[英]Write ObjectNode to JSON String with UTF-8 Characters to Escaped ASCII
I would like to write the contents of Jackson's ObjectNode
to a string with the UTF-8 characters written as ASCII (Unicode escaped).我想将 Jackson 的
ObjectNode
的内容写入一个字符串,其中 UTF-8 字符写为 ASCII(Unicode 转义)。
Here is a sample method:这是一个示例方法:
private String writeUnicodeString() {
ObjectMapper mapper = new ObjectMapper();
ObjectNode node = mapper.getNodeFactory().objectNode();
node.put("field1", "Maël Hörz");
return node.toString();
}
By default, this outputs:默认情况下,此输出:
{"field1":"Maël Hörz"}
What I would like it to output is:我希望它输出的是:
{"field1":"Ma\u00EBl H\u00F6rz"}
How can I accomplish this?我怎样才能做到这一点?
You should enable the JsonGenerator feature which controls the escaping of the non-ASCII characters.您应该启用控制非 ASCII 字符转义的 JsonGenerator 功能。 Here is an example:
下面是一个例子:
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));
The output is:输出是:
{"field1":"Ma\u00EBl H\u00F6rz"}
不推荐使用 JsonGenerator 使用 JsonWriteFeature 而不是它
mapper.getFactory().configure(JsonWriteFeature.ESCAPE_NON_ASCII.mappedFeature(), true);
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