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fix：multi-thread safety vulnerabilities（修复格式化对象非线程安全的漏洞）

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hezhanfeng 2024-09-30 11:02:25 +08:00
parent 0bf95cf419
commit 01e15bda39
1 changed files with 5 additions and 2 deletions
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7
powerjob-server/powerjob-server-starter/src/main/java/tech/powerjob/server/web/response/WorkerStatusVO.java
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@ -48,12 +48,15 @@ public class WorkerStatusVO {
* 27.7%(2.9/8.0 GB) * 27.7%(2.9/8.0 GB)
*/ */
private static final String OTHER_FORMAT = "%s%%（%s / %s GB）"; private static final String OTHER_FORMAT = "%s%%（%s / %s GB）";
private static final DecimalFormat df = new DecimalFormat("#.#");
private static final double THRESHOLD = 0.8; private static final double THRESHOLD = 0.8;
public WorkerStatusVO(WorkerInfo workerInfo) { // 使用 ThreadLocal 为每个线程提供独立的 DecimalFormat 实例
private static final ThreadLocal<DecimalFormat> DECIMAL_FORMAT_THREAD_LOCAL = ThreadLocal.withInitial(() -> new DecimalFormat("#.#"));
public WorkerStatusVO(WorkerInfo workerInfo) {
// 获取当前线程的 DecimalFormat 实例
DecimalFormat df = DECIMAL_FORMAT_THREAD_LOCAL.get();
SystemMetrics systemMetrics = workerInfo.getSystemMetrics(); SystemMetrics systemMetrics = workerInfo.getSystemMetrics();
this.status = 1; this.status = 1;