字符串比较长了之后,数据就发不过去了,经检查JDK的源代码,原来有长度限制。
为了保险起见,我们还是不要超过65535/3 我看取20000好了。
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为了保险起见,我们还是不要超过65535/3 我看取20000好了。
- public final void writeUTF(String str) throws IOException {
- writeUTF(str, this);
- }
- static int writeUTF(String str, DataOutput out) throws IOException {
- int strlen = str.length();
- int utflen = 0;
- int c, count = 0;
- /* use charAt instead of copying String to char array */
- for (int i = 0; i < strlen; i++) {
- c = str.charAt(i);
- if ((c >= 0x0001) && (c <= 0x007F)) {
- utflen++;
- } else if (c > 0x07FF) {
- utflen += 3;
- } else {
- utflen += 2;
- }
- }
- if (utflen > 65535)
- throw new UTFDataFormatException("encoded string too long: " + utflen + " bytes");
- // 其他的语句
- }
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