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我有多個控制檯日誌。 ArrayBuilder本身的「AB」日誌給了我下面的輸出是正確的輸出。但是,ArrayBuilder輸入的日誌給了我一個空白的[]。 爲什麼JsonArrayBuilder沒有返回正確的輸出?JsonArrayBuilder給出空白輸出
"AB[{"ingredientnaam":"Banaan","calorieen":89,"vet":0.9,"verzadigd_vet":0.3,"eiwit":1.2,"koolhydraten":20.4,"vezels":1.9,"zout":0.0}]"
爲ArrayBuilder
JsonArray ingredientArray = buildJsonIngredientArray(service.getToday(gebruikersnaam, datum));
System.out.println(ingredientArray.toString());
return ingredientArray.toString();
我JsonArrayBuilder
private JsonArray buildJsonIngredientArray(List<Dagboek> list) {
JsonArrayBuilder jsonArrayBuilder = Json.createArrayBuilder();
for (Dagboek d : list) {
Ingredient c = d.getIngredient();
JsonObjectBuilder job = Json.createObjectBuilder();
job.add("ingredientnaam", c.getIngredientnaam());
job.add("calorieen", c.getCalorieen());
job.add("vet", c.getVet());
job.add("verzadigd_vet", c.getVerzadigd_vet());
job.add("eiwit", c.getEiwit());
job.add("koolhydraten", c.getKoolhydraten());
job.add("vezels", c.getVezels());
job.add("zout", c.getZout());
jsonArrayBuilder.add(job);
}
System.out.println("AB" + jsonArrayBuilder.build());
return jsonArrayBuilder.build();
}
這似乎不太可能,但可能會在調用'build'後清除內部數組。嘗試存儲這裏使用的構建的返回值:'System.out.println(「AB」+ jsonArrayBuilder.build());'並返回它。 (全面披露,不知道這是否會奏效) –
@NeilLocketz到底什麼,我不明白爲什麼,但它修復了哈哈。謝謝一堆! –
沒問題,我也會回答這個問題。 –