StringBuffer batchReplaceStr = new StringBuffer;batchReplaceStr 转换为String 并以逗号隔开

To convert the batchReplaceStr StringBuffer to a String and separate the values with commas, you can use the toString() method of the StringBuffer class along with the replaceAll() method to replace the spaces with commas. Here's an example of how you can do it:

String batchReplaceStrString = batchReplaceStr.toString().replaceAll(" ", ",");

The toString() method converts the StringBuffer object to a String, and the replaceAll() method replaces all occurrences of spaces with commas in the resulting String. The modified String is then stored in the batchReplaceStrString variable.