如何在Java中使用XPath / JsonPath更改json文件中的值

使用Jayways JsonPath，您可以：

private static final Configuration configuration = Configuration.builder()    .jsonProvider(new JacksonJsonNodeJsonProvider())    .mappingProvider(new JacksonMappingProvider())    .build();@Testpublic void a_value_can_be_updated(){    String originalJson = "{n"        + ""session":n"        + "    {n"        + "        "name":"JSESSIONID",n"        + "        "value":"5864FD56A1F84D5B0233E641B5D63B52"n"        + "    },n"        + ""loginInfo":n"        + "    {n"        + "        "loginCount":77,n"        + "        "previousLoginTime":"2014-12-02T11:11:58.561+0530"n"        + "    }n"        + "}";    JsonNode updatedJson = JsonPath.using(configuration).parse(originalJson).set("$.session.name", "MYSESSINID").json();    System.out.println(updatedJson.toString());}

您可以配置默认的JsonProvider，因此不必在所有调用中都传递它。