java线程通信-等待通知:通过管道进行线程通信

末蓝、 2022-03-06 01:46 271阅读 0赞

核心:  
PipedInputStream  
PipedOutputStream  
PipedReader  
PipedWriter  
通过下面的方式进行管道连接.读取数据  
PipedInputStream.connet(PipedOutputStream)

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3k0MTk5MjkxMA_size_16_color_FFFFFF_t_70]

package com.hgh.java_duoxiancheng.ch3_1.p12;
    
    import java.io.PipedOutputStream;
    
    public class WriteData {
    
    	public void write(PipedOutputStream pipedOutputStream){
    		try {
    			System.out.println("write:");
    			for(int i = 0 ; i< 300 ; i ++){
    				String outData =  "" + (i + 1);
    				pipedOutputStream.write(outData.getBytes());
    				System.out.println(outData);
    			}
    			System.out.println();
    			pipedOutputStream.close();
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    	}
    }

package com.hgh.java_duoxiancheng.ch3_1.p12;
    
    import java.io.IOException;
    import java.io.PipedInputStream;
    
    public class ReadData {
    
    	public void read(PipedInputStream pipedInputStream){
    		try {
    			System.out.println("read start");
    		byte[] data = new byte[20];
    		int len = -1;
    			while((len = pipedInputStream.read(data)) != -1){
    				String str = new String(data, 0, len);
    				System.out.println(str);
    			}
    			pipedInputStream.close();
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    	}
    }

package com.hgh.java_duoxiancheng.ch3_1.p12;
    
    import java.io.PipedOutputStream;
    
    public class ThreadWrite extends Thread{
    
    	private WriteData writeData;
    	private PipedOutputStream pipedOutputStream;
    	ThreadWrite(WriteData writeData,PipedOutputStream pipedOutputStream){
    		this.writeData = writeData;
    		this.pipedOutputStream = pipedOutputStream;
    	}
    	
    	@Override
    	public void run() {
    		writeData.write(pipedOutputStream);
    	}
    }

package com.hgh.java_duoxiancheng.ch3_1.p12;
    
    import java.io.PipedInputStream;
    
    public class ThreadRead extends Thread{
    
    	private ReadData readData;
    	private PipedInputStream pipedInputStream;
    	ThreadRead(ReadData readData,PipedInputStream pipedInputStream){
    		this.readData = readData;
    		this.pipedInputStream = pipedInputStream;
    	}
    	
    	@Override
    	public void run() {
    		readData.read(pipedInputStream);
    	}
    }

package com.hgh.java_duoxiancheng.ch3_1.p12;
    
    import java.io.IOException;
    import java.io.PipedInputStream;
    import java.io.PipedOutputStream;
    
    public class Run {
    
    	public static void main(String[] args) {
    		ReadData readData = new ReadData();
    		WriteData writeData = new WriteData();
    		PipedInputStream pipedInputStream = new PipedInputStream();
    		PipedOutputStream pipedOutputStream = new PipedOutputStream();
    		try {
    			pipedInputStream.connect(pipedOutputStream);
    			ThreadRead threadRead = new ThreadRead(readData, pipedInputStream);
    			ThreadWrite threadWrite = new ThreadWrite(writeData, pipedOutputStream);
    			threadRead.start();
    			threadWrite.start();
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    		
    	}
    }

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