新增两个接口：jmap 和 jstack，用于获取 Java 应用程序的内存堆转储（heap dump）和线程转储（thread dump）。

添加依赖：

implementation("commons-io:commons-io:2.11.0")

添加controller的API代码：

java">
import org.apache.commons.io.FileUtils
import org.springframework.boot.actuate.management.HeapDumpWebEndpoint
import org.springframework.boot.actuate.management.ThreadDumpEndpoint
import org.springframework.core.io.Resource
import org.springframework.web.bind.annotation.GetMapping
import org.springframework.web.bind.annotation.RequestMapping
import org.springframework.web.bind.annotation.ResponseBody
import org.springframework.web.bind.annotation.RestController
import java.io.IOException
import java.nio.charset.StandardCharsets
import javax.servlet.http.HttpServletResponse@RestController
@RequestMapping
class MonitorController(private val threadDumpEndpoint: ThreadDumpEndpoint?,private val heapDumpWebEndpoint: HeapDumpWebEndpoint?
) {@RequestMapping("jmap")@ResponseBody@Throws(IOException::class)fun jmap(response: HttpServletResponse?): String? {if (this.heapDumpWebEndpoint == null) {return "not existed"}val resource: Resource = this.heapDumpWebEndpoint.heapDump(true).getBody()val bytes: ByteArray = FileUtils.readFileToByteArray(resource.getFile())val delete: Boolean = resource.getFile().delete()return download(response!!, resource.getFilename()!!, bytes, delete.toString())}@GetMapping("jstack")@ResponseBodyfun jstack(response: HttpServletResponse): String? {if (threadDumpEndpoint == null) {return "not existed"}val threads = threadDumpEndpoint.textThreadDump()return download(response, "thread-dump.txt", threads.toByteArray(StandardCharsets.UTF_8), "")}private fun download(response: HttpServletResponse, fileName: String, bytes: ByteArray, value: String): String? {response.characterEncoding = "utf-8"response.contentType = "application/octet-stream"response.addHeader("Content-Length", bytes.size.toString())response.setHeader("Content-Disposition", "attachment; filename=$fileName")try {response.outputStream.use { outputStream ->outputStream.write(bytes)outputStream.flush()return value}} catch (exception: Exception) {return exception.message}}
}