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  • feign请求 oauth2授权服务器token接口‘/oauth/token’

    • 授权服务器目标接口
     @RequestMapping(
            value = {"/oauth/token"},
            method = {RequestMethod.POST}
        )
        public ResponseEntity<OAuth2AccessToken> postAccessToken(Principal principal, @RequestParam Map<String, String> parameters){
    ...
    }
    
    • 自定义按照通常的方式编写feign client
        /**
         * 获取jwt 对象
         *
         * @param parameters
         * @return
         * @throws HttpRequestMethodNotSupportedException
         */
        @RequestMapping( value = "/oauth/token",method = RequestMethod.POST)
        ResponseEntity<OAuth2AccessToken> postAccessToken(@RequestBody MultiValueMap<String, String> parameters);
    
    
    • 此时会出现反序列化错误
      Resolved [org.springframework.http.converter.HttpMessageNotReadableException: Invalid JSON input: Cannot deserialize instance of java.util.ArrayList<java.lang.Object>out of VALUE_STRING token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance ofjava.util.ArrayList<java.lang.Object> out of VALUE_STRING token at [Source: (PushbackInputStream); line: 2, column: 17] (through reference chain: org.springframework.util.LinkedMultiValueMap["username"])]

    • feign client接口需改为使用 String类型接收,测试发现Object也可以接收;

     /**
         * 获取jwt 对象
         *
         * @param parameters
         * @return
         * @throws HttpRequestMethodNotSupportedException
         */
        @RequestMapping( value = "/oauth/token",method = RequestMethod.POST)
        String postAccessToken(@RequestBody MultiValueMap<String, String> parameters);
    
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  • 原文地址:https://www.cnblogs.com/jinit/p/14828597.html
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