logo

匠人学习平台在线直播操作指南

Java教程

Web开发(7)

 
  1. 修改响应
既然我们能通过Filter修改HttpServletRequest,自然也能修改HttpServletResponse,因为这两者都是接口。
我们来看一下在什么情况下我们需要修改HttpServletResponse
假设我们编写了一个Servlet,但由于业务逻辑比较复杂,处理该请求需要耗费很长的时间:
@WebServlet(urlPatterns = "/slow/hello") public class HelloServlet extends HttpServlet { protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { resp.setContentType("text/html"); // 模拟耗时1秒: try { Thread.sleep(1000); } catch (InterruptedException e) { } PrintWriter pw = resp.getWriter(); pw.write("<h1>Hello, world!</h1>"); pw.flush(); } }
本章目录
    logo

    Follow Us

    linkedinfacebooktwitterinstagramweiboyoutubebilibilitiktokxigua

    We Accept

    /image/layout/pay-paypal.png/image/layout/pay-visa.png/image/layout/pay-master-card.png/image/layout/pay-airwallex.png/image/layout/pay-alipay.png

    地址

    Level 10b, 144 Edward Street, Brisbane CBD(Headquarter)
    Level 2, 171 La Trobe St, Melbourne VIC 3000
    四川省成都市武侯区桂溪街道天府大道中段500号D5东方希望天祥广场B座45A13号
    Business Hub, 155 Waymouth St, Adelaide SA 5000

    Disclaimer

    footer-disclaimerfooter-disclaimer

    JR Academy acknowledges Traditional Owners of Country throughout Australia and recognises the continuing connection to lands, waters and communities. We pay our respect to Aboriginal and Torres Strait Islander cultures; and to Elders past and present. Aboriginal and Torres Strait Islander peoples should be aware that this website may contain images or names of people who have since passed away.

    匠人学院网站上的所有内容,包括课程材料、徽标和匠人学院网站上提供的信息,均受澳大利亚政府知识产权法的保护。严禁未经授权使用、销售、分发、复制或修改。违规行为可能会导致法律诉讼。通过访问我们的网站,您同意尊重我们的知识产权。 JR Academy Pty Ltd 保留所有权利,包括专利、商标和版权。任何侵权行为都将受到法律追究。查看用户协议

    © 2017-2025 JR Academy Pty Ltd. All rights reserved.

    ABN 26621887572