如何避免杰克逊转义反斜线？

Question

I set "this\\'s my case!" to an object's field.

Calling writeAsString , output is "this\\\\\\'s my case!" .

But I expect "this\\'s my case!" .

How can I get what I want ?

public class CommonUtils {
    public static ObjectMapper objectMapper = new ObjectMapper();
    public static ObjectMapper getObjectMapperInstance(){
        return objectMapper;
    }

    public static void main(String[] args) throws IOException {
        CommonUtils commonUtils = new CommonUtils();
        commonUtils.test();
    }
    public void test() throws IOException {
        List<MyObject> list = new ArrayList<MyObject>();
        String xx = "page://list?params={\"city\"}";
        list.add(new MyObject(1,xx));
    }
    class MyObject{

        public MyObject(int tag,String str){
            this.tag = tag;
            this.str = str;
        }
        int tag;
        String str;

        public int getTag() {
            return tag;
        }

        public void setTag(int tag) {
            this.tag = tag;
        }

        public String getStr() {
            return str;
        }

        public void setStr(String str) {
            this.str = str;
        }
    }
}

Output of above code:

[ { "tag" : 1, "str" : "page://list?params={\\\\"city\\\\"}]

What I want is: [ { "tag" : 1, "str" : "page://list?params={\\"city\\"}]

Answer 1

If you Change the String xx to

String xx = "page://list?params={\\\"city\\\"}"; //page://list?params={\"city\"}

You will get desired result;

[ { "tag" : 1, "str" : "page://list?params={\"city\"}]