Json string not formatted in browser but formatted in console-CodePudding

I am trying to output object serialized to json like this

@GetMapping("/person")
public String getPerson() throws JsonProcessingException {
    mapper.enable(SerializationFeature.INDENT_OUTPUT);
    System.out.println(mapper.writeValueAsString(person)); //just for debug
    return mapper.writeValueAsString(person);
}

I get what I wish in console:

{
  "name" : "person",
  "age" : 29,
  "listSkills" : [ "s1", "s2", "s3" ],
  "id" : 1,
  "hashCode" : 2145420209
}

but in browser it is printed in one line and just gets different font

{ "name" : "person", "age" : 29, "listSkills" : [ "s1", "s2", "s3" ], "id" : 1, "hashCode" : 2145420209 }

CodePudding user response：

Problems

You expect browser to have the same font(and colors) as console!? (Your expectations "base on wrong assumptions"/you must care)
You don't use @[Rest]Controller as

Key points

Using spring-boot "jacksonObjectMapper" (auto & properties config).
Returning the desired type and not a String.

CodePudding user response：

You can install a json formatter for your browser e.g. for Chrome this one is quite popular: JSON Formatter or you can find a similar one for your browser of choice.

Usually they come with great features such as sintax highlighting, clickable urls, toggles and some more.

CodePudding user response：

In Spring boot, the GET method will produce result with content type of application/json by default.

If you want a formatted string in browsers, set produces to text/plain, aka

@GetMapping(value = "/person", produces = MediaType.TEXT_PLAIN_VALUE)