限制中文
String checkStr = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
String str = request.getParameter("str");
for (int i = 0; i < str.length(); i++) {
if (checkStr.indexOf(str.substring(i, i + 1)) == -1) {
System.out.println("str :" + str.substring(i, i + 1));
System.out.println("i :" + i);
System.out.println("no eng");
break;
}
}
String checkStr = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
String str = request.getParameter("str");
for (int i = 0; i < str.length(); i++) {
if (checkStr.indexOf(str.substring(i, i + 1)) == -1) {
System.out.println("str :" + str.substring(i, i + 1));
System.out.println("i :" + i);
System.out.println("no eng");
break;
}
}
String str = "test中文test";
byte[] c = str.getBytes();
System.out.println("str length :" +c.length);
String checkStr = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
String str = "test中文test";
for (int i = 0; i < str.length(); i++) {
if (checkStr.indexOf(str.substring(i, i + 1)) == -1) {
System.out.println("no eng at "+str.substring(i,i+1));
break;
}
}