响应对象 响应对象功能和方法 HTTP 响应的内容 在 Web 服务器接收请求处理后，向客户端发送 HTTP 响应 （Response）。 O 响应的内容 ▶ 响应状态（Status Code） ▶ 响应头（Response Header） ▶ 响应体（Response Body） 大纲 HTTP 响应的内容 HTTP 响应对象 响应对象功能和方法 ‚ HTTP 响应状态行 表明响应的状态信息，如成功、失败、错误。 向客户端发送指定的错误信息码，可以是任意定义的整数。 1 response.setCharacterEncoding("GBK"); 2 response.sendError(580); O public void sendError(int sc, String msg) throws IOException 向客户端发送指定的错误信息码和自定义状态消息。 1 response.setCharacterEncoding("GBK"); setCharacterEncoding("GBK"); 2 response.sendError(580, "自定义错误"); 大纲 HTTP 响应的内容 HTTP 响应对象 响应对象功能和方法 设置响应头 当客户端接收到响应状态为 200 时，浏览器会继续接收响应头信 息，来确定响应体的类型和大小。 O public void setHeader(String name, String value) 将指定名称和值的响应头发送到客户端。

parse(self, response): for quote in response.css('div.quote'): yield { 'author': quote.xpath('span/small/text()').get(), 'text': quote.css('span.text::text').get(), } next_page = response.css('li.next next a::attr("href")').get() if next_page is not None: yield response.follow(next_page, self.parse) Put this in a text file, name it to something like quotes_spider.py and run the spider using the runspider the URL for quotes in humor category) and called the default callback method parse, passing the response object as an argument. In the parse callback, we loop through the quote elements using a CSS Selector

parse(self, response): for quote in response.css('div.quote'): yield { 'author': quote.xpath('span/small/text()').get(), 'text': quote.css('span.text::text').get(), } next_page = response.css('li.next next a::attr("href")').get() if next_page is not None: yield response.follow(next_page, self.parse) Put this in a text file, name it to something like quotes_spider.py and run the spider using the runspider the URL for quotes in humor category) and called the default callback method parse, passing the response object as an argument. In the parse callback, we loop through the quote elements using a CSS Selector

parse(self, response): for quote in response.css('div.quote'): yield { 'author': quote.xpath('span/small/text()').get(), 'text': quote.css('span.text::text').get(), } next_page = response.css('li.next next a::attr("href")').get() if next_page is not None: yield response.follow(next_page, self.parse) Put this in a text file, name it to something like quotes_spider.py and run the spider using the runspider the URL for quotes in humor category) and called the default callback method parse, passing the response object as an argument. In the parse callback, we loop through the quote elements using a CSS Selector

parse(self, response): for quote in response.css('div.quote'): yield { 'author': quote.xpath('span/small/text()').get(), 'text': quote.css('span.text::text').get(), } next_page = response.css('li.next next a::attr("href")').get() if next_page is not None: yield response.follow(next_page, self.parse) Put this in a text file, name it to something like quotes_spider.py and run the spider using the runspider the URL for quotes in humor category) and called the default callback method parse, passing the response object as an argument. In the parse callback, we loop through the quote elements using a CSS Selector

parse(self, response): for quote in response.css('div.quote'): yield { 'text': quote.css('span.text::text').get(), 'author': quote.xpath('span/small/text()').get(), } next_page = response.css('li.next next a::attr("href")').get() if next_page is not None: yield response.follow(next_page, self.parse) Put this in a text file, name it to something like quotes_spider.py and run the spider using the runspider the URL for quotes in humor category) and called the default callback method parse, passing the response object as an argument. In the parse callback, we loop through the quote elements using a CSS Selector

SetMap::Response> response); void generate_path_service( const std::shared_ptr request, std::shared_ptrResponse> response); bool SetMap::Response> response); void generate_path_service( const std::shared_ptr request, std::shared_ptrResponse> response); bool SetMap::Response> response); void generate_path_service( const std::shared_ptr request, std::shared_ptrResponse> response); bool

'quotes' start_urls = [ 'http://quotes.toscrape.com/tag/humor/', ] def parse(self, response): for quote in response.css('div.quote'): yield { 'text': quote.css('span.text::text').get(), 'author': quote Release 1.6.0 (continued from previous page) next_page = response.css('li.next a::attr("href")').get() if next_page is not None: yield response.follow(next_page, self.parse) Put this in a text file, name the URL for quotes in humor category) and called the default callback method parse, passing the response object as an argument. In the parse callback, we loop through the quote elements using a CSS Selector

parse(self, response): for quote in response.css('div.quote'): yield { 'author': quote.xpath('span/small/text()').get(), 'text': quote.css('span.text::text').get(), } next_page = response.css('li.next next a::attr("href")').get() if next_page is not None: yield response.follow(next_page, self.parse) Put this in a text file, name it to something like quotes_spider.py and run the spider using the runspider the URL for quotes in humor category) and called the default callback method parse, passing the response object as an argument. In the parse callback, we loop through the quote elements using a CSS Selector

'quotes' start_urls = [ 'http://quotes.toscrape.com/tag/humor/', ] def parse(self, response): for quote in response.css('div.quote'): yield { 'text': quote.css('span.text::text').get(), 'author': quote Release 1.7.4 (continued from previous page) next_page = response.css('li.next a::attr("href")').get() if next_page is not None: yield response.follow(next_page, self.parse) Put this in a text file, name the URL for quotes in humor category) and called the default callback method parse, passing the response object as an argument. In the parse callback, we loop through the quote elements using a CSS Selector