使用带有 hashmap 的 mybatis 结果的不需要的 Json 结果

Question

my sqlmap.xml

<select id="getList" resultType="hashmap">
    SELECT A,B,C,D FROM MYTABLE
</select>

result example

 A       B      C       D
john    123    math    100
jade    456    math     78
janet   789    math     98

controller code

@RequestMapping("/my/result.json")
public @ResponseBody List MyResult(){
    return myDAO.getList();
}

but, json result is looking confused column sort such as,

[
    {"B":123,"C":"math","A":"john","D":100},
    {"B":456,"C":"math","A":"jade","D":78},
    {"B":789,"C":"math","A":"janet","D":98}
]

I want get result with sql with defined Column names and index. but in result, it's different column name index between sql and hashmap. Any idea how to get json result same as sql result?

Answer 1

To solve this issue, in sqlmap, just set the resultType to java.util.LinkedHashMap :

<select id="getList" resultType="java.util.LinkedHashMap">
    SELECT A,B,C,D FROM MYTABLE
</select>

Answer 2

I have the same issue. I have set the resultType ="java.util.LinkedHashMap" already. But the list returned still out of order. Why?