如何通過JSON解析JSON數組與多個對象android

Question

如何解析多個對象JSON？請幫幫我。

我的JSON，

{ 
    "result": [ 
     [{ 
      "date": "21.12.2016", 
      "day": "\u0421\u0435\u0440\u0435\u0434\u0430", 
      "time": "08:00-09:20", 
      "subject": "\u0424\u0456\u0437\u0438\u0447\u043d\u0430 \u0440\u0435\u0430\u0431\u0456\u043b\u0456\u0442\u0430\u0446\u0456\u044f (\u041f\u0440\u0421)", 
      "room": "\u0430\u0443\u0434.309\/4 \u043a\u043e\u0440\u043f\u0443\u0441 \u0432\u0438\u043a\u043b\u0430\u0434\u0430\u0447 \u041a\u0430\u0440\u043f\u0435\u043d\u043a\u043e \u042e.\u041c." 
     }, { 
      "date": "21.12.2016", 
      "day": "\u0421\u0435\u0440\u0435\u0434\u0430", 
      "time": "09:30-10:50", 
      "subject": "\u041f\u043e\u043b\u0456\u0442\u043e\u043b\u043e\u0433\u0456\u044f (\u041f\u0440\u0421)", 
      "room": "\u0430\u0443\u0434.408\/4 \u043a\u043e\u0440\u043f\u0443\u0441 \u0434\u043e\u0446\u0435\u043d\u0442 \u0412\u0435\u0434\u043c\u0435\u0434\u0454\u0432 \u041c.\u041c." 
     }, { 
      "date": "21.12.2016", 
      "day": "\u0421\u0435\u0440\u0435\u0434\u0430", 
      "time": "11:00-12:20", 
      "subject": "(\u043f\u0456\u0434\u0433\u0440. 2) \u0413\u0456\u043c\u043d\u0430\u0441\u0442\u0438\u043a\u0430 \u0442\u0430 \u043c\u0435\u0442\u043e\u0434\u0438\u043a\u0430 \u0457\u0457 \u0432\u0438\u043a\u043b\u0430 (\u041f\u0440\u0421)", 
      "room": "\u0430\u0443\u0434.\u0413\u0456\u043c\u043d\u0430\u0442\u0438\u0447\u043d\u0438\u0439 \u0437\u0430\u043b\/\u0421\u043f\u043e\u0440\u0442\u043a\u043e\u043c\u043f\u043b\u0435\u043a\u0441 \u0441\u0442. \u0432\u0438\u043a\u043b\u0430\u0434\u0430\u0447 \u0411\u0430\u043b\u0430\u0448\u043e\u0432 \u0414.\u0406." 
     }] 
    ] 
} 

Answer 1

你應該用於映射做這樣

JsonObject obj = new JsonObject(responseString); 
JsonArray result = obj.getJsonArray("result"); 

    for(int i = 0 ; i < result.length() ; i++){ 

     JsonArray dataArray = result.getJsonArray(i); 
     for(int j = 0 ; j < dataArray.length() ; j++){ 

      String date = dataObj.optString("date"); 
      ... 

     } 

    } 

Answer 2

org.codehaus.jackson.map.ObjectMapper使用這個庫。並使用轉換您的POJO成爲理想的類此： http://www.jsonschema2pojo.org/ 詳情：http://wiki.fasterxml.com/JacksonInFiveMinutes

像：

package com.example; 

import java.util.HashMap; 
import java.util.List; 
import java.util.Map; 
import com.fasterxml.jackson.annotation.JsonAnyGetter; 
import com.fasterxml.jackson.annotation.JsonAnySetter; 
import com.fasterxml.jackson.annotation.JsonIgnore; 
import com.fasterxml.jackson.annotation.JsonInclude; 
import com.fasterxml.jackson.annotation.JsonProperty; 
import com.fasterxml.jackson.annotation.JsonPropertyOrder; 

@JsonInclude(JsonInclude.Include.NON_NULL) 
@JsonPropertyOrder({ 
    "result" 
}) 
public class Example { 

    @JsonProperty("result") 
    private List<List<Result>> result = null; 
    @JsonIgnore 
    private Map<String, Object> additionalProperties = new HashMap<String, Object>(); 

    @JsonProperty("result") 
    public List<List<Result>> getResult() { 
     return result; 
    } 

    @JsonProperty("result") 
    public void setResult(List<List<Result>> result) { 
     this.result = result; 
    } 

    @JsonAnyGetter 
    public Map<String, Object> getAdditionalProperties() { 
     return this.additionalProperties; 
    } 

    @JsonAnySetter 
    public void setAdditionalProperty(String name, Object value) { 
     this.additionalProperties.put(name, value); 
    } 

} 

然後另一個Java類將是

package com.example; 

import java.util.HashMap; 
import java.util.Map; 
import com.fasterxml.jackson.annotation.JsonAnyGetter; 
import com.fasterxml.jackson.annotation.JsonAnySetter; 
import com.fasterxml.jackson.annotation.JsonIgnore; 
import com.fasterxml.jackson.annotation.JsonInclude; 
import com.fasterxml.jackson.annotation.JsonProperty; 
import com.fasterxml.jackson.annotation.JsonPropertyOrder; 

@JsonInclude(JsonInclude.Include.NON_NULL) 
@JsonPropertyOrder({ 
    "date", 
    "day", 
    "time", 
    "subject", 
    "room" 
}) 
public class Result { 

    @JsonProperty("date") 
    private String date; 
    @JsonProperty("day") 
    private String day; 
    @JsonProperty("time") 
    private String time; 
    @JsonProperty("subject") 
    private String subject; 
    @JsonProperty("room") 
    private String room; 
    @JsonIgnore 
    private Map<String, Object> additionalProperties = new HashMap<String, Object>(); 

    @JsonProperty("date") 
    public String getDate() { 
     return date; 
    } 

    @JsonProperty("date") 
    public void setDate(String date) { 
     this.date = date; 
    } 

    @JsonProperty("day") 
    public String getDay() { 
     return day; 
    } 

    @JsonProperty("day") 
    public void setDay(String day) { 
     this.day = day; 
    } 

    @JsonProperty("time") 
    public String getTime() { 
     return time; 
    } 

    @JsonProperty("time") 
    public void setTime(String time) { 
     this.time = time; 
    } 

    @JsonProperty("subject") 
    public String getSubject() { 
     return subject; 
    } 

    @JsonProperty("subject") 
    public void setSubject(String subject) { 
     this.subject = subject; 
    } 

    @JsonProperty("room") 
    public String getRoom() { 
     return room; 
    } 

    @JsonProperty("room") 
    public void setRoom(String room) { 
     this.room = room; 
    } 

    @JsonAnyGetter 
    public Map<String, Object> getAdditionalProperties() { 
     return this.additionalProperties; 
    } 

    @JsonAnySetter 
    public void setAdditionalProperty(String name, Object value) { 
     this.additionalProperties.put(name, value); 
    } 

}