视图（.html）的Spring Boot映射操作不工作

Question

package com.meenakshi.fileupload;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;



@SpringBootApplication
public class Example {



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

}

package com.meenakshi.fileupload.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;



@Controller
public class IndexController {

    @RequestMapping("/")
    public String index() {
        System.out.print("REDIRECTED BY MEENAKSHI");

        return "index";
    }

}

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>myproject</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.3.5.RELEASE</version>
    </parent>



    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <!-- Additional lines to be added here... -->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </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>

如何化解？在Spring Boot中默认的视图解析器是什么？我需要强制使用胸腺嘧啶吗？

另外，我是否需要向application.properties添加一些内容

Answer 1

有两种方法可以公开index.html。

我最喜欢的方式是做以下几件事：

@Configuration
public class WebMvcConfiguration extends WebMvcConfigurerAdapter {

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("index.html");
        registry.setOrder(Ordered.HIGHEST_PRECEDENCE);
    }

}

它会自动抓取您的index.html并创建一个默认视图控制器来为它服务。

@Controller
@RequestMapping("/")
public class DefaultController {

    @GetMapping("/")
    public ModelAndView index() {
        IndexModel indexModel = new IndexModel();
        return new ModelAndView("index", "index", indexModel);
    }

}