求助 OutputStream报Stream Closed错误

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【Spring】解决Excel导出接口中的Stream is closed错误：避免双重关闭流的实战指南 本文深入剖析了Spring Boot应用中Excel导出接口常见的'Stream is closed'错误根源，即Spring MVC框架的消息转换器与Servlet容器对输出流的双重关闭冲突。文章提供了三种实战解决方案：将控制器方法返回值改为void、使用ResponseEntity或StreamingResponseBody进行流式输出，以及调整框架配置。重点推荐使用void返回值或StreamingResponseBody来避免流冲突，确保文件下载功能稳定可靠。 阅读详情
我用了一个OutputStreamWriter以及它的修饰类BufferedWriter捕获了Process的OutputStreamWriter，但是运行第二次的时候会报java.io.IOException: Stream Closed的错误，网上这类报错都是先关闭修饰类再关闭OutputStreamWriter，我按照这个方法试了，还是会报这个错误
错误的部分的代码：
  

                    String cmd=Input.getText();

                    Output.appendText(cmd);

                    OutputStreamWriter OSW=new OutputStreamWriter(StartServer.getOutputStream());

                    BufferedWriter Writer=new BufferedWriter(OSW);

                    Writer.write(cmd);

                    Writer.close();

                    OSW.close

错误信息：
java.io.IOException: Stream Closed
at java.io.FileOutputStream.writeBytes(Native Method)
at java.io.FileOutputStream.write(FileOutputStream.java:326)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at java.io.FilterOutputStream.close(FilterOutputStream.java:158)
at sun.nio.cs.StreamEncoder.implClose(StreamEncoder.java:320)
at sun.nio.cs.StreamEncoder.close(StreamEncoder.java:149)
at java.io.OutputStreamWriter.close(OutputStreamWriter.java:233)
at xyz.shandiankulishe.msm_UI.RunServer$1.handle(RunServer.java:73)
at xyz.shandiankulishe.msm_UI.RunServer$1.handle(RunServer.java:61)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8411)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:394)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(GlassViewEventHandler.java:432)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:410)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:431)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$4(WinApplication.java:186)
at java.lang.Thread.run(Thread.java:748)
完整代码：
package xyz.shandiankulishe.msm_UI;

import javafx.application.Application;

import javafx.concurrent.Task;

import javafx.event.ActionEvent;

import javafx.event.EventHandler;

import javafx.scene.Group;

import javafx.scene.Scene;

import javafx.scene.control.Button;

import javafx.scene.control.TextArea;

import javafx.scene.control.TextField;

import javafx.scene.image.ImageView;

import javafx.scene.paint.Color;

import javafx.scene.text.Font;

import javafx.scene.text.Text;

import javafx.stage.Stage;



import java.io.*;

import java.lang.management.ManagementFactory;

import com.sun.management.OperatingSystemMXBean;



public class RunServer extends Application{

    public static void main(String[] args){

        launch(args);

    }

    @Override

    public void start(Stage primaryStage) throws Exception {

        Group root=new Group();

        Scene scene=new Scene(root,1280,720, Color.WHITE);

        TextArea Output=new TextArea();

        TextField Input=new TextField();

        String URL=getClass().getResource("sub.png").toString();

        Button Submit=new Button("Submit",new ImageView(URL));

        Text RunTime=new Text("运行时间：N/A");

        Text CpuLoad=new Text("CPU占用：N/A");

        Text MemoryLoad=new Text("内存占用：N/A");

        RunTime.setFont(Font.font("Microsoft JhengHei",24));

        CpuLoad.setFont(Font.font("Microsoft JhengHei",24));

        MemoryLoad.setFont(Font.font("Microsoft JhengHei",24));

        RunTime.setLayoutX(950);

        RunTime.setLayoutY(40);

        CpuLoad.setLayoutX(950);

        CpuLoad.setLayoutY(70);

        MemoryLoad.setLayoutX(950);

        MemoryLoad.setLayoutY(100);

        Output.setPrefRowCount(37);

        Output.setPrefWidth(900);

        Output.setPrefHeight(630);

        Output.setLayoutX(10);

        Output.setLayoutY(10);

        Input.setPrefWidth(850);

        Input.setLayoutX(10);

        Input.setLayoutY(650);

        Submit.setLayoutX(870);

        Submit.setLayoutY(650);

        root.getChildren().addAll(Output,Input,Submit,RunTime,CpuLoad,MemoryLoad);

        primaryStage.setScene(scene);

        primaryStage.show();

        primaryStage.setWidth(1280);

        primaryStage.setHeight(720);

        Process StartServer=Runtime.getRuntime().exec("cmd /c java -Xmx1024M -Dlog4j.skipJansi=true -jar Server.jar nogui");

        Submit.setOnAction(new EventHandler<ActionEvent>() {

            @Override

            public void handle(ActionEvent event) {

                try {

                    String cmd=Input.getText();

                    Input.clear();

                    Output.appendText(cmd);

                    OutputStreamWriter OSW=new OutputStreamWriter(StartServer.getOutputStream());

                    BufferedWriter Writer=new BufferedWriter(OSW);

                    Writer.write(cmd);

                    Writer.close();

                    OSW.close();

                 } catch (IOException e) {

                    e.printStackTrace();

                }

            }

        });

        Task<Void> GetRuntime=new Task<Void>() {

            @Override

            protected Void call() throws Exception {

                OperatingSystemMXBean OSMB=(OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();

                for (int i=1;i>0;i++){

                    RunTime.setText("运行时间： "+i+" 秒");

                    double CPULOAD=OSMB.getSystemCpuLoad();

                    int CPULOADVALUE=(int)(CPULOAD*100);

                    String CPUUSE=String.valueOf(CPULOADVALUE);

                    CpuLoad.setText("CPU使用率："+CPUUSE+" %");

                    double MAXVMMEMORY=OSMB.getTotalPhysicalMemorySize();

                    double FREEVMMEMORY=OSMB.getFreePhysicalMemorySize();

                    double USEDVMMEMORY=MAXVMMEMORY-FREEVMMEMORY;

                    USEDVMMEMORY=USEDVMMEMORY/MAXVMMEMORY;

                    int VMMEMORYLOAD=(int)(USEDVMMEMORY*100);

                    String MEMORYUSE=String.valueOf(VMMEMORYLOAD);

                    MemoryLoad.setText("内存占用："+MEMORYUSE+" %");

                    Thread.sleep(1000);

                }

                return null;

            }

        };

        new Thread(GetRuntime).start();

        Task<Void> PrintServerMessage=new Task<Void>() {

            @Override

            protected Void call() throws IOException {

                BufferedReader getInput= new BufferedReader(new InputStreamReader(StartServer.getInputStream()));

                String Buffer;

                while ((Buffer=getInput.readLine())!= null){

                    Output.appendText(Buffer+"\n");

                    System.out.println(Buffer+"\n");

                }

                getInput.close();

                return null;

            }

        };

        new Thread(PrintServerMessage).start();

    }

}

...全文
【Spring】数据导出为Excel的接口报java.io.IOException: UT010029: Stream is closed错误 文件下载接口不能有返回值。。。。。。。。。。因为接口被调用后`response`会自动关闭`ServletOutputStream`,而return时会再次自动关闭`OutputStream`，就会导致Stream is closed 阅读详情

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