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问题描述
我想将Jackson的 ObjectNode
的内容写入一个字符串,其中UTF-8字符写成ASCII(Unicode转义)。
I would like to write the contents of Jackson's ObjectNode
to a string with the UTF-8 characters written as ASCII (Unicode escaped).
以下是一个示例方法:
Here is a sample method:
private String writeUnicodeString() {
ObjectMapper mapper = new ObjectMapper();
ObjectNode node = mapper.getNodeFactory().objectNode();
node.put("field1", "Maël Hörz");
return node.toString();
}
默认情况下,输出:
{"field1":"Maël Hörz"}
我希望输出的是:
{"field1":"Ma\u00EBl H\u00F6rz"}
我该如何做到这一点?
推荐答案
您应该启用JsonGenerator功能,该功能控制非ASCII字符的转义。下面是一个示例:
You should enable the JsonGenerator feature which controls the escaping of the non-ASCII characters. Here is an example:
ObjectMapper mapper = new ObjectMapper();
mapper.getFactory().configure(JsonGenerator.Feature.ESCAPE_NON_ASCII, true);
ObjectNode node = mapper.getNodeFactory().objectNode();
node.put("field1", "Maël Hörz");
System.out.println(mapper.writeValueAsString(node));
输出为:
{"field1":"Ma\u00EBl H\u00F6rz"}
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