空指針異常在當使用elasticsearch XContentBuilder用法

Question

我們正在使用XContentBuilder如下它被投擲的NullPointerException

private int count=0; 
public void outerCall(){ 
     XContentBuilder contentBuilder = jsonBuilder(); 
     contentBuilder.startObject(); 
     contentBuilder.field("key1", "value1"); 
     contentBuilder.field("key2", "value2"); 
     innerCall(contentBuilder, 0); 
     contentBuilder.field("key3", "value3"); 
     contentBuilder.close(); 
     log.info("OUTER "+contentBuilder.string()); 

} 


private XContentBuilder innerCall(XContentBuilder contentBuilder, int count2) throws Exception{ 

    //XContentBuilder contentBuilder = jsonBuilder().startObject(); 

    contentBuilder.startArray("specifications"); 
    contentBuilder.startObject(); 
    contentBuilder.field("key", "value"); 

    if(count<2){ 
     innerCall(contentBuilder, count++); 
    } 
    else{ 
     contentBuilder.endObject().endArray().endObject(); 
     return contentBuilder;   
    } 
    log.info(contentBuilder.string()); 
    return contentBuilder; 
} 

這是示例代碼和歌廳NPE在 contentBuilder.field（「KEY3」，「值3」 ）; （「key」，「value」）;

如果嘗試調試代碼獲取NPE contentBuilder.field（「key」，「value」）;

幫我解決這個問題..

Answer 1

更改方法代碼：

private XContentBuilder innerCall(XContentBuilder contentBuilder, int count2) throws Exception{ 

    //XContentBuilder contentBuilder = jsonBuilder().startObject(); 

    contentBuilder.startArray("specifications"); 
    contentBuilder.startObject(); 
    contentBuilder.field("key", "value"); 

    if(count<2){ 
     innerCall(contentBuilder, count++); 
    } else { 
     log.info(contentBuilder.string()); 
    } 
    contentBuilder.endObject().endArray().endObject(); 
    return contentBuilder; 
}