1、导入

import java.util.concurrent.CompletableFuture;

2、方法中启用两个线程，分别执行两个同步的update

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@Override
public byte[] update() throws Exception {

 CompletableFuture.runAsync(() -> update(updateWrapper));
 CompletableFuture.runAsync(() -> cardService.update(updateWrapper1));

}


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