jesson字符串和Object之间的转换 的工具类

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

public class GsonUtils {
private static Gson gson = null;

static{
gson = new Gson();
}

private GsonUtils(){
throw new UnsupportedOperationException("cannot install this class");
}

/**
* Object -> JsonString
* @param t
* @return
*/
public static <T> String toJson(T t) {
return gson.toJson(t);
}

/**
*JsonString -> 指定类型的object
* @param jsonString
* @param clazz
* @return
*/
public static <T> T fromJson(String jsonString, Class<T> clazz) {
return gson.fromJson(jsonString, clazz);
}

/**
* jsonString -> 指定类型的object
* @param jsonString
* @param typeToken
* @return
*/
public static <T> T fromJson(String jsonString,TypeToken<T> typeToken) {
return gson.fromJson(jsonString, typeToken.getType());
}

}