turn urn 條件 ash 字符處理 ble nbsp sdn contain

如查詢的條件為:params.add("fq", "jiucaiyun_brand:Double A" ),這樣是查不出帶有空格的條件，需要把空格轉義

if(brand2.contains(" ")) {
brand2=brand2.replace(" " , "\\ ");
}
params.add("fq", "jiucaiyun_brand:" + brand2);這樣就可以查出匹配的結果。

其他字符處理：+ – && || ! ( ) { } [ ] ^ ” ~ * ? : \和空格

public static String transformSolrMetacharactor(String input){

StringBuffer sb = new StringBuffer();
String regex = "[+\\-&|!(){}\\[\\]^\"~*?:(\\)\\s]";
Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(input);
while(matcher.find()){
matcher.appendReplacement(sb, "\\\\"+matcher.group());
}
matcher.appendTail(sb);
return sb.toString();
}
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作者：ldh_lyf
來源：CSDN
原文：https://blog.csdn.net/lyf_ldh/article/details/82775887
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solr中特殊字符的處理