来自 RestTemplate 的 API 的响应需要传递给请求正文中的另一个。 但它因 400 错误而失败

Question

I am trying to pass the response of one API which may contain \n or quotes(") to another API using RestTemplate.

But it is always failing with 400 error. I guess the post body is broken because of newline and quotes in it.

Can you please suggest how to make it work?

This is the exception I am getting and my request body looks like:

{"to":"test@test.com","replyTo":"test@test.com","body":"call\n"}

Request URL: http://localhost:8080/endpoint/test, action: POST, status: 400
org.springframework.web.client.HttpClientErrorException: 400 null
    at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:94)
    at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:79)
    at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63)
    at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:775)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:728)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:702)
    at org.springframework.web.client.RestTemplate.exchange(RestTemplate.j

Answer 1

You need need to create a model like this:

class MyModel {
  String to;
  String replyTo;
  String body;
  //getters and setters......
}

marshal string into the object like this:

String requestBody="";//{"to":"test@test.com","replyTo":"test@test.com","body":"call\n"}
MyModel myModel=new ObjectMapper().readValue(requestBody, MyModel);

now that you have an object, remove newline characters from the body property. Like this:

String s=myModel.getBody().replace('\n', ' ');//you can choose to replace "\n" with whatever you want
myModel.setBody(s);

after that you can deserialise the object like this:

requestBody=new ObjectMapper().writeValueAsString(myModel);

the send the requestBody