融云教程

1. https://www.rongcloud.cn/downloads (下载地址)

2. https://www.rongcloud.cn/docs/quick_start.html#faq (需要自己写的功能)
   

3. https://www.rongcloud.cn/docs/server.html (Server 开发指南, java的server从这里下载)

4. https://developer.rongcloud.cn/app/appService/Kh/ATgVeAzRYx6RpgHw= (融云控制台)

5. https://github.com/rongcloud/server-sdk-java/blob/master/README.md (后台代码举例)

6. (没用) https://www.cnblogs.com/zhangwj/p/7717266.html (获取汉字首字母)

7. (部分字不正确) https://www.jianshu.com/p/1cb4ee64af32 (获取汉字首字母)

8. `public class PinyinUtil {
   /**

   • 得到 全拼
   • @param src
   • @return
     */
     public static String getPingYin(String src) {
     char[] t1 = null;
     t1 = src.toCharArray();
     String[] t2 = new String[t1.length];
     HanyuPinyinOutputFormat t3 = new HanyuPinyinOutputFormat();
     t3.setCaseType(HanyuPinyinCaseType.LOWERCASE);
     t3.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
     t3.setVCharType(HanyuPinyinVCharType.WITH_V);
     String t4 = “”;
     int t0 = t1.length;
     try {
     for (int i = 0; i < t0; i++) {
     // 判断是否为汉字字符
     if (java.lang.Character.toString(t1[i]).matches("[\u4E00-\u9FA5]+")) {
     t2 = PinyinHelper.toHanyuPinyinStringArray(t1[i], t3);
     t4 += t2[0];
     } else {
     t4 += java.lang.Character.toString(t1[i]);
     }
     }
     return t4;
     } catch (BadHanyuPinyinOutputFormatCombination e1) {
     e1.printStackTrace();
     }
     return t4;
     }

   /**

   • 得到中文首字母

   • @param str

   • @return
     */
     public static String getPinYinHeadChar(String str) {

     String convert = “”;
     for (int j = 0; j < str.length(); j++) {
     char word = str.charAt(j);
     String[] pinyinArray = PinyinHelper.toHanyuPinyinStringArray(word);
     if (pinyinArray != null) {
     convert += pinyinArray[0].charAt(0);
     } else {
     // 判断是否为英文字母
     if(String.valueOf(word).matches("[a-zA-Z]+")){ // 如果是英文字母
     // 添加英文字母
     convert += word;
     }else{ // 如果不是英文字母
     // 添加#
     convert += “#”;
     }
     }
     }
     return convert;
     }

   /**

   • 将字符串转移为ASCII码
   • @param cnStr
   • @return
     */
     public static String getCnASCII(String cnStr) {
     StringBuffer strBuf = new StringBuffer();
     byte[] bGBK = cnStr.getBytes();
     for (int i = 0; i < bGBK.length; i++) {
     // System.out.println(Integer.toHexString(bGBK[i]&0xff));
     strBuf.append(Integer.toHexString(bGBK[i] & 0xff));
     }
     return strBuf.toString();
     }

   /**

   • @Author dongpeili
   • @Description 中文转拼音, 获取第一个字母
   • @Date 13:34 2019/6/27
   • @Param [cnStr]
   • @Return java.lang.String
     **/
     public static String getFirstChar(String cnStr){
     String headStr = getPinYinHeadChar(cnStr);
     return headStr.substring(0, 1);
     }

   public static void main(String[] args) {

   String cnStr = "凌";
   System.out.println(getPingYin(cnStr));
   System.out.println(getFirstChar(cnStr));
   System.out.println(getFirstChar("渣瓦"));
   System.out.println(getFirstChar("嘟嘟噜"));
   System.out.println(getFirstChar("哎呀"));
   System.out.println(getFirstChar("报错"));
   System.out.println(getFirstChar("asd"));
   System.out.println(getFirstChar("kjj"));
   System.out.println(getFirstChar("-="));
   

   }
   }`
   能用的

9. https://www.rongcloud.cn/docs/server_sdk_api/group/group.html#join (官网接口文档)