更新时间:2022-04-13 16:47:59
我不确定这是否是最简单的方式,但是...您可以使用 ObjectMapper代码> 使用自定义打印机.如果您修改缩进行为,则可以使用
DefaultPrettyPrinter
.
I am not sure if this is the simplest way to go but... You can use the ObjectMapper
with a custom printer. The DefaultPrettyPrinter
can be used if you modify the indent behaviour.
// Create the mapper
ObjectMapper mapper = new ObjectMapper();
// Setup a pretty printer with an indenter (indenter has 4 spaces in this case)
DefaultPrettyPrinter.Indenter indenter =
new DefaultIndenter(" ", DefaultIndenter.SYS_LF);
DefaultPrettyPrinter printer = new DefaultPrettyPrinter();
printer.indentObjectsWith(indenter);
printer.indentArraysWith(indenter);
// Some object to serialize
Map<String, Object> value = new HashMap<>();
value.put("foo", Arrays.asList("a", "b", "c"));
// Serialize it using the custom printer
String json = mapper.writer(printer).writeValueAsString(value);
// Print it
System.out.println(json);
输出将是:
{
"foo" : [
"a",
"b",
"c"
]
}