集成Swagger2，接口文档不显示
package com.chengshan.camera.config;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter;
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;
import java.util.List;
/**
* MvcConfig
*
* @author fb
* @Description 解决跨域、swagger拦截等配置
* @date 2020-01-10
*/
@Configuration
@EnableWebMvc
public class MvcConfig implements WebMvcConfigurer {
/**
* Configure how long in seconds the response from a pre-flight request can be cached by clients.
*/
@Value("${:3600}")
private Integer maxAge;
/**
* Add handlers to serve static resources such as images, js, and, css
* files from specific locations under web application root, the classpath,
* and others.
*
* @param registry Stores registrations of resource handlers for serving static resources such as images, css files and others
*/
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/*", "*/*", "/webjars/**", "/static/*", "templates/*")
.addResourceLocations("classpath:/META-INF/resources/", "classpath:/META-INF/resources/webjars/", "classpath:/static/", "classpath:/templates/");
}
/**
* Configure cross origin requests processing.
* 开启跨域
*
* @param registry Assists with the registration of global, URL pattern based
* @since 4.2
* <p>
* SpringBoot升级后，跨域配置报错，将.allowedOrigins替换成.allowedOriginPatterns即可。
* When allowCredentials is true, allowedOrigins cannot contain thespecial value "*"since that cannot be set on the “Access-Control-Allow-Origin” response header. To allow credentials to a set of origins, list them explicitly or consider using “allowedOriginPatterns” instead.
* 大概意思是：allowCredentials为true时，allowedOrigins不能包含特殊值“*”，因为不能在“Access Control Allow Origin”响应头上设置该值。要允许凭据指向一组源，请显式列出它们，或者考虑改用“allowedOriginPatterns”。
* 所以解决办法：将.allowedOrigins替换成.allowedOriginPatterns即可。
*/
@Override
public void addCorsMappings(CorsRegistry registry) {
// 设置允许跨域的路由
registry.addMapping("/**") // 所有的当前站点的请求地址，都支持跨域访问。
// 设置允许跨域请求的域名
.allowedOriginPatterns("*") // 所有的外部域都可跨域访问。 如果是localhost则很难配置，因为在跨域请求的时候，外部域的解析可能是localhost、127.0.0.1、主机名
// 是否允许证书（cookies）
.allowCredentials(true) // 是否支持跨域用户凭证
// 设置允许的方法,当前站点支持的跨域请求类型是什么
.allowedMethods(HttpMethod.GET.name(), HttpMethod.POST.name(), HttpMethod.DELETE.name(), HttpMethod.PUT.name(), HttpMethod.PATCH.name())
// 跨域允许时间
.maxAge(maxAge);
}
/**
* Extend or modify the list of converters after it has been, either
* {@link #configureMessageConverters(List) configured} or initialized with
* a default list.
* <p>Note that the order of converter registration is important. Especially
* in cases where clients accept {@link MediaType#ALL}
* the converters configured earlier will be preferred.
*
* @param converters the list of configured converters to be extended
* @since 4.1.3
*/
@Override
public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
WebMvcConfigurer.super.extendMessageConverters(converters);
converters.forEach(httpMessageConverter -> {
if (httpMessageConverter instanceof AbstractJackson2HttpMessageConverter) {
ObjectMapper objectMapper = ((AbstractJackson2HttpMessageConverter) httpMessageConverter).getObjectMapper();
objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
}
});
}
}