UDP进行分词服务器的设计

1.基本思路：远程client发送原始句子到server端，然后服务器进行分词并发送回客户端，客户端进行回显。分词采用ICTCLAS

2.server端代码：

/* * ===================================================================================== * * Filename: udp_server.c * * Description: * * Version: 1.0 * Created: 2010年12月17日 10时43分28秒 * Revision: none * Compiler: gcc * * Author: QiBaoyuan (Baobao), [e-mail] * Company: ICT * * ===================================================================================== */#include <stdlib.h>#include <stdio.h>#include <errno.h>#include <string.h>#include <unistd.h>#include <netdb.h>#include <sys/socket.h>#include <netinet/in.h>#include <sys/types.h>#include <arpa/inet.h>#include <string>using namespace std;#include "converter.h"#ifdef OS_LINUX#define _stricmp strcasecmp#endif#include "ICTCLAS30.h"#define SERVER_PORT 6345#define MAX_MSG_SIZE 1024voidudps_respon (int sockfd){ struct sockaddr_in addr; int n; socklen_t addrlen; char msg[MAX_MSG_SIZE]; char result[3*MAX_MSG_SIZE]={0}; char u_result[3*MAX_MSG_SIZE]; string sResult; if(!ICTCLAS_Init()) {printf("ICTCLAS INIT FAILED!/n");//system("pause"); } while (1) {/* 从网络上读,写到网络上面去 */ memset (msg, 0, sizeof (msg)); memset(result,0,sizeof(result)); memset(u_result,0,sizeof(u_result)); addrlen = sizeof (struct sockaddr); n = recvfrom (sockfd, msg, MAX_MSG_SIZE, 0, (struct sockaddr *) &addr, &addrlen); /* 显示服务端已经收到了信息 */ fprintf (stdout, "I have received:%s", msg); /*将utf8转化为gbk*/ u2g(msg,n,result,sizeof(result)); /*调用ictclas*/ sResult=ICTCLAS_ParagraphProcess(result); /*gbk转为utf8*/ g2u((char*)sResult.c_str(),strlen(sResult.c_str())+1,u_result,sizeof(u_result)); fprintf(stdout,"result is %s/n",u_result); sendto (sockfd, u_result, sizeof(u_result), 0, (struct sockaddr *) &addr, addrlen); } ICTCLAS_Exit();}intmain (void){ int sockfd; struct sockaddr_in addr; sockfd = socket (AF_INET, SOCK_DGRAM, 0); if (sockfd < 0) { fprintf (stderr, "Socket Error:%s/n", strerror (errno)); exit (1); } bzero (&addr, sizeof (struct sockaddr_in)); addr.sin_family = AF_INET; addr.sin_addr.s_addr = htonl (INADDR_ANY); addr.sin_port = htons (SERVER_PORT); if (bind (sockfd, (struct sockaddr *) &addr, sizeof (struct sockaddr_in)) < 0) { fprintf (stderr, "Bind Error:%s/n", strerror (errno)); exit (1); } udps_respon (sockfd); close (sockfd);} 

2.client端代码：

/* * ===================================================================================== * * Filename: udp_client.c * * Description: * * Version: 1.0 * Created: 2010年12月17日 10时44分14秒 * Revision: none * Compiler: gcc * * Author: QiBaoyuan (Baobao), [e-mail] * Company: ICT * * ===================================================================================== */#include <stdlib.h>#include <stdio.h>#include <errno.h>#include <string.h>#include <unistd.h>#include <netdb.h>#include <sys/socket.h>#include <netinet/in.h>#include <sys/types.h>#include <arpa/inet.h>#define MAX_BUF_SIZE 1024voidudpc_requ (int sockfd, const struct sockaddr_in *addr, socklen_t len){ char buffer[MAX_BUF_SIZE]; int n; while (fgets (buffer, MAX_BUF_SIZE, stdin)) {/* 从键盘读入,写到服务端 */ sendto (sockfd, buffer, strlen (buffer), 0, (struct sockaddr *)addr, len); bzero (buffer, MAX_BUF_SIZE); /* 从网络上读,写到屏幕上 */ memset (buffer, 0, sizeof (buffer)); n = recvfrom (sockfd, buffer, MAX_BUF_SIZE, 0, NULL, NULL); if (n <= 0){ fprintf (stderr, "Recv Error %s/n", strerror (errno)); return;} buffer[n] = 0; fprintf (stderr, "get %s", buffer); }}intmain (int argc, char **argv){ int sockfd, port; struct sockaddr_in addr; if (argc != 3) { fprintf (stderr, "Usage:%s server_ip server_port/n", argv[0]); exit (1); } if ((port = atoi (argv[2])) < 0) { fprintf (stderr, "Usage:%s server_ip server_port/n", argv[0]); exit (1); } sockfd = socket (AF_INET, SOCK_DGRAM, 0); if (sockfd < 0) { fprintf (stderr, "Socket Error:%s/n", strerror (errno)); exit (1); } /* 填充服务端的资料 */ bzero (&addr, sizeof (struct sockaddr_in)); addr.sin_family = AF_INET; addr.sin_port = htons (port); if (inet_aton (argv[1], &addr.sin_addr) < 0) { fprintf (stderr, "Ip error:%s/n", strerror (errno)); exit (1); } if (connect (sockfd, (struct sockaddr *) &addr, sizeof (struct sockaddr_in)) == -1) { fprintf (stderr, "connect error %s/n", strerror (errno)); exit (1); } udpc_requ (sockfd, &addr, sizeof (struct sockaddr_in)); close (sockfd);} 

3.字符编码：

/* * ===================================================================================== * * Filename: converter.c * * Description: * * Version: 1.0 * Created: 2010年12月17日 11时24分28秒 * Revision: none * Compiler: gcc * * Author: QiBaoyuan (Baobao), [e-mail] * Company: ICT * * ===================================================================================== */#include <iconv.h>#include <string.h>#include <stdio.h>#include <stdlib.h>#include "converter.h"intcode_convert(char* from_charset,char* to_charset,char* inbuf,int inlen,char* outbuf,int outlen){iconv_t cd;char **pin=&inbuf;char **pout=&outbuf;cd=iconv_open(to_charset,from_charset);if(cd==0)return -1;memset(outbuf,0,outlen);size_t in_buf =inlen;size_t out_buf=outlen;if(iconv(cd,pin,&in_buf,pout,&out_buf)==-1)return -1;iconv_close(cd);return 0;}intu2g(char* inbuf,int inlen,char* outbuf,int outlen){return code_convert((char*)"utf8",(char*)"gbk",inbuf,inlen,outbuf,outlen);}intg2u(char* inbuf,size_t inlen,char* outbuf,size_t outlen){return code_convert((char*)"gbk",(char*)"utf8",inbuf,inlen,outbuf,outlen);} 

4.Makefile:

all:server client udp_server udp_clientserver:server.cg++ server.c -L. -lICTCLAS30 -m32 -Wall -Wunused -O3 -DOS_LINUX -o serverclient:client.cg++ $^ -o $@udp_server:udp_server.c converter.hg++ udp_server.c converter.c -L. -lICTCLAS30 -M32 -Wall -Wunused -O3 -DOS_LINUX -o udp_serverudp_client:udp_client.ccc $^ -o $@clean:rm -f serverrm -f clientrm -f udp_serverrm -f udp_client 

5.显示：

服务器：

服务器：