Question

我想在springboot中使用jsp，我在我的程序中添加了jasper依赖项 pom.xml文件，但是当我运行springboot应用程序时，当我运行corectly时在我的浏览器中输入localhost：8080 / home，它会向我显示这种类型的错误。我在RequestMapping的宫殿中使用了getMapping注释，我最后尝试了四天，但无法欢呼

这是我的项目文件结构

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.0.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.main</groupId>
    <artifactId>SpringSecurityTutorial</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>SpringSecurityTutorial</name>
    <description>Spring Security Service</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-jasper -->
        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jasper</artifactId>
            <version>8.0.28</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-jasper -->
        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jasper</artifactId>
            <version>8.5.35</version>
        </dependency>


        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

HomeConteoller.java

package com.main.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;


@Controller
public class HomeController {
    
    @GetMapping("/home")
    public String home() {
        
        return "Home.jsp";
    }

}

home.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
  Welcome to Security Protection
</body>
</html>

Answer 1

由控制器中的home()处理程序方法返回的字符串应该是JSP视图的名称，不带扩展名。即return "home";。

Answer 2

尝试添加以下依赖项

<dependency>
     <groupId>javax.servlet.jsp</groupId>
     <artifactId>jsp-api</artifactId>
     <version>2.1</version>
  </dependency>

Answer 3

尝试一下：

返回“ /Home.jsp”；

在Chrome浏览器上运行springBoot应用程序时出现错误404

3 个答案: