我以驯服文本书为例,在 solr 中添加自定义QueryResponseWriter
。但它在 wt
中没有显示为 tah
当我点击以下查询时,显示空响应
http://localhost:8983/solr/collectiona/type-ahead?q=fayes&wt=tah
在我的 solr 配置中,我放置了以下库的目录路径
<lib dir="${solr.install.dir:../../../..}/contrib/customresponsewriter" regex=".*\.jar" />
我已经按照书中提到的为此创建了一个 jar 文件。这是我的 java 类
public class TypeAheadResponseWriter implements QueryResponseWriter {
private Set<String> fields;
public void write(Writer writer, SolrQueryRequest solrQueryRequest, SolrQueryResponse solrQueryResponse) throws IOException {
SolrIndexSearcher searcher = solrQueryRequest.getSearcher();
NamedList namedList = solrQueryResponse.getValues();
int size = namedList.size();
for (int i = 0; i < size; i++) {
Object val = namedList.getVal(i);
if (val instanceof DocList) {
DocList docList = (DocList) val;
DocIterator docIterator = docList.iterator();
writer.append("<ul>\n");
while (docIterator.hasNext()) {
int id = docIterator.nextDoc();
Document doc = searcher.doc(id, fields);
String name = doc.get("title");
writer.append("<li>" + name + "</li>");
}
writer.append("</ul>\n");
}
}
}
public String getContentType(SolrQueryRequest solrQueryRequest, SolrQueryResponse solrQueryResponse) {
return "text/html;charset=UTF-8";
}
public void init(NamedList namedList) {
fields = new HashSet<String>();
fields.add("title");
}
}
这是我的 queryResponsewriter 的 solr 配置
<queryResponseWriter name="tah" class="cqw.TypeAheadResponseWriter"/>
<requestHandler name="/type-ahead" class="solr.SearchHandler">
<lst name="defaults">
<str name="wt">tah</str>
<str name="defType">dismax</str>
<str name="qf">title_prefix_typeahead^1.0</str>
</lst>
</requestHandler>
自定义库在 solr 启动期间加载,这是我的 Solr 日志
Added 63 libs to classloader, from paths: [/home/bibek/software/java/solr-7.3.0/contrib/clustering/lib, /home/bibek/software/java/solr-7.3.0/contrib/customresponsewriter, /home/bibek/software/java/solr-7.3.0/contrib/extraction/lib, /home/bibek/software/java/solr-7.3.0/contrib/langid/lib, /home/bibek/software/java/solr-7.3.0/contrib/velocity/lib, /home/bibek/software/java/solr-7.3.0/dist]
最佳答案
在 solr-core 7.3 NameList::getVal(index)
中,将返回 BasicResultContext
,其中包含 DocList
实例。下面是我更改的代码以供将来引用
public void write(Writer writer, SolrQueryRequest solrQueryRequest, SolrQueryResponse solrQueryResponse) throws IOException {
LOGGER.info("Here we are....");
SolrIndexSearcher searcher = solrQueryRequest.getSearcher();
NamedList namedList = solrQueryResponse.getValues();
LOGGER.info("Named List " + namedList.size());
int size = namedList.size();
for (int i = 0; i < size; i++) {
Object val = namedList.getVal(i);
LOGGER.info(val.toString());
if (val instanceof BasicResultContext) {
BasicResultContext basicResultContext = (BasicResultContext) val;
DocList docList = basicResultContext.getDocList();
LOGGER.info("docList List " + docList.size());
DocIterator docIterator = docList.iterator();
writer.append("<ul>\n");
while (docIterator.hasNext()) {
int id = docIterator.nextDoc();
LOGGER.info("id id " + id);
Document doc = searcher.doc(id, fields);
for (String field : fields) {
String value = doc.get(field);
LOGGER.info(value);
if (!StringUtils.isEmpty(value)) {
writer.append("<li>" + value + "</li>");
}
}
}
writer.append("</ul>\n");
}
}
}
关于java - 自定义 QueryResponseWriter 在 solr 7.3.0 中不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/50312621/