Question

我有一个应用程序，其中我在Spring Boot中使用Angular 4。它具有主页，仪表板，检查，报告页面等。当我单击导航菜单中的任何链接时，它将转到该页面。当我点击localhost：8080时，它转到主页。

之前我们没有任何View Resolver。我们要求通过单击超级链接在“报告”页面之一中下载Excel / PDF / CSV。所以我添加了一个Configuration类和Controller并进行了测试，当我点击直接URL时，它工作正常（意味着我可以下载excel / pdf / csv）。但是，当我按下localhost：8080时，它没有显示主页，而是下载Excel。我确定我缺少一些配置。请提供任何帮助...我可以根据要求共享更多代码...

直接网址：localhost：8080 / api / inspDefectHistReportDownload.xls

WebConfiguration.java

@Configuration
public class WebConfiguration extends WebMvcConfigurerAdapter {

    @Override
    public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
        configurer
                .defaultContentType(MediaType.APPLICATION_JSON)
                .favorPathExtension(true);
    }

    /*
     * Configure ContentNegotiatingViewResolver
     */
    @Bean
    public ViewResolver contentNegotiatingViewResolver(ContentNegotiationManager manager) {
        ContentNegotiatingViewResolver resolver = new ContentNegotiatingViewResolver();
        resolver.setContentNegotiationManager(manager);

        // Define all possible view resolvers
        List<ViewResolver> resolvers = new ArrayList<>();

        //resolvers.add(csvViewResolver());
        resolvers.add(excelViewResolver());
        //resolvers.add(pdfViewResolver());

        resolver.setViewResolvers(resolvers);
        return resolver;
    }

    /*
     * Configure View resolver to provide XLS output using Apache POI library to
     * generate XLS output for an object content
     */
    @Bean
    public ViewResolver excelViewResolver() {
        return new ExcelViewResolver();
    }

    /*
     * Configure View resolver to provide Csv output using Super Csv library to
     * generate Csv output for an object content
     */
    @Bean
    public ViewResolver csvViewResolver() {
        return new CsvViewResolver();
    }

    /*
     * Configure View resolver to provide Pdf output using iText library to
     * generate pdf output for an object content
     */
    @Bean
    public ViewResolver pdfViewResolver() {
        return new PdfViewResolver();
    }

我当然有ReportController，ExcelView ...和ExcelViewResolver.java等...（如果需要，我也可以发布这些类）

Answer 1

经过长期调查，我发现下面的代码对我有用。现在，我可以通过相应的URL转到主页和其他屏幕，并单击特定屏幕上的超级链接，就可以下载所需的excel。

WebConfiguration.java

@Override
public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
    configurer
    .defaultContentType(MediaType.APPLICATION_JSON)
    .ignoreAcceptHeader(true);
}

 @Override
 public void configureViewResolvers(ViewResolverRegistry registry) {
    registry.enableContentNegotiation(
            new ExcelView()
    );
}

Angular 4 +春季启动+ ContentNegotiatingViewResolver

1 个答案: