我正在编写一个自定义序列化器,以将double值转换为JSON对象中的字符串。到目前为止我的代码:基本类型的Jackson序列化器
public String toJson(Object obj) throws IOException {
ObjectMapper mapper = new ObjectMapper();
SimpleModule module = new SimpleModule("DoubleSerializer", new Version(1, 0, 0, ""));
module.addSerializer(Double.class, new DoubleSerializer());
mapper.registerModule(module);
return mapper.writeValueAsString(obj);
}
public class DoubleSerializer extends JsonSerializer<Double> {
@Override
public void serialize(Double value, JsonGenerator jgen,
SerializerProvider provider) throws IOException,
JsonProcessingException {
String realString = new BigDecimal(value).toPlainString();
jgen.writeString(realString);
}
}
这工作完全正常双(类成员),但双(基本型)的成员不起作用。例如,
public void test() throws IOException {
JsonMaker pr = new JsonMaker();
TestClass cl = new TestClass();
System.out.println(pr.toJson(cl));
}
class TestClass {
public Double x;
public double y;
public TestClass() {
x = y = 1111142143543543534645145325d;
}
}
返回:{ “X”: “1111142143543543565865975808”, “Y”:1.1111421435435436E27}
有没有一种方法,使其遵循相同的行为,对于两种情况?
哇!不能相信我在这上面失去了一个小时:)谢谢! – mihsathe 2014-09-20 04:06:24