Android网络编程之Socket方式上传对象序列化文件(服务器端)

服务器端分为两个类,主类与线程类,每有一个客户端连接,就新启动一个线程,这样就可以接收多个客户端的连接

主类:

初始化ServerSocket,并设定端口号 ---> 监听客户端连接,启动线程处理
 1 import java.io.IOException;
 2 import java.net.ServerSocket;
 3 
 4 public class UploadServer {
 5         private static boolean flag = true;
 6        
 7         public static void main(String[] args ) {
 8                try {
 9                      ServerSocket server = new ServerSocket(9999);
10                       while (flag) {
11                             // 每有一个客户端连接, 新起一个线程类处理,这样可以进行多客户端连接
12                             new Thread(new UploadThread(server.accept())).start();
13                      }
14               } catch (IOException e) {
15                      e.printStackTrace();
16               }
17               
18        }
19 }

线程类:

启动时实例化客户端Socket,并设定好服务器端储存文件路径 ---> 取得对象输入流(接收客户端数据),输出流(回应客户端)---> 调用saveFile()方法把接收到数据存到服务器端

 1 public class UploadThread implements Runnable {
 2 
 3         private Socket client = null;
 4         private File file = null;
 5         private UploadFile uploadFile = null;
 6        
 7         private String filePath = "D:" + File. separator + "Doc"
 8                                                               + File.separator + "Image"
 9                                                               + File.separator + "Pic" ;
10        
11         public UploadThread(Socket client) {
12                this.client = client;
13        }
14        
15         @Override
16         public void run() {
17                if (client .isConnected()) {
18                      System. out.println("connect!" );
19               }
20 
21                // 取得服务器端对象输入流,打印输出流
22               PrintStream ps = null;
23               ObjectInputStream ois = null;
24                try {
25                      ps = new PrintStream(client .getOutputStream());
26                      ois = new ObjectInputStream(client .getInputStream()); // 反序列化
27                      uploadFile = (UploadFile) ois.readObject(); // 读入客户端发送过来的对象序列
28                      
29 // 检测接收到的序列对象信息
30 System.out.println( "文件名: " + uploadFile.getTitle());
31 System.out.println( "文件类型: " + uploadFile.getMimeType());
32 System.out.println( "文件大小: " + uploadFile.getContentLength());
33 
34                       // 调用方法保存文件到本地路径
35                      ps.print(saveFile());
36               } catch (IOException e) {
37                      e.printStackTrace();
38               } catch (ClassNotFoundException e) {
39                      e.printStackTrace();
40               } finally {
41                       try {
42                             if (ois != null) {
43                                   ois.close();
44                                   ois = null;
45                            }
46                             if (ps != null) {
47                                   ps.close();
48                                   ps = null;
49                            }
50                      } catch (IOException e) {
51                            e.printStackTrace();
52                      }
53               }
54        }
 saveFile()方法:
检测路径是否存在 ---> 取得文件输出流输出
 1         private boolean saveFile() {
 2                // 设置服务器端接收文件路径(使用UUID类给出一个独一无二的文件名)
 3                file = new File(filePath + UUID. randomUUID() + "." + uploadFile.getExt());
 4                if (!file .getParentFile().exists()) {
 5                       file.mkdirs();
 6               }
 7               
 8                // 取得文件输出流
 9               FileOutputStream fos = null;
10                try {
11                      fos = new FileOutputStream(file );
12                      fos.write( uploadFile.getData());
13                       return true;
14               } catch (FileNotFoundException e) {
15                      e.printStackTrace();
16               } catch (IOException e) {
17                      e.printStackTrace();
18               } finally {
19                       try {
20                             if (fos != null) {
21                                   fos.close();
22                                   fos = null;
23                            }
24                      } catch (IOException e) {
25                            e.printStackTrace();
26                      }
27               }
28                return false;
29        }
30        
31 }
原文地址:https://www.cnblogs.com/moka/p/3062198.html