java json单引号,配置Jackson以反序列化单引号（无效）JSON

I am a newbie to using jackson library.

I am trying to do this [see below], and it is throwing error.

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 .....

Exception:

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)

While the same thing works if I replace the single quote(') with double quote(").

解决方案

It's not valid JSON, but you can tell Jackson to allow it. Here's how.

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"}