与上一篇不同，本篇添加了大数据处理，对数据库的操作（增删查改）
以下注释均为测试，可忽略
绿色为文件，蓝色为目录
这是整体的一个目录：
conf/server.conf:
IP:127.0.0.1 PORT:8080
htdocs/index.html:(数据库操作)
<html> <head> <h1>hello,this is database</h1> <h2>you can choose a operoter...</h2> </head> <body> <h2>INSERT</h2> <form action="mysql_connect/sql_api" method="POST"> name :<input type="text" name="name"/><br/> sex :<input type="text" name="sex"/><br/> age :<input type="text" name="age"/><br/> tel :<input type="text" name="tel"/><br/> school :<input type="text" name="school"/><br/> <input type="submit" value="insert"/><br/> </form> <h2>SELECT</h2> <h2>you can choose one or zero ...</h2> <form action="mysql_connect/sql_api" method="GET"> select_name :<input type="text" name="select_name"/><br/> select_sex :<input type="text" name="select_sex"/><br/> select_age :<input type="text" name="select_age"/><br/> select_tel :<input type="text" name="select_tel"/><br/> select_school :<input type="text" name="select_school"/><br/> select_id :<input type="text" name="select_id"/><br/> <input type="submit" value="select data"/><br/> </form> <h2>DELETE</h2> <h2>you can choose one or zero ...</h2> <form action="mysql_connect/sql_api" method="GET"> delete_name :<input type="text" name="delete_name"/><br/> delete_sex :<input type="text" name="delete_sex"/><br/> delete_age :<input type="text" name="delete_age"/><br/> delete_tel :<input type="text" name="delete_tel"/><br/> delete_school:<input type="text" name="delete_school"/><br/> delete_id :<input type="text" name="delete_id"/><br/> <input type="submit" value="delete"/><br/> </form> <h2>UPDATE</h2> <form action="mysql_connect/sql_api" method="GET"> updata_name :<input type="text" name="updata_name1"/> <input type="text" name="updata_name2"/><br/> updata_sex :<input type="text" name="updata_sex1"/> <input type="text" name="updata_sex1"/><br/> updata_age :<input type="text" name="updata_age"/> <input type="text" name="updata_age"/><br/> updata_tel :<input type="text" name="updata_tel"/> <input type="text" name="updata_tel"/><br/> updata_school:<input type="text" name="updata_school"/> <input type="text" name="updata_school"/><br/> <input type="submit" value="updata"/><br/> </form> <img src="10.jpg" alt="mantouheqi" dth="200" height="300"/> </body> </html>
htdocs/mysql_connect/main.cpp:
#include "sql_api.h"
void get_args(std::vector<std::string> &vec,std::string &op)
{
std::string method=getenv("METHOD");//getenv return NULL to string is error
std::string query_string;
std::string content_length;
char ch=‘a‘;
int index=0;
int ret=-1;
char buf[_SIZE_];
memset(buf,‘\0‘,sizeof(buf));
if(method=="POST"){//POST
std::string content_length=getenv("CONTENT_LENGTH");
int len=atoi(content_length.c_str());
memset(buf,‘\0‘,sizeof(buf));
while(len){//&& index<sizeof(buf)-1){
ret=read(0,&ch,1);
buf[index++]=ch;
len--;
}
if(len!=0){
printf("error!\n");
return;
}
}else{//GET
query_string=getenv("QUERY_STRING");
strcpy(buf,query_string.c_str());
index=query_string.size();
}
buf[index]=‘\0‘;
// std::cout<<buf<<std::endl;
if(strncmp(buf,"name",4)==0){
op="insert";
}else if(strncmp(buf,"select_name",11)==0){
op="select";
}else if(strncmp(buf,"delete_name",11)==0){
op="delete";
}else if(strncmp(buf,"updata_name",11)==0){
op="updata";
}
// std::cout<<op<<std::endl;
char *end=buf+index;
int incount=0;
while(end!=buf){
if(*end == ‘=‘){
vec.push_back(end+1);
}
if(*end == ‘&‘){
*end=‘\0‘;
}
end--;
}
}
void insert_echo_html()
{
std::cout<<"HTTP/1.1 200 OK\r\n\r\n";
std::cout<<"<html>"<<std::endl;
std::cout<<"<head>"<<std::endl;
std::cout<<"<h1>insert success!</h1>"<<std::endl;
std::cout<<"</head>"<<std::endl;
std::cout<<"</html>"<<std::endl;
}
void delete_echo_html()
{
std::cout<<"HTTP/1.1 200 OK\r\n\r\n";
std::cout<<"<html>"<<std::endl;
std::cout<<"<head>"<<std::endl;
std::cout<<"<h1>delete success!</h1>"<<std::endl;
std::cout<<"</head>"<<std::endl;
std::cout<<"</html>"<<std::endl;
}
void updata_echo_html()
{
std::cout<<"HTTP/1.1 200 OK\r\n\r\n";
std::cout<<"<html>"<<std::endl;
std::cout<<"<head>"<<std::endl;
std::cout<<"<h1>updata success!</h1>"<<std::endl;
std::cout<<"</head>"<<std::endl;
std::cout<<"</html>"<<std::endl;
}
void failed_echo_html()
{
std::cout<<"HTTP/1.1 200 OK\r\n\r\n";
std::cout<<"<html>"<<std::endl;
std::cout<<"<head>"<<std::endl;
std::cout<<"<h1>operator failed!Info Is Not Exit or Your Can Check Your Args...</h1>"<<std::endl;
std::cout<<"</head>"<<std::endl;
std::cout<<"</html>"<<std::endl;
}
int main()
{
std::vector<std::string> vec;
std::string op;
get_args(vec,op);
int vec_size=vec.size();
const char *name=vec[vec_size-1].c_str();
const char *sex=vec[vec_size-2].c_str();
const char *age=vec[vec_size-3].c_str();
const char *tel=vec[vec_size-4].c_str();
const char *school=vec[vec_size-5].c_str();
const char *id=vec[vec_size-6].c_str();
mysql_api sql;
//连接到MYSQL服务器
sql.mysql_connect_sql();
bool ret=false;
if(op=="insert"){
ret=sql.mysql_insert(name,sex,age,tel,school);
if(ret==true){
ret=false;
insert_echo_html();
}else{
failed_echo_html();
}
}else if(op=="select"){
ret=sql.mysql_select(id,name,sex,age,tel,school);
if(ret==true){
ret=false;
}else{
failed_echo_html();
}
}else if(op=="delete"){
// std::cout<<op<<std::endl;
ret=sql.mysql_delete(id,name,sex,age,tel,school);
if(ret==true){
ret=false;
delete_echo_html();
}else{
failed_echo_html();
}
}else if(op=="updata"){
const char *oldname=vec[vec_size-1].c_str();
const char *newname=vec[vec_size-2].c_str();
const char *oldsex=vec[vec_size-3].c_str();
const char *newsex=vec[vec_size-4].c_str();
const char *oldage=vec[vec_size-5].c_str();
const char *newage=vec[vec_size-6].c_str();
const char *oldtel=vec[vec_size-7].c_str();
const char *newtel=vec[vec_size-8].c_str();
const char *oldschool=vec[vec_size-9].c_str();
const char *newschool=vec[vec_size-10].c_str();
ret=sql.mysql_updata(oldname,newname,oldsex,newsex,oldage,newage,oldtel,newtel,oldschool,newschool);
if(ret==true){
ret=false;
updata_echo_html();
}else{
failed_echo_html();
}
}
sql.mysql_close_sql();
return 0;
}htdocs/mysql_connect/sql_api.h:
#include <iostream>
#include <string>
#include <vector>
#include <mysql.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#define _SIZE_ 2048
class mysql_api
{
public:
mysql_api();
void mysql_connect_sql();
bool mysql_select(std::string id="",std::string name="",std::string sex="",std::string age="",std::string tel="",std::string school="");
bool mysql_insert(std::string name,std::string sex,std::string age,std::string tel,std::string school);
bool mysql_delete(std::string id="",std::string name="",std::string sex="",std::string age="",std::string tel="",std::string school="");
bool mysql_updata(std::string oldname="",std::string newname="",std::string oldsex="",std::string newsex="",\ std::string oldage="",std::string newage="",std::string oldtel="",std::string newtel="",std::string oldschool="",std::string newschool="");
bool mysql_close_sql();
~mysql_api();
private:
bool _sql_op(std::string &sql_op);
bool _select_data();
private:
MYSQL mysql;
std::string host;
std::string user;
std::string passwd;
std::string db;
unsigned int port;
unsigned long client_flag;
};htdocs/mysql_connect/sql_api.cpp:
#include "sql_api.h"
mysql_api::mysql_api()
:host("127.0.0.1")
,user("root")
,passwd("密码")
,db("9_students")
,port(3306)
,client_flag(0)
{
//获得或初始化一个MYSQL结构
mysql_init(&mysql);
}
void mysql_api::mysql_connect_sql()
{
//连接到MYSQL服务器
mysql_real_connect(&mysql,host.c_str(),user.c_str(),passwd.c_str(),db.c_str(),port,NULL,0);
}
bool mysql_api::mysql_select(std::string id,std::string name,std::string sex,std::string age,std::string tel,std::string school)
{
//select 列名称 from 表名称 [查询条件];
std::string sql_op="select * from students where ";
if(name!=""){
sql_op.append("name=\"");
sql_op.append(name);
sql_op.append("\"");
}else if(sex!=""){
sql_op.append("sex=\"");
sql_op.append(sex);
sql_op.append("\"");
}else if(age!=""){
sql_op.append("age=");
sql_op.append(age);
}else if(tel!=""){
sql_op.append("tel=\"");
sql_op.append(tel);
sql_op.append("\"");
}else if(school!=""){
sql_op.append("school=\"");
sql_op.append(school);
sql_op.append("\"");
}else if(id!=""){
sql_op.append("id=");
sql_op.append(id);
}else{
sql_op="select * from students";
}
// std::cout<<sql_op<<std::endl;
if(_sql_op(sql_op)){
return _select_data();
}
}
bool mysql_api::mysql_insert(std::string name,std::string sex,std::string age,std::string tel=NULL,std::string school=NULL)
{
//insert [into] 表名 [(列名1, 列名2, 列名3, ...)] values (值1, 值2, 值3, ...);
//insert into students values(NULL, "王刚", "男", 20, "13811371377",NULL);
std::string sql_op;
sql_op="insert into students (name,sex,age,tel,school) values (\"";
sql_op.append(name);
sql_op.append("\",\"");
sql_op.append(sex);
sql_op.append("\",");
sql_op.append(age);
sql_op.append(",\"");
sql_op.append(tel);
sql_op.append("\",\"");
sql_op.append(school);
sql_op.append("\")");
// std::cout<<sql_op<<std::endl;
return _sql_op(sql_op);
}
bool mysql_api::mysql_delete(std::string id,std::string name,std::string sex,std::string age,std::string tel,std::string school)
{
//delete from 表名称 where 删除条件
//删除表中的所有数据: delete from students;
std::string sql_op="delete from students where ";
if(name!=""){
sql_op.append("name=\"");
sql_op.append(name);
sql_op.append("\"");
}else if(sex!=""){
sql_op.append("sex=\"");
sql_op.append(sex);
sql_op.append("\"");
}else if(age!=""){
sql_op.append("age=");
sql_op.append(age);
}else if(tel!=""){
sql_op.append("tel=\"");
sql_op.append("\"");
sql_op.append(tel);
}else if(school!=""){
sql_op.append("school=\"");
sql_op.append(school);
sql_op.append("\"");
}else if(id!=""){
sql_op.append("id=");
sql_op.append(id);
}
// std::cout<<sql_op<<std::endl;
if(sql_op=="delete from students where ")
return false;
return _sql_op(sql_op);
}
bool mysql_api::mysql_updata(std::string oldname,std::string newname,std::string oldsex,std::string newsex, std::string oldage,std::string newage,std::string oldtel,std::string newtel,std::string oldschool,std::string newschool)
{
//update 表名称 set 列名称=新值 where 更新条件;
// update students set age=19,tel="18829342744" where tel="6703" and school="xpu";
std::string sql_op;
std::string where;
bool ret=false;
sql_op="update students set " ;
where="where ";
if(oldname!=""){
where.append("name=\"");
where.append(oldname);
where.append("\"");
}
if(newname!=""){
sql_op.append("name=\"");
sql_op.append(newname);
sql_op.append("\"");
}
if(oldsex!=""){
if(where!="where ")
where.append(" and ");
where.append("sex=\"");
where.append(oldsex);
where.append("\"");
}
if(newsex!=""){
sql_op.append("sex=\"");
sql_op.append(newsex);
sql_op.append("\"");
}
if(oldage!=""){
if(where!="where ")
where.append(" and ");
where.append("age=");
where.append(oldage);
}
if(newage!=""){
sql_op.append("age=");
sql_op.append(newage);
}
if(oldtel!=""){
if(where!="where ")
where.append(" and ");
where.append("tel=\"");
where.append(oldtel);
where.append("\"");
}
if(newtel!=""){
sql_op.append("tel=\"");
sql_op.append(newtel);
sql_op.append("\"");
}
if(oldschool!=""){
if(where!="where ")
where.append(" and ");
where.append("school=\"");
where.append(oldschool);
where.append("\"");
}
if(newschool!=""){
sql_op.append("school=\"");
sql_op.append(newschool);
sql_op.append("\"");
}
sql_op.append(" ");
std::string res=sql_op+where;
// std::cout<<res<<std::endl;
return _sql_op(res);
}
bool mysql_api::mysql_close_sql()
{
//关闭与MySQL服务器的连接
mysql_close(&mysql);
}
mysql_api::~mysql_api()
{
}
bool mysql_api::_sql_op(std::string &sql_op)
{
// std::cout<<sql_op<<std::endl;
bool ret=false;
if(mysql_query(&mysql,sql_op.c_str())==0){
ret=true;
// std::cout<<ret<<std::endl;
}
return ret;
}
bool mysql_api::_select_data()
{
MYSQL_RES *ret=mysql_store_result(&mysql);
MYSQL_ROW row;
int num_fields=mysql_num_fields(ret);
std::cout<<"HTTP/1.1 200 OK\r\n\r\n";
std::cout<<"<html>"<<std::endl;
std::cout<<"<head>"<<std::endl;
std::cout<<"<h1>id name sex age tel school";
std::cout<<"</h1>"<<std::endl;
while ((row = mysql_fetch_row(ret)))
{
unsigned long *lengths;
lengths = mysql_fetch_lengths(ret);
std::cout<<"<h2>";
for(int i = 0; i < num_fields; i++)
{
printf("[%.*s] ", (int)lengths[i], row[i] ? row[i] : "NULL");
}
std::cout<<"</h2>"<<std::endl;
std::cout<<std::endl;
}
std::cout<<"</head>"<<std::endl;
std::cout<<"</html>"<<std::endl;
mysql_free_result(ret);
return true;
}htdocs/mysql_connect/Makefile:
ROOT_PATH=$(shell pwd)#shell是函数，它的参数是操作系统shell的命令，它和反引号的>功能是相同的，这就是说shell函数把执行操作系统命令后的输出作为函数返回值，这个函>数会生成一个shell程序来执行命令，所以要注意运行性能
#LINK=-I/home/chehlling/httpd/mysql_connect/mysql-clib/include -L/home/chehlling/httpd/mysql_connect/mysql-clib/lib -lmysqlclient -lpthread -lm -lrt -ldl
sql_api:main.cpp sql_api.cpp
g++ -o $@ $^ `${ROOT_PATH}/mysql-clib/bin/mysql_config --cflags --libs ` -lstdc++
.PHONY:clean
clean:
rm -f sql_api
.PHONY:output
output:sql_api
cp -f sql_api ../../output/htdocs/cgi_mysql/htdocs/index.html:(大数运算操作)
<html> <head> <h1>hello chehlling</h1> </head> <body> <hr/> <form action="cgi_bin/math_cgi" method="POST"> data1: <input type="text" name="data1"/><br/> data2: <input type="text" name="data2"/><br/> +: <input type="radio" name="op" value="ADD"><br/> -: <input type="radio" name="op" value="SUB"><br/> *: <input type="radio" name="op" value="MUL"><br/> /: <input type="radio" name="op" value="DIV"><br/> %: <input type="radio" name="op" value="MOD"><br/> <input type="submit" /><br/> </form> <hr/> <img src="20.jpg" alt="mantouheqi" dth="200" height="300"/> </body> </html>
htdocs/cgi_bin/math_cgi.cpp:
#include "bigdata.h"
#include <iostream>
#include <string>
#include <stdio.h>
#include <errno.h>
#include <vector>
#include <stdlib.h>
#include <string.h>
#define _SIZE_ 2048
void get_args(std::vector<std::string> &vec)
{
std::string method=getenv("METHOD");
std::string query_string;
std::string content_length;
char ch=‘a‘;
int index=0;
int ret=-1;
char buf[_SIZE_];
memset(buf,‘\0‘,sizeof(buf));
if(method=="POST"){//POST
std::string content_length=getenv("CONTENT_LENGTH");
int len=atoi(content_length.c_str());
memset(buf,‘\0‘,sizeof(buf));
while(len){//&& index<sizeof(buf)-1){
ret=read(0,&ch,1);
buf[index++]=ch;
len--;
}
if(len!=0){
printf("error!\n");
return;
}
}else{//GET
query_string=getenv("QUERY_STRING");
strcpy(buf,query_string.c_str());
index=query_string.size();
}
buf[index]=‘\0‘;
// std::cout<<buf<<std::endl;
int countin=0;
char *end=buf+index;
while(end!=buf){
if(*end == ‘=‘){
vec.push_back(end+1);
// std::cout<<vec[countin++]<<std::endl;
}
if(*end == ‘&‘){
*end=‘\0‘;
}
end--;
}
}
void echo_result(std::vector<std::string> &vec)
{
const char *op=vec[0].c_str();
BigData data1(vec[2].c_str());
BigData data2(vec[1].c_str());
// std::cout<<data1<<" "<<data2<<std::endl;
BigData sum;
char ch;
if( strcmp("ADD",op)==0 ){
sum=data1+data2;
ch=‘+‘;
}else if( strcmp("SUB",op)==0 ){
sum=data1-data2;
ch=‘-‘;
}else if( strcmp("MUL",op)==0 ){
sum=data1*data2;
ch=‘*‘;
}else if( strcmp("DIV",op)==0 ){
sum=data1/data2;
ch=‘/‘;
}else if( strcmp("MOD",op)==0 ){
sum=data1%data2;
ch=‘%‘;
}else{
return;
}
std::cout<<"HTTP/1.1 200 OK\r\n\r\n";
std::cout<<"<html>"<<std::endl;
std::cout<<"<head>"<<std::endl;
std::cout<<" ";
std::cout<<"<h1>math_cgi ";
std::cout<<op <<"</h1>"<<std::endl;
std::cout<<"</head>"<<std::endl;
std::cout<<"<body>"<<std::endl;
std::cout<<data1<<ch<<data2<<"="<<sum<<std::endl;
std::cout<<"</body>"<<std::endl;
std::cout<<"</html>"<<std::endl;
}
int main(int argc,char *argv[])
{
std::vector<std::string> vec;
get_args(vec);//reverse store args
echo_result(vec);
return 0;
}htdocs/cgi_bin/bigadata.h:
#ifndef BIG_DATA_H
#define BIG_DATA_H
#include <string>
#include <string.h>
#include <iostream>
#include <cassert>
#define UN_INIT 0xccccccccccccccccll
#define MAX_INT64 0x7fffffffffffffffll
#define MIN_INT64 0x8000000000000000ll
typedef long long INT64;
class BigData
{
public:
BigData(INT64 data = UN_INIT);
BigData(const char *pData);
BigData operator+(BigData& bigData);
BigData operator-(const BigData& bigData);
BigData operator*(const BigData& bigData);
BigData operator/(const BigData& bigData);
BigData operator%(const BigData& bigData);
//=======================================
bool operator<(const BigData& bigData);
bool operator>(const BigData& bigData);
bool operator==(const BigData& bigData);
std::ostream& operator<<(std::ostream& _cout);
friend std::ostream& operator<<(std::ostream& _cout, const BigData& bigData);
friend std::istream& operator>>(std::istream& _cin, BigData bigData);
private:
std::string Add(std::string left, std::string right);
std::string Sub(std::string left, std::string right);
std::string Mul(std::string left, std::string right);
std::string Div(std::string left, std::string right);
void INT64ToString();
bool IsINT64Owerflow()const;
bool IsLeftStrBig(char *pLeft, size_t LSize, char *pRight, size_t RSize);
char SubLoop(char *pLeft, size_t LSize, char *pRight, size_t RSize);
private:
long long m_llValue;
std::string m_strData;
};
#endifhtdocs/cgi_bin/bigadata.cpp:
略
htdocs/cgi_bin/Makefile:
math_cgi:math_cgi.cpp bigdata.cpp g++ -o $@ $^ -lstdc++ .PHONY:clean clean: rm -rf math_cgi .PHONY:output output:math_cgi cp -f math_cgi ../../output/htdocs/cgi_bin/
httpd.c httpd.h main.c 这三个文件和上一篇一样
Makefile
ROOT_PATH=$(shell pwd) LDFLAGS=-lpthread FLAGS=#-D_DEBUG_#-g CC=gcc BIN=httpd SRC=$(shell ls *.c) OBJ=$(SRC:.c=.o) CGI_BIN=htdocs/cgi_bin MYSQL_CONNECT=htdocs/mysql_connect .PHONY:all all:$(BIN) cgi $(BIN):$(OBJ) @echo "Linking [$^] to [$@]" @$(CC) -o $@ $^ $(LDFLAGS) @echo "Linking done..." %.o:%.c @echo "Compling [$<] to [$@]" @$(CC) -c $< -D_V2_ $(FLAGS) @echo "Compling done..." .PHONY:cgi cgi: @for name in `echo $(CGI_BIN)`; do cd $$name; make; cd -; done @for name in `echo $(MYSQL_CONNECT)`; do cd $$name; make; cd -; done .PHONY:clean clean: @rm -rf *.o $(BIN) output @for name in `echo $(CGI_BIN)`; do cd $$name; make clean; cd -; done @for name in `echo $(MYSQL_CONNECT)`; do cd $$name; make clean; cd -; done .PHONY:output output:$(BIN) cgi @mkdir -p output/log @cp -rf htdocs output/ @mkdir -p output/htdocs/cgi_bin @cp -f httpd output/ @cp -f start.sh output/ @cp -rf conf output/ @mkdir -p output/htdocs/cgi_mysql @for name in `echo $(CGI_BIN)`;\ do cd $$name; make output; cd -; done @for name in `echo $(MYSQL_CONNECT)`; do cd $$name; make output; cd -; done
start.sh
#! /bin/bash
ROOT_PATH=$(pwd)
conf=$ROOT_PATH/conf/server.conf
ser=$ROOT_PATH/httpd
ip=$(grep -E "^IP:" $conf |awk -F: ‘{print $NF}‘)
port=$(grep -E "^PORT:" $conf | awk -F: ‘{print $NF}‘)
$ser $ip $port运行结果：
插入：
查询：
删除：
更新：
发布之后output的目录下：
《完》
本文出自 “零蛋蛋” 博客，谢绝转载！
原文地址：http://lingdandan.blog.51cto.com/10697032/1795558
