android 将数据转换成JSON数据格式并使用JSONObject解析JSON格式的数据

比起XML文件解析，JSON数据解析的有点在于他的体积小，在网络上传输的时候可以更省流量。同时它也有缺点，Json数据的语义性较差，看起来没有XML直观。现在JSON已经被大多数开发人员所接受，在网络数据的传输当中应用非常广泛。现在做的项目需要把数据转换成下面的格式：

{"PatitentData":[{"patient_mhistory":"高血压","patient_insomnia":"六个月","patient_gender":"男","patient_name":"张三","current_date":"2015.4.10","patient_phone":"1243543546","patient_scde":"大学本科","patient_age":"56","patient_postion":"农民"}],"sleepDiary":[{"day07":"1243535","day06":"12324343","day05":"1243434","day04":"2435434521","day01":"121422343","day02":"1231421454","day03":"1243243"}],"testData":[{"isi":"12324324","hama":"122543543","hamd":"2334255","sleepness":"1243345432","pqsi":"124332144452"}]}

首先建立 PatientInformation.java、PatientTest.java和SleepDiary这三个类，主要是用来封装一些信息

PatientInformation.java

package com.zghaikun.json;

public class PatientInformation {
private int id;
private String patient_name;
private String patient_gender;
private String patient_age;
private String patient_postion;
private String patient_scde;
private String patient_insomnia;
private String patient_mhistory;
private String patient_phone;
private String current_date;
private int patient_hamd;
public PatientInformation() {
super();
}
public PatientInformation(int patient_hamd) {
super();
this.patient_hamd = patient_hamd;
}
public PatientInformation( String current_date,String patient_name, String patient_gender,
String patient_age, String patient_postion, String patient_scde,
String patient_insomnia, String patient_mhistory,
String patient_phone) {
super();
this.current_date = current_date;
this.patient_name = patient_name;
this.patient_gender = patient_gender;
this.patient_age = patient_age;
this.patient_postion = patient_postion;
this.patient_scde = patient_scde;
this.patient_insomnia = patient_insomnia;
this.patient_mhistory = patient_mhistory;
this.patient_phone = patient_phone;

}
public PatientInformation(int id, String current_date,String patient_name, String patient_gender,
String patient_age, String patient_postion, String patient_scde,
String patient_insomnia, String patient_mhistory,
String patient_phone) {
super();
this.id = id;
this.current_date = current_date;
this.patient_name = patient_name;
this.patient_gender = patient_gender;
this.patient_age = patient_age;
this.patient_postion = patient_postion;
this.patient_scde = patient_scde;
this.patient_insomnia = patient_insomnia;
this.patient_mhistory = patient_mhistory;
this.patient_phone = patient_phone;

}
public int getPatient_hamd() {
return patient_hamd;
}
public void setPatient_hamd(int patient_hamd) {
this.patient_hamd = patient_hamd;
}
public String getPatient_age() {
return patient_age;
}
public void setPatient_age(String patient_age) {
this.patient_age = patient_age;
}
public String getCurrentdate() {
return current_date;
}
public void setCurrentdate(String currentdate) {
this.current_date = currentdate;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getPatient_name() {
return patient_name;
}
public void setPatient_name(String patient_name) {
this.patient_name = patient_name;
}
public String getPatient_gender() {
return patient_gender;
}
public void setPatient_gender(String patient_gender) {
this.patient_gender = patient_gender;
}
public String getPatient_postion() {
return patient_postion;
}
public void setPatient_postion(String patient_postion) {
this.patient_postion = patient_postion;
}
public String getPatient_scde() {
return patient_scde;
}
public void setPatient_scde(String patient_scde) {
this.patient_scde = patient_scde;
}
public String getPatient_insomnia() {
return patient_insomnia;
}
public void setPatient_insomnia(String patient_insomnia) {
this.patient_insomnia = patient_insomnia;
}
public String getPatient_mhistory() {
return patient_mhistory;
}
public void setPatient_mhistory(String patient_mhistory) {
this.patient_mhistory = patient_mhistory;
}
public String getPatient_phone() {
return patient_phone;
}
public void setPatient_phone(String patient_phone) {
this.patient_phone = patient_phone;
}
}

PatientTest.java

package com.zghaikun.json;

public class PatientTest {
int id;
String pqsi;
String sleepness;
String hama;
String hamd;
String isi;
public String getIsi() {
return isi;
}
public void setIsi(String isi) {
this.isi = isi;
}
public PatientTest() {
super();
}
public PatientTest(int id, String pqsi, String sleepness, String hama,
String hamd,String isi) {
super();
this.id = id;
this.pqsi = pqsi;
this.sleepness = sleepness;
this.hama = hama;
this.hamd = hamd;
this.isi = isi;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getPqsi() {
return pqsi;
}
public void setPqsi(String pqsi) {
this.pqsi = pqsi;
}
public String getSleepness() {
return sleepness;
}
public void setSleepness(String sleepness) {
this.sleepness = sleepness;
}
public String getHama() {
return hama;
}
public void setHama(String hama) {
this.hama = hama;
}
public String getHamd() {
return hamd;
}
public void setHamd(String hamd) {
this.hamd = hamd;
}

}

SleepDiary.java

package com.zghaikun.json;

public class SleepDiary {
private int id;
private String day01;
private String day02;
private String day03;
private String day04;
private String day05;
private String day06;
private String day07;
public SleepDiary(String day01, String day02, String day03, String day04,
String day05, String day06, String day07) {
super();
this.day01 = day01;
this.day02 = day02;
this.day03 = day03;
this.day04 = day04;
this.day05 = day05;
this.day06 = day06;
this.day07 = day07;
}
public SleepDiary(int id, String day01, String day02, String day03,
String day04, String day05, String day06, String day07) {
super();
this.id = id;
this.day01 = day01;
this.day02 = day02;
this.day03 = day03;
this.day04 = day04;
this.day05 = day05;
this.day06 = day06;
this.day07 = day07;
}
public SleepDiary() {
super();
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getDay01() {
return day01;
}
public void setDay01(String day01) {
this.day01 = day01;
}
public String getDay02() {
return day02;
}
public void setDay02(String day02) {
this.day02 = day02;
}
public String getDay03() {
return day03;
}
public void setDay03(String day03) {
this.day03 = day03;
}
public String getDay04() {
return day04;
}
public void setDay04(String day04) {
this.day04 = day04;
}
public String getDay05() {
return day05;
}
public void setDay05(String day05) {
this.day05 = day05;
}
public String getDay06() {
return day06;
}
public void setDay06(String day06) {
this.day06 = day06;
}
public String getDay07() {
return day07;
}
public void setDay07(String day07) {
this.day07 = day07;
}

}

一个布局文件，由两个按键和一个textView组成，

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>

<Button
android:id="@+id/bt2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="把普通数据换成json数据格式的string"/>

<Button
android:id="@+id/bt4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="解析带集合的json字符串"/>
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="30sp"
android:text="@string/hello_world" />

</LinearLayout>

Mainactivity.java

package com.zghaikun.json;

import java.util.ArrayList;
import java.util.List;

import org.apache.axis2.AxisFault;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

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;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener {
private Button button1, button2, button3, button4;  //4个按钮
private TextView textView;  //显示处理结果的textview
private List<PatientInformation> patientInfos; //保存数据的集合
private List<PatientTest> patientTest;
private List<SleepDiary> sleepDiarys;
private JSONObject object;  //JSONObject对象，处理一个一个的对象
private JSONObject objPatientInfo;
private JSONObject objTestData;
private JSONObject objSleepDiary;
private JSONArray jsonArrayPatientInfo;//JSONObject对象，处理一个一个集合或者数组
private JSONArray jsonArrayTestData;//JSONObject对象，处理一个一个集合或者数组
private JSONArray jsonArraySleepDiary;//JSONObject对象，处理一个一个集合或者数组
private String jsonString;  //保存带集合的json字符串
private String jsonString2;//不带集合的json字符串
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView(); //初始化控件
initDate(); //初始化数据
setListener(); //绑定监事件

//		try {
//			SimpleServiceStub stub  = new SimpleServiceStub();
//			SimpleServiceStub.GetGreeting gg = new SimpleServiceStub.GetGreeting();
//			gg.setParam0("比尔");
//			System.out.println(stub.getGreeting(gg).local_return);
//			System.out.println(stub.getPrice().local_return);
//		} catch (Exception e) {
//			// TODO Auto-generated catch block
//			e.printStackTrace();
//		}

}
private void initView() {
// TODO Auto-generated method stub
button2 = (Button) findViewById(R.id.bt2);
button4 = (Button) findViewById(R.id.bt4);
textView = (TextView) findViewById(R.id.text);
}

private void initDate() {
//设置了两个对象
patientInfos = new ArrayList<PatientInformation>();
PatientInformation pateintInfo = new PatientInformation();
pateintInfo.setPatient_name("张三");
pateintInfo.setPatient_gender("男");
pateintInfo.setPatient_age("56");
pateintInfo.setPatient_postion("农民");
pateintInfo.setPatient_scde("大学本科");
pateintInfo.setPatient_insomnia("六个月");
pateintInfo.setPatient_mhistory("高血压");
pateintInfo.setPatient_phone("1243543546");
pateintInfo.setCurrentdate("2015.4.10");
patientInfos.add(pateintInfo);

//测试数据
patientTest = new ArrayList<PatientTest>();
PatientTest PatienData = new PatientTest();
PatienData.setPqsi("124332144452");
PatienData.setSleepness("1243345432");
PatienData.setHama("122543543");
PatienData.setHamd("2334255");
PatienData.setIsi("12324324");
patientTest.add(PatienData);

sleepDiarys = new ArrayList<SleepDiary>();
SleepDiary sleepDiary = new SleepDiary();
sleepDiary.setDay01("121422343");
sleepDiary.setDay02("1231421454");
sleepDiary.setDay03("1243243");
sleepDiary.setDay04("2435434521");
sleepDiary.setDay05("1243434");
sleepDiary.setDay06("12324343");
sleepDiary.setDay07("1243535");
sleepDiarys.add(sleepDiary);

}
//	//绑定监听器
private void setListener() {
button2.setOnClickListener(this);
button4.setOnClickListener(this);
}
//把一个集合转换成json格式的字符串
private void changeArrayDateToJson() {
jsonArrayPatientInfo = null;
object = null;
jsonArrayPatientInfo = new JSONArray();
jsonArrayTestData = new JSONArray();
jsonArraySleepDiary = new JSONArray();
object = new JSONObject();
//遍历上面初始化的集合数据，把数据加入JSONObject里面
for (int i = 0; i < patientInfos.size(); i++) {
//一个user对象，使用一个JSONObject对象来装
objPatientInfo = new JSONObject();
try {
//从集合取出数据，放入JSONObject里面 JSONObject对象和map差不多用法,以键和值形式存储数据
objPatientInfo.put("patient_name", patientInfos.get(i).getPatient_name());
objPatientInfo.put("patient_gender", patientInfos.get(i).getPatient_gender());
objPatientInfo.put("patient_age", patientInfos.get(i).getPatient_age());
objPatientInfo.put("patient_postion", patientInfos.get(i).getPatient_postion());
objPatientInfo.put("patient_scde", patientInfos.get(i).getPatient_scde());
objPatientInfo.put("patient_insomnia", patientInfos.get(i).getPatient_insomnia());
objPatientInfo.put("patient_mhistory", patientInfos.get(i).getPatient_mhistory());
objPatientInfo.put("patient_phone", patientInfos.get(i).getPatient_phone());
objPatientInfo.put("current_date", patientInfos.get(i).getCurrentdate());

//把JSONObject对象装入jsonArray数组里面
jsonArrayPatientInfo.put(objPatientInfo);
} catch (JSONException e) {
e.printStackTrace();
}
}
for(int i = 0 ; i < patientTest.size(); i++){
//测试对象，使用JSONObject
objTestData = new JSONObject();

try {
objTestData.put("pqsi", patientTest.get(i).getPqsi());
objTestData.put("sleepness", patientTest.get(i).getSleepness());
objTestData.put("hama", patientTest.get(i).getHama());
objTestData.put("hamd", patientTest.get(i).getHamd());
objTestData.put("isi", patientTest.get(i).getIsi());
//把JSONObject对象装入jsonArray数组里面
jsonArrayTestData.put(objTestData);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
for(int i = 0 ; i < sleepDiarys.size(); i++){
//测试对象，使用JSONObject
objSleepDiary = new JSONObject();

try {
objSleepDiary.put("day01", sleepDiarys.get(i).getDay01());
objSleepDiary.put("day02", sleepDiarys.get(i).getDay02());
objSleepDiary.put("day03", sleepDiarys.get(i).getDay03());
objSleepDiary.put("day04", sleepDiarys.get(i).getDay04());
objSleepDiary.put("day05", sleepDiarys.get(i).getDay05());
objSleepDiary.put("day06", sleepDiarys.get(i).getDay06());
objSleepDiary.put("day07", sleepDiarys.get(i).getDay07());
//把JSONObject对象装入jsonArray数组里面
jsonArraySleepDiary.put(objSleepDiary);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

try {
//再把JSONArray数据加入JSONObject对象里面(数组也是对象)
object.put("PatitentData", jsonArrayPatientInfo);
object.put("testData", jsonArrayTestData);
object.put("sleepDiary", jsonArraySleepDiary);
//object.put("time", "2013-11-14"); //这里还可以加入数据，这样json型字符串，就既有集合，又有普通数据
} catch (JSONException e) {
e.printStackTrace();
}
jsonString = null;
//把JSONObject转换成json格式的字符串
jsonString  = object.toString();
textView.setText(jsonString);
Log.i("输出json字符串", "转换成json字符串: " + jsonString);

}
@Override
public void onClick(View v) {
switch (v.getId()) {

case R.id.bt2:
changeArrayDateToJson(); //点击第2个按钮，把普通数据换成json数据格式的string
break;
case R.id.bt4://解析带集合的json字符串
if (jsonString==null || "".equals(jsonString)) {
Toast.makeText(MainActivity.this, "请先点击第2按钮把数据换成json字符串", Toast.LENGTH_LONG).show();
return;
}
changeJsonToData1();
break;
default:
break;
}

}
//解析带集合的json字符串
private void changeJsonToData1()
{
//用来保存解析出来的数据，显示在textview
StringBuilder stringBuilder = new StringBuilder();
StringBuilder stringBuilder2 = new StringBuilder();
StringBuilder stringBuilder3 = new StringBuilder();
PatientInformation patient;
PatientTest patientTest;
SleepDiary sleepDiary;
List<PatientInformation> pInfoList=new ArrayList<PatientInformation>();
List<PatientTest> pTestList = new ArrayList<PatientTest>();
List<SleepDiary> sleepList = new ArrayList<SleepDiary>();
try {

object = new JSONObject(jsonString);
jsonArrayPatientInfo = object.getJSONArray("PatitentData");  //通过key，获取JSONObject里面的一个JSONArray数组
jsonArrayTestData = object.getJSONArray("testData");
jsonArraySleepDiary = object.getJSONArray("sleepDiary");
for (int i = 0; i < jsonArrayPatientInfo.length(); i++) {  //遍历数据
object = jsonArrayPatientInfo.getJSONObject(i); //从JSONArray里面获取一个JSONObject对象
patient = new PatientInformation();
patient.setPatient_name(object.getString("patient_name"));
patient.setPatient_gender(object.getString("patient_gender"));
patient.setPatient_age(object.getString("patient_age"));
patient.setPatient_postion(object.getString("patient_postion"));
patient.setPatient_scde(object.getString("patient_scde"));
patient.setPatient_insomnia(object.getString("patient_insomnia"));
patient.setPatient_mhistory(object.getString("patient_mhistory"));
patient.setPatient_phone(object.getString("patient_phone"));
patient.setCurrentdate(object.getString("current_date"));
pInfoList.add(patient);
}
} catch (JSONException e) {
e.printStackTrace();
}
for (int i = 0; i < pInfoList.size(); i++) {
stringBuilder.append("患者姓名:"+pInfoList.get(i).getPatient_name()).append("   ").append("患者年龄:" + pInfoList.get(i).getPatient_age()).append("   ").append("性别：" +
pInfoList.get(i).getPatient_gender()).append("    ").append("职业：" + pInfoList.get(i).getPatient_postion()).append("   ").append("学历：" + pInfoList.get(i).getPatient_scde()).append("  ")
.append("失眠时间：" + pInfoList.get(i).getPatient_insomnia()).append("   ").append("既往病史： " + pInfoList.get(i).getPatient_mhistory()).append("   ").append("联系方式：" +
pInfoList.get(i).getPatient_phone()).append("   ").append("测试时间 ：" + pInfoList.get(i).getCurrentdate());
}
for(int i = 0;i < jsonArrayTestData.length();i++){
try {
object = jsonArrayTestData.getJSONObject(i);
patientTest = new PatientTest();
patientTest.setPqsi(object.getString("pqsi"));
patientTest.setSleepness(object.getString("sleepness"));
patientTest.setHama(object.getString("hama"));
patientTest.setHamd(object.getString("hamd"));
patientTest.setIsi(object.getString("isi"));
pTestList.add(patientTest);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
for (int i = 0; i < pTestList.size(); i++) {
stringBuilder2.append("pqsi:"+pTestList.get(i).getPqsi()).append("   ").append("sleepness:" + pTestList.get(i).getSleepness()).append("   ").append("hama" +
pTestList.get(i).getHama()).append("    ").append("hamd：" + pTestList.get(i).getHamd()).append("   ").append("isi：" + pTestList.get(i).getIsi());
}
System.out.println("111111111111111111111111111");
for(int i = 0;i < jsonArraySleepDiary.length();i++){
try {
object = jsonArraySleepDiary.getJSONObject(i);
System.out.println("22222222" + object);
sleepDiary = new SleepDiary();
sleepDiary.setDay01(object.getString("day01"));
sleepDiary.setDay02(object.getString("day02"));
sleepDiary.setDay03(object.getString("day03"));
sleepDiary.setDay04(object.getString("day04"));
sleepDiary.setDay05(object.getString("day05"));
sleepDiary.setDay06(object.getString("day06"));
sleepDiary.setDay07(object.getString("day07"));
sleepList.add(sleepDiary);
System.out.println("2222222222222222222222222");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
for (int i = 0; i < sleepList.size(); i++) {
stringBuilder3.append("day01:"+sleepList.get(i).getDay01()).append("   ").append("day02:" + sleepList.get(i).getDay02()).append("   ").append("day03" +
sleepList.get(i).getDay03()).append("    ").append("day04：" + sleepList.get(i).getDay04()).append("   ").append("day05：" + sleepList.get(i).getDay05())
.append("   ").append("day06：" + sleepList.get(i).getDay06()).append("   ").append("day07：" + sleepList.get(i).getDay07());
}

textView.setText(stringBuilder.toString() + "\n" + stringBuilder2.toString() + "\n" + stringBuilder3);
}
}

程序中先通过initDate()方法设置数据，再通过changeArrayDateToJson()函数将数据转换成json数据格式，转换后再通过changeJsonToData1()方法吧json数据转换成普通的数据，然后在进行下一步的操作。