Go中如何将json文件的内容映射到struct

Go中如何将json文件的内容映射到struct

 caoxinyiyi 关注

2018.06.29 17:32 字数 56 阅读 253评论 0喜欢 2

前言

工作中由于项目需求的需要，将json文件的内容要映射到struct

1、Json文件内容结构的定义

[
{ "GoMethodName":"BasicTypeBool","GoInputParam":{"BasicType":{"boolParam":true}},"JavaReturnData":{"BasicType":{"boolParam":false}},
  "JavaMethodName":"testbool","JavaTypes":"boolean","ElemKey":"boolParam","JavaMapKey":"testbool","PtrFlag":false}
]

2、Struct结构体的定义

type BasicType struct {
    BoolParam  bool  `json:"boolParam"`
    ByteParam  byte  `json:"byteParam"`
    Uint8Param  uint8  `json:"uint8Param"`
    CharParam  string  `json:"charParam"`
    ShortParam  int16 `json:"shortParam"`
    IntParam    int32  `json:"intParam"`
    LongParam   int64  `json:"longParam"`
    Long2Param   int  `json:"long2Param"`
    FloatParam  float32  `json:"floatParam"`
    DoubleParam  float64  `json:"doubleParam"`
    StringParam  string  `json:"stringParam"`
}


type DataJsonStruct struct {
    GoMethodName string
    GoInputParam struct {
        BasicType BasicType  `json:"BasicType"`
    } `json:"GoInputParam"`
    JavaReturnData struct {
        BasicType BasicType  `json:"BasicType"`
    } `json:"JavaReturnData"`
    JavaMethodName string
    JavaTypes      string
    ElemKey        string
    JavaMapKey  string
    PtrFlag        bool
}

3、如何映射代码

package Test
import (
"fmt"
"encoding/json"
)


//将json解析到struct
func JsonParseToStruct(jsonPath string) []DataJsonStruct{

    var dat []DataJsonStruct

    //基本类型测试数据json
    DataJsonStruct := readTestDataFile(jsonPath)
    fmt.Println(DataJsonStruct)
    //解析json
    err := json. Unmarshal ( [ ] byte (DataJsonStruct), &dat )
    if err != nil {
        fmt. Println ( "error:" , err )
    }
    fmt. Printf ( "%+v" , dat )

    for _, v := range dat {
        fmt.Printf("\n %v",v)
    }

    return dat
}


//读取测试数据的文件内容
func  readTestDataFile(path string) string{
    fi, err := os.Open(path)
    if err != nil {
        panic(err)
    }
    defer fi.Close()
    fd, err := ioutil.ReadAll(fi)
    return string(fd)
}