我要评论springboot中的resttemplate请求存在乱码问题的解决
搜索网上各种解法，最后在不断的一点点对比中，排查到了问题，是resttemplate不支持gzip，对返回的数据不能对gzip自动解压，因此需要去掉header中的accept-encoding
网上提到的另一种解决方式是配置
import org.springframework.context.annotation.bean;
import org.springframework.context.annotation.configuration;
import org.apache.http.client.httpclient;
import org.apache.http.impl.client.closeablehttpclient;
import org.apache.http.impl.client.httpclients;
import org.apache.http.impl.conn.poolinghttpclientconnectionmanager;
import org.springframework.http.httpheaders;
import org.springframework.http.client.httpcomponentsclienthttprequestfactory;
import org.springframework.web.client.resttemplate;
@configuration
public class resttemplateconfig {
@bean
public resttemplate resttemplate() {
// 创建 httpclient
closeablehttpclient httpclient = httpclients.custom()
.setconnectionmanager(new poolinghttpclientconnectionmanager())
.build();
// 配置 requestfactory
httpcomponentsclienthttprequestfactory requestfactory = new httpcomponentsclienthttprequestfactory(httpclient);
resttemplate resttemplate = new resttemplate(requestfactory);
// 添加请求头，告知服务器支持 gzip
resttemplate.getinterceptors().add((request, body, execution) -> {
request.getheaders().add(httpheaders.accept_encoding, "gzip, deflate, br");
return execution.execute(request, body);
});
return resttemplate;
}
}
而实际运行时还是会报错的。
一个解决方案就是 headers.remove(httpheaders.accept_encoding)，但是并不完美。
@getmapping("/**")
public responseentity<string> proxygetrequest(@requestheader httpheaders headers, httpservletrequest request) {
string requesturi = request.getrequesturi().replace("/proxy", "");
string targeturl = "https://pre-youku-prefect-v2.alibaba-inc.com" + requesturi;
headers.remove(httpheaders.accept_encoding); //必须去掉gzip压缩
responseentity<string> response = resttemplate.exchange(targeturl, httpmethod.get, new httpentity<>(headers), string.class);
return responseentity.status(response.getstatuscode()).body(response.getbody());
}
最终原因
再深入分析后，发现实现代理时，应返回字节流，而不能是字符流，就能完美的实现代理功能
@restcontroller
@requestmapping("/proxy")
public class proxycontroller {
private final resttemplate resttemplate;
public proxycontroller(resttemplate resttemplate) {
this.resttemplate = resttemplate;
}
@getmapping("/**")
public responseentity<byte[]> proxygetrequest(@requestheader httpheaders headers, httpservletrequest request) {
string requesturi = request.getrequesturi().replace("/proxy", "");
string targeturl = "https://xxx.com" + requesturi;
responseentity<byte[]> response = resttemplate.exchange(targeturl, httpmethod.get, new httpentity<>(headers), byte[].class);
return response;
}
@postmapping("/**")
public responseentity<byte[]> proxypostrequest(@requestheader httpheaders headers, @requestbody string body, httpservletrequest request) {
string requesturi = request.getrequesturi().replace("/proxy", "");
string targeturl = "https://xxx.com" + requesturi;
responseentity<byte[]> response = resttemplate.exchange(targeturl, httpmethod.post, new httpentity<>(body, headers), byte[].class);
return response;
}
}
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