Bio编程复习

gradlew

@@ -1,21 +1,5 @@
 #!/usr/bin/env sh
 
-#
-# Copyright 2015 the original author or authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
 ##############################################################################
 ##
 ##  Gradle start up script for UN*X
@@ -44,7 +28,7 @@ APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+DEFAULT_JVM_OPTS='"-Xmx64m"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
@@ -82,7 +66,6 @@ esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
-
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
@@ -126,11 +109,10 @@ if $darwin; then
     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
 fi
 
-# For Cygwin or MSYS, switch paths to Windows format before running java
-if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
-    
     JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
@@ -156,19 +138,19 @@ if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
         else
             eval `echo args$i`="\"$arg\""
         fi
-        i=`expr $i + 1`
+        i=$((i+1))
     done
     case $i in
-        0) set -- ;;
-        1) set -- "$args0" ;;
-        2) set -- "$args0" "$args1" ;;
-        3) set -- "$args0" "$args1" "$args2" ;;
-        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
     esac
 fi
 
@@ -177,9 +159,14 @@ save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }
-APP_ARGS=`save "$@"`
+APP_ARGS=$(save "$@")
 
 # Collect all arguments for the java command, following the shell quoting and substitution rules
 eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
 
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
 exec "$JAVACMD" "$@"

gradlew.bat

@@ -1,19 +1,3 @@
-@rem
-@rem Copyright 2015 the original author or authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem      https://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-@rem
-
 @if "%DEBUG%" == "" @echo off
 @rem ##########################################################################
 @rem
@@ -29,11 +13,8 @@ if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
-@rem Resolve any "." and ".." in APP_HOME to make it shorter.
-for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
-
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+set DEFAULT_JVM_OPTS="-Xmx64m"
 
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
@@ -84,7 +65,6 @@ set CMD_LINE_ARGS=%*
 
 set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
-
 @rem Execute Gradle
 "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
 

src/main/java/com/msb/io/bio/BioClient.java

@@ -0,0 +1,56 @@
+package com.msb.io.bio;
+
+import jdk.internal.util.xml.impl.Input;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
+
+/**
+ * @Author bingor
+ * @Date 2023-05-05 22:27
+ * @Description: com.msb.io.bio
+ * @Version: 1.0
+ */
+public class BioClient {
+
+    public static void main(String[] args) {
+
+        Socket socket = null;
+        OutputStream outputStream = null;
+        InputStream inputStream = null;
+
+        try {
+            socket = new Socket("127.0.0.1", 8888);
+            outputStream = socket.getOutputStream();
+            outputStream.write("服务端，你好，我是小袁".getBytes());
+
+            byte [] bytes = new byte[1024];
+            inputStream = socket.getInputStream();
+            int len = inputStream.read(bytes);
+            String msg = new String(bytes, 0, len);
+            System.out.println("客户端接收到的消息：" + msg);
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        } finally {
+
+            try {
+                if(socket != null) {
+                    socket.close();
+                }
+                if(outputStream != null) {
+                    outputStream.close();
+                }
+                if(inputStream != null) {
+                    inputStream.close();
+                }
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+
+        }
+    }
+
+}

src/main/java/com/msb/io/bio/BioServer.java

@@ -0,0 +1,60 @@
+package com.msb.io.bio;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.InetSocketAddress;
+import java.net.ServerSocket;
+import java.net.Socket;
+
+/**
+ * @Author bingor
+ * @Date 2023-05-05 22:10
+ * @Description: com.msb.io.bio
+ * @Version: 1.0
+ */
+public class BioServer {
+
+    public static void main(String[] args) {
+
+        ServerSocket serverSocket = null;
+
+        try {
+
+            serverSocket = new ServerSocket();
+            serverSocket.bind(new InetSocketAddress("127.0.0.1", 8888));
+
+            while (true) {
+                Socket socket = serverSocket.accept();
+                InputStream inputStream = socket.getInputStream();
+                byte[] bytes = new byte[1024];
+                int len = inputStream.read(bytes);
+                String msg = new String(bytes, 0, len);
+                System.out.println("服务端接收到客户端的信息：" + msg);
+
+                OutputStream outputStream = socket.getOutputStream();
+                outputStream.write("客户端，你好！".getBytes());
+                outputStream.flush();
+
+                outputStream.close();
+                inputStream.close();
+                socket.close();
+            }
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        } finally {
+
+            if(serverSocket != null) {
+                try {
+                    serverSocket.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+
+        }
+
+    }
+
+}