• btrace on github

demo 动态获取传入参数

• 源码

@RestController
@RequestMapping("/ch4")
public class Ch4Controller{
  @RequestMapping("/arg1")
  public String arg1(@RequestParam("name")String name){
    return "hello,"+name;
  }
}

• btrace脚本(PrintArgSimple.java)

import com.sun.btrace.AnyType;
import com.sun.btrace.annotations.*;
import static com.sun.btrace.BTraceUtils.*;

@BTrace
public class PrintArgSimple{
  @OnMethod(
    clazz="com.xxx.monitor_tuning.cp4.ch4Controller",
    method="arg1",
    location=@Location(Kind.ENTRY)
  )
  public static void anyRead(@ProbeClassName String pcn, 
    @ProbeMethodName String pmn,
    AnyType[] args){
    BTraceUtils.printArray(args);
    BTraceUtils.printArray(pcn+","+pmn);
    BTraceUtils.printArray();
  }
}