用java实现mongodb正则查询小技巧
//模糊查询private BasicDBObject getLikeStr(String findStr) {
Pattern pattern = Pattern.compile("^.*" + findStr + ".*$", Pattern.MULTILINE);
return new BasicDBObject("$regex", pattern);
}
DBObject query = new BasicDBObject();
query.put("real_name", getLikeStr(userName));
//endWith文件扩展名
private BasicDBObject endWithStr(String findStr) {
Pattern pattern = Pattern.compile(findStr + "$", Pattern.MULTILINE);
return new BasicDBObject("$regex", pattern);
}
DBObject query = new BasicDBObject();
query.put("filename", endWithStr(“.pdf”));
//startWith文件扩展名
protected static BasicDBObject startWithStr(String findStr) {
Pattern pattern = Pattern.compile("^" + findStr, Pattern.MULTILINE);
return new BasicDBObject("$regex", pattern);
}
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