Android解析JSON数据的方法分析

findViewById(R.id.parseBtn).setOnClickListener(new OnClickListener(){  @Override  public void onClick(View v) {    jsonData = "[{/"name/":/"Michael/",/"age/":20},{/"name/":/"Mike/",/"age/":21}]";    MainActivity.parseJson(jsonData);  }});public static void parseJson(String jsonStr){  //如果要解析JSON数据，首先要有一个JsonReader对象  JsonReader jsonReader = new JsonReader(new StringReader(jsonStr));  try {  //开始遍历数组（多个JSON对象）    jsonReader.beginArray();    while(jsonReader.hasNext()){    //开始遍历JSON对象(含有多个属性)      jsonReader.beginObject();      while(jsonReader.hasNext()){        String tagName = jsonReader.nextName();        if(tagName.equals("name")){          System.out.println("name --> " + jsonReader.nextString());        }else if(tagName.equals("age")){          System.out.println("age --> " + jsonReader.nextString());        }      }    //遍历JSON对象结束      jsonReader.endObject();    }    //遍历数组结束    jsonReader.endArray();  } catch (IOException e) {    e.printStackTrace();  }}

//先定义一个类public class User {  public String getName() {    return name;  }  public void setName(String name) {    this.name = name;  }  public int getAge() {    return age;  }  public void setAge(int age) {    this.age = age;  }}//只将一组数据转换的方法findViewById(R.id.parseObj).setOnClickListener(new OnClickListener(){  @Override  public void onClick(View v) {    String jsonData = "{/"name/":/"Michael/",/"age/":20}";    Gson gson = new Gson();    User user = gson.fromJson(jsonData, User.class);    System.out.println("name--->" + user.getName());    System.out.println("age---->" + user.getAge());  }});//将多组数据转换的方法findViewById(R.id.parseObjs).setOnClickListener(new OnClickListener(){  @Override  public void onClick(View v) {    String jsonData = "[{/"name/":/"Michael/",/"age/":20},{/"name/":/"Mike/",/"age/":21}]";    Type listType = new TypeToken<LinkedList<User>>(){}.getType();    Gson gson = new Gson();    LinkedList<User> users = gson.fromJson(jsonData, listType);    for (Iterator iterator = users.iterator(); iterator.hasNext();) {      User user = (User) iterator.next();      System.out.println("name--->" + user.getName());      System.out.println("age---->" + user.getAge());    }  }});