Java 弹簧启动404未找到错误_Java_Spring_Spring Mvc_Spring Boot

Java 弹簧启动404未找到错误

java spring spring-mvc spring-boot

Java 弹簧启动404未找到错误,java,spring,spring-mvc,spring-boot,Java,Spring,Spring Mvc,Spring Boot,我正在尝试运行spring启动应用程序，但遇到404 not found错误项目结构： src/ +- main/ +- java/ | + com/ | + demo/ | SpringBootDemo.java | + controller/ | HomeController.java +- resources/

我正在尝试运行spring启动应用程序，但遇到404 not found错误

项目结构：

src/
 +- main/
     +- java/
     |   + com/
         |   + demo/
             |    SpringBootDemo.java
             |    + controller/
                  |    HomeController.java
     +- resources/
             |   application.yml


src/
 +- main/
     +- webapp/
        +- WEB-INF/
           +- pages/
              | home.jsp

HomeController.java

package com.demo.controller;

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

@Controller
public class HomeController {

    @GetMapping("/")
    public String getHome() {
        System.out.println("Controller");
        return "home";
    }
}

application.yml

server:
  port: 8080
spring:
  mvc:
    view:
      prefix: /WEB-INF/pages/
      suffix: .jsp

格雷德尔先生

buildscript {
    ext {
        springBootVersion = '1.5.6.RELEASE'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'org.springframework.boot'
apply plugin: 'application'
mainClassName = 'com.demo.SpringBootDemo'

version = '0.0.1-SNAPSHOT'
sourceCompatibility = 1.8

// In this section you declare where to find the dependencies of your project
repositories {
    mavenCentral()
}

dependencies {
    compile('org.springframework.boot:spring-boot-starter-web')
    testCompile('org.springframework.boot:spring-boot-starter-test')
    compile('org.springframework.boot:spring-boot-starter-parent')
    compile('javax.servlet.jsp.jstl:javax.servlet.jsp.jstl-api')
}

jar {
  manifest {
    attributes(
      'Main-Class': 'com.demo.SpringBootDemo'
    )
  }
}

SpringBootDemo.java

package com.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication(scanBasePackages="com.demo")
public class SpringBootDemo {

    public static void main(String[] args) {
        SpringApplication.run(SpringBootDemo.class, args);
    }    
}

home.jsp

<!DOCTYPE html>

<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Hello</title>
</head>
<body>
    Hello World
</body>
</html>

但是当我访问更新时，它会显示
白标错误页面
好的，我会努力做得更好。我不是有意要伤害你
我认为您需要从
SpringBootServletInitializer
扩展springbootsapplication类，以便在您的springboot应用程序中获得servlet功能

@SpringBootApplication public class WebApplication extends SpringBootServletInitializer { public static void main(String[] args) throws Exception { SpringApplication.run(WebApplication.class, args); } }
为了能够解析视图，必须定义以下属性：

spring.mvc.view.prefix: /WEB-INF/pages spring.mvc.view.suffix: .jsp
或者当然是它们的
yaml
变体。然后，实际的jsp页面需要放在src/main/webapp/WEB-INF/pages中
这些是我的pom中的依赖项

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <scope>provided</scope> </dependency>

希望这将有助于您的应用程序正常运行…
使用maven spring boot运行目标：
spring boot:Run
在IntelliJ中设置maven配置的步骤：

调试/运行配置|单击左上角可见的+按钮|选择Maven |将命令行设置为
spring boot:Run
此链接提供了有关REST web服务的教程，但我一直在关注web应用程序的问题。这个链接没有给出答案，因为我已经搜索了教程，但仍然停留在这个问题上。请让我知道我哪里做错了。对不起，伙计们，我不是想给出一个糟糕的答案。希望这一个会做得更好…在build.gradle文件中添加
compile（“org.springframework.boot:spring boot starter thymeleaf”）
并将home.html放在resource/templates文件夹中后，我让它工作起来了。另外，将tomcat嵌入jasper依赖项的范围从提供更改为编译可能会有所帮助。为我工作！你读过这个吗？如何构建和运行应用程序？我没有看到任何war插件应用于gradle构建，因此您可能忽略了文档中的这一重要警告`
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <scope>provided</scope> </dependency>

@Controller public class HelloController { @RequestMapping("/") public String hello(Model model, @RequestParam(value="name", required=false, defaultValue="World") String name) { model.addAttribute("name", name); return "hello"; } }