code: public static String canonicalNameToJvmName(String canonicalName) {
          boolean isArray = canonicalName.endsWith("[]");
          if (isArray) {
              String t = ""; // 计数，看上几维数组
              while (isArray) {
                  canonicalName = canonicalName.substring(0, canonicalName.length() - 2);
                  t += "[";
                  isArray = canonicalName.endsWith("[]");
              }
              if ("boolean".equals(canonicalName)) {
                  canonicalName = t + "Z";
              } else if ("byte".equals(canonicalName)) {
                  canonicalName = t + "B";
              } else if ("char".equals(canonicalName)) {
                  canonicalName = t + "C";
              } else if ("double".equals(canonicalName)) {
                  canonicalName = t + "D";
              } else if ("float".equals(canonicalName)) {
                  canonicalName = t + "F";
              } else if ("int".equals(canonicalName)) {
                  canonicalName = t + "I";
              } else if ("long".equals(canonicalName)) {
                  canonicalName = t + "J";
              } else if ("short".equals(canonicalName)) {
                  canonicalName = t + "S";
              } else {
                  canonicalName = t + "L" + canonicalName + ";";
              }
          }
          return canonicalName;
      }
docs: 通用描述转JVM描述
  
  @param canonicalName 例如 int[]
  @return JVM描述 例如 [I;