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android Json Gson FastJson 解析
一 Json
xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <Button android:id="@+id/person" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="解析Person数据" /> <Button android:id="@+id/persons" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="解析List嵌套Person数据" /> <Button android:id="@+id/liststring" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="解析List嵌套String数据" /> <Button android:id="@+id/listmap" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="解析ListMap数据" /></LinearLayout>
java
Main.java
package com.android.myjson;import java.util.List;import java.util.Map;import com.android.myjson.domain.Person;import com.android.myjson.http.HttpUtils;import com.android.myjson.json.JsonTools;import android.app.Activity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class Main extends Activity implements OnClickListener { /** Called when the activity is first created. */ private Button person, persons, liststring, listmap; private static final String TAG = "Main"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); person = (Button) this.findViewById(R.id.person); persons = (Button) this.findViewById(R.id.persons); liststring = (Button) this.findViewById(R.id.liststring); listmap = (Button) this.findViewById(R.id.listmap); person.setOnClickListener(this); persons.setOnClickListener(this); liststring.setOnClickListener(this); listmap.setOnClickListener(this); } @Override public void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()) { case R.id.person: String path = "http://192.168.11.249:8080/jsonProject/servlet/JsonAction?action_flag=person"; String jsonString = HttpUtils.getJsonContent(path); Person person = JsonTools.getPerson("person", jsonString); Log.i(TAG, person.toString()); break; case R.id.persons: String path2 = "http://192.168.11.249:8080/jsonProject/servlet/JsonAction?action_flag=persons"; String jsonString2 = HttpUtils.getJsonContent(path2); List<Person> list2 = JsonTools.getPersons("persons", jsonString2); Log.i(TAG, list2.toString()); break; case R.id.liststring: String path3 = "http://192.168.11.249:8080/jsonProject/servlet/JsonAction?action_flag=liststring"; String jsonString3 = HttpUtils.getJsonContent(path3); List<String> list3 = JsonTools.getList("liststring", jsonString3); Log.i(TAG, list3.toString()); break; case R.id.listmap: String path4 = "http://192.168.11.249:8080/jsonProject/servlet/JsonAction?action_flag=listmap"; String jsonString4 = HttpUtils.getJsonContent(path4); List<Map<String, Object>> list4 = JsonTools.listKeyMaps("listmap", jsonString4); Log.i(TAG, list4.toString()); break; } }}
Person.java
1 package com.android.myjson.domain; 2 3 public class Person { 4 5 private int id; 6 private String name; 7 8 public Person(int id, String name, String address) { 9 super();10 this.id = id;11 this.name = name;12 this.address = address;13 }14 15 private String address;16 17 public int getId() {18 return id;19 }20 21 @Override22 public String toString() {23 return "Person [address=" + address + ", id=" + id + ", name=" + name24 + "]";25 }26 27 public void setId(int id) {28 this.id = id;29 }30 31 public String getName() {32 return name;33 }34 35 public void setName(String name) {36 this.name = name;37 }38 39 public String getAddress() {40 return address;41 }42 43 public void setAddress(String address) {44 this.address = address;45 }46 47 public Person() {48 // TODO Auto-generated constructor stub49 }50 51 }
HttpUtils.java
1 package com.android.myjson.http; 2 3 import java.io.ByteArrayOutputStream; 4 import java.io.IOException; 5 import java.io.InputStream; 6 import java.net.HttpURLConnection; 7 import java.net.URL; 8 9 public class HttpUtils {10 11 public HttpUtils() {12 // TODO Auto-generated constructor stub13 }14 15 public static String getJsonContent(String url_path) {16 try {17 URL url = new URL(url_path);18 HttpURLConnection connection = (HttpURLConnection) url19 .openConnection();20 connection.setConnectTimeout(3000);21 connection.setRequestMethod("GET");22 connection.setDoInput(true);23 int code = connection.getResponseCode();24 if (code == 200) {25 return changeInputStream(connection.getInputStream());26 }27 } catch (Exception e) {28 // TODO: handle exception29 }30 return "";31 }32 33 private static String changeInputStream(InputStream inputStream) {34 // TODO Auto-generated method stub35 String jsonString = "";36 ByteArrayOutputStream outputStream = new ByteArrayOutputStream();37 int len = 0;38 byte[] data = http://www.mamicode.com/new byte[1024];39 try {40 while ((len = inputStream.read(data)) != -1) {41 outputStream.write(data, 0, len);42 }43 jsonString = new String(outputStream.toByteArray());44 } catch (IOException e) {45 // TODO Auto-generated catch block46 e.printStackTrace();47 }48 return jsonString;49 }50 }
JsonTools.java
1 package com.android.myjson.json; 2 3 import java.util.ArrayList; 4 import java.util.HashMap; 5 import java.util.Iterator; 6 import java.util.List; 7 import java.util.Map; 8 9 import org.json.JSONArray; 10 import org.json.JSONObject; 11 12 import com.android.myjson.domain.Person; 13 14 /** 15 * 完成对json数据的解析 16 * 17 * @author jack 18 * 19 */ 20 public class JsonTools { 21 22 public JsonTools() { 23 // TODO Auto-generated constructor stub 24 } 25 26 public static Person getPerson(String key, String jsonString) { 27 Person person = new Person(); 28 try { 29 JSONObject jsonObject = new JSONObject(jsonString); 30 JSONObject personObject = jsonObject.getJSONObject("person"); 31 person.setId(personObject.getInt("id")); 32 person.setName(personObject.getString("name")); 33 person.setAddress(personObject.getString("address")); 34 } catch (Exception e) { 35 // TODO: handle exception 36 } 37 return person; 38 } 39 40 public static List<Person> getPersons(String key, String jsonString) { 41 List<Person> list = new ArrayList<Person>(); 42 try { 43 JSONObject jsonObject = new JSONObject(jsonString); 44 // 返回json的数组 45 JSONArray jsonArray = jsonObject.getJSONArray(key); 46 for (int i = 0; i < jsonArray.length(); i++) { 47 JSONObject jsonObject2 = jsonArray.getJSONObject(i); 48 Person person = new Person(); 49 person.setId(jsonObject2.getInt("id")); 50 person.setName(jsonObject2.getString("name")); 51 person.setAddress(jsonObject2.getString("address")); 52 list.add(person); 53 } 54 } catch (Exception e) { 55 // TODO: handle exception 56 } 57 return list; 58 } 59 60 public static List<String> getList(String key, String jsonString) { 61 List<String> list = new ArrayList<String>(); 62 try { 63 JSONObject jsonObject = new JSONObject(jsonString); 64 JSONArray jsonArray = jsonObject.getJSONArray(key); 65 for (int i = 0; i < jsonArray.length(); i++) { 66 String msg = jsonArray.getString(i); 67 list.add(msg); 68 } 69 } catch (Exception e) { 70 // TODO: handle exception 71 } 72 return list; 73 } 74 75 public static List<Map<String, Object>> listKeyMaps(String key, 76 String jsonString) { 77 List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); 78 try { 79 JSONObject jsonObject = new JSONObject(jsonString); 80 JSONArray jsonArray = jsonObject.getJSONArray(key); 81 for (int i = 0; i < jsonArray.length(); i++) { 82 JSONObject jsonObject2 = jsonArray.getJSONObject(i); 83 Map<String, Object> map = new HashMap<String, Object>(); 84 Iterator<String> iterator = jsonObject2.keys(); 85 while (iterator.hasNext()) { 86 String json_key = iterator.next(); 87 Object json_value =http://www.mamicode.com/ jsonObject2.get(json_key); 88 if (json_value =http://www.mamicode.com/= null) { 89 json_valuehttp://www.mamicode.com/= ""; 90 } 91 map.put(json_key, json_value); 92 } 93 list.add(map); 94 } 95 } catch (Exception e) { 96 // TODO: handle exception 97 } 98 return list; 99 }100 }
android Json Gson FastJson 解析
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