HighlightBuilder highlightBuilder = new HighlightBuilder();
//自定义高亮标签
highlightBuilder.preTags("<span style=\"color:red\">");
highlightBuilder.postTags("</span>");
HighlightBuilder.Field highlightTitle = new HighlightBuilder.Field("messageText");
highlightTitle.highlighterType("unified");
highlightBuilder.field(highlightTitle);
//设置为0即可返回完整内容 而非片段
highlightBuilder.numOfFragments(0);