我在EC2实例的端口8983上运行solr.但是我无法在浏览器中使用以下命令打开solr界面:
http://public-dns:8983
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我也试过用:
http://ip.of.ec2.instance:8983
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但是他们没有工作.
如何在网络浏览器上打开它?
我正在尝试使用strtok().以下是我写的一段代码.它不起作用,但", '"无限打印.
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int main(){
char str[]="this, by the way, is a 'sample'";
char *tokens;
tokens = strtok(str, ", '");
//printf("%s\n",tokens);
//printf("%s\n", str);
while(tokens!=NULL)
{
printf("%s\n", tokens);
tokens = (NULL, ", '");
}
return 0;
}
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以下是strtok()手册页中的代码,完全正常.
#include <stdio.h>
#include <string.h>
int main ()
{
char str[] ="- This, a sample string.";
char * pch;
printf ("Splitting string \"%s\" into tokens:\n",str);
pch = strtok (str," ,.-");
while (pch != NULL)
{
printf …Run Code Online (Sandbox Code Playgroud) 我有一个以下形式的字符串:
"[{'status': 'Unshipped', 'city': 'New Delhi', 'buyer_name': 'xxx', 'name': 'xxx', 'countryCode': 'IN', 'payment_method': 'COD', 'y_id': 'xxx', 'phone': 'xxx', 'state': 'New Delhi', 'service': 'Expedited', 'amout': '425.00', 'address_1': 'xxx', 'address_2': 'xxx', 'postalCode': '110018', 'shipped_by_y': 'false', 'channel': 'MFN', 'order_type': 'StandardOrder'}, {'status': 'Unshipped', 'city': 'thane', 'buyer_name': 'xxx', 'name': 'xxx', 'countryCode': 'IN', 'payment_method': 'COD', 'y_id': 'xxx', 'phone': 'xxx', 'state': 'Maharashtra', 'service': 'Expedited', 'amout': '350.00', 'address_1': 'xxx', 'address_2': 'xxx', 'postalCode': '400607', 'shipped_by_y': 'false', 'channel': 'MFN', 'order_type': 'StandardOrder'}]\n"
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如何将此字符串转换为相应字典的数组.
我试图将字符串转换为JSON,然后加载JSON.但它仍然是一个字符串.
以下代码给出错误:
/home/nish/staging/app/views/product_search/_products.html.erb:31: syntax error, unexpected keyword_ensure, expecting $end
<% if products.any? %>
<%= render :partial=> 'product_listing_feature', :locals => {:scope => scope, :scope_type => scope_type} %>
<ul class="products" data-hook class="products">
<div id="ql_product"></div>
<div class="page">
<taxons.each do |taxon|>
<% taxonProducts = Array.new %>
<% products.each do |product| %>
<%@ptaxon = product.get_taxonomy%>
<%if @ptaxon == taxonomy%>
<% taxonProducts.push(product) %>
<% end %>
<% end %>
<%= render :partial=> 'product_listing', :locals=>{:collection=> taxonProducts} %>
</div>
<% end %>
</div>
</ul>
<% end %>
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我发现当<%end%> …
我写了以下程序:
#include<stdio.h>
#include<math.h>
#include<stdlib.h>
void inttobusn(int val, int n, char* bus)
{
int i;
unsigned int digit;
for (i=0; i < n; i++) {
digit = pow(2, (n-1-i));
if (digit <= val) {
val -= digit;
bus[i] = '1';
//printf("hello %c",bus[i]);
} else {
bus[i] = '0';
}
}
}
main(){
char* bus;
inttobusn(37,8,bus);
int i=0;
//printf("%s",bus);
for(i=0;i<12;i++){
printf("%c",bus[i]);
}
}
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但在运行时它不会打印数组的元素bus.它不打印任何东西.我无法弄清楚出了什么问题.有人可以指出吗?