nginx if 与判断


在Nginx配置文件中,可以使用`if`指令进行条件判断。以下是一个简单的示例: ``` http { server { listen 80; server_name example.com; location / { if ($http_user_agent ~* "iphone") { # 如果用户代理包含"iphone",则重定向到苹果应用商店 return 301 https://apps.apple.com/app/id123456789; } if ($http_user_agent ~* "android") { # 如果用户代理包含"android",则重定向到谷歌应用商店 return 301 https://play.google.com/store/apps/details?id=com.example.app; } # 其他情况下,正常处理请求 proxy_pass http://backend; } } } ``` 在这个示例中,我们根据用户代理信息(`$http_user_agent`变量)来判断设备类型,并根据不同设备类型重定向到不同的应用商店。如果用户代理既不包含"iphone"也不包含"android",则将请求转发到后端服务器(`proxy_pass http://backend;`)。 [2024-07-17 15:12:11 | AI写代码神器 | 283点数解答]
- 如下语句对应的ir表示是下列哪项 int a = 8; if(a>6){ } a %a = alloca i32, align 4 store i32 8, i32* %a, align 4 %cmp = icmp sgt i32 %a, 6 br i1 %cmp, label %if.then, label %if.end b %a = alloca i32, align 4 store i32 8, i32* %a, align 4 %cmp = icmp sgt i32 %a, 6 if i1 %cmp, label %if.then, label %if.end c %a = alloca i32, align 4 store i32 8, i32* %a, align 4 %0 = load i32, i32* %a, align 4 %cmp = icmp slt i32 %0, 6 if i1 %cmp, label %if.then, label %if.end d %a =(575点数解答 | 2024-12-18 18:40:35)159
- 画出程序流程图 #include<stdio.h> int main() { int t,a,b,c,d; printf("请输入4个数:"); scanf("%d,%d,%d,%d",&a,&b,&c,&d); if (a > b) { t = a; a = b; b = t; } if (a > c) { t = a; a = c; c = t; } if (a > d) { t = a; a = d; d = t; } if (b > c) { t = b; b = c; c = t; } if (b > d) { t = b; b = d; d = t; } if (c > d) { t = c; c = d; d = t; } printf("由小到大输出:%d %d %d %d\n",a,b,c,d); return 0; }(318点数解答 | 2024-10-28 14:57:08)168
- 下面代码修改 繁体字编码 // 验证人物名字是否合法的函数 const char* ccreaterolemanager::verifynamevalidity(const char* name) { dword i = 0; while (name[i] != 0 && i<strlen(name) && i<12) { byte a = name[i]; if (a<0x80)//asc码 { if (a == '*') return "名称内包含遮蔽字符表中相关字符:该用户名不可用!"; if (!((a >= '0' && a <= '9') || (a >= 'a' && a <= 'z') || (a >= 'a' && a <= 'z'))) return "有非法字符:仅可使用汉字,数字"; if ((a >= 'a' && a <= 'z') || (a >= 'a' && a <= 'z')) return "有非法字符:仅可使用汉字,数字"; } else//汉字 { if (!(i(325点数解答 | 2024-10-21 18:57:01)158
- #define _crt_secure_no_warnings #include <stdio.h> #include <stdlib.h> #include<time.h> int game(char result) { int rn, num; int count = 1; srand((unsigned int)time(null)); for (int i = 0;i<1000 ; i++) { rn = rand(); if ((rn <= 100) && (rn >= 1)) { i = 1001; } } for (int i = 0; i < 7; i++) { num = scanf("%d", &num); if (num == rn) { printf("你赢了,一共猜了%d次", count); i = 7; } else if (num > rn) { printf("你猜错了,猜的偏大"); count++; } else if (num < rn) { printf("你猜错了,猜的偏小"); count++; } if (count == 6(403点数解答 | 2024-11-01 12:03:29)210
- #include <bits/stdc++.h> using namespace std; int hui(int n){ int k, m , sum=0; for(int i=1;i<=n;i++){ k=i; m=0; while(k){ m=m*10+k%10; k=k/10; } if(i==m) sum++; } return sum; bool zhi(long long a) { if (a <= 1) return false; if (a == 2 || a == 3) return true; if (a % 2 == 0 || a % 3 == 0) return false; long long i = 5; while (i * i <= a) { if (a % i == 0 || a % (i + 2) == 0) return false; i += 6; } return true; } } int main(){(298点数解答 | 2025-01-25 21:27:32)206
- skill={ audio:2, mod:{ aiOrder(player, card, num) { if (num <= 0 || !player.isPhaseUsing() || player.needsToDiscard() < 2) return num; let suit = get.suit(card, player); if (suit === "heart") return num - 3.6; }, aiValue(player, card, num) { if (num <= 0) return num; let suit = get.suit(card, player); if (suit === "heart") return num + 3.6; if (suit === "club") return num + 1; (199点数解答 | 2025-05-07 17:49:43)160
- if (c > 0) { result += " point"; int h = c / 10; int j = c % 10; result += " " + translate(h); result += " " + translate(j); } return result; }string translate(int n) { if (n < 21) { return word1[n]; } else if (n < 100) { return ten[n / 10] + (n % 10 ? " " + one[n % 10] : ""); } else if (n < 400) { return hund[n / 100] + (n % 100 ? "and " + ten[(n %100-n%10)/10] +" "+one[n % 10] : ""); } }的意思(800点数解答 | 2024-05-24 11:14:20)248
- jingyu: { audio: 2, trigger: { global: ["useskill", "logskillbegin", "usecard", "respond"], }, filter(event, player) { if (["global", "equip"].includes(event.type)) return false; let skill = event.sourceskill || event.skill; if (!skill || skill === "jingyu") return false; let info = get.info(skill); while (true) { if (!info || info.charlotte || info.equipskill) return false; if (info && !info.sourceskill) break; skill = info.sourceskill; info = get.info((15点数解答 | 2024-06-06 17:40:23)253
- #include<stdio.h> int main() { int x; float cost; scanf("%d",&x); if(x<0) { printf("invalid value!"); } if(x<50) { cost=0.53*x; printf("cost = %.2f",cost); } if(x=50) { printf("cost = 26.50"); } if(x>50) { cost=(x-50)*0.58+26.50; printf("cost = %.2f",cost); } return 0; }(242点数解答 | 2024-11-05 09:31:52)152
- def is_valid_position(n, m, x, y): if x <0 or x >= n or y < 0 or y >= m: return false return true def dfs(n, m, x, y, visited): directions = [(1, 2), (1, -2), (-1, 2), (-1, -2), (2,1), (2, -1), (-2, 1), (-2, -1)] visited[x][y] = true count = 0 for dx, dy in directions: new_x, new_y = x + dx, y + dy if is_valid_position(n, m, new_x, new_y) and not visited[new_x][new_y]: count += dfs(n, m, new_x, new_y, visited) visited[x][y] = false if count == 0: return1 if all(visited[i][j] for i in range(n) f(50点数解答 | 2024-11-18 19:36:52)135
- 请分析以下代码 #include "chessai.h" chessai::chessai() { init_tuple6type(); qdebug()<<"初始化ai"; } bool chessai::checkbound(int x,int y){ if(x>=0&&x<15&&y>=0&&y<15)return true; else return false; } qpoint chessai::getxy(int row, int col, int dir, int rel){ qpoint p; if(dir==right){ p.setx(row); p.sety(col+rel); }else if(dir==up){ p.setx(row-rel); p.sety(col); }else if(dir==upright){ p.setx(row-rel); p.sety(col+rel); }el(641点数解答 | 2024-12-15 00:07:56)124
- #include<stdio.h> void get_char(); int position(char ch); int main() { get_char(); return 0; } void get_char() { char ch; printf("请输入字符:"); while((ch=getchar())!=EOF) { if((ch=getchar())=='\n') { continue; } if((ch=getchar())!=-1) { printf("%c在字母表中的位置是%d\n",ch,position(ch)); } else printf("%c不是字母表中的",ch); } } int position(char ch) { if(ch>='A'&&ch<='Z') return ch-'A'+1; if(ch>='a'&&ch<='z') return ch-'a'+1; else return -1; } 查错 (519点数解答 | 2025-02-07 12:41:36)125