反序列化的異常而POST操作嵌套JSON春控制器

我使用Spring，以下是我的控制器代碼：反序列化的異常而POST操作嵌套JSON春控制器

@RequestMapping(value = "/campaigns/addTask", method = RequestMethod.POST) 
    public Campaign addTaskToCampaign(@RequestParam(value = "campaignName")String campaignName,@Valid @RequestBody Task task){ 
     Campaign campaign = campaignInterface.findByName(campaignName); 
     if (campaign!=null){ 
      List<String> task_ids; 
      if (campaign.getTask_ids()==null){ 
       task_ids = new ArrayList<>(); 
      }else{ 
       task_ids= campaign.getTask_ids(); 
      } 
      Task newTask = taskInterface.save(task); 
      task_ids.add(newTask.getId()); 
      campaign.setTask_ids(task_ids); 
      return campaignInterface.save(campaign); 
     } 
     return null; 
    }

在哪裏我的任務模式是：

@Document(collection = "tasks") 
public class Task { 

    @Id 
    private String id; 
    private String name; 

    private int points; 

    private List<Question>questions; 

    private List<String>answers; 
..... 
}

和嵌套問題模型：

public class Question { 

    private Boolean isText= false; 
    private String questionText; 
}

但是，相同的模型時，作爲嵌套json發佈引發HTTP 400異常說json不可讀異常，並且它試圖將String questionText字段解析爲一個布爾值。

這裏是什麼即時通訊發佈：

{ 
"name" : "Test Task 3", 
"questions": [{ "questionText":"What is the name you college festival?","isText":true}] 
}

和隨之而來的例外情況是這樣的：

{ 
    "timestamp": 1497508476467, 
    "status": 400, 
    "error": "Bad Request", 
    "exception": "org.springframework.http.converter.HttpMessageNotReadableException", 
    "message": "JSON parse error: Can not deserialize value of type boolean from String \"What is the name you college festival?\": only \"true\" or \"false\" recognized; nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not deserialize value of type boolean from String \"What is the name you college festival?\": only \"true\" or \"false\" recognized\n at [Source: [email protected]; line: 3, column: 32] (through reference chain: com.frapp.CBM.prod.model.Task[\"questions\"]->java.util.ArrayList[0]->com.frapp.CBM.prod.model.Question[\"questionText\"])", 
    "path": "/campaigns/addTask" 
}

任何幫助表示讚賞。我一直在嘗試幾個小時。先謝謝你。

來源

2017-06-15 MadScientist

你試試重建嗎？ – Jerry06

是的。我從生成菜單重建。我也做了兩次運行。 – MadScientist

從解析錯誤，它似乎期待questionText的布爾值。請在服務器代碼中檢查questionText的數據類型。 – Sumit

@RequestMapping(value = "/campaigns/addTask", method = RequestMethod.POST) 
    public Campaign addTaskToCampaign(@RequestParam Map<String,Object> campaignName,@Valid @RequestBody Task task){ 

    /* 
     if there is exception then just remove Task put it into json to catch into map.   
     access just as map by campaignName.get("key_name"); 
    */ 

     Campaign campaign = campaignInterface.findByName(campaignName); 
     if (campaign!=null){ 
      List<String> task_ids; 
      if (campaign.getTask_ids()==null){ 
       task_ids = new ArrayList<>(); 
      }else{ 
       task_ids= campaign.getTask_ids(); 
      } 
      Task newTask = taskInterface.save(task); 
      task_ids.add(newTask.getId()); 
      campaign.setTask_ids(task_ids); 
      return campaignInterface.save(campaign); 
     } 
     return null; 
    }

來源

2017-06-15 10:09:15 Zigri2612

我會對我的任何開發人員做出的第一個評論是：請你可以重命名你的boolean。這是因爲吸氣劑看起來像：isIsText()。

作爲一般規則，最好避免用「get」，「set」或「is」開始字段名稱。

這是因爲這些是java-beans屬性的前綴。

來源

2017-06-15 10:52:33 MartinByers

反序列化的異常而POST操作嵌套JSON春控制器

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