springboot返回html和jsp

一、返回html

（1）添加maven依赖

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

（2）thymeleaf模板默认寻找resources下，templates文件夹放html页面，static文件夹放css及js

（3）controller代码如下

package springboot.controller;

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

@Controller
public class HtmlController {
    @RequestMapping("/show")
    public String show() {
        return "aaa";
    }
}

二、返回jsp

（1）添加jsp的maven依赖

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

注：返回jsp需要把spring-boot-starter-thymeleaf注释掉

（2）在controller里添加寻找jsp页面的视图解析器

@Bean
public InternalResourceViewResolver viewResolver() {
    InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
    viewResolver.setPrefix("/WEB-INF/");
    viewResolver.setSuffix(".jsp");
    return viewResolver;
}

（3）结构图如下

（4）controller代码如下

package springboot.controller;

import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

@Controller
public class JspController {
    @RequestMapping("/test")
    public String index() {
        return "home";
    }
    @Bean
    public InternalResourceViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setPrefix("/WEB-INF/");
        viewResolver.setSuffix(".jsp");
        return viewResolver;
    }
}

注：返回html和jsp时使用@Controller注解