Android JSON,Gson,fastjson实现比较
16lz
2021-01-23
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <TableLayout android:layout_width="wrap_content" android:layout_height="match_parent" > <TableRow> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="org.json" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="fastjson" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="gson" /> </TableRow> <TableRow> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <Button android:id="@+id/person" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="person" /> <Button android:id="@+id/persons" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="persons" /> <Button android:id="@+id/stringList" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="stringList" /> <Button android:id="@+id/listMap" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="listMap" /> <Button android:id="@+id/raw" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="Self" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <Button android:id="@+id/person2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="person" /> <Button android:id="@+id/persons2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="persons" /> <Button android:id="@+id/stringList2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="stringList" /> <Button android:id="@+id/listMap2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="listMap" /> <Button android:id="@+id/raw2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="Self" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <Button android:id="@+id/person3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="person" /> <Button android:id="@+id/persons3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="persons" /> <Button android:id="@+id/stringList3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="stringList" /> <Button android:id="@+id/listMap3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="listMap" /> <Button android:id="@+id/raw3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="Self" /> </LinearLayout> </TableRow> </TableLayout> <Button android:id="@+id/rawString" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="click" android:text="RawString" /> <TextView android:id="@+id/tvShow" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" /></LinearLayout>
Manifest.xml
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.netjson" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" /> <uses-permission android:name="android.permission.INTERNET" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="com.example.netjson.MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application></manifest>MainActivity.java
package com.example.netjson;import java.io.InputStream;import java.util.ArrayList;import java.util.Date;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;import org.json.JSONStringer;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.TypeReference;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.app.Activity;import android.util.Log;import android.view.Menu;import android.view.View;import android.widget.TextView;import com.google.gson.Gson;import com.google.gson.reflect.TypeToken;public class MainActivity extends Activity { String PATH = "http://192.168.0.102:7020/JSON.aspx"; String TAG = "JSON"; TextView tvShow; Handler handler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.what) { case 0x123: tvShow.setText(msg.obj.toString()); Log.i(TAG, msg.obj.toString()); break; } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tvShow = (TextView) findViewById(R.id.tvShow); } public void click(final View v) { final int vId = v.getId(); new Thread() { public void run() { asynCall(vId); } }.start(); } private void asynCall(int viewId) { String jsonStr = ""; switch (viewId) { case R.id.person: String path1 = PATH + "?action_flag=person"; String jsonString1 = HTTPUtils.getJsonContent(path1); Person person = JSONTool.getPerson(jsonString1); jsonStr = person.toString(); break; case R.id.persons: String path2 = PATH + "?action_flag=persons"; String jsonString2 = HTTPUtils.getJsonContent(path2); List<Person> list2 = JSONTool.getPersons(jsonString2); jsonStr = list2.toString(); break; case R.id.stringList: String path3 = PATH + "?action_flag=stringList"; String jsonString3 = HTTPUtils.getJsonContent(path3); List<String> list3 = JSONTool.getList(jsonString3); jsonStr = list3.toString(); break; case R.id.listMap: String path4 = PATH + "?action_flag=listMap"; String jsonString4 = HTTPUtils.getJsonContent(path4); List<Map<String, Object>> list4 = JSONTool.getListMap(jsonString4); jsonStr = list4.toString(); break; case R.id.raw: List<Map<String, Object>> list = getListMap(); JSONObject jo = new JSONObject(); try { jo.put("list", list); } catch (JSONException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } String jStr = jo.toString(); list.clear(); try { JSONObject jsonObject = new JSONObject(jStr); JSONArray jsonArray = jsonObject.getJSONArray("list"); for (int i = 0; i < jsonArray.length(); i++) { JSONObject jsonObject2 = jsonArray.getJSONObject(i); Map<String, Object> map = new HashMap<String, Object>(); Iterator<String> iterator = jsonObject2.keys(); while (iterator.hasNext()) { String json_key = iterator.next(); Object json_value = jsonObject2.get(json_key); if (json_value == null) { json_value = ""; } map.put(json_key, json_value); } list.add(map); } } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } jsonStr = list.toString(); break; case R.id.person2: String path21 = PATH + "?action_flag=person"; String jsonString21 = HTTPUtils.getJsonContent(path21); Person person2 = FastJsonTools .getPerson(jsonString21, Person.class); jsonStr = person2.toString(); break; case R.id.persons2: String path22 = PATH + "?action_flag=persons"; String jsonString22 = HTTPUtils.getJsonContent(path22); List<Person> list22 = FastJsonTools.getPersons(jsonString22, Person.class); jsonStr = list22.toString(); break; case R.id.stringList2: String path23 = PATH + "?action_flag=stringList"; String jsonString23 = HTTPUtils.getJsonContent(path23); List<String> list23 = FastJsonTools.getPersons(jsonString23, String.class); jsonStr = list23.toString(); break; case R.id.listMap2: String path24 = PATH + "?action_flag=listMap"; String jsonString24 = HTTPUtils.getJsonContent(path24); List<Map<String, Object>> list24 = FastJsonTools .getListMap(jsonString24); jsonStr = list24.toString(); break; case R.id.raw2: List<Map<String, Object>> listt = getListMap(); String jStrt = JSON.toJSONString(listt); List<Map<String, Object>> l = JSON.parseObject(jStrt, new TypeReference<List<Map<String, Object>>>() { }); jsonStr = l.toString(); break; case R.id.person3: String path31 = PATH + "?action_flag=person"; String jsonString31 = HTTPUtils.getJsonContent(path31); Person person3 = GsonTools.getPerson(jsonString31, Person.class); jsonStr = person3.toString(); break; case R.id.persons3: String path32 = PATH + "?action_flag=persons"; String jsonString32 = HTTPUtils.getJsonContent(path32); List<Person> list32 = GsonTools.getPersons(jsonString32, Person.class); jsonStr = list32.toString(); break; case R.id.stringList3: String path33 = PATH + "?action_flag=stringList"; String jsonString33 = HTTPUtils.getJsonContent(path33); List<String> list33 = GsonTools.getList(jsonString33); jsonStr = list33.toString(); break; case R.id.listMap3: String path34 = PATH + "?action_flag=listMap"; String jsonString34 = HTTPUtils.getJsonContent(path34); List<Map<String, Object>> list34 = GsonTools .listKeyMaps(jsonString34); jsonStr = list34.toString(); break; case R.id.raw3: List<Map<String, Object>> listg = getListMap(); Gson gson = new Gson(); String jStrg = gson.toJson(listg); listg.clear(); try { listg = gson.fromJson(jStrg, new TypeToken<List<Map<String, Object>>>() { }.getType()); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } jsonStr = listg.toString(); break; case R.id.rawString: String x; JSONObject obj; try { InputStream is = this.getResources() .openRawResource(R.raw.json); byte[] buffer = new byte[is.available()]; is.read(buffer); String json = new String(buffer, "utf-8"); obj = new JSONObject(json); StringBuilder sb = new StringBuilder(); x = obj.getString("姓名"); sb.append("======姓名========\n" + x); x = obj.getString("性别"); sb.append("\n======性别========\n" + x); x = obj.getString("年龄"); sb.append("\n======年龄========\n" + x); JSONObject obj1 = obj.getJSONObject("学习成绩"); x = obj1.getString("数学"); sb.append("\n======数学========\n" + x); x = obj1.getString("语文"); sb.append("\n======语文========\n" + x); x = obj1.getString("英语"); sb.append("\n======英语========\n" + x); JSONArray array = obj1.getJSONArray("综合"); obj = array.getJSONObject(0); x = obj.getString("文科综合"); sb.append("\n======文科综合========\n" + x); obj = array.getJSONObject(1); x = obj.getString("理科综合"); sb.append("\n======理科综合========\n" + x); JSONStringer s = new JSONStringer(); sb.append("\n======================\n" + s.object().key("a").value("aaa").endObject() .toString()); jsonStr = sb.toString(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } break; } Message msg = new Message(); msg.what = 0x123; msg.obj = jsonStr; handler.sendMessage(msg); } private List<Map<String, Object>> getListMap() { List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); Map<String, Object> map1 = new HashMap<String, Object>(); map1.put("Id", 1001); map1.put("name", "jack"); map1.put("address", "beijing"); Map<String, Object> map2 = new HashMap<String, Object>(); map2.put("id", 1002); map2.put("name", "rose"); map2.put("address", "shanghai");// map2.put("Married", false);// map2.put("Birthday", new Date()); list.add(map1); list.add(map2); return list; } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; }}
Person.java
package com.example.netjson;public class Person { private int id; private String name; private String address; public Person() { super(); } public Person(int id, String name, String addrss) { super(); this.id = id; this.name = name; this.address = addrss; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } @Override public String toString() { return "Person [addrss=" + address + ", id=" + id + ", name=" + name + "]"; }}
HTTPUtils.java
package com.example.netjson;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;public class HTTPUtils { public HTTPUtils() { } public static String getJsonContent(String path) { try { URL url = new URL(path); HttpURLConnection connection = (HttpURLConnection) url .openConnection(); connection.setConnectTimeout(30000); connection.setRequestMethod("GET"); connection.setDoInput(true); int code = connection.getResponseCode(); if (code == 200) { return changeInputStream(connection.getInputStream()); } } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return null; } /** * 将一个输入流转换成指定编码的字符串 * * @param inputStream * @return */ private static String changeInputStream(InputStream inputStream) { String jsonString = ""; ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); int len = 0; byte[] data = new byte[1024]; try { while ((len = inputStream.read(data)) != -1) { outputStream.write(data, 0, len); } jsonString = new String(outputStream.toByteArray()); } catch (IOException e) { e.printStackTrace(); } return jsonString; }}
JOSNTool.java
package com.example.netjson;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;/** * 完成对JSON数据的解析 * * @author wulianghuan * */public class JSONTool { public JSONTool() { } public static String createjsonString(String key, Object value) { JSONObject jsonObject = new JSONObject(); try { jsonObject.put(key, value); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } return jsonObject.toString(); } /** * 获取对象数据 * * @param key * @param jsonString * @return */ public static Person getPerson(String jsonString) { Person person = new Person(); try { JSONObject personObject = new JSONObject(jsonString); person.setId(personObject.getInt("id")); person.setName(personObject.getString("name")); person.setAddress(personObject.getString("address")); } catch (JSONException e) { e.printStackTrace(); } return person; } /** * 获取对象数组数据 * * @param key * @param jsonString * @return */ public static List<Person> getPersons(String jsonString) { List<Person> list = new ArrayList<Person>(); try { JSONArray jsonArray = new JSONArray(jsonString); // 返回json的数组 for (int i = 0; i < jsonArray.length(); i++) { JSONObject jsonObject2 = jsonArray.getJSONObject(i); Person person = new Person(); person.setId(jsonObject2.getInt("id")); person.setName(jsonObject2.getString("name")); person.setAddress(jsonObject2.getString("address")); list.add(person); } } catch (JSONException e) { e.printStackTrace(); } return list; } /** * 获取String数组数据 * * @param key * @param jsonString * @return */ public static List<String> getList(String jsonString) { List<String> list = new ArrayList<String>(); try { JSONArray jsonArray = new JSONArray(jsonString); for (int i = 0; i < jsonArray.length(); i++) { String msg = jsonArray.getString(i); list.add(msg); } } catch (JSONException e) { e.printStackTrace(); } return list; } /** * 获取对象的Map集合数据 * * @param key * @param jsonString * @return */ public static List<Map<String, Object>> getListMap(String jsonString) { List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); try { JSONArray jsonArray = new JSONArray(jsonString); for (int i = 0; i < jsonArray.length(); i++) { JSONObject jsonObject2 = jsonArray.getJSONObject(i); Map<String, Object> map = new HashMap<String, Object>(); Iterator<String> iterator = jsonObject2.keys(); while (iterator.hasNext()) { String json_key = iterator.next(); Object json_value = jsonObject2.get(json_key); if (json_value == null) { json_value = ""; } map.put(json_key, json_value); } list.add(map); } } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } return list; }}
FastJsonTool.java
package com.example.netjson;import java.util.ArrayList;import java.util.List;import java.util.Map;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.TypeReference;public class FastJsonTools { public FastJsonTools() { // TODO Auto-generated constructor stub } /** * @param <T> * @param jsonString * @param cls * @return */ public static <T> T getPerson(String jsonString, Class<T> cls) { T t = null; try { t = JSON.parseObject(jsonString, cls); } catch (Exception e) { e.printStackTrace(); // TODO: handle exception } return t; } /** * 使用Gson进行解析 List<Person> * * @param <T> * @param jsonString * @param cls * @return */ public static <T> List<T> getPersons(String jsonString, Class<T> cls) { List<T> list = new ArrayList<T>(); try { list = JSON.parseArray(jsonString, cls); } catch (Exception e) { } return list; } public static List<Map<String, Object>> getListMap(String jsonString) { List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); try { list = JSON.parseObject(jsonString, new TypeReference<List<Map<String, Object>>>() { }); } catch (Exception e) { e.printStackTrace(); } return list; }}
GsonTool.java
package com.example.netjson;import java.util.ArrayList;import java.util.List;import java.util.Map;import com.google.gson.Gson;import com.google.gson.reflect.TypeToken;;public class GsonTools { public GsonTools() { // TODO Auto-generated constructor stub } /** * @param <T> * @param jsonString * @param cls * @return */ public static <T> T getPerson(String jsonString, Class<T> cls) { T t = null; try { Gson gson = new Gson(); t = gson.fromJson(jsonString, cls); } catch (Exception e) { // TODO: handle exception } return t; } /** * 使用Gson进行解析 List<Person> * * @param <T> * @param jsonString * @param cls * @return */ public static <T> List<T> getPersons(String jsonString, Class<T> cls) { List<T> list = new ArrayList<T>(); try { Gson gson = new Gson(); list = gson.fromJson(jsonString, new TypeToken<List<T>>() { }.getType()); } catch (Exception e) { } return list; } /** * @param jsonString * @return */ public static List<String> getList(String jsonString) { List<String> list = new ArrayList<String>(); try { Gson gson = new Gson(); list = gson.fromJson(jsonString, new TypeToken<List<String>>() { }.getType()); } catch (Exception e) { // TODO: handle exception } return list; } public static List<Map<String, Object>> listKeyMaps(String jsonString) { List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); try { Gson gson = new Gson(); list = gson.fromJson(jsonString, new TypeToken<List<Map<String, Object>>>() { }.getType()); } catch (Exception e) { // TODO: handle exception } return list; }}
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