SpringMVC Config

2023-05-18, by alamide

SpringMVC 的相关配置

1.Enable MVC Configuration

使配置生效

@Configuration
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {
}

2.Type Conversion

可以使用 public interface Converter<S, T> 接口，实现类型转换，可用于在 Controller Method 中，例如客户端传来账号 Id，服务端接收数据后自动转换为 Account

public class StringToAccountConverter implements Converter<String, Account> {
    @Override
    public Account convert(String source) {
        return getAccount(source);
    }

    private Account getAccount(String accountId){
        Account account = new Account();
        account.setAccountId(accountId);
        account.setBalance(accountId.length());
        return account;
    }
}

@Configuration
@ComponentScan(basePackages = {"com.alamide.web"})
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {
    @Override
    public void addFormatters(FormatterRegistry registry) {
        registry.addConverter(new StringToAccountConverter());
    }
}

3.Interceptors

配置 Interceptor

@Configuration
@ComponentScan(basePackages = {"com.alamide.web"})
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        WebMvcConfigurer.super.addInterceptors(registry);
    }
}

4.ViewResolver

@Controller 的 Method 返回的 String，映射到具体的 View 页面

@Configuration
@ComponentScan(basePackages = {"com.alamide.web"})
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {
    @Override
    public void configureViewResolvers(ViewResolverRegistry registry) {
        final UrlBasedViewResolver viewResolver = new UrlBasedViewResolver();
        UrlBasedViewResolverRegistration resolverRegistration = new UrlBasedViewResolverRegistration(viewResolver);
        resolverRegistration.prefix("/WEB-INF/").suffix(".jsp").viewClass(InternalResourceView.class);
        registry.viewResolver(viewResolver);
    }
}

4.Static Resources

设置静态资源映射

@Configuration
@ComponentScan(basePackages = {"com.alamide.web"})
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/page/**")
                .addResourceLocations("classpath:/static/");
    }
}

Tags: Java - SpringMVC

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