解决 Tomcat 跨域题目 - Tomcat 设置静态文件和 Java Web 服务（Spring MVC - ToB企服应用市场:ToB评测及商务社交产业平台

<filter>
<filter-name>CorsFilter</filter-name>
<filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
<init-param>
<param-name>cors.allowed.origins</param-name>
<param-value>*</param-value>
</init-param>
<init-param>
<param-name>cors.allowed.methods</param-name>
<param-value>GET,POST,HEAD,OPTIONS,PUT</param-value>
</init-param>
<init-param>
<param-name>cors.allowed.headers</param-name>
<param-value>*</param-value>
</init-param>
<init-param>
<param-name>cors.exposed.headers</param-name>
<param-value>Access-Control-Allow-Origin,Access-Control-Allow-Credentials</param-value>
</init-param>
<init-param>
<param-name>cors.support.credentials</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CorsFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

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<filter>
<filter-name>cors</filter-name>
<filter-class>MyCORSFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>cors</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

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import org.springframework.stereotype.Component;
import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Component
public class MyCORSFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException, IOException {
HttpServletResponse response = (HttpServletResponse) servletResponse;
String origin = (String) servletRequest.getRemoteHost()+":"+servletRequest.getRemotePort();
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Headers", "x-requested-with,Authorization");
response.setHeader("Access-Control-Allow-Credentials","true");
filterChain.doFilter(servletRequest, servletResponse);
}
@Override
public void destroy() {
}
}

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package com.mapsharp.map.web.config;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import java.nio.charset.Charset;
import java.util.List;
/**
* @author
* @Description: 设置允许跨域访问static资源
* @date 2019/6/39:26
*/
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
System.out.println("自动配置生效addResourceHandlers");
registry.addResourceHandler("/**").addResourceLocations("classpath:/static/");
super.addResourceHandlers(registry);
}
//前端跨域
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")//设置允许跨域的路径
.allowedOrigins("*")//设置允许跨域请求的域名
.allowedHeaders("*")//是否允许证书不再默认开启
.exposedHeaders("Access-Control-Allow-Origin,Access-Control-Allow-Credentials")//是否允许证书不再默认开启
.allowCredentials(true)//是否允许证书不再默认开启
.allowedMethods("GET", "POST", "PUT", "OPTIONS", "DELETE")//设置允许的方法
.maxAge(3600);//跨域允许时间
}
//为了解决中文编码方式乱码问题
@Bean
public HttpMessageConverter<String> responseBodyConverter() {
StringHttpMessageConverter converter = new StringHttpMessageConverter(Charset.forName("UTF-8"));
converter.setWriteAcceptCharset(false);
return converter;
}
@Bean
public ObjectMapper getObjectMapper() {
return new ObjectMapper();
}
@Bean
public MappingJackson2HttpMessageConverter messageConverter() {
MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
converter.setObjectMapper(getObjectMapper());
return converter;
}
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
converters.add(responseBodyConverter());
converters.add(messageConverter());
}
}

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