02 {
+    @Scheduled(fixedDelayString =  "300000")
+    public void execute(){
+        System.out.println("method invoker");
+    }
+}

src/main/java/shark/arthas/demo/Sample03.java

+package shark.arthas.demo;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StopWatch;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.concurrent.TimeUnit;
+
+/**
+ * trace shark.arthas.demo.Sample03 handle --skipJDKMethod false
+ * 新终端 2，使用telnet localhost 3658连接上
+ * trace shark.arthas.demo.Sample03 methodB  --listenerId 3
+ * trace shark.arthas.demo.Runner doStart  --listenerId 3
+ * @author yuwc
+ * @ClassName 定位方法执行耗时原因
+ * @description: 定位方法执行耗时原因
+ * @date 2024年03月21日
+ * @version: 1.0
+ */
+@RestController
+@RequestMapping("03")
+public class Sample03 {
+    @Autowired
+    Runner runner;
+    @RequestMapping("/useTime")
+    public void handle() throws InterruptedException {
+        StopWatch stopWatch = new StopWatch();
+        stopWatch.start();
+        methodA();
+        methodB();
+        stopWatch.stop();
+    }
+    private void methodA(){
+        System.out.println("执行methodA");
+    }
+    private void methodB() throws InterruptedException {
+        System.out.println("执行methodB");
+        runner.doStart();
+    }
+}
+@Component
+class Runner{
+    public void doStart() throws InterruptedException {
+        TimeUnit.SECONDS.sleep(3);
+    }
+}

src/main/java/shark/arthas/demo/Sample04.java

+package shark.arthas.demo;
+
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * thread
+ * thread 线程ID
+ * @author yuwc
+ * @ClassName Sample04
+ * @description: 排查CPU使用率高
+ * @date 2024年03月21日
+ * @version: 1.0
+ */
+@RestController
+@RequestMapping("04")
+public class Sample04 {
+    @RequestMapping("{url}")
+    public void handle(@PathVariable("url") String v){
+        while (true) {
+
+        }
+//        if (StringUtils.endsWithIgnoreCase("v1", v)) {
+//            method(1);
+//        }else if (StringUtils.endsWithIgnoreCase("v2", v)) {
+//            method("字符串");
+//        }else if (StringUtils.endsWithIgnoreCase("v3", v)) {
+//            method("字符串1", "字符串2");
+//        }
+    }
+//    private void method(int param){
+//        System.out.println(String.format("param1:%s", param));
+//    }
+//    private void method(String param){
+//        System.out.println(String.format("param1:%s", param));
+//    }
+//    private void method(String param1, String param2){
+//        System.out.println(String.format("param1:%s，param2:%s", param1, param2));
+//    }
+}

src/main/java/shark/arthas/demo/SpringUtil.java

+package shark.arthas.demo;
+
+import org.springframework.beans.BeansException;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author yuwc
+ * @ClassName SpringUtil
+ * @description: SpringUtil
+ * @date 2024年03月21日
+ * @version: 1.0
+ */
+@Component
+public class SpringUtil implements ApplicationContextAware {
+    public static ApplicationContext ac;
+//    public static <T> T getBean(Class<T> tClass){
+//        return ac.getBean(tClass);
+//    }
+    @Override
+    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+        ac = applicationContext;
+    }
+}

src/main/resources/static/index.html

+<html>
+<body>
+<h1>hello word!!!</h1>
+<p>this is a html page</p>
+</body>
+</html>
\ No newline at end of file

src/test/java/shark/arthas/demo/ArthasInActionApplicationTests.java

+package shark.arthas.demo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ArthasInActionApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}