其他分享
首页 > 其他分享> > Springboot中WebMvcConfigurer接口详解

Springboot中WebMvcConfigurer接口详解

作者:互联网

用途:跨域、拦截器、静态资源处理

接口方法的作用:

    addInterceptors:拦截器
    addViewControllers:页面跳转
    addResourceHandlers:静态资源
    configureDefaultServletHandling:默认静态资源处理器
    configureViewResolvers:视图解析器
    configureContentNegotiation:配置内容裁决的一些参数
    addCorsMappings:跨域
    configureMessageConverters:信息转换器

   在Spring Boot 1.5版本都是靠重写WebMvcConfigurerAdapter的方法来添加自定义拦截器,消息转换器等。SpringBoot 2.0 后,该类被标记为@Deprecated(弃用)。官方推荐直接实现WebMvcConfigurer或者直接继承WebMvcConfigurationSupport,方式一实现     WebMvcConfigurer接口(推荐),方式二继承WebMvcConfigurationSupport类,具体实现可看这篇文章。https://blog.csdn.net/fmwind/article/details/82832758

package com.olive.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 * WebMvcConfigurer
 *
 */
@Configuration
@EnableWebMvc
public class ConfigurerAdapter implements WebMvcConfigurer {

    //图片保存路径
    public static final String PIC_PATH = "/landscape/";
    @Value(value="${application.profile}")
    private  String  profile;

//跨域
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowCredentials(true)
                .allowedHeaders("*")
                .allowedOrigins("*")
                .allowedMethods("GET","POST","PUT","DELETE");

    }

// 可解决Long 类型在 前端精度丢失的问题, 如不想全局 直接添加注解 @JsonSerialize(using= ToStringSerializer.class) 到相应的字段
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/**").addResourceLocations("classpath:/META-INF/resources/").setCachePeriod(0);
        /** 图片传路径 */
        registry.addResourceHandler("/landscape/**").addResourceLocations("file:" + profile);
    }

// 添加拦截器 @Override public void addInterceptors(InterceptorRegistry registry) { /*拦截所有url请求*/ registry.addInterceptor(authenticationInterceptor()) .addPathPatterns("/**"); } }

 

标签:Springboot,springframework,详解,registry,org,WebMvcConfigurer,import,annotation
来源: https://www.cnblogs.com/zhougongjin/p/15880762.html