feign请求第三方接口报错

Question

问题遇到的现象和发生背景 ?

springboot项目 feign请求如下接口
https://jc.zhcw.com/port/client_json.php?callback=jQuery1122008372536432886957_1643370973349&transactionType=10001001&lotteryId=1&issueCount=50&startIssue=&endIssue=&startDate=&endDate=&type=0&pageNum=1&pageSize=30&tt=0.3439049795746998&_=1643370973351

问题相关代码，请勿粘贴截图

由于该php接口返回的Content-Type: application/json charset=utf-8 ，注意中间是空格而不是；号，导致代码执行checkToken方法校验的时候空格不含在TOKEN中导致的报异常，如果兼容这种规则？

版本 spring-core-5.3.9.jar
类 MimeType.java
行 220行
    private void checkToken(String token) {
        for (int i = 0; i < token.length(); i++) {
            char ch = token.charAt(i);
            if (!TOKEN.get(ch)) {
                throw new IllegalArgumentException("Invalid token character '" + ch + "' in token \"" + token + "\"");
            }
        }
    }

异常

Caused by: org.springframework.http.InvalidMediaTypeException: Invalid mime type "application/json charset=utf-8": Invalid token character ' ' in token "json charset=utf-8"
    at org.springframework.http.MediaType.parseMediaType(MediaType.java:620) ~[spring-web-5.3.9.jar:5.3.9]
    at org.springframework.http.HttpHeaders.getContentType(HttpHeaders.java:992) ~[spring-web-5.3.9.jar:5.3.9]
    at org.springframework.web.client.HttpMessageConverterExtractor.getContentType(HttpMessageConverterExtractor.java:136) ~[spring-web-5.3.9.jar:5.3.9]
    at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:93) ~[spring-web-5.3.9.jar:5.3.9]
    at org.springframework.cloud.openfeign.support.SpringDecoder.decode(SpringDecoder.java:57) ~[spring-cloud-openfeign-core-3.0.3.jar:3.0.3]
    at org.springframework.cloud.openfeign.support.ResponseEntityDecoder.decode(ResponseEntityDecoder.java:61) ~[spring-cloud-openfeign-core-3.0.3.jar:3.0.3]
    at feign.optionals.OptionalDecoder.decode(OptionalDecoder.java:36) ~[feign-core-10.12.jar:na]
    at feign.AsyncResponseHandler.decode(AsyncResponseHandler.java:115) ~[feign-core-10.12.jar:na]
    ... 74 common frames omitted
Caused by: org.springframework.util.InvalidMimeTypeException: Invalid mime type "application/json charset=utf-8": Invalid token character ' ' in token "json charset=utf-8"
    at org.springframework.util.MimeTypeUtils.parseMimeTypeInternal(MimeTypeUtils.java:261) ~[spring-core-5.3.9.jar:5.3.9]
    at org.springframework.util.ConcurrentLruCache.get(ConcurrentLruCache.java:107) ~[spring-core-5.3.9.jar:5.3.9]
    at org.springframework.util.MimeTypeUtils.parseMimeType(MimeTypeUtils.java:195) ~[spring-core-5.3.9.jar:5.3.9]
    at org.springframework.http.MediaType.parseMediaType(MediaType.java:617) ~[spring-web-5.3.9.jar:5.3.9]
    ... 81 common frames omitted

Answer 1

自己实现HttpMessageConverter注入到容器，早于正常json的contentType，单独解析这种响应