Introduction to solving string garbled characters in Java

java string garbled solution: (Recommended: java video tutorial)

System.out.println(str);
            String str1 = new String(str.getBytes("ISO-8859-1"), "utf-8");
            System.out.println(str1);
            String str2 = new String(str.getBytes("gb2312"), "utf-8");
            System.out.println(str2);
            String str3 = new String(str.getBytes("gbk"), "utf-8");
            System.out.println(str3);

str.getBytes(charsetName);charsetName is the original character Encoding

"utf-8" is to convert str to utf-8 encoding.

new String(str.getBytes("gbk"),"iso8859-1")

Step one: byte[] bytes=str.getBytes("gbk")

Tell the java virtual machine to convert Chinese into a byte array in the "gbk" method. One Chinese character corresponds to two bytes.

The corresponding second step is:

When String s=new String(bytes, "iso8859-1"), each byte is assembled into a "?" . At this time, s is several "?". We can regard "?" as a special Chinese character, and the information it represents can be restored without loss.

java.lang.String.getBytes(String charsetName) method encodes this String into a byte sequence using the specified character set and stores the result into a new byte array.

Declaration

The following is the declaration of the java.lang.String.getBytes() method

public byte[] getBytes(String charsetName) throws UnsupportedEncodingException

Parameters: charset -- This is the name of a supported character set.

Return value: This method returns the resulting byte array.

new String(byte[],decode) method

Compared with getBytes, you can restore the "中" character through new String(byte[], decode),

This new String(byte[],decode) actually uses the specified encoding decode to parse byte[] into a string.

Exception: UnsupportedEncodingException -- If the specified character set is not supported.

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