Java 使用 UTF-8 字符将 ObjectNode 写入 JSON 字符串以转义 ASCII
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Write ObjectNode to JSON String with UTF-8 Characters to Escaped ASCII
提问by ricb
I would like to write the contents of Hymanson's ObjectNodeto a string with the UTF-8 characters written as ASCII (Unicode escaped).
我想将 Hymanson 的内容写入ObjectNode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", "Ma?l H?rz");
return node.toString();
}
By default, this outputs:
默认情况下，此输出：
{"field1":"Ma?l H?rz"}
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？
采纳答案by Alexey Gavrilov
You should enable the JsonGenerator feature which controls the escaping of the non-ASCII characters. Here is an example:
您应该启用控制非 ASCII 字符转义的 JsonGenerator 功能。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", "Ma?l H?rz");
System.out.println(mapper.writeValueAsString(node));
The output is:
输出是：
{"field1":"Ma\u00EBl H\u00F6rz"}
回答by Kailas010
JsonGenerator is deprecated use JsonWriteFeature instead of it
不推荐使用 JsonGenerator 使用 JsonWriteFeature 而不是它
mapper.getFactory().configure(JsonWriteFeature.ESCAPE_NON_ASCII.mappedFeature(), true);
