Problem description:
This situation often occurs in TOMCAT: the string we input is Chinese characters (the default encoding is GBK), but the default encoding of TOMCAT is ISO8859-1 encoding, so there are errors, resulting in garbled characters.
Solution:
Use ISO8859-1 to convert the string obtained from Tomcat into a byte array again, and then use GBK to encode it.
package cn.com;
public class Test7 {
public static void main(String[] args) throws Exception {
System.out.println("我们输入的汉字,默认编码是gbk");
String str1="大家好";
System.out.println("str1="+str1);
byte [] GBKArr=str1.getBytes("gbk"); //等同于 byte [] b1=s1.getBytes();因为它默认的就是gbk编码
System.out.println("Tomcat,默认编码是ISO8859-1编码");
String str2=new String(GBKArr, "iso8859-1");
System.out.println("str2="+str2);//导致乱码
System.out.println("把从Tomcat得到的字符串再次利用ISO8859-1将其变为字节数组，然后利用GBK进行编码");
byte [] ISOArr =str2.getBytes("iso8859-1");
String result=new String(ISOArr,"gbk");//等同于new String(ISOArr);因为默认的就是gbk编码
System.out.println("result="+result);
}
}Recommended tutorial: java quick start
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