nginx返回json或者文本格式的方法

location ~ ^/get_text {
  default_type text/html;
  return 200 'hello world!'; 
}

location ~ ^/get_json { 
  default_type application/json; 
  return 200 '{"status":"success","result":"hello world!"}'; 
} 

location ~ ^/get_text/article/(.*)_(\d+).html$ { 
  default_type text/html; 
  set $s $1; 
  set $d $2; 
  return 200 str:$s$d; 
} 

location ~ ^/get_text { 
  default_type text/html; 
  add_header Content-Type 'text/html; charset=utf-8'; 
  return 200 '你好，世界！';  
}