solr使用c ++通过curl索引

Question

我试过这个，但它不起作用让我知道下面的代码有什么问题：

static const char *postthis="[{\"id\":\"4000\", \"to\":\"Life is to.\", \"cc\":\"unknown cc\", \"subject\":\"Life is subject\"}]";
    static const char *postthis1= "http://192.168.0.164:8983/solr/collection1/update?wt=json&commit=true ";
    static const char *postthis2= "'Content-type: application/json'";
    struct curl_slist *list = NULL;
    curl = curl_easy_init();
    if(curl) {
        curl_easy_setopt(curl, CURLOPT_URL,postthis1 );
        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postthis);

        list = curl_slist_append(list, "-H");
        list = curl_slist_append(list, postthis2);
        list = curl_slist_append(list, "-d");
        /* if we don't provide POSTFIELDSIZE, libcurl will strlen() by
        itself */ 
        curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, (long)strlen(postthis));
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, list);
        /* Perform the request, res will get the return code */ 
        res = curl_easy_perform(curl);
        /* Check for errors */ 
        if(res != CURLE_OK){
            logger.LogError("curl_easy_perform() failed: %s\n",
                curl_easy_strerror(res));
        }
        /* always cleanup */ 
        curl_easy_cleanup(curl);
  }

使用上面的代码我在终端窗口得到响应：

   {"responseHeader":{"status":0,"QTime":9}}

这是上述请求的回应。

在solr log中我得到了以下内容：

INFO  - 2016-05-19 11:22:10.778; [   x:collection1] org.apache.solr.update.DirectUpdateHandler2; start commit{,optimize=false,openSearcher=true,waitSearcher=true,expungeDeletes=false,softCommit=false,prepareCommit=false}
INFO  - 2016-05-19 11:22:10.779; [   x:collection1] org.apache.solr.update.DirectUpdateHandler2; No uncommitted changes. Skipping IW.commit.
INFO  - 2016-05-19 11:22:10.781; [   x:collection1] org.apache.solr.core.SolrCore; SolrIndexSearcher has not changed - not re-opening: org.apache.solr.search.SolrIndexSearcher
INFO  - 2016-05-19 11:22:10.783; [   x:collection1] org.apache.solr.update.DirectUpdateHandler2; end_commit_flush
INFO  - 2016-05-19 11:22:10.784; [   x:collection1] org.apache.solr.update.processor.LogUpdateProcessor; [collection1] webapp=/solr path=/update params={commit=true&[{"id":"4001", "from":"Life is to", "to":"unknown cc", "subject":"Life is subject"}]=&wt=json} {commit=} 0 8

实际curl命令是：

 curl http://192.168.0.164:8983/solr/collection1/update?commit=true -H "Content-Type: application/json" -d '[{"id":"450", "to":"Life is .", "cc":"unknown", "subject":"Life"}]'

它可以正常编制索引。