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public static Map<String, String> maptoMapString(Map<String, ?> map) {      return map.entrySet().stream().collect(Collectors.toMap(             (entry) -> {                 return entry.getKey();             },             (entry) -> {                 if(entry.getValue().getClass().isArray()) {                     StringBuilder sb = new StringBuilder();                     for(int i=0; i<Array.getLength(entry.getValue()); ++i) {                         Object obj = Array.get(entry.getValue(), i);                         sb.append(obj.toString()).append(",");                     }                     if (sb.length() > 0) {                         sb.deleteCharAt(sb.length() - 1);                     }                       return sb.toString();                 } else {                     return entry.getValue().toString();                 }             }     )); }

本文转自 小眼儿 博客园博客，原文链接：http://www.cnblogs.com/hujunzheng/p/7215373.html，如需转载请自行联系原作者