Json解析工具类JsonHelper，jsonjsonhelper,利用Gson快速解析js

Json解析工具类JsonHelper，jsonjsonhelper,利用Gson快速解析js

利用Gson快速解析json 需要导入Gson包，解析成一个对象或一个包含此对象的list JsonHelper代码如下： ```javaimport java.util.ArrayList;import java.util.List;import android.text.TextUtils;

import com.google.gson.Gson;import com.google.gson.JsonParseException;import com.google.gson.JsonParser;import com.google.gson.reflect.TypeToken;

public class JsonHelper { private static JsonHelper util;

public static JsonHelper getInstance() {    if (util == null) {        util = new JsonHelper();    }    return util;}private JsonHelper() {    super();}public String createJsonString(Object value) {    Gson gson = new Gson();    String str = gson.toJson(value);    return str;}public <T> T getObject(String jsonString, Class<T> cls) {    T t = null;    try {        if (isGoodJson(jsonString)) {            Gson gson = new Gson();            t = gson.fromJson(jsonString, cls);        }    } catch (Exception e) {        e.printStackTrace();    }    return t;}public <T> List<T> getList(String jsonString, TypeToken<T> tt) {    List<T> list = new ArrayList<T>();    try {        if (isGoodJson(jsonString)) {            Gson gson = new Gson();            list = gson.fromJson(jsonString, tt.getType());        }    } catch (Exception e) {    }    return list;}public boolean isBadJson(String json) {    return !isGoodJson(json);}public boolean isGoodJson(String json) {    if (TextUtils.isEmpty(json)) {        return false;    }    try {        new JsonParser().parse(json);    } catch (JsonParseException e) {        return false;    }    return true;}

}

 使用方法 ```javaBean bean = new Bean();        bean.age="30";        bean.name="name";        String result = JsonHelper.getInstance().createJsonString(bean);        System.out.println(result);        Bean bean2 = JsonHelper.getInstance().getObject(result, Bean.class);        System.out.println(bean2.toString());        ArrayList<Bean> list = new ArrayList<Bean>();        list.add(bean);        list.add(bean2);        result = JsonHelper.getInstance().createJsonString(list);        System.out.println(result);        List<ArrayList<Bean>> list2 = JsonHelper.getInstance().getList(result, new TypeToken<ArrayList<Bean>>(){});        System.out.println(list2.toString());

Bean.java

public class Bean {    String name="";    String age="";    @Override    public String toString() {        return "Bean [name=" + name + ", age=" + age + "]";    }}