idea中原生Servlet3.0开发之---使用注解来搭建动态web应用流程

傷城~ 2022-04-17 06:44 352阅读 0赞

### 一、Servlet3.0文档下载和服务器版本说明 ###

Servlet3.0是JSR-315标准规范，需要tomcat7.0及以上版本的支持。

1、可访问：[https://www.jcp.org/en/jsr/summary?id=servlet+3.0][https_www.jcp.org_en_jsr_summary_id_servlet_3.0] 下载servlet3.0的标准文档，不过此文档为英文文档！！！

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70][]

2、可访问tomcat的网站：[https://tomcat.apache.org][https_tomcat.apache.org] ，来查看servlet3.0 tomcat支持的版本,必须是tomcat7.0及以上

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 1][]

### 二、 idea中原生Servlet3.0使用注解来搭建动态web应用流程 ###

1、新建project项目

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 2][]

2、选择如下选项，然后Next

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 3][]

3、 填入项目名称和保存路径，然后Finish

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 4][]

4、 新建完成的目录结构如下

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 5][]

5、 配置tomcat服务器

5.1）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 6][]

5.2）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 7][]

5.3）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 8][]

5.4）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 9][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 10][]

5.5）点击OK

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 11][]

6、创建一个servlet，实现HttpServlet接口

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 12][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 13][]

如果报错找不到javax.servlet，可导入servlet-api.jar

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 14][] 7、编辑index.jsp

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 15][]

8、编写MyServlet.java

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 16][] 9、启动tomcat,访问：[http://localhost:8080/][http_localhost_8080]

![20181114153631412.png][]

点击hello，打印在servlet中doGet方法中的内容，或者直接访问：[http://localhost:8080/myServlet][http_localhost_8080_myServlet]也可以。

![2018111415370516.png][]

总结：没有使用web.xml配置，但使用@WebServlet注解也可以访问到控制器端

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![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 17][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 18][]

或可一试哦！

[https_www.jcp.org_en_jsr_summary_id_servlet_3.0]: https://www.jcp.org/en/jsr/summary?id=servlet+3.0
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[https_tomcat.apache.org]: https://tomcat.apache.org
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 1]: /images/20220417/b495b8b20d44443295c78b223e0150fb.png
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 4]: /images/20220417/fdb8759f94ba47fcac48b08f5be7ee04.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 5]: /images/20220417/26839bfe075e4908891d180707438efd.png
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppbmhhaWppbmc_size_16_color_FFFFFF_t_70 13]: /images/20220417/6a98a20fe6eb4fb9a7773784aca4dbf7.png
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[http_localhost_8080]: http://localhost:8080/
[20181114153631412.png]: /images/20220417/3aac0dba1fd34fe69e682598943d9daa.png
[http_localhost_8080_myServlet]: http://localhost:8080/myServlet
[2018111415370516.png]: /images/20220417/1041d097cf3f4d34b805cee7a45b6d3b.png
[Java]: https://www.javaxxbj.com/
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