ViewResolver using Java annotation

model-view-controller java annotations spring spring-mvc

2022-09-02 01:05:51

在Spring 3.1.1中，是否可以使用Java注释配置视图解析器？

我使用Java注释完成了所有配置，但我被困在视图解析器上。

法典

package com;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import javax.sql.DataSource;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import com.*;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.UrlBasedViewResolver;
import org.springframework.web.servlet.view.JstlView;

@Configuration
@ComponentScan("com")
public class AppConfig
{
    {
          //Other bean declarations
    }

    @Bean
    public UrlBasedViewResolver urlBasedViewResolver()
    {
        UrlBasedViewResolver res = new InternalResourceViewResolver();
        res.setViewClass(JstlView.class);
        res.setPrefix("/WEB-INF/");
        res.setSuffix(".jsp");

        return res;
    }
}

我使用此代码并运行了应用程序，但它没有返回适当的视图。但是，如果我在文件中配置视图解析器，它可以正常工作。app-servlet.xml

答案 1

你的类应该扩展WebMvcConfigurerAdapter类。

@Configuration
@ComponentScan(basePackages="com")
@EnableWebMvc
public class MvcConfiguration extends WebMvcConfigurerAdapter{

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

答案 2

我用Spring 4.3.4测试了你的场景，它工作正常。我建议仔细检查您扫描的软件包，以及是否正确提供了AppConfig。我正在附加从您的AppConfig开始的所有文件。然而，扩展WebMvcConfigurerAdapter是件好事。附带的源代码并不理想，它很简单，只能尝试重现您报告的问题。

从 AppConfig 开始：

package com;

import org.springframework.context.annotation.*;
import org.springframework.web.servlet.view.*;

@Configuration
@ComponentScan("com")
public class AppConfig {
    @Bean
    public UrlBasedViewResolver getViewResovler() {
        UrlBasedViewResolver urlBasedViewResolver = new UrlBasedViewResolver();
        urlBasedViewResolver.setViewClass(JstlView.class);
        urlBasedViewResolver.setPrefix("/WEB-INF/jsp/");
        urlBasedViewResolver.setSuffix(".jsp");
        return urlBasedViewResolver;
    }

}

然后：

package com;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

    public class WebInit extends AbstractAnnotationConfigDispatcherServletInitializer {

        @Override
        protected Class<?>[] getRootConfigClasses() {
            return new Class<?>[] { };
        }

        @Override
        protected Class<?>[] getServletConfigClasses() {
            return new Class<?>[] { AppConfig.class };
        }

        @Override
        protected String[] getServletMappings() {
            return new String[] { "/" };
        }
    }

最后：

package com;

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

@Controller
public class MainController {

    @RequestMapping("/")
    public ModelAndView asdf() {
        return new ModelAndView("ABC");
    }
}