从资源中读取json文件并在JAVA中将其转换为json字符串

我在代码中硬编码了这个 JSON 字符串。

String json = "{\n" +
              "    \"id\": 1,\n" +
              "    \"name\": \"Headphones\",\n" +
              "    \"price\": 1250.0,\n" +
              "    \"tags\": [\"home\", \"green\"]\n" +
              "}\n"
;

我想将其移至资源文件夹并从那里读取它， 我怎样才能在JAVA中做到这一点？

根据我的经验，这是从类路径读取文件的最可靠的模式。[1]

Thread.currentThread().getContextClassLoader().getResourceAsStream("YourJsonFile")

它给你一个InputStream[2] 可以传递给大多数 JSON 库。[3]

try(InputStream in=Thread.currentThread().getContextClassLoader().getResourceAsStream("YourJsonFile")){
//pass InputStream to JSON-Library, e.g. using Jackson
    ObjectMapper mapper = new ObjectMapper();
    JsonNode jsonNode = mapper.readValue(in, JsonNode.class);
    String jsonString = mapper.writeValueAsString(jsonNode);
    System.out.println(jsonString);
}
catch(Exception e){
throw new RuntimeException(e);
}

[1] 将文件作为输入流加载的不同方法 https://stackoverflow.com/questions/676250/different-ways-of-loading-a-file-as-an-inputstream

[2] Try With Resources 与 Try-Catch https://stackoverflow.com/questions/26516020/try-with-resources-vs-try-catch

[3] https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core

Hint:不要尝试在内部使用此方法parallelStream或类似的。这将导致异常。