第十四章作业

第三题

    static String loadStream(InputStream in) throws IOException {        BufferedReader bufReader = new BufferedReader(new InputStreamReader(in));        String str = "", buf;        while((buf = bufReader.readLine()) != null){            str += buf;        }        in.close();        return str;    }

第四题

    static String toUppercase(String sour) throws IOException {        byte[] buf = sour.getBytes();        InputStream in = new ByteArrayInputStream(buf);        OutputStream out = new ByteArrayOutputStream();        int n = 0;        while ((n = in.read()) != -1) {            if (n >= 'a' && n <= 'z')                n -= 32;            out.write(n);        }        return out.toString();    }

第五题

    public static String loadFile(String fileName) throws IOException {        BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(fileName)));        String out = "", buf;        while((buf = in.readLine()) != null){            out += buf + "\n";        }        in.close();        return out;    }

第六题

    public static boolean saveFile(String fileName, String contents) {        boolean saved = false;        try {            BufferedWriter os = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(fileName)));            os.write(contents);            os.close();            saved = true;        } catch (IOException e) {            e.printStackTrace();        }        return saved;    }

第七题

import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.net.ServerSocket;import java.net.Socket;class MyServer{    ServerSocket server = null;    Socket socket = null;    public MyServer() {        try {            server = new ServerSocket(4700);            socket = server.accept();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }    public boolean saveData(String fileName) {        boolean saved = false;        try {            BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));            BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(fileName)));            String buf;            while((buf = in.readLine()) != null) {                out.write(buf);                out.newLine();            }            out.flush();            in.close();            out.close();            saved = true;        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return saved;    }    protected void finalize() throws Throwable {        super.finalize();        socket.close();        server.close();    }}public class Q_7 {    public static void main(String[] args) {        // TODO Auto-generated method stub        new MyServer().saveData("test.txt");    }}

测试客户端

import java.io.BufferedWriter;import java.io.IOException;import java.io.OutputStreamWriter;import java.net.Socket;public class TalkClient {    public static void main(String[] args) {        Socket socket = null;        try {            socket = new Socket("127.0.0.1", 4700);        } catch (IOException e) {            System.out.println("can't not listen to " + e);        }        try {            BufferedWriter out = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));            out.write("Monday\nTuesday\nWednesday\nThursday\nFriday\nSaturday\nSunday\n");            out.flush();            socket.close();        } catch (IOException e) {            e.printStackTrace();        }    }}

第八题

import java.io.File;import java.util.ArrayList;import java.util.List;public class Q_8 {    private static boolean fileMatch(String pattern, String fileName) {        int fileNameIndex = 0;        int fileNameLength = fileName.length();        for(int patternIndex = 0; patternIndex < pattern.length(); ++patternIndex) {            char ch = pattern.charAt(patternIndex);            if(ch == '*') {                while(fileNameIndex < fileNameLength) {                    if(fileMatch(pattern.substring(patternIndex + 1), fileName.substring(fileNameIndex)))                        return true;                    ++fileNameIndex;                }            }else if(ch == '?') {                for(int i = 0; i < 2; ++i) {                    if(fileNameIndex < fileNameLength) {                        if(fileMatch(pattern.substring(patternIndex + 1), fileName.substring(fileNameIndex)))                            return true;                    }                    ++fileNameIndex;                }            }else {                if(fileNameIndex >= fileNameLength || ch != fileName.charAt(fileNameIndex))                    return false;                ++fileNameIndex;            }        }        return (fileNameIndex == fileNameLength);    }    public static void findFile(String path, String fileName, List<File> fileList) {        File dir = new File(path);        if(!dir.exists() || !dir.isDirectory())            System.out.println("not find " + fileName);        File tempFile;        String tempName;        File[] files = dir.listFiles();        for(int i = 0; i < files.length; ++i) {            tempFile = files[i];            if(tempFile.isDirectory()) {                findFile(tempFile.getAbsolutePath(), fileName, fileList);            }else if(tempFile.isFile()) {                tempName = tempFile.getName();                if(fileMatch(fileName, tempName))                    fileList.add(tempFile.getAbsoluteFile());            }        }        if(fileList.isEmpty()) {            System.out.println("not find " + fileName);        }    }    public static void main(String[] args) {        // TODO Auto-generated method stub        String path = "D:/test/";        String fileName = "t?est*.txt";        List<File> fileList = new ArrayList<>();        findFile(path, fileName, fileList);        if(!fileList.isEmpty()) {            for(File file : fileList)                System.out.println(file.getAbsolutePath());        }    }}

十五章第六题

服务端

import java.io.IOException;import java.io.ObjectInputStream;import java.net.ServerSocket;import java.net.Socket;public class Ch15Q_6_server {    private ServerSocket server;    private Socket socket;    public Ch15Q_6_server() {        try {            server = new ServerSocket(4700);            socket = server.accept();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }    public void accept() {        try {            ObjectInputStream in = new ObjectInputStream(socket.getInputStream());            User u2 = (User) in.readObject();            System.out.println(u2.getName() + "  " + u2.getPassword());            in.close();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (ClassNotFoundException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }    protected void finalize() throws Throwable {        super.finalize();        socket.close();        server.close();    }    public static void main(String[] args) {        // TODO Auto-generated method stub        new Ch15Q_6_server().accept();    }}

客户端

import java.io.IOException;import java.io.ObjectOutputStream;import java.net.Socket;import java.net.UnknownHostException;public class Ch15Q_6_client {    private Socket socket = null;    public Ch15Q_6_client() {        try {            socket = new Socket("127.0.0.1", 4700);        } catch (UnknownHostException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }    public void send() {        try {            ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());            User u1 = new User();            u1.setName("zouxiaoqiang");            u1.setPassword("1234");            out.writeObject(u1);            out.flush();            out.close();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }    protected void finalize() throws Throwable {        super.finalize();        socket.close();    }    public static void main(String[] args) {        // TODO Auto-generated method stub        new Ch15Q_6_client().send();    }}