为JSP和Thymeleaf设置两个模板解析器

Question

我有一个现有的Spring Boot应用程序，它为视图使用JSP。我希望逐步将视图技术转移到Thymeleaf。

的JSP视图解析器设置在application.properties：

spring.mvc.view.prefix=/WEB-INF/views/ 
spring.mvc.view.suffix=.jsp 

的JSP被位于：

src/main/resources/META-INF/resources/WEB-INF/views/ 

是否有可能增加一个第二视图旋转变压器为Thymeleaf，用于视图不存在为JSP？以便在请求视图时应用程序尝试两个视图解析器。

编辑

我也曾尝试使用下面的配置，没有成功：

@Bean 
public InternalResourceViewResolver jspViewResolver() { 
    final InternalResourceViewResolver vr = new InternalResourceViewResolver(); 
    vr.setPrefix("/META-INF/resources/WEB-INF/views/"); 
    vr.setSuffix(".jsp"); 
    vr.setViewClass(JstlView.class); 
    vr.setOrder(1); 
    return vr; 
} 

@Bean 
public TemplateResolver templateResolver() { 
    final ServletContextTemplateResolver tr = new ServletContextTemplateResolver(); 
    tr.setPrefix("templates/th/"); 
    tr.setSuffix(".html"); 
    tr.setTemplateMode("HTML5"); 
    return tr; 
} 

@Bean 
public SpringTemplateEngine templateEngine() { 
    final SpringTemplateEngine te = new SpringTemplateEngine(); 
    // te.addTemplateResolver(jspViewResolver()); 
    te.setTemplateResolver(templateResolver()); 
    te.setMessageSource(databaseMessageSource); 
    return te; 
} 

@Bean 
public ViewResolver viewResolver() { 
    final ThymeleafViewResolver vr = new ThymeleafViewResolver(); 
    vr.setTemplateEngine(templateEngine()); 
    vr.setOrder(2); 
    return vr; 
} 

Answer 1

你可能会尝试通过Java配置进行配置。

package com.example; 

import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 
import org.springframework.web.servlet.config.annotation.ViewResolverRegistry; 
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; 
import org.springframework.web.servlet.view.InternalResourceViewResolver; 
import org.springframework.web.servlet.view.JstlView; 
import org.thymeleaf.spring4.view.ThymeleafViewResolver; 

@SpringBootApplication 
public class Application extends WebMvcConfigurerAdapter{ 

    @Override 
    public void configureViewResolvers(ViewResolverRegistry registry) { 
     registry.viewResolver(new ThymeleafViewResolver()); 

     InternalResourceViewResolver internalResourceViewResolver = new InternalResourceViewResolver(); 
     internalResourceViewResolver.setViewClass(JstlView.class); 
     internalResourceViewResolver.setPrefix("/WEB-INF/views"); 
     internalResourceViewResolver.setSuffix(".jsp"); 
     registry.viewResolver(internalResourceViewResolver); 
    } 

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

请记住，InternalResourceViewResolver应该最后。

同样在SO

1. How to use multiple ViewResolvers in Spring?
2. Spring MVC with multiple view resolvers