SpringBoot项目添加webapp目录,解决Path with “WEB-INF“ or “META-INF“

蔚落 2023-10-03 14:08 8阅读 0赞

springboot创建webapp文件夹访问jsp页面  
一、文章简述

使用IDEA工具创建的SpringBoot项目本身是没有webapp目录的。如果我们想要添加webapp目录的话，可以手动添加。

二、操作步骤

1）点击IDEA右上角的Project Structure  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70]  
或者  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 1]  
**出现如下页面**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 2]  
**选择这个web**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 3]  
如果没有web的话,或者不小心删除,可以点击加号重新选中  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 4]  
对于路径进行编辑 一般放在src/main/webapp  
目录结构为src/main/webapp/WEB-INF/web.xml  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 5]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 6]  
路径代码

D:\JavaWorkSpace\MySpringBootTest\src\main\webapp\WEB-INF\web.xml

上面完成后下面也一样,点击编辑对于路径编辑,可以写代码也可以自己手动选路径  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 7]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 8]  
下面路径代码

D:\JavaWorkSpace\MySpringBootTest\src\main\webapp

都完成后apply ok即可,会自动帮我们创建  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 9]  
然后就能看到这个结构  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 10]  
webapp的图标中心必须有蓝色的点即为成功  
我们创建个jsp访问试下

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 11]  
别忘了我们的pom依赖还有application.properties配置

<dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>

前缀的写法各有千秋,也可以写成/WEB-INF/的,只是存放jsp的路径不一样,如果写成/,那么你的jsp在webapp目录下直接创建即可,如果是直接/WEB-INF/,那么你的jsp需要在目录创建,也就是和web.xml在同一层
    #配置视图的前缀和后缀
    spring.mvc.view.prefix=/或者(前后二选其一)spring.mvc.view.prefix=/WEB-INF
    spring.mvc.view.suffix=.jsp

后台访问jsp方法,顺便把数据库查到的数据带过去

@RequestMapping("test1")
        public String test1(HttpServletRequest request){
        
            request.setAttribute("info",testService.queryStudent());
            return "TestJsp";
        }

jsp

<%--
      Created by IntelliJ IDEA.
      User: wx_weiyihe
      Date: 2021/8/19
      Time: 15:51
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
    <h1>我的jsp</h1>
    ${
        info}
    </body>
    </html>

访问

http://localhost:8080/test1

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjcxMzUwOA_size_16_color_FFFFFF_t_70 12]  
如果访问不到jsp页面(404)出现以下错误

> Path with “WEB-INF” or “META-INF”:  
> 2021-10-25 09:27:35.233 WARN 12892 — \[nio-8080-exec-4\] o.s.w.s.r.ResourceHttpRequestHandler : Path with “WEB-INF” or “META-INF”: \[WEB-INF/showUserJSP.jsp\]

因为spring boot不提倡用jsp，需要在pom.xml中加入以下依赖就可以了。

加完依赖注意刷新maven

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