跨域配置

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
//import io.hzih.modules.vmcp.service.VmcpConfService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;

/**
 * WebMvc配置
 * 跨域配置
 *
 * @author Mark @gmail.com
 * @since 3.0.0 2018-01-25
 */
@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {

//    @Autowired
//    private VmcpConfService vmcpConfService;

    @Override
    public void addCorsMappings(CorsRegistry registry) {



        //设置系统启动时间
//        vmcpConfService.updateStartUpTime();


        registry.addMapping("/**")
                .allowedHeaders("Content-Type", "X-Requested-With", "accept", "Origin", "Access-Control-Request-Method",
                        "Access-Control-Request-Headers")
                .exposedHeaders("Access-Control-Allow-Origin", "Access-Control-Allow-Credentials")

                .allowedOrigins("*", "null")
                .allowedMethods("POST", "GET", "PUT", "OPTIONS", "DELETE")
                .maxAge(3600)
                .allowCredentials(true).maxAge(3600);
        ;
    }

//    @Override
//    public void addCorsMappings(CorsRegistry registry) {
//        registry.addMapping("/**").allowedOrigins("*").allowedMethods("GET", "POST", "OPTIONS", "PUT")
//                .allowedHeaders("Content-Type", "X-Requested-With", "accept", "Origin", "Access-Control-Request-Method",
//                        "Access-Control-Request-Headers")
//                .exposedHeaders("Access-Control-Allow-Origin", "Access-Control-Allow-Credentials")
//                .allowCredentials(true).maxAge(3600);
//    }

    @Override
    public void extendMessageConverters(List> converters) {
        MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
        ObjectMapper objectMapper = jackson2HttpMessageConverter.getObjectMapper();

        //设置全局的时间转化
        SimpleDateFormat smt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        objectMapper.setDateFormat(smt);

        //生成json时，将所有Long转换成String
        SimpleModule simpleModule = new SimpleModule();
        simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
        simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);
        objectMapper.registerModule(simpleModule);

        jackson2HttpMessageConverter.setObjectMapper(objectMapper);
        converters.add(0, jackson2HttpMessageConverter);


        //设置中文编码格式
        List list = new ArrayList();
        list.add(MediaType.APPLICATION_JSON_UTF8);
        jackson2HttpMessageConverter.setSupportedMediaTypes(list);


        jackson2HttpMessageConverter.setObjectMapper(objectMapper);
        converters.add(0, jackson2HttpMessageConverter);
    }

}