Spring Boot Thymeleaf不会解析模板

Question

我遇到了一个问题，让我的spring boot应用程序加载我的简单网页。我已经复制了这里提供的示例，并在模板目录中实现了它们，我一直得到这个错误

TemplateInputException：解析模板[index]时出错，模板可能不存在，或者任何已配置的模板解析程序都无法访问模板

下面是文件目录

package com.example.cloud_computing_project;

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

@Controller
public class HomeController {

    @GetMapping("/")
    private String OpenMainPage() {
        return "index";
    }
}

plugins {
    id 'org.springframework.boot' version '2.2.1.RELEASE'
    id 'io.spring.dependency-management' version '1.0.8.RELEASE'
    id 'java'
}

group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'

configurations {
    developmentOnly
    runtimeClasspath {
        extendsFrom developmentOnly
    }
}

repositories {
    mavenCentral()
    maven { url 'https://repo.spring.io/milestone' }
}

ext {
    set('springCloudVersion', "Hoxton.RC2")
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    //implementation 'org.springframework.cloud:spring-cloud-starter-aws-messaging'
    developmentOnly 'org.springframework.boot:spring-boot-devtools'
    runtimeOnly 'com.microsoft.sqlserver:mssql-jdbc'
    testImplementation('org.springframework.boot:spring-boot-starter-test') {
        exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
    }
}

dependencyManagement {
    imports {
        mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
    }
}

test {
    useJUnitPlatform()
}

如有任何帮助，不胜感激，谢谢。

Answer 1

在Spring Boot Thymeleaf Starter2.0以后，您需要显式地包含ultraq、Thymeleaf布局方言依赖项。在Maven中应该是：

<dependency>
    <groupId>nz.net.ultraq.thymeleaf</groupId>
    <artifactId>thymeleaf-layout-dialect</artifactId>
</dependency>