【移动应用开发技术】android中怎么解析原生JSON

【移动应用开发技术】android中怎么解析原生JSON

android中怎么解析原生JSON，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。JSONObject：JSON数据封装对象JSONArray：JSON数据封装数组<?xml

version="1.0"

encoding="utf-8"?>

<LinearLayout

android:orientation="vertical"

xmlns:android="/apk/res/android"

xmlns:app="/apk/res-auto"

xmlns:tools="/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context="net.bwie.jsonobject.MainActivity">

<Button

android:id="@+id/read_file_btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="读取文件中的json数据"/>

<Button

android:id="@+id/parse_btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="解析json数据"/>

<TextView

android:id="@+id/result_tv"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Hello

World!"/>

</LinearLayout>Bean:package

net.bwie.jsonobject;

import

java.util.List;

public

class

ShoppingBean

{

private

String

msg;

private

InfoBean

info;

public

String

getMsg()

{

return

msg;

}

public

void

setMsg(String

msg)

{

this.msg

=

msg;

}

public

InfoBean

getInfo()

{

return

info;

}

public

void

setInfo(InfoBean

info)

{

=

info;

}

@Override

public

String

toString()

{

return

"ShoppingBean{"

+

"msg='"

+

msg

+

'\''

+

",

info="

+

info

+

'}';

}

public

static

class

InfoBean

{

private

int

cat_id;

private

List<GoodsBean>

good;

private

boolean

url;

public

int

getCat_id()

{

return

cat_id;

}

public

void

setCat_id(int

cat_id)

{

this.cat_id

=

cat_id;

}

public

List<GoodsBean>

getGood()

{

return

good;

}

public

void

setGood(List<GoodsBean>

good)

{

this.good

=

good;

}

public

boolean

isUrl()

{

return

url;

}

public

void

setUrl(boolean

url)

{

this.url

=

url;

}

@Override

public

String

toString()

{

return

"InfoBean{"

+

"cat_id="

+

cat_id

+

",

good="

+

good

+

",

url="

+

url

+

'}';

}

public

static

class

GoodsBean

{

private

long

add_time;

private

String

colorcode;

private

String

currency_price;

private

String

description;

private

String

goods_id;

private

String

goods_name;

private

String

thumb;

public

long

getAdd_time()

{

return

add_time;

}

public

void

setAdd_time(long

add_time)

{

this.add_time

=

add_time;

}

public

String

getColorcode()

{

return

colorcode;

}

public

void

setColorcode(String

colorcode)

{

this.colorcode

=

colorcode;

}

public

String

getCurrency_price()

{

return

currency_price;

}

public

void

setCurrency_price(String

currency_price)

{

this.currency_price

=

currency_price;

}

public

String

getDescription()

{

return

description;

}

public

void

setDescription(String

description)

{

this.description

=

description;

}

public

String

getGoods_id()

{

return

goods_id;

}

public

void

setGoods_id(String

goods_id)

{

this.goods_id

=

goods_id;

}

public

String

getGoods_name()

{

return

goods_name;

}

public

void

setGoods_name(String

goods_name)

{

this.goods_name

=

goods_name;

}

public

String

getThumb()

{

return

thumb;

}

public

void

setThumb(String

thumb)

{

this.thumb

=

thumb;

}

@Override

public

String

toString()

{

return

"GoodsBean{"

+

"add_time="

+

add_time

+

",

colorcode='"

+

colorcode

+

'\''

+

",

currency_price='"

+

currency_price

+

'\''

+

",

description='"

+

description

+

'\''

+

",

goods_id='"

+

goods_id

+

'\''

+

",

goods_name='"

+

goods_name

+

'\''

+

",

thumb='"

+

thumb

+

'\''

+

'}';

}

}

}

}Activity:/**

*

1、将json文件存在外部存储中，使用IO流读取文件中的数据

*

2、使用JSONObject解析读取出来的数据

*/

public

class

MainActivity

extends

AppCompatActivity

implements

View.OnClickListener

{

private

String

mJson

=

"";

protected

Button

mReadFileBtn;

protected

Button

mParseBtn;

protected

TextView

mResultTv;

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

super.setContentView(R.layout.activity_main);

initView();

}

@Override

public

void

onClick(View

view)

{

if

(view.getId()

==

R.id.read_file_btn)

{

readFile();

}

else

if

(view.getId()

==

R.id.parse_btn)

{

ShoppingBean

shopping

=

parseJson();

Log.d("1507",

""

+

shopping);

}

}

//

解析JSON数据

//

遇到{}就创建JSONObject，遇到[]就创建JSONArray

private

ShoppingBean

parseJson()

{

ShoppingBean

shopping

=

null;

try

{

JSONObject

rootObject

=

new

JSONObject(mJson);

shopping

=

new

ShoppingBean();

String

msg

=

rootObject.getString("msg");

shopping.setMsg(msg);

JSONObject

infoObject

=

rootObject.getJSONObject("info");

ShoppingBean.InfoBean

info

=

new

ShoppingBean.InfoBean();

shopping.setInfo(info);

int

catId

=

infoObject.getInt("cat_id");

info.setCat_id(catId);

boolean

url

=

infoObject.getBoolean("url");

info.setUrl(url);

JSONArray

goodsArray

=

infoObject.getJSONArray("goods");

List<ShoppingBean.InfoBean.GoodsBean>

goodsList

=

new

ArrayList<>();

info.setGood(goodsList);

for

(int

i

=

0;

i

<

goodsArray.length();

i++)

{

JSONObject

goodsObject

=

goodsArray.getJSONObject(i);

ShoppingBean.InfoBean.GoodsBean

goods

=

new

ShoppingBean.InfoBean.GoodsBean();

long

addTime

=

goodsObject.getLong("add_time");

goods.setAdd_time(addTime);

String

colorCode

=

goodsObject.getString("colorcode");

goods.setColorcode(colorCode);

String

currencyPrice

=

goodsObject.getString("currency_price");

goods.setCurrency_price(currencyPrice);

String

description

=

goodsObject.getString("description");

goods.setDescription(description);

String

goodsName

=

goodsObject.getString("goods_name");

goods.setGoods_name(goodsName);

String

thumb

=

goodsObject.getString("thumb");

goods.setThumb(thumb);

goodsList.add(goods);

}

}

catch

(Exception

e)

{

e.printStackTrace();

}

return

shopping;

}

//

读取文件中的JSON数据

private

void

readFile()

{

//

根目录

//

Environment.getExternalStorageDirectory()

//

外部存储公共路径，例如：DCIM，DOWNLOADS等系统提供的文件夹

//

Environment.getExternalStoragePublicDirectory(类型)

//

外部存储私有路径：Android文件夹

//

context.getExternalFilesDir(null)

//

downloads文件夹路径

String

filePath

=

Environment

.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)

.getAbsolutePath();

String

fileName

=

"json.txt";

File

file

=

new

File(filePath,

fileName);

//

文件字符输入流

//

字缓符输入冲流

BufferedReader

br

=

null;

try

{

br

=

new

BufferedR