配置Jackson以反序列化单引号（无效）JSON

Question

我是使用杰克逊图书馆的新手。

我正在尝试执行此操作（请参见下文），并且抛出错误。

String x="{'candidateId':'k','candEducationId':1,'activitiesSocieties':'Activities for cand1'}";
ObjectMapper mapper = new ObjectMapper();

try {
    JsonNode df=mapper.readValue(x,JsonNode.class);
    int i=0;
} catch .....

例外：

org.codehaus.jackson.JsonParseException: Unexpected character (''' (code

39)): was expecting double-quote to start field name
at [Source: java.io.StringReader@1afd1810; line: 1, column: 3]
at
org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1291)

如果我将单引号（’）替换为双引号（“），则同样的事情起作用。

Answer 1

它不是有效的JSON，但是您可以告诉Jackson允许它。这是如何做。

String x = "{'candidateId':'k','candEducationId':1,'activitiesSocieties':'Activities for cand1'}";
ObjectMapper mapper = new ObjectMapper();
mapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);
JsonNode df = mapper.readValue(x, JsonNode.class);
System.out.println(df.toString());
// output: {"candidateId":"k","candEducationId":1,"activitiesSocieties":"Activities for cand1"}