org.json.JSONObject的getString和optString使用注意事项
作者:互联网
结论:org.json.JSONObject的getString如果取不到对应的key会抛出异常,optString则不会
/** * Returns the value mapped by {@code name} if it exists, coercing it if * necessary, or throws if no such mapping exists. * * @throws JSONException if no such mapping exists. */ public String getString(String name) throws JSONException { Object object = get(name); String result = JSON.toString(object); if (result == null) { throw JSON.typeMismatch(name, object, "String"); } return result; } /** * Returns the value mapped by {@code name} if it exists, coercing it if * necessary, or the empty string if no such mapping exists. */ public String optString(String name) { return optString(name, ""); }
标签:String,exists,JSONObject,name,result,getString,optString 来源: https://www.cnblogs.com/tc310/p/10718993.html